Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Switchable Bidirectional/Unidirectional LWA Array based on Half-Mode Substrate Integrated Waveguide
AU - Liao, Qingbi
AU - Wang, Lei
PY - 2020/7/1
Y1 - 2020/7/1
N2 - A novel leaky-wave antenna array with switchable radiation patterns is designed and manufactured at X-band based on a half-mode substrate integrated waveguide. It generates endfire and broadside radiation patterns in two orthogonal planes. The endfire radiation is bidirectional in the xz plane, and the broadside radiation is unidirectional in the yz plane. These two radiations can be controlled by triggering in-phase or out-of-phase port excitations. The excitations also enable the scanning beams to switch between xz and yz planes. A feeding network is designed with a 3 dB coupler and a phase tuner to generate the in-phase and out-of-phase excitations. In the feeding network, the phase difference is realized without using any phase shifter. The feeding network has two input ports, one for the in-phase excitation and one for the out-of-phase excitation. A prototype antenna was manufactured and tested to validate the concept.
AB - A novel leaky-wave antenna array with switchable radiation patterns is designed and manufactured at X-band based on a half-mode substrate integrated waveguide. It generates endfire and broadside radiation patterns in two orthogonal planes. The endfire radiation is bidirectional in the xz plane, and the broadside radiation is unidirectional in the yz plane. These two radiations can be controlled by triggering in-phase or out-of-phase port excitations. The excitations also enable the scanning beams to switch between xz and yz planes. A feeding network is designed with a 3 dB coupler and a phase tuner to generate the in-phase and out-of-phase excitations. In the feeding network, the phase difference is realized without using any phase shifter. The feeding network has two input ports, one for the in-phase excitation and one for the out-of-phase excitation. A prototype antenna was manufactured and tested to validate the concept.
U2 - 10.1109/LAWP.2020.2997866
DO - 10.1109/LAWP.2020.2997866
M3 - Journal article
VL - 19
SP - 1261
EP - 1265
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
SN - 1536-1225
IS - 7
ER -