Compact Ka-band Frequency Selector Base on Waveguide Slot Antenna and Luneburg Lens

2021 ◽  
Author(s):  
Jiayi Zhao ◽  
Zhipeng Liu ◽  
Yong Liu ◽  
Hongda Lu ◽  
Jialin Fan ◽  
...  
Keyword(s):  
Slot Antenna ◽  
Band Frequency ◽  
Ka Band ◽  
Waveguide Slot ◽  
Luneburg Lens ◽  
Waveguide Slot Antenna ◽  
Frequency Selector

scholarly journals A Ka-Band Circular Polarized Waveguide Slot Antenna with a Cross Iris

2020 ◽  
Vol 10 (19) ◽  
pp. 6994
Author(s):  
Sung-Joon Yoon ◽  
Jae-Hoon Choi
Keyword(s):  
Reflection Coefficient ◽  
Impedance Matching ◽  
Axial Ratio ◽  
Experimental Results ◽  
Slot Antenna ◽  
Ka Band ◽  
Circularly Polarized ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna

A Ka-band circularly polarized (CP) waveguide slot antenna with a cross iris is proposed. To achieve the CP characteristic (LHCP) in the antenna, a hexagonal shaped cavity is used. The impedance matching is improved by adjusting the sizes of the hexagonal cavity and a rectangular matching cavity. To enhance the axial ratio bandwidth, a cross iris is used with two arms of different lengths. From experimental results, the proposed antenna has a 3 dB axial ratio bandwidth of 6810 MHz (31.72 GHz–38.53 GHz). The −10 dB reflection coefficient bandwidth of the proposed antenna ranges from 31.51 GHz to 39.21 GHz (7700 MHz).

Broadband RCS reduction and high gain waveguide slot antenna with orthogonal array of polarisation‐dependent AMC

2013 ◽  
Vol 49 (21) ◽  
pp. 1312-1313 ◽  
Author(s):  
Yi Zhao ◽  
Xiang‐yu Cao ◽  
Jun Gao ◽  
Wen‐qiang Li
Keyword(s):  
Orthogonal Array ◽  
High Gain ◽  
Slot Antenna ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna

scholarly journals Ultra-Broad Band Radar Cross Section Reduction of Waveguide Slot Antenna with Metamaterials

2016 ◽  
Vol 25 (2) ◽  
pp. 241-246 ◽  
Author(s):  
Qiang Fu ◽  
Cheng-Li Fan ◽  
Si-Jia Li ◽  
Gang Wang ◽  
Xiang-Yu Cao
Keyword(s):  
Cross Section ◽  
Broad Band ◽  
Radar Cross Section ◽  
Slot Antenna ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna

Compact ridge waveguide slot antenna array fed by convex waveguide divider

2005 ◽  
Vol 41 (21) ◽  
pp. 1151 ◽  
Author(s):  
S.-S. Zhong ◽  
W. Wang ◽  
X.-L. Liang
Keyword(s):  
Antenna Array ◽  
Ridge Waveguide ◽  
Slot Antenna ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna
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