Presents the front cover for this issue of the publication.

Presents the table of contents for this issue of this publication.

This issue of IEEE Antennas and Propagation Magazine (APM) starts with a special section "Artificial Intelligence in Electromagnetics." I am very grateful to the guest editors and editorial board members of APM, Prof. Randy Haupt and Prof. Paolo Rocca, for proposing and editing this cluster of excellent articles. The topic is attracting increasing interest in our community, and this special section

Provides a brief report on IEEE Antennas and Propagation Society (AP-S) activities as we move on in 2021.

Artificial intelligence (AI) attributes a positive human quality (intelligence) to a machine, thus making it artificial. AI has the potential for "good" and "bad." This issue of IEEE Antennas and Propagation Magazine (APM) offers three "good" review contributions updating readers on the applications of AI in our field of antennas and propagation (AP). The articles are briefly summarized.

Some typing errors like in Figures 23 and 24 must be corrected from "n = 1" to "n = 4" according to the kind suggestion of our colleagues. Wave impedance does not deal with antenna performance, but instead with wave propagation. However, the calculations have been performed by means of software WIPL-D according to Figure 1 and for several antenna heights. These results are presented in Tables 1 and

A novel dual-band electronically beam scanning antenna based on a slot active frequency-selective surface (SAFSS) is proposed in this article. Each unit cell used in an SAFSS screen has two slots with four variable capacitors utilized to achieve high tuning ranges and dual modes. To achieve an adequate single mode, specific capacitances are used in each slot to overlap the two resonances. These dual

Massive multiple-input, multipleoutput (MIMO) is seen as an enabling technology for 5G communication systems [1]. Future base stations (BSs) featuring massive MIMO technology are expected to be equipped with a large number of antennas with digital beamforming structures, where the signals of all the channels are independently accessible. The array radiation pattern can be controlled via setting proper

The control and manipulation of electromagnetic (EM) waves has reached a new level with the recent understanding of topological states of matter. These metamaterials have the potential to revolutionize many areas in traditional EM design, from highly robust cavities to small-footprint waveguides. Much of the past literature has been on the cutting edge of condensedmatter physics, but there are now

This program is established and sponsored by the IEEE Antennas and Propagation Society and administered by its Membership and Benefits Committee. It is open to all 1st/2nd year Ph.D. students from any country of residence. The program provides partial financial support for international students planning to travel and attend the IEEE AP-S/URSI International Symposium to be held in December 2021, in

To introduce the wide range of topics covered in the first issue, I decided to put together this short quiz, based on some of the articles. It is now time to grab a pen and test your own knowledge of microwaves! No Googling allowed. The answers appear on the next page.

The topic of electromagnetics is rather difficult for students to grasp and for instructors to teach. On the other hand, its importance to technical education can hardly be overstated. This article addresses some of the challenges in the methodology and practice of electromagnetics teaching and learning in general and in particular related to the conceptual understanding of the material and associated

In the April issue of IEEE Antennas and Propagation Magazine, I mentioned that the History Committee is interested in receiving proposals for possible IEEE Milestones. Recently, one Milestone possibility was suggested that is quite unique from ones that have been discussed so far and also it was local to me. This is the Thompson-Lampard calculable capacitor [1]. A.M. (Mel) Thompson found experimentally

This issue’s contribution to the "Women in Engineering" column is from Prof. Mahta Moghaddam, Ming Hsieh Chair in Electrical and Computer Engineering and the director of the Microwave Systems, Sensors, and Imaging Laboratory (MiXIL) at the Viterbi School of Engineering, University of Southern California. Prof. Moghaddam was the 2020 president of the IEEE Antennas and Propagation Society, and was the

The COVID-19 pandemic also posed significant challenges for the higher education community worldwide, necessitating educators and students across all levels of education to adapt quickly to “online education” (for example, virtual courses/emergency remote learning), traditionally viewed as an alternative pathway and well suited mainly to adult learners seeking higher education opportunities. The post-COVID-19

Cross out, in the grid presented, all the words that appear in the list below—they may appear horizontally, vertically, or diagonally. The six remaining letters refer to a transfer agent or a directional geometrical entity.

Presents the front cover for this issue of the publication.

Presents the table of contents for this issue of the publication.

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

Reports on APS society chapter activities.

We introduce the concepts, methodologies, and applications of meteorological electromagnetics with a focus on snow, which currently is the least understood component of the global water cycle. As "no two snowflakes are alike," the intricacies of snowflakes and snowfall are both truly fascinating and extremely challenging to measure, analyze, and predict. We describe a unique approach to the characterization

The quantum framework of the time-dependent density functional theory (TDDFT) for analyzing nanostructured devices is reviewed, and alternative methods for incorporating induced electromagnetic fields into the theory are discussed. To capture the retardation effects in larger electronic structures, the TDDFT equations can be formulated by applying the Lorenz gauge-fixing condition to the induced scalar

Reports on upcoming APS society meetings and events.

It is well known that the maximum amount of power in an electrical or electronic system can be transferred to a load when its impedance is the complex conjugate of the source impedance, although, the power transfer efficiency is only 50%. Is this fact true for a radio system, as well? The question has existed for decades. In this article, the equivalent circuits of antenna systems are reexamined. It

In recent years, there has been great interest in millimeter-wave (mmwave) and terahertz (THz) technologies due to an increasing demand for ultrahigh data transfer rate. Two novel solutions, i.e., antenna on chip (AoC) and antenna in package (AiP), have been proposed for the development of highly integrated radio and radar systems [1]-[5]. To measure the antenna characteristics of AoC and AiP, a reliable

A novel and instructive antenna characterization setup design is introduced in this article. The setup is designed to reduce the cost to antenna characterization and proliferate the knowledge of antennas. The characterization setup introduced does not employ off-the-shelf antenna characterization equipment and software, instead it innovates a technique that can be replicated by students in a classroom

Origami electromagnetic (EM) structures are promising technologies for deployable and reconfigurable EM structures such as antennas and frequency-selective surfaces (FSSs). However, these structures present CAD modeling difficulties due to their complex geometries. Studying the effects of origami substrate folding on EM performance demands multiple CAD models at different fold angles. Also, optimization

The Arecibo Observatory first opened in 1963 and has been a marvel of engineering ever since (Figure 1). It has been a monumental instrument for scientific research in the fields of astronomy, planetary radar, ionospheric probing and high-frequency (HF) heating modification, and optical probing of the atmosphere.

The measurement of radar crosssection (RCS) became very important in the 1960s, and many RCS test ranges were designed and built between 1960 and 1995. These test ranges and their procedures for testing, calibration, and usage typically were different because they reflected the visions of the scientists and engineers who designed them. In fact, performing RCS measurements is oftentimes as much of an

Various puzzles, quizzes, games, humorous definitions, or mathematical that should engage the interest of readers.

Recounts the career and contributions of Gerald Burke.

Recounts the career and contributions of Gerald Burke.

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.

We present a succinct way to quantize Maxwell's equations. We begin by discussing the random nature of quantum observables. Then we present the quantum Maxwell's equations and give their physical meanings. Due to the mathematical homomorphism between the classical and quantum cases [1], the derivation of quantum Maxwell's equations can be simplified. First, one needs only to verify that the classical

The near-field coupling between closely placed metallic structures has been utilized to cope with the dilemma of a normal-mode helical antenna (NMHA) design. For small NMHAs, the impedance-matching difficulty is mitigated by designing appropriated coupling feeds, either electrically or magnetically. For long NMHAs, the radiation pattern distortion is rectified by dividing the complete helix into properly

Due to the need for very high data rates in 5G, terrestrial radio links at millimeter-wave frequencies (particularly in the E band) are of paramount importance for use in the network front-/backhauling. An accurate estimation of the probability of occurrence of fade duration may help operators in the assessment of radio link time outages. Furthermore, experimental data for relatively long periods of

We present a freely accessible graphical user interface (GUI) for analyzing antenna-fed quasi-optical (QO) systems in reception (Rx). This analysis is presented here for four widely used canonical QO components: parabolic reflectors and elliptical, extended hemispherical, and hyperbolic lenses. The employed methods are geometrical optics (GO) and Fourier optics (FO). Specifically, QO components are

This article focuses on the developments in electromagnetism during the early 19th century. The discovery of electromagnetism by Hans Christian Ørsted, in 1820, was a gamechanging event that opened perspectives into the deep understanding of physics and fundamental technical applications. In this article, the principles to measure and quantify electric current are given particular attention. Several

Biomedical imaging is a relevant noninvasive technique aimed at generating an image of the biological structure under analysis. The arising visual representation of the characteristics of the object is affected by both the measurement process and reconstruction algorithm. This procedure can be considered as a hybridization of data information, measurement physics, and prior information.

Presents the 2020 subject/author index for this publication.

Presents the front cover for this issue of the publication.

Presents the table of contents for this issue of the publication.

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

Presents the introductory editorial for this issue of the publication.

Presents the President’s message for this issue of the publication.

Presents information on various APS Society chapters.

Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.

Presents the APS society calendar of upcoming events and meetings.

Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.

Provides a notice of upcoming course events of interest to practitioners and researchers.

Wideband circularly polarized antennas with wide axial-ratio (AR) bandwidth and required gain are desired for point-to-multipoint communication and remote tracking applications. Two different designs of probe-fed rectangular curved slotted dielectric resonator antenna (SDRA) models are proposed in this article, one with an overall size of 50 ? 50 mm2 (SDRA-1) and the other a scaled-down version with

Reports on the legal issues involved with the rollout of 5G mobile communication networks in the United States.

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Antennas and propagation constitute one of the compulsory courses for students in the communication engineering program at many universities. At Universiti Malaysia Perlis (Uni-MAP), a new project-based learning (PBL) approach has been implemented in the teaching and lab instruction of this class. Besides imparting the latest antenna technology in the form of textile antennas to the students, this

The radio telescope at Parkes has been at the forefront of international research in radio astronomy since the early 1960s. It received a further accolade recently when it was honored by the award of an IEEE Milestone for its involvement in the first moon landing on 21 July 1969 (Sydney time).

Various puzzles, quizzes, games, humorous definitions, or mathematical that should engage the interest of readers.

Presents guidelines to various APS society awards.

There are many stimulating and rewarding career paths in antenna design. In this article, I want to highlight the one I am most familiar with, make an argument for why you might consider it, too, and provide some opinionated but tested advice for how to be successful in the field. I was fortunate enough to build and lead Apple’s antenna design team during a period of eight years. Starting with the

Presents corrections to the article, “A polarization basics diagram,” (Maybell, M.J.), IEEE Antennas Propag. Mag., vol. 61, no. 1, pp. 130–135, Feb. 2019. doi: 10.1109/MAP.2018.2883054.