Design of a high-gain ultra-wideband slot antenna using frequency selective surface

2014 ◽  
Vol 56 (6) ◽  
pp. 1498-1502 ◽  
Author(s):  
Nagendra Kushwaha ◽  
Raj Kumar ◽  
Tuhina Oli
Keyword(s):  
Frequency Selective Surface ◽  
High Gain ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Frequency Selective

A low RCS wideband high gain CP slot antenna loaded with frequency selective surface

2020 ◽  
Vol 34 (7) ◽  
pp. 940-959
Author(s):  
Hridesh Kumar Verma ◽  
Mithilesh Kumar ◽  
R. S. Meena ◽  
Satya P. Singh
Keyword(s):  
Frequency Selective Surface ◽  
High Gain ◽  
Slot Antenna ◽  
Frequency Selective

Design of asymmetrically slotted hexagonal patch antenna for high-gain UWB applications

2014 ◽  
Vol 7 (5) ◽  
pp. 571-577
Author(s):  
Raghupatruni Venkat Siva Ram Krishna ◽  
Raj Kumar ◽  
Nagendra Kushwaha
Keyword(s):  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Ground Plane ◽  
Frequency Selective Surface ◽  
High Gain ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Capacitive Reactance ◽  
Uwb Applications

A compact slot antenna for high-gain ultra wideband applications is presented. The slot is asymmetrically cut in the ground plane and is a combination of two rectangles. A hexagonal patch with two stepped coplanar waveguide-feed is used to excite the slot. The capacitive reactance of the hexagonal patch is neutralized by the inductive reactance created by the asymmetric slot and results into wider impedance matching. The measured impedance bandwidth of the proposed antenna is 11.85 GHz (2.9–14.75 GHz). The radiation patterns of the proposed antenna are found to be omni-directional in the H-plane and bi-directional in the E-plane. To enhance the gain of the antenna, a compact three-layer frequency selective surface (FSS) is used as a reflector. The overall thickness of the FSS is 3.5 mm. There is 4–5 dBi improvement in antenna gain after application of the FSS. The measured and simulated results are in good agreement.

Ultra-wideband and low-loss linear-to-circular polarizer based on multilayer frequency selective surface

2021 ◽  
Vol 127 (2) ◽  
Author(s):  
Ping Wang ◽  
Yu Wang ◽  
Yanwen Hu ◽  
Hongcheng Zhou ◽  
Zhongming Yan ◽  
...  
Keyword(s):  
Frequency Selective Surface ◽  
Ultra Wideband ◽  
Low Loss ◽  
Circular Polarizer ◽  
Frequency Selective
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