ABSTRACT. Wireless devices such as mobile phones, tablets etc. have become part of our daily life. Emerging Technologies, 5G/6G, Autonomous Driving, automated delivery systems, smart homes, smart cities will revolutionize the way we live, work, and communicate soon. A key component in all these technologies is an antenna or multiple antennas that are used for transmitting and receiving signals. As a result, many products we use today and will be using soon, will need to incorporate antennas that are efficient and can fit within the space available in the device. Advances in simulation technology using computational electromagnetic tools have made possible antenna design and integration of antennas into various devices. In this paper, we will review advances in EM computational methods in the context of product design process in various industries.

ABSTRACT. This manuscript presents a brief overview of several 3D-printed dielectric resonator antennas (DRAs) designed to achieve circular polarization by leveraging features that additive manufacturing can readily and cost-effectively integrate into the design. Different techniques are explored, including the incorporation of parasitic elements into the DRA and modifications to the antenna geometry.

ABSTRACT. This paper outlines the synthesis procedure for filtering antennas (filtennas) using coupled-resonator theory for bandpass filter design. To demonstrate the design process, frequency-agile evanescent-mode cavity-based filtennas are synthesized for operation at S-band (2-2.6~GHz) and X-band (9.6-11.1~GHz). The impact of the frequency scalability on the tuning method and the performance of the filtenna is also discussed.

ABSTRACT. Electroencephalography (EEG) from scalp potentials is one of the primary non-invasive techniques to map and study brain electric activity. EEG imaging is a key technology for epilepsy diagnostics as well as for developing Mind-Machine Interfaces (MMIs or BCIs), which enable non-muscular communication by translating brain activity into computer commands.

This talk will present key advances in computationally empowered EEG-based neuroimaging. Theoretical foundations will be paired with impactful applications, illustrating how developments in computational electromagnetics have significantly influenced both diagnostic and therapeutic tools in brain imaging research and practice.

ABSTRACT. Automotive radar systems operating in the 77–79 GHz band are critical for advanced driver assistance systems (ADAS), enabling long-range detection for collision avoidance, adaptive cruise control, and highway driving. Designing antennas at these frequencies requires the integration of device, circuit, electromagnetic, and thermal simulations to ensure robust performance under real-world conditions. This paper presents a workflow for simulating an on-chip antenna embedded in SiO₂, highlighting the challenges of high-frequency operation, multipath interference, beamforming requirements, and thermal management. A waveguide horn antenna element within a 4×4 array (4Tx, 4Rx) is used to demonstrate beamforming and high-resolution sensing. The integrated modeling approach illustrates how multi-domain simulation can validate antenna radiation patterns, gain, and system reliability for ADAS radar applications., more reliable development of next generation wireless systems.

ABSTRACT. This paper presents integrated observations and characterizations of snowflakes and snowfall through a synergistic use of optical surface instrumentation for in-situ microphysical and geometrical measurements of ice particles, image processing methodologies, scattering computations, AI/machine learning, and polarimetric radars.

ABSTRACT. The Wiener–Hopf technique is a fundamental analytical and semi-analytical method in applied mathematics and mathematical physics for solving PDE and integral-equation boundary-value problems. Using spectral domain, it enables rigorous solutions and with the Fredholm factorization very accurate approximate solutions in computational physics and in particular in electromagnetics allowing efficient analysis of propagation, diffraction, guided-wave discontinuities, antenna radiation, and modern applications. Recent advances, as the introduction of the novel direct Fredholm factorization for arbitrary generalized Wiener Hopf equations, extend the method to more complex geometries and arbitrary media beyond rectangular, isotropic media, while preserving strong physical insight through spectral-domain interpretation. Wiener-Hopf formulations can be interpreted through equivalent networks to avoid redundancy for a practical and systematic application of the methodology.

ABSTRACT. The IEEE Antennas and Propagation Society (AP-S) Standards Committee (SC) plays a central role in developing, maintaining, and promoting technical standards that support antenna terminology measurements and propagation, modeling practices, and other related topics. This paper provides an overview of current AP-S standardization activities, covering the status of active and emerging projects, the evolution of community engagement strategies, and the operational challenges facing volunteer-driven standards development. Recent outreach efforts, collaboration with related societies and the committee’s recognition program are also discussed.

ABSTRACT. As a fabrication technique, additive manufacturing produces features that cannot be easily replicated using subtractive manufacturing techniques. By controlling the volumetric proportion of a high-permittivity material deposited in a filament layering process, a wide range of unique relative permittivity values can be realized in various regions of a single structure. This allows for complex dielectric antennas such as rods and leaky-wave antennas with inhomogeneous permittivity distribution to be produced with a single filament. Accurate design of these antennas requires accurate dielectric properties measurements. In this paper coaxial probe and waveguide material characterization techniques are compared for accuracy.

ABSTRACT. Solutions to electromagnetic scattering problems obtained with computational electromagnetic (CEM) numerical software need validations to verify their accuracy and comparisons with exact analytical solutions provide a way to perform validations. Among the known exact solutions, some of the newer ones involve different materials, sharp edges, and cavities, thus involving complications not previously found. This presentation focuses on raising awareness about existing exact solutions and, among them, those that are ready to use for comparisons.

ABSTRACT. This paper discusses some selected millimeter wave antenna research activities in the Antenna and Microwave Lab (AML) at San Diego State University over the last 10 years. These antennas operate at Ka-, V- and W-bands. The Ka-band antennas are multifunctional phased-array antennas using beamforming chips. The V-band antennas include the feedhorn development and the mechanically steered Risley-prism-based antennas. The W-band antennas are a feed and reflector antenna and a travelling wave array antenna. All these research activities include design, analysis, development and experimental verification of the prototype antennas. During the conference, examples of these antennas will be presented.

ABSTRACT. Although 6G is not only about higher data rates, its envisioned peak data rate of 1 terabits per second requires larger frequency bandwidth than what 5G millimeter wave bands offer. Therefore, new frequency bands have been allocated in the sub-THz range for 6G applications. This paper reviews the concept of distributed deployment to provide coverage in sub-THz bands, focusing on the design and implementation of low-cost antennas-in-package that enable the use case.

ABSTRACT. This article highlights a few challenges in new generation antenna design and how to overcome them by machine learning (ML) approach. It shares the achievements earned by the authors and collaborators in handling critical antenna problems in recent time. Two representative designs have been discussed where traditional analysis, simulation by commercial tools, and step-by-step conceptual optimization failed to produce the targeted output. That barrier was broken by using ML-based optimization, in particular, Parallel Surrogate-Assisted Differential Evolution Algorithm (PSADEA) which happens to be a very fast and efficient optimizer. The outcome ensures enormous potential of ML- based approach in solving complex antenna problems for the next generation wireless systems.

ABSTRACT. Stealth theory deals with invisibility of objects / targets based on electromagnetic (EM) understanding. This is especially critical in designing low-visible aircraft fighters and frigates in defense sector. This paper is about EM diffraction theory and invisibility of such targets. Time and frequency domain numerical simulations are used to show how invisible invisible-targets.

ABSTRACT. Accurate depth estimation remains a fundamental challenge for professional Augmented Reality (AR) applications on commodity smartphones. Most Android devices rely on camerabased depth inference techniques, which are sensitive to lighting, surface texture, and environmental structure. This paper presents a novel Artificial Intelligence (AI)–enabled low-cost, external LiDAR based Augmented Reality (AR) framework that enhances depth accuracy and measurement reliability on standard Android devices. A compact single-point LiDAR sensor is interfaced with a mobile AR application via Bluetooth Low Energy (BLE), allowing real-time fusion of high-precision distance measurements with ARCore-based six-degree-of-freedom (6-DoF) tracking. Each captured point is spatially anchored in the world coordinate frame and geotagged using onboard GPS/GNSS data. Experimental results demonstrate substantial gains in measurement accuracy, robustness, and effective range compared to ARCore-only approaches, enabling scalable indoor and outdoor 3D mapping using consumer smartphones.

ABSTRACT. This paper presents a novel reconfigurable intelligent surface (RIS) capable of dynamically manipulating both dual-linearly and dual-circularly polarized beams. The proposed RIS is composed of 144 periodically arranged unit cells. Each unit cell can reconfigure the polarization and phase of the reflected electromagnetic wave in real-time through the dynamic switching of integrated p-i-n diodes. The fabricated RIS prototype is measured. The results demonstrate its capability for quad-polarized beam manipulation, achieving a maximum aperture efficiency of 29.18%. Leveraging these advantages, the proposed RIS can serve as a core hardware component for satellites, 5G/6G base stations, and radars.

ABSTRACT. This work presents a novel four-element microstrip antenna array for small CubeSats, operating in the GNSS L1/E1 bands. The design achieves high radiation efficiency and good polarization purity while remaining structurally simple. Its key innovation lies in the use of parasitically coupled elements extended from the ground plane, which are designed to fold during launch and deploy in orbit.

ABSTRACT. CubeSats have democratized space applications, enabling diverse entities to pursue innovative missions, but their compact form imposes stringent design constraints, particularly for antennas. This paper presents a circularly polarized antenna design for CubeSats operating at 868 MHz. It is a high-gain patch antenna with a printed feed structure achieving 4.84 dBi gain and a 1.7 dB axial ratio. Simulated in CST Microwave Studio and adhering to CubeSat size constraints, these designs address trade-offs between gain and orientation independence, offering versatile solutions for reliable communication in small satellite missions.

ABSTRACT. The design of a Global Navigation Satellite System (GNSS) antenna covering all the frequency bands of the fully operational constellations is presented. The proposed design, based on a stacked patch architecture, includes a metal housing while remaining compact and low-profile. Simulation results confirm that the antenna achieves the desired polarization and good impedance matching across all GNSS frequency bands.

ABSTRACT. Circular polarization plays a key role in certain propagation scenarios. The well-known helix antenna can provide excellent circular polarization and medium gain when operating in axial-mode. To achieve higher gains, a very long helix is required, but it provides only a single circular polarization. A wideband, dual-circularly polarized medium-gain array of helices is presented and demonstrated via simulation. The design achieves a realized gain above 17.5 dB, with an aspect ratio below 1.8 dB across a 32% bandwidth.

ABSTRACT. This paper presents an analysis of a modified dielectric rod integrated into a commercial Low Noise Block (LNB) downconverter to achieve gain enhancement in the Ku-band. The proposed dielectric rod features a compact and customized geometry and excited by an LNB front-end supporting both vertical and horizontal polarizations. The proposed dielectric rod is manufactured using fused filament fabrication (FFF) with polylactic acid (PLA), considering an optimized infill density of 55%. The assessments include comparative analysis between simulation and measurements results, demonstrating good agreement and effective integration performance. The S11 values over the operation frequency range remain below -15 dB for both polarizations, and the maximum measured gain is 13.3 dBi. The results provide insight into the viability of additively manufactured dielectric rods as low-cost enhancements for satellite reception systems.