A conformal cavity-backed supergain slot antenna

• Main Authors: Chen, Zhuozhu, Shen, Zhongxiang
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
• Online Access: https://hdl.handle.net/10356/103457; http://hdl.handle.net/10220/24498
• Institution: Nanyang Technological University

A conformal supergain slot antenna is presented in this paper, which comprises a thin substrate on the top broad wall of a shallow metallic cavity. Three slots with different lengths are etched out at suitable positions of the cavity wall to enhance the bandwidth as well as to achieve the supergain. A large ground is employed to obtain the near-end-fire radiation pattern. The proposed conformal antenna operates at the center frequency of 10 GHz. Simulated results show that a fractional bandwidth of 15% and maximum gain of 9.1 dB can be obtained for the three-slot conformal structure, the maximum radiation pattern tilts from the end-fire direction. A prototype of the proposed antenna is fabricated and tested. Measured results are in good agreement with simulated ones.