Open-Stopband Suppression and Cross-Polarization Reduction of a Substrate Integrated Waveguide Leaky-Wave Antenna

2019 ◽  
Author(s):  
Debabrata K. Karmokar ◽  
Shu-Lin Chen ◽  
Pei-Yuan Qin ◽  
Y. Jay Guo
Keyword(s):  
Substrate Integrated Waveguide ◽  
Cross Polarization ◽  
Leaky Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna

Substrate Integrated Waveguide-Based Periodic Backward-to-Forward Scanning Leaky-Wave Antenna With Low Cross-Polarization

2018 ◽  
Vol 66 (8) ◽  
pp. 3846-3856 ◽  
Author(s):  
Debabrata K. Karmokar ◽  
Y. Jay Guo ◽  
Pei-Yuan Qin ◽  
Shu-Lin Chen ◽  
Trevor S. Bird
Keyword(s):  
Substrate Integrated Waveguide ◽  
Cross Polarization ◽  
Leaky Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna

Half mode substrate integrated waveguide based leaky wave antenna with low cross polarisation

Frequenz ◽  
2020 ◽  
Vol 74 (7-8) ◽  
pp. 239-245
Author(s):  
Pravesh Belwal ◽  
Rahul Agrawal ◽  
Suresh Chandra Gupta
Keyword(s):  
Longitudinal Axis ◽  
Forward Direction ◽  
Main Beam ◽  
Substrate Integrated Waveguide ◽  
Cross Polarization ◽  
Leaky Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
The Cross ◽  
Polarization Level

AbstractA half mode substrate integrated waveguide (HMSIW) based leaky wave antenna (LWA) featuring low cross-polarization is proposed in this paper. The umbrella-shaped slot (the combination of longitudinal and transverse slots) is etched on the top layer of HMSIW LWA to get the efficient broadside radiation. The scanning range is obtained from −47° to +30° in a frequency range of 8.3 to 15.1 GHz. The cross-polarization level for the LWA is around −10 dB at broadside. In order to improve the cross-polarization levels in HMSIW LWA, two antennas are placed face to face obtaining the balanced symmetry across the longitudinal axis. Both the simulated and measured results show that the antenna is able to scan continuously from backward to forward direction with a very good low cross-polarization level. The developed prototype is capable of continuous beam scan from −29° to +32° in an operating frequency band of 9.2 to 15 GHz with a maximum gain of 13.5 dBi. The measured cross-polarization level is −30 dB which is quite low for the main beam at the broadside direction.

scholarly journals Increasing radiation power in half width microstrip leaky wave antenna by using slots technique

2022 ◽  
Vol 12 (1) ◽  
pp. 392
Author(s):  
Muhannad Kaml Abdulhameed ◽  
Sarah Rafil Hashim ◽  
Noor Kamil Abdalhameed ◽  
Ahmed Jamal Abdullah Al-Gburi
Keyword(s):  
Radiation Power ◽  
Half Width ◽  
Main Beam ◽  
Substrate Integrated Waveguide ◽  
Cross Polarization ◽  
Leaky Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Aerial Vehicle ◽  
Power Radiation

<p class="Default">The radiation power in the endfire is decreased while the main beam of half substrate integrated waveguide scan from broadside to endfire in a forward. The design of half-width microstrip leaky-wave antenna (HW-MLWA) has been presented in this work to increase the power radiation near endfire by using the slots technique in the radiation element. This slot leads to a decrease the cross-polarization. The proposed design comprises one element of HW-MLWA with repeated meandered square slots in the radiation element. One aspect of this antenna is generated by using a half substrate integrated waveguide with a full tapered feed line. The proposed antenna was terminated by load of 50 Ω, and feed on the other end of the antenna. Finally, the suggested design is simulated and acceptable results were found. The released gain is increased from 10.6 dBi to 12 dBi at 4.3 GHz. This design is suitable for unmanned aerial vehicle UAVs at C band application.</p>

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