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A high-gain slot-coupled circular patch antenna with a surface-mounted conical horn for millimeter-wave (MMW) applications at 31 GHz is proposed. The design adopts microstrip/conical horn hybrid technology for a 6-dB enhancement over the conventional circular patch antenna. The overall antenna gain is about 12 dB, which makes it suitable for MMW imaging applications and short-range communications. A slot feeding mechanism is used for exciting the microstrip patch dominant mode TM010. The proposed design has been verified by simulations and finally confirmed by measurements.
Antennas and Wireless Propagation Letters, IEEE (Volume:11 )
Date of Publication: 2012