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Table of contents IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-04-02
Presents the table of contents for this issue of the publication.
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IEEE Transactions on Microwave Theory and Techniques publication information IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-04-02
Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.
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An Optically Transparent Near-Field Focusing Metasurface IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-08 Long Li, Pei Zhang, Fangjie Cheng, Mingyang Chang, Tie Jun Cui
We propose a novel optically transparent reflection-type metasurface based on indium tin oxide (ITO) material for simultaneously achieving high transmission of visible light and near-field focusing (NNF) of microwave, demonstrating its potential for wireless power transfer (WPT) and harvesting applications. By achieving high impedance of the metasurface, this work overcomes the main challenge in designing
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Machine-Learning-Powered EM-Based Framework for Efficient and Reliable Design of Low Scattering Metasurfaces IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-08 Slawomir Koziel, Muhammad Abdullah
Popularity of metasurfaces has been continuously growing due to their attractive properties including the ability to effectively manipulate electromagnetic (EM) waves. Metasurfaces comprise optimized geometries of unit cells arranged as a periodic lattice to obtain a desired EM response. One of their emerging application areas is the stealth technology, in particular, realization of radar cross section
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A Wideband High-Voltage Longitudinal Output Structure for Ka-Band Sheet Beam Traveling-Wave Tubes IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-12 Xinjie Li, Jianxun Wang, Yixin Wan, Wei Jiang, Zewei Wu, Guo Liu, Yong Luo
This article proposes a longitudinal output structure in Ka-band sheet beam traveling-wave tube (SBTWT) with an ultrawideband transmission and high breakdown collector voltage. A novel electromagnetic bandgap (EBG) cutoff structure is designed to separate the slow-wave structure (SWS) and the depressed collector. The large stopband property of the EBG structure is applied to achieve not only the high
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Low-Profile Metasurface-Based Diaphragm for Compartment Shielding of Microwave Cavities IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-19 Da Yi, Ming-Chun Tang, Mei Li, Zhe-Hao Zhang, Xing-Chang Wei, Er-Ping Li
This article proposes several low-profile metasurface-based compartment shielding diaphragms for the high-speed and highly integrated circuits located in the space-limited cavities. It was demonstrated that the capacitive metasurface (CMS) and inductive metasurface (IMS) partially filled in the cross section of cavities can generate new transverse electric and magnetic resonance modes, which are orthogonal
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Surface-Wave Propagation on Non-Hermitian Metasurfaces With Extreme Anisotropy IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-02 Marino Coppolaro, Massimo Moccia, Giuseppe Castaldi, Andrea Alù, Vincenzo Galdi
Electromagnetic metasurfaces enable the advanced control of surface-wave propagation by spatially tailoring the local surface reactance. Interestingly, tailoring the surface resistance distribution in space provides new, largely unexplored degrees of freedom. In this article, we show that suitable spatial modulations of the surface resistance between positive (i.e., loss) and negative (i.e., gain)
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Group Velocity Estimation and Defect Localization in Magneto-Inductive Waveguides IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-24 Tanuj Trivedi, Ye Chen, Ian A. D. Williamson, Praveen Pasupathy, Dean P. Neikirk
We report on time–frequency analysis (TFA) of dispersion in a 1-D magneto-inductive waveguide (MIW). The short-time Fourier transform (STFT) and Wigner–Ville distribution (WVD) are used to localize the frequency content of the dispersed wave as a function of time and to estimate the group velocity in experiments using a 1-D MIW constructed with planar resonators. Time-domain reflectometry (TDR) measurements
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Second-Order Analytic Extension of Eigenvalues for Fast Frequency Sweep Analysis of RF Circuits IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-15 Hongliang Li, Jian-Ming Jin, Douglas R. Jachowski, Robert B. Hammond
A second-order analytic extension of eigenvalue (AEE) method is presented and investigated for efficiently computing the ${Z}$ - parameters of passive RF circuits over a wide frequency band with full-wave accuracy. The ${Z}$ - parameters of an RF circuit are first extracted based on a full-wave simulation on sampling frequencies and then decomposed into eigenmodes, whose eigenvalues are analytically
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Analytical and Experimental Study of Multilayer Dielectric Rod Waveguides IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-12 Denise C. Lugo, Jing Wang, Thomas M. Weller
This article presents a comprehensive study of the design and performance of a multilayer dielectric rod waveguide (MDRW) with a rectangular cross section. The design is comprised of a high permittivity core encased by a low permittivity cladding. A mathematical model is proposed to predict the fundamental mode cutoff frequency in terms of the core dimensions and the core and cladding permittivity
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Multiport PDN Optimization With the Newton–Hessian Minimization Method IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-19 Jun Wang, Zhifei Xu, Xiuqin Chu, Jianmin Lu, Blaise Ravelo, Jun Fan
This article proposes an optimization algorithm using the Hessian minimization method, based on the Newton iteration, to evaluate the effectiveness of the placement of multiple decoupling capacitors on a power/ground plane pair. The exact effective decoupling regions are obtained using the Newton iteration method for each decoupling capacitor. The impedance of the IC port is lower than the target impedance
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Uncertainty Quantification Using Parameter Space Partitioning IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-01 Ye Tao, Francesco Ferranti, Michel S. Nakhla
A new method is presented for high-dimensional variability analysis based on two main concepts, namely, node tearing for parameter partitioning and sparse grid interpolation. Node tearing is used to localize the parameters and, thus, reducing the number of stochastic parameters within the subcircuits and sparse grids reduce the required number of samples for a targeted accuracy. MC analysis of the
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Compact and Low-Loss Phase Shifters and Multibit Phase Shifters Based on Inverted-E Topology IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-08 Faisal Amin, Yun Liu, Yongjiu Zhao, Sanming Hu
This article proposes a novel inverted-E topology for the design of phase shifters and multibit phase shifters. The novel phase shifter consists of a $50~\Omega $ main transmission line (MTL) symmetrically loaded with equally spaced three open-/short-circuited stubs via P-I-N switching diodes. The stubs provide the needed susceptances to achieve a phase shift with large value range. Thanks to the design
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Miniaturized Ultrawideband Reconfigurable Power Divider Based on Slotline and Double-Sided Parallel-Strip Line IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-25 Kaijun Song, Xinjun Zou, Yedi Zhou, Yong Fan
A novel miniaturized ultrawideband reconfigurable power divider based on slotline and double-sided parallel-strip line (DSPSL) is presented in this article. The switch from the two-way out-of-phase power divider to the four-way in-phase power divider can be realized by using only two PIN diodes in the presented power divider, which will simplify greatly the circuit design and reduce the cost. Two working
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New Transistor Behavioral Model Formulation Suitable for Doherty PA Design IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-09 João Louro, Catarina Belchior, Diogo R. Barros, Filipe M. Barradas, Luís C. Nunes, Pedro M. Cabral, José C. Pedro
This work presents a new artificial neural network (ANN) model formulation for RF high-power transistors which includes the S-parameters of the active device. This improves the small-signal extrapolation capability, and the OFF-state impedance approximation, making it suitable for Doherty power amplifier (DPA) design. This extrapolation capability plays a key role in the correct Doherty load modulation
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Experimental Validation of Phase Velocity and Interaction Impedance of Meander-Line Slow-Wave Structures for Space Traveling-Wave Tubes IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-09 Juan M. Socuéllamos, Roberto Dionisio, Rosa Letizia, Claudio Paoloni
Meander lines are promising slow-wave structures (SWSs) for millimeter-wave traveling-wave tubes (TWTs) due to low-cost manufacture, low-voltage operation, and high interaction impedance. However, experimental results on meander lines are rare in the literature. Phase velocity and interaction impedance are the most important parameters for the design and characterization of TWT SWSs. Their experimental
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Fano-Assisted Tunable X-Band Microwave Ring Resonator IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-01 Vinicius M. Pepino, Achiles F. da Mota, Augusto Martins, Emiliano R. Martins, Ben-Hur V. Borges, Fernando L. Teixeira
Control of the resonance frequency of microwave cavities is of great interest in many applications such as sensing and wavelength filtering. However, this task normally relies on active control via functional materials (i.e., polymers and ferrites, or a combination of both) excited by an external electric or magnetic field. In this article, instead, we propose an innovative whispering gallery mode
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Systematic Design Procedure for Y-Junction Circulator Based on Ridge Gap Waveguide Technology IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-24 Shoukry I. Shams, Syed M. Sifat, Mahmoud Elsaadany, Ghyslain Gagnon, Ahmed A. Kishk
A Y-junction circulator based on the ridge gap waveguide (RGW) as a hosting guiding structure is designed using a developed closed-form systematic procedure. To validate the structure, an air-filled-to-dielectric-filled transition is proposed using a substrate perforation technique. The proposed RGW circulator covers the whole Ku-band with a matching bandwidth throughout the operational bandwidth below
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RF Co-Designed Bandpass Filters/Isolators Using Nonreciprocal Resonant Stages and Microwave Resonators IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-17 Andrea Ashley, Dimitra Psychogiou
This article reports on the RF design and practical development of RF co-designed bandpass filters/isolators (BPFIs). They are based on series-cascaded nonreciprocal resonant stages, microwave resonators, and multiresonant cells. The nonreciprocal stages are shaped by an in-parallel cascaded transistor-based path and a transmission line (TL) that result in a zero-phase resonance in the forward direction
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A 10–50-GHz UWB BPF With GSG Probe Transition Using Micromachined Rectangular Microcoaxial Line IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-15 Jin Xu, Zhi-Yu Chen, Hao Wan, Guang-Hong Zhao, Yu-Dong Wang
This article presents a millimeter-wave (mmW) ultrawideband (UWB) bandpass filter (BPF) using micromachined rectangular microcoaxial line ( $\text{R}\mu $ CL). The tightly coupled stepped-impedance stub loaded resonator (TC-SISLR) exhibiting multiple-mode resonator (MMR) property, which has nine controllable transmission poles (TPs) and two controllable transmission zeros (TZs), is proposed to achieve
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High-Selectivity Filtering Patch Antennas Based on MultiPath Coupling Structures IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-12 Kai-Ran Xiang, Fu-Chang Chen, Qian Tan, Qing-Xin Chu
In this article, we present a design method of high-selectivity filtering antennas based on a dual-probe feeding structure. The first stage of the filtering circuit consists of two or three coupled resonators which are then coupled to the radiating patch acting as the last resonator of the filter. Cross-coupling is used to obtain transmission zero, and thus the selectivity of the filtering antennas
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Four-Port Symmetrical Reflectionless Lumped Filter/Diplexer: Prototype and Design Table IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-11 Xiu-Hua Jin, Xiao-Dong Huang, Qiang Ren, Chong-Hu Cheng
It is shown that a well-designed lumped $LC$ loop network with a phase inverter can exhibit perfect reflectionless filtering response at its all four ports. The network is composed of two pairs of symmetrical $LC$ ladder circuits, in which one pair is obtained from lowpass transformation at a prescribed frequency based on a special lowpass prototype, and the other pair is from highpass transformation
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Ultracompact Effective Localized Surface Plasmonic Bandpass Filter for 5G Applications IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-24 Yaru Yu, Liangliang Liu, Qi Jiang, Yufan Zhao, Yaoran Zhang, Yu Luo, Changqing Gu, Zhuo Li
In this article, we present a novel ultracompact plasmonic bandpass filter (BPF) based on a recently proposed concept of effective localized surface plasmons (ELSPs). By virtue of the insensitiveness of the ELSPs resonator’s dipolar mode resonance frequency to the variations of its cross-sectional area and shape, we can significantly miniaturize the occupied area of the filter. Moreover, the unloaded
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Planar Feeding Circuit Integrated With a Compact Dielectric Resonator for Polarization Diversity IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-18 Maksim V. Kuznetcov, Symon K. Podilchak, Jonathan C. Johnstone, Michel Clénet, Yahia M. M. Antar
A compact two-port feeding circuit that supports a dielectric resonator (DR) element is presented for applications requiring polarization diversity. The L-band structure consists of a cylindrical DR that can generate right-handed circular polarization (RHCP), left-handed circular polarization (LHCP), and linearly polarized radiation. The DR dimensions have been optimized considering a relative dielectric
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Low NF and High P1dB Wideband Quasi-Circulator With Unequal Power Split and Reconfigurable Inter-Stage Matching IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-22 Wen Chen, Zhixian Deng, Yiyang Shu, Huizhen Jenny Qian, Xun Luo
In this article, a wideband quasi-circulator (QC) with the low noise figure (NF) and high 1-dB compression point ( $\text{P}_{\text {1 dB}}$ ) is proposed. The slotline-based 180° hybrid is introduced to achieve the wideband high transmitter-receiver (TX-RX) isolation. Meanwhile, the bidirectional in-phase stage and the nonreciprocal out-of-phase stage are utilized to obtain specific power-split ratios
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A Broadband Multistage Self-Interference Canceller for Full-Duplex MIMO Radios IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-05 Haixiang Zhao, Udara De Silva, Sravan Pulipati, Satheesh B. Venkatakrishnan, Shubhendu Bhardwaj, John L. Volakis, Soumyajit Mandal, Arjuna Madanayake
Full-duplex (FD) antenna arrays are desirable for expanding the channel capacity of wireless systems up to 2, which is particularly important in the crowded sub-6-GHz spectral bands. Conventional FD solutions based on circulators do not scale to antenna arrays due to the presence of significant mutual coupling between antenna elements. This article describes a two-stage self-interference cancellation
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Low-Noise Dual-Way Magnetron Power-Combining System Using an Asymmetric H-Plane Tee and Closed-Loop Phase Compensation IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-19 Xiaojie Chen, Bo Yang, Naoki Shinohara, Changjun Liu
To meet the increasing power demands of microwave industries and scientific innovations, a dual-way magnetron (MGT) power-combining system based on an asymmetric H-plane tee combined with closed-loop phase compensation (CLPC) was developed and tested. Only one external injection was used, which could lock both frequencies of the two MGTs via the port coupling of the asymmetric H-plane tee. Additionally
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A SiGe Power Amplifier With Double Gain Peaks Based on the Control of Stationary Points of Impedance Transformation IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-08 Chenxi Zhao, Xu Zhang, Huihua Liu, Yiming Yu, Yunqiu Wu, Kai Kang
A broadband SiGe power amplifier (PA) with double gain peaks for 5G applications is presented. The differential structure is widely adopted in millimeter-wave circuit design to decrease the impact of the source parasitic inductance that is induced by the bonding wires. Since differential PA results in a higher impedance transformation ratio of the matching network, differential PAs generally have narrower
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Enhancing Bandwidth and Back-Off Range of Doherty Power Amplifier With Modified Load Modulation Network IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-12 Yang Xu, Jingzhou Pang, Xiaoyu Wang, Anding Zhu
This article presents a novel methodology for designing a broadband Doherty power amplifier (DPA) with extended output power back-off (OBO) range. A modified load modulation network (LMN) is proposed to enhance the OBO range and the bandwidth of the DPA simultaneously. Analysis is conducted to explore the relationship between the proposed LMN parameters and the broadband performance under various OBO
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Analysis of Process Variations in W-Band GaN MMIC PAs Using Nonparametric Statistics IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-22 Shane Verploegh, Mauricio Pinto, Laila Marzall, Daniel Martin, Gregor Lasser, Zoya Popović
This article presents an analysis of the effects of amplifier process-related performance variation on the radiation patterns of a ${W}$ -band active transmit antenna array. Based on measured on-wafer $S$ -parameters for about 80 amplifier chips designed in an experimental 90-nm gallium nitride (GaN) on SiC process, a statistical analysis of the array patterns is performed. Several types of probability
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Linearity-Enhanced Quasi-Balanced Doherty Power Amplifier With Mismatch Resilience Through Series/Parallel Reconfiguration for Massive MIMO IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-15 Haifeng Lyu, Yuchen Cao, Kenle Chen
A reconfigurable series/parallel quasi-balanced Doherty power amplifier (QB-DPA) is presented with a unique capability of maintaining high linearity and high efficiency against load mismatch, which is highly desirable for massive multiple-input–multiple-output (MIMO) and active array applications. Based on the new QB-DPA topology derived from an ideal balanced amplifier, it is, for the first time,
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Doherty Power Amplifier Based on Asymmetric Cells With Complex Combining Load IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-01 Woojin Choi, Hyunuk Kang, Hansik Oh, Keum Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
This article presents a Doherty power amplifier (DPA) based on asymmetric cells with a complex combining load (CCL). In this study, a new and intuitive design technique using the Smith chart is proposed for developing the load network of the CCL-DPA. The peaking amplifier consists of a larger cell size compared to that of the carrier amplifier in order to achieve higher power gain and peak output power
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Low Noise Amplifier With 7-K Noise at 1.4 GHz and 25 °C IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-10 Sander Weinreb, Jun Shi
This article describes a low noise amplifier which is believed will have a transformative impact because of the following characteristics: 1) the noise temperature at a physical temperature of 25 °C is a factor of 4 lower than typical commercial LNAs; 2) the noise decreases to 4.5 K at a temperature of −40 °C, a temperature realizable with solid-state coolers; 3) the LNA has an integrated, extremely
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Design and Characterization of (140–220) GHz Frequency Compensated Power Detector IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-10 Issa Alaji, Sylvie Lépilliet, Daniel Gloria, Guillaume Ducournau, Christophe Gaquière
This article presents the design and characterization of a real-time frequency-compensated power detector (PD), based on NMOS transistor, integrated in SiGe 55-nm BiCMOS technology from STMicroelectronics, and dedicated to on-chip power detection in the G-band frequencies. An innovative simple circuit (named attenuator) is designed in order to compensate the variation of the voltage sensitivity value
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Analysis and Impact of Port Impedances on Two-Port Networks and Its Application in Active Array Antenna Developments IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-10 Srinaga Nikhil Nallandhigal, Ke Wu
In this work, we present a comprehensive analysis of port impedance effects on a signal coupled across two-port networks, derive an equation to evaluate the impedances for a specified coupling, and demonstrate two beam-shaping active array antenna prototypes to validate the theory. In this context, the generalized S-parameters are theoretically studied and verified through an example. Subsequently
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A 60-GHz Variable Gain Phase Shifter With 14.8-dB Gain Tuning Range and 6-Bit Phase Resolution Across −25 °C–110 °C IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-12 Tianjun Wu, Yunqiu Wu, Xiaoning Zhang, Zhao Xing, Chenxi Zhao, Huihua Liu, Yiming Yu, Kai Kang
This article presents a 60-GHz variable gain phase shifter (VGPS) with orthogonal phase and gain control technique and linear phase control technique in 65-nm CMOS. Using the orthogonal phase and gain control technique, the proposed VGPS has the ability of gain tuning without extra variable gain block, significantly reducing the size of conventional phased arrays. The linear phase control technique
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Time-Domain Characterization and Linearization of a Dual-Input Power Amplifier Using a Vector Network Analyzer as the Receiver IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-09 Thaimí Niubó-Alemán, Chenyu Liang, Yunsik Hahn, J. Apolinar Reynoso-Hernández, Jean-Pierre Teyssier, Patrick Roblin
A newly calibrated testbed based on a commercial vector network analyzer (VNA) is proposed for the fast in-band vector signal characterization and linearization of nonlinear multiport devices. The testbed can acquire both CW and wideband modulated periodic signals without breaking contact with the DUT, in up to five channels. The time-domain measurements are made possible by calibrating all the receivers
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A Coupled-Cavity Resonator Technique for Simultaneous Sensing of Dielectric Load and Position of Continuous Material Streams IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-22 Usman Faz, Thomas F. Eibert
An electromagnetic coupled-cavity resonator equipped with permanent insertion holes and designed to sense continuous dielectric material streams through the resonator is presented. The resonating structure comprises a pair of pill-box-shaped cylindrical cavities mutually coupled to each other through an aperture-loaded metal sheet of finite thickness. The input and output insertion holes in the top
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Corrections to “Analytical Approach to Microwave Orientations Based on a Strongly Coupled Array” IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-04-02 Hao Wang, Fazhong Shen, Xiaokang Qi, Mei Zhang, Jun Wang, Bin Zhang, Changzhi Li, Lixin Ran
In the above article [1] , the authors would like to correct an error in (8) and (9) .
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AI and Machine Learning Based Technologies for Microwaves IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-04-02
Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.
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TechRxiv: Share Your Preprint Research with the World! IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-04-02
Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.
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Introducing IEEE Collabratec IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-04-02
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IEEE Transactions on Microwave Theory and Techniques information for authors IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-04-02
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From Metamaterials to Metadevices and Applications IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-03-04 Jianguo Ma
Metamaterials are artificial electromagnetic (EM) media, exhibiting many exciting EM behaviors totally different from those phenomena of EMs in normal nature media. Now, metamaterials are becoming a paradigm for controlling EM wave properties according to desired purposes.
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Wireless Communication Based on Information Metasurfaces IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-08 Jun Yan Dai, Wankai Tang, Ming Zheng Chen, Chi Hou Chan, Qiang Cheng, Shi Jin, Tie Jun Cui
Metasurface has great capabilities in tailoring the electromagnetic (EM) waves in a controllable way owing to the carefully designed and arranged subwavelength meta-atoms. In this review paper, the digital version of metasurface, information metasurface (IM), is systematically introduced with its application in wireless communications. IM extends the research scope of metasurface from physics to the
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N-Port Equal/Unequal-Split Power Dividers Using Epsilon-Near-Zero Metamaterials IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-13 Ziheng Zhou, Yue Li
In this article, a type of multiport power divider is proposed based on the concept of epsilon-near-zero (ENZ) metamaterials. An arbitrarily shaped ENZ metamaterial comprising a dielectric impurity is connected to $N$ waveguides, and the incident power can be efficiently delivered to output waveguides, with transmitted fields being exactly equal in both amplitude and phase for output branches. Hence
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Analogue of Electromagnetically Induced Transparency Based on Bright–Bright Mode Coupling Between Spoof Electric Localized Surface Plasmon and Electric Dipole IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-08 Sihong Chen, Taisong Pan, Yueyu Peng, Guang Yao, Min Gao, Yuan Lin
We report a novel type of electromagnetically induced transparency (EIT) analogue based on metamaterials (MMs) with hybrid structures, in which spiral and cut-wire structures serve as bright-mode resonators with the spoof electric localized surface plasmons and electric dipole resonance. With the simulations and experiments, the EIT analogue generated by the frequency detuning and hybridization between
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Mixed Spectral-Element Methods for 3-D Maxwell’s Eigenvalue Problems With Bloch Periodic and Open Resonators IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-20 Shi Jie Wang, Jie Liu, Ming Wei Zhuang, Ke Chen, Qing Huo Liu
Two mixed spectral-element methods (MSEMs) are proposed to solve Maxwell’s eigenvalue problems with Bloch (Floquet) periodic and open resonators to remove the dc spurious modes present in the traditional numerical methods. The first MSEM combines the variational form of Gauss’s law to make the electric field satisfy the divergence-free condition. This method does not need to modify the Arnoldi algorithm
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A Novel Design Technique for mm-Wave Mismatch Terminations IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-14 Mahmoud Elsaadany, Mohamed Mamdouh M. Ali, Shoukry I. Shams, Tayeb A. Denidni, Ghyslain Gagnon
The mismatch terminations are essential components in measurement setups of various active and passive microwave components. The main objective of such components is to provide a certain reflection level with a flat response over the operating bandwidth. The need for mm-wave mismatch terminations has increased due to the expansion of using mm-wave frequency ranges in future communication systems. The
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Multisection Combined Gysel–Wilkinson Power Divider With Arbitrary Power Division Ratios IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-20 Reza Nemati, Shokrollah Karimian, Hamed Shahi, Nasser Masoumi, Safieddin Safavi-Naeini
This article presents the design of a microwave multisection combined Gysel–Wilkinson (MSCGW) power divider (PD) with arbitrary power division ratios, wide bandwidth (BW), and high power-handling capability (PHC). Exact design formulas for the $N$ -section PD are derived in the form of closed-form equations through even- and odd-mode analysis. In addition to the novelty of the structure itself, a straightforward
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C-Band Hybrid 3-D-Printed Microwave Isolator IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-02 V. Laur, J. P. Gouavogui, B. Balde
This article presents the design and fabrication of a microstrip $C$ -band microwave isolator using additive technology. Such fabrication requires multimaterial 3-D printing (dielectric and absorber) and the embedding of ferrite ceramic inside the substrate. First, our design demonstrated that an efficient microstrip load can be made by 3-D printing in a single process: not only the dielectric but
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A Compact X-Band Microwave Pulse Compressor Using a Corrugated Cylindrical Cavity IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-08 Yuliang Jiang, Hao Zha, Jiaru Shi, Maomao Peng, Xiancai Lin, Huaibi Chen
Microwave pulse compressors based on a single resonant cavity operating at polarized modes can be super compact, and corrugated structures can transmit high-power, high-frequency microwave with very low loss. We present an $X$ -band (11.424 GHz) pulse compressor using a corrugated cavity with quarter-wavelength depth corrugations working at polarized HE 1-1-14 modes. The cavity has a high-quality factor
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Determination of the Contribution of the Ground-Shield Losses to the Microwave Performance of On-Chip Coplanar Waveguides IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-03 José Valdés-Rayón, Roberto S. Murphy-Arteaga, Reydezel Torres-Torres
In this article, we characterize and model two parasitic effects that become apparent in the performance of coplanar waveguide interconnects in CMOS. One is the transverse resistance introduced by a patterned ground shield in coplanar waveguide interconnects, which significantly contributes to the shunt losses. The other one is the parasitic coupling between the input and output ports through the ground
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X-Band Miniature Filters Using Lithium Niobate Acoustic Resonators and Bandwidth Widening Technique IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-27 Yansong Yang, Liuqing Gao, Songbin Gong
This work presents a class of micro-electro-mechanical system (MEMS)-driven radio frequency filters in the X-band. The X-band center frequencies are achieved by resorting to the third-order antisymmetric Lamb wave mode (A3) in a 650-nm-thick Z-cut lithium niobate thin film. A novel bandwidth (BW) widening technique based on using the self-inductance of the top interdigital transducers and bus lines
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A Design Approach for Compact Wideband Transformer With Frequency-Dependent Complex Loads and Its Application to Wilkinson Power Divider IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-12 Liang Liu, Xianling Liang, Ronghong Jin, Haijun Fan, Xudong Bai, Han Zhou, Junping Geng
In this article, a new design approach for the wideband transformer with frequency-dependent complex loads is proposed, which is based on the least-square method and the generalized modified small reflection theory (MSRT) with proper electrical parameters. Compared with the wideband transformers based on other approaches such as the generalized MSRT and transmission line theory, the proposed ones feature
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Reduced-Length Tandem Directional Couplers Composed of Coupled-Line Sections With Fixed Coupling Coefficient IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-02-02 Krzysztof Wincza, Kamil Staszek, Slawomir Gruszczynski
A novel concept of tandem coupled-line directional couplers has been proposed. The proposed couplers consist of coupled-line sections having different electrical lengths and fixed identical coupling coefficients regardless of the required nominal coupling of the entire tandem coupler. It is proved that the available coupling in coupled-line sections constituting tandem directional couplers can be used
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A 2–20-GHz Ultralow Phase Noise Signal Source Using a Microwave Oscillator Locked to a Mode-Locked Laser IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-15 Meysam Bahmanian, J. Christoph Scheytt
In this article, we develop the theory of a special type of optoelectronic phase-locked loop (PLL). The output signal of this type of PLL is in the electrical domain and its reference oscillator, typically a mode-locked laser, operates in the optical domain. The PLL uses a balanced optical microwave phase detector (BOMPD). In order to model the optoelectronic PLL, the nonlinear characteristic function
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Low-Power Differential Input to Single-Ended Output GaN RF-DAC for RF-Signal Generation IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-18 Markus Weiß, Christian Friesicke, Rüdiger Quay, Oliver Ambacher
A low-power differential input to single-ended output digital-to-analog converter (DAC) is presented, which is capable of providing radio frequency (RF)-signals with a data rate of up to $\mathrm {8~G}$ bit/s. A constant direct current (dc) current source is realized as a self-bootstrapping device in the presented 0.25- $\mu \text{m}$ in-house gallium nitride (GaN) technology. First, measurements with
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A 13.5-dBm 1-V Power Amplifier for W-Band Automotive Radar Applications in 28-nm FD-SOI CMOS Technology IEEE Trans. Microw. Theory Tech. (IF 3.413) Pub Date : 2021-01-20 Claudio Nocera, Giuseppe Papotto, Andrea Cavarra, Egidio Ragonese, Giuseppe Palmisano
This article presents a $W$ -band power amplifier (PA) for automotive radar applications. It was designed in a 28-nm fully depleted silicon-on-insulator CMOS technology with a transition frequency of around 270 GHz and a standard back-end-of-line. The circuit adopts a pseudo-differential topology with coupling transformers, which allow both compact matching networks and layout-optimized interstage