Gain enhancement of annular slot antennas

2001 ◽  
Vol 148 (2) ◽  
pp. 109 ◽  
Author(s):  
S. Noghanian ◽  
L. Shafai
Keyword(s):  
Slot Antennas ◽  
Annular Slot ◽  
Gain Enhancement

Circular Polarization and Polarization Reconfigurable Designs for Annular Slot Antennas

2012 ◽  
Vol 60 (12) ◽  
pp. 5998-6002 ◽  
Author(s):  
Jeen-Sheen Row ◽  
Wang-Lin Liu ◽  
Tsair-Rong Chen
Keyword(s):  
Circular Polarization ◽  
Slot Antennas ◽  
Annular Slot

Simple analysis of printed annular slot antennas

2007 ◽  
Vol 49 (10) ◽  
pp. 2350-2354 ◽  
Author(s):  
Andrzej A. Kucharski ◽  
Robert Borowiec
Keyword(s):  
Simple Analysis ◽  
Slot Antennas ◽  
Annular Slot

Design data for small annular slot antennas

1958 ◽  
Vol 6 (2) ◽  
pp. 210-211 ◽  
Author(s):  
W. Cumming ◽  
M. Cormier
Keyword(s):  
Slot Antennas ◽  
Design Data ◽  
Annular Slot

scholarly journals Air and Metal Vias Combined Metamaterial-Based Lens for Radiation Performance Enhancement of Short-Pulse Tapered Slot Antenna

Electronics ◽  
2021 ◽  
Vol 10 (22) ◽  
pp. 2845
Author(s):  
Yifan Yin ◽  
Qiuyi Zhang ◽  
Shunli Li
Keyword(s):  
Performance Enhancement ◽  
Short Pulse ◽  
Slot Antenna ◽  
Main Lobe ◽  
Wall Structure ◽  
High Fidelity ◽  
Cross Polarization ◽  
Frequency Range ◽  
Slot Antennas ◽  
Gain Enhancement

A post-wall-structured tapered slot antenna (PWTSA) loaded with an embedded metamaterial-based lens (metalens) is proposed and investigated for short-pulse applications. The proposed embedded metalens consists of not only a metallic delay lens, but also an airy acceleration region surrounding the lens, which is different from the conventional metalenses used in various tapered slot antennas and can exhibit a small equivalent permittivity. Therefore, the embedded metalens has a large usable range of permittivity and does not increase the size of the original prototype PWTSA. The post-wall structure and metalens of the proposed antenna can help it achieve a comprehensive and balanced performance, including a high fidelity, low cross-polarization, stable main-lobe direction and gain enhancement. The simulated and measured results show that without any increase in antenna size, the proposed antenna enhances the realized gain by 6.4 dB over the frequency range from 9 to 26 GHz and achieves a stable radiation with the offset of the main-lobe direction being confined to 2° up to 24.9 GHz. Furthermore, the cross-polarization levels are less than −20 dB and the fidelity is kept high for the short-pulse radiation with the frequency spectrum up to 30 GHz.

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