Results 21 to 30 of about 1,081,164 (147)

Design of Single-Layer Broadband Omnidirectional Metasurface Antenna Under Single Mode Resonance

IEEE Transactions on Antennas and Propagation, 2021
A single-layer broadband vertically polarized (VP) omnidirectional metasurface antenna is proposed in this communication. To guide the optimization and design of the antenna, characteristic mode (CM) analysis (CMA) is performed to investigate the ...
Si-Hao Liu, De-Qiang Yang, Yong-Pin P. Chen, K. Sun, Xiao-Kun Zhang, Yong Xiang   +5 more
semanticscholar   +1 more source

Design and analysis of ultra-wideband antennas for transient field excitations [PDF]

Advances in Radio Science, 2016
This work addresses the design of two ultra-wideband antennas for the application of transient field measurements that are characterized by frequency spectra that typically range from a few MHz to several GHz.
M. Kotzev, M. Kreitlow, F. Gronwald
doaj   +1 more source

Broadband Antennas [PDF]

, 2018
This article shows the different types of broadband antennas, their main characteristics and disadvantages are also ...
Petrische, D., Ivanova, K.
core   +1 more source

An Unbalanced Sinuous Antenna for Near-Surface Polarimetric Ground-Penetrating Radar

IEEE Open Journal of Antennas and Propagation, 2020
Sinuous antennas are capable of producing ultra-wideband radiation with polarization diversity. This capability makes the sinuous antenna an attractive candidate for UWB polarimetric radar applications. Additionally, the ability of the sinuous antenna to
Dylan A. Crocker, Waymond R. Scott
doaj   +1 more source

Investigation of Flexible Textile Antennas and AMC Reflectors

International Journal of Antennas and Propagation, 2012
In this paper, two different methods for fabric characterization are presented: a single frequency method and a broadband method. Felt and denim fabrics are characterized, and patch antennas are designed using these substrates to test both methods ...
M. Mantash, A.-C. Tarot, S. Collardey, K. Mahdjoubi   +3 more
doaj   +1 more source

A circularly polarised multiple input multiple output antenna with single‐sense for sub‐6 GHz 5G applications

IET Microwaves, Antennas & Propagation, 2023
In this study, a compact wideband circularly polarised Multiple Input Multiple Output (MIMO) antenna with the two parasitic elements is proposed. The printed monopole antenna for wideband circular polarisation proposed in authors' previous study is used ...
Zin Mar Phyo, Takafumi Fujimoto, Chai‐Eu Gaun   +2 more
doaj   +1 more source

Linear and flat antenna arrays focused on a broadband signals in radio communications, microwave technologies and non-destructive testing

Физика волновых процессов и радиотехнические системы
Background. The main properties and characteristics of focused antenna systems using narrowband signals are known and generally coincide with the properties of broadband discrete antennas with a symmetric spectrum.
Denis A. Vedenkin
doaj   +1 more source

Adaptive frequency-domain equalization for single-carrier MIMO systems [PDF]

, 2004
Channel estimation and tracking pose real problems in wideband single-carrier wireless communication systems employing multiple transmit and receive antennas. An alternative to estimating the channel is to adaptively equalize the received symbols.
Coon, J, M. Beach, J. McGeehan, S. Armour, J. Coon, McGeehan, JP, Beach, MA, Armour, SMD   +7 more
core   +1 more source

An Improved Adaptive Frequency Sweep Strategies Based on Asymptotic Waveform Evaluation Technique for Broadband Antenna Simulation

International Journal of Antennas and Propagation
In this paper, we propose an improved adaptive frequency sweep strategy based on the asymptotic waveform evaluation (AWE) technique for simulating broadband antennas across a wide frequency range.
Zhijun Cai, Lingzhi Ren, Shuangbing Liu, Gen Wang, Peng Gao, Tianyuan Zhang, Yuanjie Fang, Haili Zhang   +7 more
doaj   +1 more source

Printed Quasi-Yagi Antennas Using Double Dipoles and Stub-Loaded Technique for Multi-Band and Broadband Applications

IEEE Access, 2018
Double dipoles on a single-layer substrate are utilized to construct a triple-mode printed quasi-Yagi antenna for the multi-band and broadband antenna applications.
Kai Da Xu, Daotong Li, Yanhui Liu, Qing Huo Liu   +3 more
doaj   +1 more source