Results 161 to 170 of about 3,272 (195)

A 3-D Printed 140 GHz Multifocal Dielectric Transmitarray Antenna for 2-D Mechanical Beam Scanning

IEEE Antennas and Wireless Propagation Letters
In this letter, a 3-D printed multifocal all-dielectric transmitarray antenna (TAA) is proposed for 2-D beam scanning at 140 GHz. Taking advantage of the TAA element phase shifting by varying incident angles, the proposed TAA can meet the phase ...
Jiexin Lai, Xiaojing Lv, Yang Yang
semanticscholar   +1 more source

A Novel Procedure To Hybridize the Folded Transmitarray and Fabry–Perot Cavity With Low Antenna Profile and Flexible Design Frequency

IEEE Antennas and Wireless Propagation Letters
The previously reported procedure to hybridize the high-band folded transmitarray antenna (FTA) and the low-band Fabry-Perot-cavity-antenna (FPCA) adopts the λlow/2 FPCA as the basic antenna, and the FTA is then integrated with the FPCA.
Qiming Wang, Ari Sihvola, Jiaran Qi
semanticscholar   +1 more source

Spin-Decoupled Anisotropic Metasurfaces With Chirality-Assisted Amplitude Modulation for a Low-Sidelobe Dual-Circularly Polarized Transmitarray

IEEE Transactions on Antennas and Propagation
In this article, we propose an amplitude-modulated spin-decoupled anisotropic metasurface and its application to a dual-circularly polarized (dual-CP) transmitarray (TA) with suppressed sidelobe levels (SLLs).
Weixu Yang, Ke Chen, Junming Zhao, T. Jiang, Yijun Feng   +4 more
semanticscholar   +1 more source

Dual-Band Shared-Aperture Antenna Hybridizing Patch and Transmitarray With Large Frequency Ratio and Wideband Characteristics

IEEE Transactions on Antennas and Propagation
This article presents a novel microwave (MW)/millimeter-wave (MMW) dual-band shared-aperture antenna. The antenna operates as a patch antenna in the MW band (2.4 GHz) and as a transmitarray (TA) in the MMW band (60 GHz).
Z. Ma, Yi Tang, Q. Xue, Wenquan Che, Kai Xu Wang   +4 more
semanticscholar   +1 more source

Low-Profile Dual-Band Dual-Circularly-Polarized Antenna Hybridizing Folded Transmitarray and Multifeed Transmitarray

IEEE Antennas and Wireless Propagation Letters
In this letter, we propose a novel low-profile dual-band dual-circularly-polarized antenna with a compact structure. The proposed shared-aperture antenna hybridizes a folded transmitarray (TA) at the K band and a multifeed TA at the Ka band.
Yixin Tong, Wenquan Cao, Chuang Wang, X. Bo, Yusheng Yang, Zhen-Guo Liu   +5 more
semanticscholar   +1 more source

A 1-Bit Reconfigurable Transmitarray With Enhanced Cross-Polarization Discrimination

IEEE Antennas and Wireless Propagation Letters
A wideband 1-bit reconfigurable transmitarray (RTA) with low cross-polarization and 2-D beam-scanning capacity is proposed for X-band applications. Based on the patch antenna, an RTA element was designed with symmetrical on the top and bottom layers ...
Chenyang Meng, Chang Fang, Yin Li, Guangyin Feng, Baiyang Liu, Sai-Wai Wong, Hao Chen   +6 more
semanticscholar   +1 more source

An Optimized Phase-Controlled Metasurface-Based Low-Profile Folded Transmitarray (FTA) Antenna

IEEE Transactions on Antennas and Propagation
In this work, a low-profile wideband folded transmitarray (FTA) antenna has been reported in Ku-band. The proposed FTA has been designed by using phase-controlled 3-bit unit-cells (UCs) based subwavelength metasurface (MS) structure.
Sougata Chatterjee, Y. Gupta, A. Maulik, Somak Bhattacharyya   +3 more
semanticscholar   +1 more source

A Low-RCS and Low-Profile Circularly Polarized Double-Folded Transmitarray Based on Absorptive Frequency-Selective Polarization Converter

IEEE Antennas and Wireless Propagation Letters
In this letter, a low-profile circularly polarized double-folded transmitarray antenna (CP-DFTA) at Ka band with low radar cross-section (RCS) performance is proposed by introducing a novel absorptive frequency-selective polarization converter (AFSPC ...
Youhui Feng, Shengchi Zhu, Zongxin Wang, Hong Ma, Yang Cai, Zhenxin Cao   +5 more
semanticscholar   +1 more source

Design of a Dual-Band Shared-Aperture Antenna Combining Fabry–Perot Cavity and Folded Transmitarray for X- and Ka-Bands

IEEE Transactions on Antennas and Propagation
This work introduces a dual-band and high-gain shared-aperture antenna for X- and Ka-band applications. The antenna can produce two directive beam radiations realized by the proposed specific structure of combing a Fabry–Perot cavity antenna (FPCA) and a
Shuai Gao, Hang Wong
semanticscholar   +1 more source

Wideband OAM Vortex Beam Generation Through a Thin Transmitarray in the Ka-Band

IEEE Antennas and Wireless Propagation Letters
This letter proposes a thin transmitarray for generating wideband orbital angular momentum (OAM) vortex beams in the Ka-band. Our proposed element achieves a 360$^{\circ }$ transmission phase within a 3 dB transmission magnitude, with a total thickness ...
Muhammad Ishfaq, Xiuping Li, Zihang Qi, Wenyu Zhao, Abdul Aziz, Liangjie Qiu   +5 more
semanticscholar   +1 more source