Making UWB Antennas Unidirectional: Phase Coherence with an Ultra-Wide Band Frequency Selective Surface Reflector

2017 ◽  
pp. 227-258
Author(s):  
Yogesh Ranga ◽  
Karu P. Esselle ◽  
Ladislau Matekovits
Keyword(s):  
Wide Band ◽  
Frequency Selective Surface ◽  
Phase Coherence ◽  
Ultra Wide Band ◽  
Band Frequency ◽  
Uwb Antennas ◽  
Frequency Selective

Compact Ultra-Wide Band Frequency Selective Surface With High Selectivity

2020 ◽  
Vol 68 (7) ◽  
pp. 5724-5729 ◽  
Author(s):  
Tao Hong ◽  
Mengdan Wang ◽  
Ke Peng ◽  
Qiang Zhao ◽  
Shuxi Gong
Keyword(s):  
High Selectivity ◽  
Wide Band ◽  
Frequency Selective Surface ◽  
Ultra Wide Band ◽  
Band Frequency ◽  
Frequency Selective

scholarly journals Three Different Compact Elliptical Slot Ultra -Wide band Antennas for Wireless Communication Applications

2021 ◽  
pp. 52-59
Author(s):  
K. S Chakradhar ◽  
◽  
V. Malleswara Rao
Keyword(s):  
Frequency Band ◽  
Return Loss ◽  
Wide Band ◽  
Circular Ring ◽  
Ultra Wide Band ◽  
Impedance Bandwidth ◽  
Band Frequency ◽  
Uwb Antennas ◽  
Elliptical Ring ◽  
Pcb Design

From this current paper, 3 separate elliptical slotted ultra- wide band (UWB) antennas are being proposed. These antennas have been designed with a standard PCB design process to be capable of integrating with radiofrequency or microwave circuitry. Two designs were presented in which the initial design comprised a half circular ring radiator and the remaining one considers a half elliptical ring radiator. The third design of the radiator is in the shape of a crescent. The impedance bandwidth of all these presented antenna designs varies from 2.5GHz and reaches to 14GHz with a S11 less than -10GHz. Here, every proposed antenna design also has a consistent radiation pattern across its frequency band of interest. The performance of the antenna is impressive for lower band frequency in UWB system, which differs in a range of 3.1GHz to 5.1GHz. Across the whole frequency band the antenna shows a 10db return loss bandwidth. The antenna is fabricated on RT-duroid substrate and fed with 50 Ω coupled tappered transmission line.

Wide band frequency selective surface for angular and polarization independent operation

2014 ◽  
Vol 57 (1) ◽  
pp. 216-219 ◽  
Author(s):  
F. C. G. da Silva Segundo ◽  
A. L. P. S. Campos ◽  
E. C. Braz
Keyword(s):  
Wide Band ◽  
Frequency Selective Surface ◽  
Band Frequency ◽  
Frequency Selective ◽  
Polarization Independent
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