New design of SIW leaky wave antenna based on a T-shaped slot with controllable scanning rate from backward to forward direction

2015 ◽  
Author(s):  
Noumi Rihem ◽  
Latrach Lassaad ◽  
Hrizi Hanen ◽  
Gharsallah Ali
Keyword(s):  
Forward Direction ◽  
Leaky Wave ◽  
Scanning Rate ◽  
Leaky Wave Antenna ◽  
Wave Antenna

scholarly journals A Leaky Wave Antenna Design Based on Half-mode Substrate Integrated Waveguide Technology for X Band Applications

2017 ◽  
Vol 7 (6) ◽  
pp. 3467
Author(s):  
S. Doucha ◽  
M. Abri ◽  
H. Abri Badaoui ◽  
B. Fellah
Keyword(s):  
Forward Direction ◽  
Slot Antenna ◽  
Main Beam ◽  
Substrate Integrated Waveguide ◽  
Leaky Wave ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
X Band ◽  
New Type ◽  
Base Structure

A new type of leaky-wave antenna (LWA) using half-mode substrate integrated waveguide (HMSIW) as the base structure is proposed in this paper. The structure consists of an array of slot, antenna designed to operate in X band applications from 8 to 12 GHz. HMSIW preserves nearly all the advantages of SIW whereas its size is nearly reduced by half. The antenna radiates one main beam that can be steered from the backward to the forward direction by changing frequency.

High Scanning-Rate Leaky-Wave Antenna Using Complementary Microstrip-Slot Stubs

2019 ◽  
Vol 67 (5) ◽  
pp. 2913-2922 ◽  
Author(s):  
Ge Zhang ◽  
Qingfeng Zhang ◽  
Shangkun Ge ◽  
Yifan Chen ◽  
Ross D. Murch
Keyword(s):  
Leaky Wave ◽  
Scanning Rate ◽  
Leaky Wave Antenna ◽  
Wave Antenna

Linearly Sweeping Leaky-Wave Antenna with High Scanning Rate

2020 ◽  
pp. 1-1
Author(s):  
Jianfeng Chen ◽  
Wei Yuan ◽  
Wen Xuan Tang ◽  
Lei Wang ◽  
Qiang Cheng ◽  
...  
Keyword(s):  
Leaky Wave ◽  
Scanning Rate ◽  
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.

Scanning rate enhancement in substrate integrated waveguide periodic leaky wave antenna with continuous beam scanning using delay lines

Frequenz ◽  
2020 ◽  
Vol 74 (11-12) ◽  
pp. 377-382
Author(s):  
Dhruv Chaudhary ◽  
Rahul Agrawal ◽  
Suresh C. Gupta
Keyword(s):  
Delay Line ◽  
Group Delay ◽  
Substrate Integrated Waveguide ◽  
Continuous Beam ◽  
Leaky Wave ◽  
Beam Scanning ◽  
Scanning Rate ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Relative Bandwidth

AbstractIn this paper, the scanning rate (SR) is enhanced for substrate integrated waveguide (SIW) based periodic leaky wave antenna (LWA) with continuous beam scanning. Delay line is inserted in the SIW based periodic LWA to modify the group delay profile which in turn increase the SR of the SIW based periodic LWA. Addition of the delay line enhances the SR of the SIW LWA to approximately three times from 15.6° to 47° per GHz. The prototype of the proposed LWA is fabricated and experimentally measured. The simulated and measured results show that the proposed LWA scans the angular range from −30° to +27° within a frequency span of only 1.2 GHz from 14.8 to 16 GHz (relative bandwidth of 7.7 %).

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