样式: 排序: IF: - GO 导出 标记为已读
-
Filtering wideband omnidirectional patch antenna with four operation states Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-03-02 Jun Huang, Jiawei Zhu, Huimin Li, Danle Ma, Hui Tang, Jie Ge, Xue-Feng Zhang, Li-Heng Zhou, Jian-Xin Chen
A filtering wideband omnidirectional patch antenna with switchable dual bands is proposed to fulfil four operation states in this paper. Firstly, five resonant modes of the antenna are simultaneously and simply excited to enable the dual-band operation. Radiation nulls are generated beyond the bands, which improves the frequency selectivity and out-of-band suppression for the antenna. Furthermore,
-
Pattern reconfigurable antenna with two-dimensional beam steering capability using metasurface Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-03-01 Venkataswamy Suryapaga, Vikas V. Khairnar
A two-dimensional (2-D) beam steering pattern reconfigurable antenna with an active partially reflecting surface (PRS) is presented in this paper. The proposed design incorporates a U-slot patch antenna functioning as a radiator and a superstrate composed of an active PRS layer. The PRS superstrate layer consists of 6 × 6 unit cells, divided into four sections, each comprised of 3 × 3 unit cells. To
-
Design and development of a new circularly polarized MIMO wearable DRA for WBAN applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-29 Usman Illahi, Javed Iqbal, Shahid Mahmood Ramay, Mohamad Ismail Sulaiman
In this study, a new circularly polarized (CP) multiple-input–multiple-output (MIMO) wearable dielectric resonator antenna (WDRA) has been investigated for the first time for wireless body area network (WBAN) applications. Each WDRA has been energized using a unique H-shaped feeding strip. Using the specialized geometry of the feeding strip the higher-order degenerate modes, TE and TE have been excited
-
Compact wideband two-element millimeter wave MIMO antenna with CMT based modified T-shaped decoupling structure for mobile applications with estimated link budget in urban scenario Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-29 B.G. Parveez Shariff, Tanweer Ali, Pallavi R. Mane, Praveen Kumar, Sameena Pathan
Today, almost all wireless application systems and devices are switching to millimeter waves (mmWave) to cater to the demand for low latency with higher data rates. A two-element MIMO antenna is proposed to support enhanced data rate and to cover a wide range of applications at 5G new radio (NR 2) band. The structure has a compact profile of ( is the first resonance wavelength at 18 GHz). The radiating
-
Wideband filtering power divider based on D-CRLH resonator Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-24 Qilei Fan, Chuanyun Wang, Hao Huang, Xuehui Guan
In this paper, a wideband filtering power divider (FPD) based on dual-composite left–right-handed (D-CRLH) resonator is proposed. The D-CRLH filter unit, featuring a parallel stepped impedance resonator (SIR), is used to replace the λ/4 transmission line of the Wilkinson power divider, which can make the FPD more compact. Due to the inherent characteristics of D-CRLH resonator, two transmission zeros
-
Rotating permanent magnet antenna array for directional communication in pipeline monitoring system Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-23 Yichao Zhang, Yong Cui, Chen Wang, Xiao Song, Yu Pei, Zhihong Yuan
As a novel pipeline monitoring technology, wireless sensor networks (WSN) have the advantages of low power consumption, flexibility, and robustness in aboveground, underground, and underwater pipeline monitoring systems. Using low-frequency (LF) rotating permanent magnet antennas (RPMA) for communications from sensor nodes (SN) to autonomous unmanned vehicles (AUV) has the advantages of low attenuation
-
Performance enhancement of low-cost microstrip patch antennas through 3D-printed conductive geometric forms Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-23 Tristan Fougeroux, Alexandre Douyère, Nour Mohammad Murad, Julie Sibille, Shailendra Oree, Jean-Lou Dubard
With the development of new wireless communication systems, antennas will require excellent characteristics, including high gain, wide bandwidth, and low losses. 3D printing creates structures through an additive process, layer by layer, which enables the manufacturing of antennas with 3D shapes in a cheaper, faster, and more flexible manner. This paper presents a new design for a 3D-printed microstrip
-
In-depth Multi-Objective charge pump design space exploration towards the automatic synthesis of power management units Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-23 Carlos Santos, Jorge Fernandes, Marcelino Santos, Ricardo Martins
The inclusion of automation mechanisms in the intricate design of power management units (PMUs) is long pursued in industry. This paper addresses a mixed-signal design flow whose purpose is to automatically produce, from the system-level to the ready-for-tape-out layout, complex PMUs when given a set of specifications. Particularly, in that flow, at the IP level, the proper analysis of the design tradeoffs
-
DHT-based GFDM and STC-GFDM systems for beyond 5G wireless networks Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-23 Surbhi Kalsotra, Ashutosh Kumar Singh, Hem Dutt Joshi
This manuscript endeavours an exploration of Generalized Frequency Division Multiplexing (GFDM) as a promising alternative to the Orthogonal Frequency Division Multiplexing (OFDM) in next-generation cellular networks. GFDM’s exceptional performance in minimizing out-of-band emissions (OOBE) and maximizing spectral efficiency (SE) makes it a compelling candidate, especially when integrated with Multi-Input
-
SIW based in-phase Gysel equal power divider for X-band application Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-22 Brij Kumar Bharti, Amar Nath Yadav
This article presents a novel approach to designing fixed-width Gysel equal power divider (PD) in Substrate integrated waveguide (SIW) technology. Since the width and impedance of SIW are functions of its cut-off frequency, therefore, conventional Gysel PD design equations become non-applicable in SIW technology. Keeping this constraint, dependency of SIW line widths on operating frequency, novel design
-
Airborne distributed array position calibration using sparse spatial-frequency accompanying flight MISO array Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-21 Liubo Hu, Jianxin Wu, Lei Zhang
-
Compact lowpass filter with vast out-of-band rejection utilizing DGS Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-21 Eman G. Ouf, Anwer S. Abd El-Hameed, Esmat A.F. Abdallah
A unique low-profile microstrip lowpass filter (LPF) is introduced. It features a broad range of stopband and sharp roll-off. The suggested LPF is built utilizig a T-shaped configuration which includes a stub for resonance and utilizes open stubs as attenuator cells. To further improve the stopband, a double circular ring is engraved into the ground plane. The developed filter features a cut-off frequency
-
Metasurface based antenna array with improved performance for millimeter wave applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-20 Saba Tariq, Arbab Abdur Rahim, Waleed Tariq Sethi, Farooq Faisal, Tarek Djerafi
This article presents an efficient ultra-miniaturized metasurface-based antenna array with high gain and wider bandwidth for millimeter-wave applications. The presented 1 × 2 compact array incorporates two patches with rectangular slots for gain, impedance matching, and bandwidth enhancement. Further performance is improved by designing a single-layer compact reflecting metasurface with a 2 × 4 array
-
Planar wideband balanced-to-balanced microstrip diplexer with reflectionless characteristics Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-19 Shipeng Zhao, Zhongbao Wang, Mingming Gao, Hongmei Liu, Shaojun Fang
In this paper, a planar wideband balanced-to-balanced microstrip diplexer with excellent reflectionless characteristics is presented. In order to solve the problem of interference caused by reflected energy in wireless communication systems for conventional balanced diplexers, a novel design concept of a balanced absorptive diplexer with reflectionless characteristics is realized by loading reflectionless
-
Wide-angle scanning and Wideband millimeter-wave phased array with Enhanced Isolation using Novel Triple-function Electric Walls Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-17 Zheng-Biao Wang, Zhi-Hong Tu, Yu-Qi Ma, Zi-Qi Bi, Wei Xie
A wide-angle scanning millimeter-wave (mm-wave) phased array with enhanced bandwidth and isolation using novel triple-function electric walls (TEWs) is presented in this work. First, a novel concept for element beamwidth broadening is proposed by using a suspended horizontal magnetic current (SHMC) with a conical pattern. Then, based on this concept, an antenna element is designed using the proposed
-
A high-efficiency optimized bias-flip energy harvesting system for IoT applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-16 Sajad Hadidi, Alireza Hassanzadeh
This paper presents a high-efficiency optimized bias-flip energy harvesting system for Internet of Things (IoT) applications. The harvester consists of a piezoelectric transducer and an interface circuit. Unlike previous bias-flip harvesters, a piezoelectric transducer uses an optimized electrode structure instead of a monolithic electrode to reduce the internal capacitance of the piezoelectric transducer
-
Millimeter-wave 3D-printed filtering power divider with high frequency selectivity and enhanced heat dispersion Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-16 Sifan Wu, Jianxing Li, Jianhe Wang, Yuanxi Cao, Haidong Zhou
In this paper, a 3D-printed filtering power divider with high frequency selectivity and enhanced heat dispersion is proposed in the Ka-band. Based on filter synthesis theory, a meticulous design is implemented for 32 rectangular resonators and their adjacent inductive irises, enabling the simultaneous realization of a 1-to-8 power divider function and an integrated 11th-order filtering response. To
-
A magnetless filtering circulator with enhanced isolation bandwidth using mixed static and time-modulated resonators Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-16 Girdhari Chaudhary, Yongchae Jeong
This paper presents a design of magnetless microstrip line circulator with filtering response and extended isolation bandwidth through integration of mixed static and time-modulated resonators. By effectively coupling static resonators with time-modulated resonators, the proposed circulator can achieve a low forward transmission insertion loss with filtering response along with a wide isolation bandwidth
-
One-bit reconfigurable reflective metasurface based on electromagnetically wideband element Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-15 Yuhan Wu, Shixing Yu, Na Kou, Zhao Ding, Zhengping Zhang
In this paper, a one-bit reconfigurable reflective metasurface is proposed by electromagnetically wideband elements is proposed. The element has a double-layer structure, the lower dielectric plate is driven by a electromagnetically push-pull solenoid to adjust the air layer thickness between top layer. The element has a wideband characteristic, the phase difference between 1 bit and 0 bit in 9.3 GHz–16
-
Excitation of circularly polarized wave via single-feed metasurface-integrated compact antenna for internet of things Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-15 Shahanawaz Kamal, Ubaid Ullah, Slawomir Koziel
A compact circularly polarized (CP) quasi-omnidirectional antenna is introduced for internet of things (IoT). The structure consists of two components implemented on FR-4 substrates, and separated by an air gap: one printed with a rectangular patch fed through a matching network, and another with a metasurface and a ground plane. Two different methods for impedance matching are employed. An equivalent
-
Synthesis of a steerable frequency-invariant radiation pattern for broadband scalable antenna arrays Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-15 Andrzej Dudek, Slawomir Gruszczynski, Krzysztof Wincza
This paper discusses the synthesis of a steerable frequency-invariant radiation pattern for broadband scalable antenna arrays (SAAs). The proposed method allows to achieve constant beamwidth and beam direction over a bandwidth and is based on an appropriate radiating elements’ placement in the SAA and a proper amplitude and phase excitation of the array. Both amplitudes and phases of signals exciting
-
Frequency-adjustable OAM antenna with co-divergent beams for IoT applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-15 Hassan Naseri, Peyman Pourmohammadi, Noureddine Melouki, Fahad Ahmed, Amjad Iqbal, Tayeb Denidni
A frequency-tunable Orbital Angular Momentum (OAM)-generating antenna array system is introduced for the first time to provide high-data-rate and secure communication for Internet of Things (IoT) infrastructures and devices. Propagation of simultaneous OAM modes brings about the high-data-rate and frequency tunability leads to interference suppression for secure communication. Regarding the design
-
Interference aware two-tier fair user-cell association Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-15 Baris Yuksekkaya, Uygar Demir, Gurhan Bulu
The deployment of heterogeneous networks (HetNets) incorporating small cells within macrocells has emerged as a predominant strategy to improve the performance of cellular communication systems. This study delves into the intricacies of user-cell association within HetNets and introduces an optimized approach that not only maximizes the sum of downlink signal-to-noise ratio (SNR) but also limits uplink
-
Retraction notice to “Minimizing cosecant-squared pattern side lobe level of linear array antenna by genetic algorithm and optimizing feed network” [AEU – Int. J. Electron. Commun. 145 (2022) 154076] Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-15 Mehdi Sharifi, Pejman Rezaei
-
A wide bandstop filter using negative permeability achieved by complementary electrical L-C resonators Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-13 Yalda Torabi, Mohammad Taher Hoseinie Farahani, Gholamreza Dadashzadeh, Ali Lalbakhsh
This paper proposes an improved approach for designing a compact microstrip line-based band stop filter (BSF) using a new Z-shaped complementary electrical LC (CELC) resonator with negative permeability. The design offers advantages in terms of compactness and large stopband. The measured insertion loss exhibits a 3 dB bandwidth from 6.7 to 9 GHz, resulting in a relative stopband bandwidth of 28.75%
-
A simplified and efficient approach for designing microstrip bandpass filters: Applications in satellite and 5G communications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-12 Leila Nouri, Lewis Nkenyereye, Mohammed Abdel Hafez, Fawwaz Hazzazi, Muhammad Akmal Chaudhary, Maher Assaad
The C-band is extensively utilized in aviation radars and satellite communications (Satcom). Bandpass filters (BPFs) are crucial components in microwave systems operating within this frequency range. Therefore, it is important to develop a straightforward and effective method for designing BPFs with desired response characteristics. Currently, the prevailing approach for designing wideband microstrip
-
A technique for the passband and stopband control of wideband band-pass substrate integrated waveguide (SIW) filters designed with elliptic stepped impedances Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-12 Clara Máximo-Gutiérrez, Juan Hinojosa, Alejandro Alvarez-Melcon
In this paper, a design technique based on a stepped impedance synthesis is proposed for the first time for the passband and stopband control of band-pass filters in substrate integrated waveguide (SIW) technology. The structure of the band-pass filters is implemented by means of elliptic patterns etched on the top side of the SIW, which work as impedance inverters. The design method consists of previously
-
A dual-band wideband high-gain slot loaded microstrip patch antenna Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-12 Long Jin, Ruohan Zhang
This paper presents a dual-band, wideband, high-gain microstrip patch antenna applied to 5G band. The antenna consists of two rectangular radiation patches of different sizes, connected by a microstrip line and fed by a coaxial line. The dual-band is achieved by both rectangular radiation patches producing dual target resonant frequency points. This antenna provides the freedom for adjusting both resonant
-
-
High isolation MIMO antenna designed with tightly coupled microstrip patch pairs Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-10 Xi Wang Dai, Wen Hao Hu, Hui Hong, Guo Qing Luo
This paper proposes an array antenna with high isolation for MIMO application. Two tightly coupled microstrip patch pairs are proposed as array element with two rectangular stubs connected. By adjusting the position and width of the stubs, good resonant frequency matching can be achieved, and isolation can be effectively improved across the operating frequency band. Furthermore, 1 × 2 and 1 × 4 arrays
-
Modified Error Function Companding for reduction of PAPR in GFDM signals Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-10 Nivetha Vinayakamoorthi, Sudha Vaiyamalai
Generalized Frequency Division Multiplexing (GFDM) is a multicarrier modulation technique, nevertheless, it provides high peak to average power ratio (PAPR) which affects the power amplifier (PA) efficiency. In this work, the modified error function companding is proposed for reducing PAPR in GFDM signals. The power scaling parameter () and companding parameter () are used to reduce the peak power
-
A New Ultra-Low Power Wide Tunable Capacitance Multiplier circuit in Subthreshold Region for Biomedical Applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-10 Mohammad Aghaei Jeshvaghani, Mehdi Dolatshahi
Implementing large capacitors in integrated circuits demands an occupation of a relatively significant large silicon area on-chip, which strictly limits the capability of the physical implementation of low-frequency integrated circuits that mostly require high capacitance values to provide large time-constants. Capacitance multipliers have been proposed to overcome this issue to realize high-value
-
Improved frequency compensation technique of three stage amplifier using class AB flipped voltage follower and slew rate enhancer circuit Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-09 Om Krishna Gupta, Neeta Pandey, Maneesha Gupta
In this work, two frequency compensated three stage amplifiers are proposed for 20 pF and 30 pF capacitive load. Both the proposed circuits utilize class AB Flipped Voltage Follower (FVF) along with Reversed Nested Miller Compensation (RNMC) to address RHP zero issue. Further, the proposed circuits 1 and 2 employ a slew rate enhancer circuit to improve the slew rate. Additionally, both the circuits
-
Dual-mode aperture-coupled patch resonator based dual-band higher-order frequency selective surfaces Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-09 Mohan K.N., Yogesh Kumar Choukiker
In this article, a low profile aperture coupled dual band higher order bandpass frequency selective surface (FSS) is proposed. To begin, a simple patch resonator with an L-shaped truncated corner is theoretically examined such that two orthogonal modes can be activated at the same time. Following that, a combination of four identical L-shape truncated patch resonators with 90° rotation between two
-
An orbital angular momentum metasurface antenna with broadband radar cross section reduction Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-08 Peilin Chen, Junyu Ren, Tianhu Zhang, Qi Zheng, Xiaoyan Pang
In this paper, a multifunctional metasurface antenna is proposed that can both generate orbital angular momentum (OAM) vortex waves with two different modes and reduce the radar cross section (RCS) in a broad band. By utilizing the generalized Snell’s law, a phase-gradient matesurface is proposed as the coating of the antenna to realize a broadband RCS reduction in the range of 11.8 GHz–29 GHz. The
-
A Current-configurable Charge Pump with Current Mismatch Compensation for Wide Output Frequency Range Phase-locked Loop Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-07 Jiahui Han, Xingyuan Tong
-
Time and relay shared full/half duplex cooperative NOMA with paired cell edge users Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-07 Smriti Dubey, Neelesh Mehra, Devendra Kumar Shakya
In this work, a novel time and relay shared (TRS) based full/half duplex (FD/HD) cooperative non-orthogonal multiple access (C-NOMA) scheme namely TRS FD/HD C-NOMA is proposed to efficiently exploit the spectrum of unpaired users in the wireless communication system. More specifically, a scenario has been investigated where cell edge users (CEUs) are more than the cell centre users (CCUs) and the base
-
A 18–33 GHz CMOS LNA with 26.7 dB peak gain and 2.8 dB minimum NF for K/Ka-band applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-07 Jiang Luo, Yi Shen, Yao Peng, Qiang Cheng
In the paper, a 18–33 GHz wideband low noise amplifier (LNA) with a T-type inductive network is proposed. The T-type inductive network generates two dominant poles at different frequencies for interstage bandwidth extension. As a result, the 3 dB bandwidth of the amplifier is efficiently expanded while maintaining low noise figure (NF), high gain, and a small footprint. For verification, a two-stage
-
Pipelined training accelerator for portable devices Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-06 Rituparna Choudhury, Shaik Rafi Ahamed, Prithwijit Guha
To perform classification for a particular application, a Decision Tree (DT) model first needs to be trained using that application data. Due to high complexity, DT training implemented on software platforms is time-consuming. So, hardware platforms like Field Programmable Gate Array (FPGA) and Application Specific Integrated Circuits (ASICs) can be used to accelerate the process. Also, DT training
-
A novel high-gain antipodal vivaldi antenna for 5G MM-wave applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-03 Jun Li, Hongli He, Shijie Xiong, Guangyin Feng, Yanjie Wang
This paper presents a high-gain and ultra-wideband antipodal Vivaldi antenna (AVA) with vias-loaded linearized edges for 5G millimeter-wave applications. By replacing the traditional exponential tapered edge by linear tapered slot (LTS), the side-lobe is obviously descended. Moreover, metal vias are loaded on radiation edges, more energy in the main radiation direction is constrained and the antenna
-
A high-gain millimeter-wave filtering antipodal Vivaldi antenna based on SSPP structure Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-03 Jun Li, Hanwen Guo, Hongli He, Shijie Xiong, Guangyin Feng, Yanjie Wang
A novel high-gain filtering antipodal Vivaldi antenna based on spoof surface plasmon polariton (SSPP) structure for 5G millimeter-wave applications is proposed in this paper. By loading the metal vias (MV) on the linear tapered slot (LTS) edge, the directionality and gain are improved. Filtering performance is achieved by SSPP subwavelength structure employed on the feeding of AVA. The dimension of
-
Energy-efficient joint resource allocation for heterogeneous cellular networks with wireless backhauls Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-03 Jingya Ma, Hongyuan Gao, Lantu Guo, Huishuang Li
The extensive utilization of wireless services, coupled with the exponential surge in data traffic, has triggered substantial energy consumption. Thereby, growing attentions have been paid to energy-efficient heterogeneous cellular networks (HCNs). In this paper, we concentrate on the joint resource allocation issue under the framework of the non-orthogonal multiple access (NOMA) assisted HCNs with
-
A Reliable and high performance Radiation Hardened Schmitt Trigger 12T SRAM cell for space applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-02 Lokesh Soni, Neeta Pandey
-
Shorting pins-based triple band circularly polarized modified monopole compact dual-port MIMO antenna for sub-6 GHz wireless applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-02 Usha Sharma, Garima Srivastava, Mukesh Kumar Khandelwal, Rashmi Roges
A shorting pin-based, compact two-port MIMO, modified monopole antenna with high isolation, circular polarization (CP) and pattern diversity is presented for 5G wireless applications. The antenna shows −10 dB impedance bandwidth of 550 MHz (0.95 GHz–1.50 GHz), 320 MHz (3.35 GHz–3.67 GHz), and 410 MHz (5.01 GHz–5.42 GHz) with excellent isolation of over −20 dB within all three operating bands. The antenna
-
Low Cross-Polarization High-Isolation 2-Element MIMO Antenna for Unmanned Aerial Vehicle Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-02 Uday A. Patil, Anandrao B. Kakade, Atula U. Patil
This work presents an approach with a compact, high-gain Multi Input Multi Output (MIMO) antenna tailored for the 4.5 GHz Unmanned Aerial Vehicle (UAV) band. This work innovation lies in its reduced size achieved through a truncated circular patch and the integration of a circular modified mushroom-type Electronic Band-gap (EBG) structure. The incorporation of the proposed modified mushroom-type EBG
-
RapidIP — Automated design of a 220–260 GHz power amplifier in a 130 nm BiCMOS technology Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-02-02 David Bierbuesse, Florian Dietrich, Eduard Heidebrecht, Renato Negra
In this work, the automated design of a power amplifier circuit in a 130 nm BiCMOS technology operating in the 220 GHz to 260 GHz frequency range is presented. The design automation process is based on the RapidIP approach, which enables the evaluation, rating and optimisation of thousands of different circuit topologies within only a few minutes. In total optimisation steps and different circuit topologies
-
A low-profile wideband omnidirectional antenna with reconfigurable tri-polarization diversity Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-25 Yang Wu, Hucheng Sun
This paper presents a low-profile wideband omnidirectional antenna with reconfigurable tri-polarization. The proposed antenna is composed of a center-fed circular patch part that generates vertically polarized electromagnetic (EM) waves and a bent-branch connected patch part at the bottom that generates horizontally polarized EM waves. By loading PIN diodes on the symmetrical curved branches, the directions
-
Compact bandpass filter with ultra-wide stopband based on spoof surface plasmon polaritons for sub-6G application Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-24 Baoping Ren, Wenjian Chen, Xuehui Guan, Shaopeng Wan
In this paper, a newly ring-shaped spoof surface plasmon polaritons (SSPPs) structure is proposed for the construction of bandpass filter (BPF) with combing the short-circuited stubs (SCSs). Compared with the conventional rectangular-shaped SSPPs unit, the proposed ring-shaped SSPPs unit has a relative lower cutoff frequency at the same periodic unit size. Moreover, the high-order modes of the ring-shaped
-
Sidelobe level reduction in pattern synthesis of a non-uniform series-fed microstrip antenna array using the TLBO algorithm Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-23 Hossein Khalili, Karim Mohammadpour-Aghdam, Saeid Alamdar
In this paper, a series-fed microstrip patch antenna array with high gain and extremely low sidelobe levels, operating at 24 to 24.25 GHz, is presented. This antenna is fabricated on a single-layer PCB substrate. Due to its features such as compactness, lightweight, low cost, high gain, and narrow beamwidth, it can be used in many applications such as perimeter surveillance and collision-avoiding radar
-
A feature extraction and recognition method for interrupted sampling repeater jamming Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-23 Wenxu Zhang, Kang Luo, Zhongkai Zhao, Jingyi Yang
In order to achieve anti-jamming, radar needs to identify the jamming signals to distinguish between the target echo signals and the jamming signals. Interrupted sampling repeater jamming (ISRJ) is a widely used jamming type in radar and electronic countermeasures. In this paper, we propose an efficient channel attention (ECA)-based one-dimensional residual neural network method for the ISRJ signal
-
A partial soft-switching SiC-based ANPC single-phase inverter with loss model-based dead time optimization for grid-tied PV systems Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-23 Wenjie Ma, Hui Li, Shan Yin, Xiaohu Pang
Single-phase string inverter has been widely applied to grid-tied photovoltaic (PV) rooftop applications for its renewable energy. However, the inherent attribute of intermittency in solar energy may induce instability and unqualified power. To meet the grid-interconnection standards, high demands of efficiency and harmonic distortion need to be imposed on DC/AC inverters. Conventional soft-switching
-
A bandwidth-enhanced orthogonally polarized dual band reflectarray antenna Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-25 Kavitha Narayanasamy, Gulam Nabi Alsath Mohammed, Shrivastav Arunkumar
The design, and experimental validation of a single layer, transmit-receive reflectarray antenna (RA) to operate over a wide uplink and downlink frequency range of fixed satellite service is reported in the paper. The RA element is constructed using concentric circular patches with square slots etched on TLY 5 substrate backed by the metallic ground. A gradual increase in the radius of the rings offer
-
Synthesis design of high-selectivity wideband balanced bandpass filter based on parallel coupled lines Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-27 Pin Wen, Yuxi Jiang, Foxiang Liu, Chuanyun Wang, Zhewang Ma, Yuhao Wang
In this paper, a high-selectivity equal-ripple wideband balanced bandpass filter (BPF) is proposed. Comprising two parallel coupled lines (PCLs) linking the 50-Ohm input and output feedlines, a pair of branch lines connecting the respective differential input and output ports, and a transverse transmission line interconnecting the left and right branch lines within the symmetrical plane SS', this design
-
Direct synthesis method of wideband tunable filtering phase shifter based on complex matched transversal multiple resonances Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-20 Hao Li, Xin Guo, Lei Zhu, Wen Wu
In this article, a wideband filtering phase shifter (FPS) based on transversal multiple resonances is proposed. By utilizing transversal resonances with complex impedance, a wide operation band is achieved with compact circuit size. By doubly loading the tunable external coupling networks (ECNs) with complex impedance, the FPS obtains continuous phase tuning with stable filtering performance. In addition
-
A dual-port, single-fed, integrated microwave and mm-wave MIMO antenna system with parasitic decoupling mechanism for 5G-enabled IoT applications Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-20 Sourav Ghosh, Gaurav Singh Baghel, M.V. Swati
The integration of microwave and mm-wave antenna is recognized as a promising solution to ensure backward compatibility while effectively utilizing available space for 5G-enabled modern IoT devices. This paper proposed a very compact size multi-band dual-port MIMO antenna module, aiming to provide complete coverage in microwave frequency bands, including 2.4 GHz, 3.5 GHz, 5.3 GHz, and 7.5 GHz, along
-
Analysis of RF energy harvesting assisted RF/FSO system with SSK modulation in smart city Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-20 Shaik Mohammed Ali, Hemanta Kumar Sahu, Sudhansu Sekhar Singh
In this paper, the performance of smart city network infrastructure is studied using space shift keying (SSK) modulation and radio-frequency (RF) based energy harvesting with cooperative amplify-and-forward (AF) and decode-and-forward (DF) relaying. Here, the Wireless-enabled sites can communicate data to the control unit via the access point (AP). The sites function by utilizing an energy-saving mechanism
-
Design of a two-port reflectionless waveguide bandpass filter with high power handling capability Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-21 Ya-Hui Zhu, Xin-Yue Fang, Xing Xie, Ling-Ling Yang, Jian-Xin Chen
This paper proposed a two-port reflectionless bandpass filter (BPF) based on the waveguide implementation, which is required in high power-handling and low-loss applications. The two-port reflectionless waveguide BPF working mechanism is first addressed, where a four-port scheme is constructed by combining a pair of wideband 3-dB quadrature couplers and two identical reflective BPFs. The undesired
-
Research and design of metasurface antennas based on composite dielectric materials Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-22 Chun Ni, Weijia Zhang, Liang Zhang
The metasurface has the ability to regulate electromagnetic waves, which is widely used for polarization state control, impedance bandwidth expansion, vortex beam generation, and high-directional antennas. Research shows that the substrate of the metasurface has a significant impact on the performance of the antenna. The equivalent dielectric constant of composite dielectric materials is investigated
-
Indoor wireless channel characterization in the W band for the planning of 6G communication systems Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-20 Concepción Sanchis-Borrás, María-Teresa Martínez-Inglés, José-Víctor Rodríguez, José-Maria Molina-Garcia-Pardo
This work presents a wireless channel characterization based on an extensive campaign of massive multiple-input multiple-output (mMIMO) measurements conducted under line-of-sight (LOS) conditions. These measurements focus on the 94 GHz band (W band), and the results are compared to the same positions measured at 60 GHz. The values of the relative received power, root mean square (RMS) delay spread
-
An anisotropic PRS for squinting the radiation pattern with gain improvement of MIMO system Int. J. Electron. Commun. (IF 3.2) Pub Date : 2024-01-17 Tripta Kumari, Kundan Kumar Suman, Ravi Kumar Gangwar, Raghvendra Kumar Chaudhary
This work presents the design and analysis of a new anisotropic Partial Reflective Surface (PRS) to address beam squinting as well as gain improvement, using the phase gradient property of periodic structure in a 3-port Multiple Input Multiple Output (MIMO) system. An angular tilt of 30° is obtained relative to the boresight direction by manipulating the transmission properties. Additionally, the gain