Results 311 to 320 of about 1,112,681 (393)

MIMO Radar with Widely Separated Antennas

IEEE Signal Processing Magazine, 2008
A. Haimovich, Rick S. Blum, L. Cimini
semanticscholar   +3 more sources

Dual-Band Metasurface-Based Decoupling Method for Two Closely Packed Dual-Band Antennas

IEEE Transactions on Antennas and Propagation, 2020
In this communication, a metasurface-based decoupling method (MDM) is proposed to reduce the mutual couplings at two independent bands of two coupled multiple-input-multiple-output (MIMO) antennas.
Feng Liu, Jia-yin Guo, Lu-yu Zhao, Guan-long Huang, Yingsong Li, Yingzeng Yin   +5 more
semanticscholar   +1 more source

Microstrip antennas

Microstrip and Printed Antenna Design, 2019
Analysis of near field, calculation of radiation Patten Using tte method cf angula spectmn~ of plane waves, study of input impedance, gain, radiation efficiency as function of substrate tlickness and strig widths of microstrip antennas excited at TML ...
H. How, Carmine Vittoria
semanticscholar   +1 more source

An overview of terahertz antennas

China Communications, 2020
The terahertz (THz) antennas, which have features of small size, wide frequency bandwidth and high data rate, are important devices for transmitting and receiving THz electromagnetic waves in the emerging THz systems. However, most of THz antennas suffer
Yejun He, Yaling Chen, Long Zhang, Sai‐Wai Wong, Zhi Ning Chen   +4 more
semanticscholar   +1 more source

Antennas

Electrical Engineering Handbook, 2018
In this course we want to develop equations and techniques for finding antenna radiation and gain patterns. That is, we want to develop equations for   , G   where  and  are orthogonal angles such as azimuth (AZ) and elevation (EL) or angles ...
J. Leech
semanticscholar   +1 more source

Weak-Field-Based Self-Decoupling Patch Antennas

IEEE Transactions on Antennas and Propagation, 2020
In this article, a new self-decoupling method, namely weak-field-based decoupling technique, is proposed and validated based on inset-fed patch antenna arrays.
Huawei Lin, Quangang Chen, Yuan Ji, Xujun Yang, Jianpeng Wang, Lei Ge   +5 more
semanticscholar   +1 more source

Decoupling and Low-Profile Design of Dual-Band Dual-Polarized Base Station Antennas Using Frequency-Selective Surface

IEEE Transactions on Antennas and Propagation, 2019
A dual-band dual-polarized base station antenna array is developed for fifth generation (5G) applications. Low-profile characteristic, high isolations, and shared-aperture are realized by introducing a frequency-selective surface (FSS) between radiators ...
Yufeng Zhu, Yikai Chen, Shiwen Yang
semanticscholar   +1 more source

Metasurface Antennas

2017
This chapter reports design and analysis methods for planar antennas based on modulated metasurfaces (MTSs). These antennas transform a surface wave (SW) into a leaky wave by means of the interaction with a MTS having a spatially modulated equivalent impedance.
Minatti, Gabriele, Faenzi, Marco, Mencagli, Mario, Caminita, Francesco, González Ovejero, David, Giovampaola, Cristian Della, BENINI, ALICE, Martini, Enrica, Sabbadini, Marco, Maci, Stefano   +9 more
openaire   +3 more sources

Optical Antenna Gain 2: Receiving Antennas

Applied Optics, 1974
Expressions are derived for the gain of a centrally obscured, circular optical antenna when used as the collecting and focusing optics in a laser receiver which include losses due to (1) blockage of the incoming light by the central obscuration, (2) the spillover of energy at the detector, and (3) the effect of local oscillator distribution in the case
J J, Degnan, B J, Klein
openaire   +2 more sources

Optical Antenna Gain 1: Transmitting Antennas

Applied Optics, 1974
The gain of centrally obscured optical transmitting antennas is analyzed in detail. The calculations, resulting in near- and far-field antenna gain patterns, assume a circular antenna illuminated by a laser operating in the TEM(00) mode. A simple polynomial equation is derived for matching the incident source distribution to a general antenna ...
B J, Klein, J J, Degnan
openaire   +2 more sources