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High-Efficient Patch Antenna Array for E-Band Gigabyte Point-to-Point Wireless Services

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2 Author(s)
Nasser Ghassemi ; Poly-Grames Research Center and Center for Radiofrequency Electronics Research of Quebec (CREER), Department of Electrical Engineering, Ecole Polytechnique (University of Montreal), Montreal, Canada ; Ke Wu

This letter presents a low-cost, high-gain, and high-efficiency 4 × 4 circular patch array antenna for gigabyte point-to-point wireless services at E-band (81-86 GHz). The antenna structure consists of two layers. The feed network is placed at the bottom layer, while the circular patches are on the top layer. To increase the efficiency of the antenna array, substrate integrated waveguide (SIW) is used to feed the circular patches through longitudinal slots etched on the top metallic surface. Low-cost printed circuit board (PCB) process is used to fabricate the antenna prototype. Simulated and measured bandwidths of the antenna array are 7.2%, which covers the desired frequency range of 81-86 GHz. Measured gain of the 4 × 4 antenna array is 18.5 dBi, which is almost constant within the antenna bandwidth. Measured radiation efficiency of 90.3% is obtained.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:11 )