A 42-GHz Wideband Cavity-Backed Slot Antenna with Thick Ground Plane

ETRI Journal

关键词: Thick ground plane;    microstrip antenna;    wideband;    slot antenna;   

Others  :  1185155
DOI  :  10.4218/etrij.04.0203.0021

【 摘 要 】

We investigate the characteristics of a wideband and high-gain cavity-backed slot antenna in terms of the reflection coefficients, radiation patterns, and gain. A cavity-backed slot antenna structure includes baffles, reflectors, and thick ground planes. The measured gain and bandwidth of a 10-dB return loss in a cavity-backed 2×2 array slot antenna with h₁=2 mm, d=2 mm are 15.5 dBi and nearly 27%, respectively, at 42 GHz. Baffles and reflectors are used to increase antenna gain, thus reducing the coupling among the slots on the thick ground plane.

   

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