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A circularly polarized leaky-wave antenna capable of frequency scanning is proposed in this paper. The main objective is to achieve high gain and polarization purity without the need for a complex feed network. The antenna consists of two…

Applied Physics · Physics 2020-07-21 Ali Mohammad Hakimi , Ali Keivaan , Homayoon Oraizi , Amrollah Amini

This study undertakes the theoretical design, CAD modeling, realization, and performance analysis of a microwave low-noise amplifier (LNA) which has been accurately developed for operation at 3.0 GHz (S-band). The objective of this research…

Other Computer Science · Computer Science 2014-10-20 Ardavan Rahimian , Davood Momeni Pakdehi

Directive optical leaky wave antennas (OLWAs) with tunable radiation pattern are promising integrated optical modulation and scanning devices. OLWAs fabricated using CMOS-compatible semiconductor planar waveguide technology have the…

The advancement of future large-scale wireless networks necessitates the development of cost-effective and scalable security solutions. Conventional cryptographic methods, due to their computational and key management complexity, are unable…

Signal Processing · Electrical Eng. & Systems 2023-08-15 Alireza Nooraiepour , Shaghayegh Vosoughitabar , Chung-Tse Michael Wu , Waheed U. Bajwa , Narayan B. Mandayam

Millimeter wave (mm-wave) communications is considered a promising technology for 5G networks. Exploiting beamforming gains with large-scale antenna arrays to combat the increased path loss at mm-wave bands is one of its defining features.…

Information Theory · Computer Science 2017-04-21 Xianghao Yu , Jun Zhang , Martin Haenggi , Khaled B. Letaief

Millimeter wave (mmW) communications at the 60 GHz unlicensed band is seen as a promising approach for boosting the capacity of wireless local area networks (WLANs). If properly integrated into legacy IEEE 802.11 standards, mmW…

Information Theory · Computer Science 2017-09-05 Omid Semiari , Walid Saad , Mehdi Bennis , Merouane Debbah

A new spin photonic topological insulator model with a 30-degree rhombic unit cell is presented and analyzed. Topological band gaps and the robustness against the defects are shown. The edge modes are studied via full-wave simulation of a…

Applied Physics · Physics 2023-03-28 Sayyed Ahmad Abtahi , Mohsen Maddahali , Ahmad Bakhtafrouz

Millimeter-wave (mmWave) communication systems rely on large-scale antenna arrays to combat large path-loss at mmWave band. Due to hardware characteristics and deployment environments, mmWave large-scale antenna systems are vulnerable to…

Systems and Control · Electrical Eng. & Systems 2021-03-15 Rui Sun , Weidong Wang , Li Chen , Guo Wei , Wenyi Zhang

Millimeter-wave (mmw) frequency bands, especially 60 GHz unlicensed band, are considered as a promising solution for gigabit short range wireless communication systems. IEEE standard 802.11ad, also known as WiGig, is standardized for the…

The paper includes two contributions. First, it proves that the series and shunt radiation components, corresponding to longitudinal and transversal electric fields, respectively, are always in phase quadrature in axially asymmetric…

Classical Physics · Physics 2014-04-08 Simon Otto , Zhichao Chen , Amar Al-Bassam , Andreas Rennings , Klaus Solbach , Christophe Caloz

A new X-band leaky-wave antenna has been developed using spin photonic topological insulators. This antenna features a hexagonal unit cell arranged in an armchair configuration. This arrangement provides advantages over the zigzag…

Applied Physics · Physics 2026-02-12 Sayyed Ahmad Abtahi , Mohsen Maddahali , Ahmad Bakhtafrouz

Millimeter-wave (MMW) imaging has a wide prospect in application of concealed weapons detection. We propose a circular-arc multiple-input multiple-output (MIMO) array scheme with uniformly spaced transmit and receive antennas along the…

Signal Processing · Electrical Eng. & Systems 2021-03-01 Shiyong Li , Shuoguang Wang , Guoqiang Zhao , Houjun Sun

A single layer broadband millimetre wave (mm-wave) array with circular polarisation is proposed for the fifth generation (5G) mm-wave communication applications. The antenna element is designed to integrate the matching circuit into a…

Signal Processing · Electrical Eng. & Systems 2018-09-24 Qian Xu , Yi Huang , Tian-Hong Loh , Manoj Stanley , Lei Xing , Min Wang , Hui Gan

Ultra-reliable and low-latency connectivity is required for real-time and latency-sensitive applications, like wireless augmented and virtual reality streaming. Millimeter-wave (mmW) networks have enabled extremely high data rates through…

Signal Processing · Electrical Eng. & Systems 2025-12-10 Benjamin W. Domae , Ibrahim Pehlivan , Danijela Cabric

In this paper, a wideband high-gain 2 ? 2-element subarray is presented for 60 GHz band applications. The antenna is fed with waveguide-fed cavity backed configuration and designed entirely via simple rectangular apertures. To improve…

Signal Processing · Electrical Eng. & Systems 2019-04-05 Saeideh Shad , Hani Mehrpouyan

There has been an increasing interest in the millimeter wave (mmW) frequency regime in the design of next-generation wireless systems. The focus of this work is on understanding mmW channel properties that have an important bearing on the…

Information Theory · Computer Science 2018-02-14 Vasanthan Raghavan , Andrzej Partyka , Lida Akhoondzadehasl , Ali Tassoudji , Ozge Koymen , John Sanelli

Future wireless communication systems will integrate both sub-6 GHz and millimeter wave (mmWave) frequency bands within multi-antenna architectures to meet the increasing demand for high data rates. In such multi-band systems, reliable…

Signal Processing · Electrical Eng. & Systems 2026-05-29 Faruk Pasic , Jure Soklič , Robert Langwieser , Stefan Schwarz , Christoph F. Mecklenbräuker

The key obstacle to achieving the full potential of the millimeter wave (mmWave) band has been the poor propagation characteristics of wireless signals in this band. One approach to overcome this issue is to use antennas that can support…

Signal Processing · Electrical Eng. & Systems 2017-10-25 Mojtaba Ahmadi Almasi , Hani Mehrpouyan , Vida Vakilian , Nader Behdad , Hamid Jafarkhani

The analysis of wireless communication channels at the mmWave, sub-THz and THz bands gives rise to difficulties in the construction of antenna arrays due to the small maximum inter-element spacing constraints at these frequencies. Arrays…

Signal Processing · Electrical Eng. & Systems 2024-03-27 Marc Miranda , Sebastian Semper , Michael Döbereiner , Reiner Thomä

Next generation communication and sensing require enabling technologies for miniaturized and efficient heterogeneous systems while integrating technologies ranging from silicon to compound semiconductors and from photonic chips to…

Signal Processing · Electrical Eng. & Systems 2024-07-17 Najme Ebrahimi