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- Title
A novel dual‐mode patch antenna with pattern diversity and beam‐tilting for aircraft applications.
- Authors
Yan, Yang‐Dong; Jiao, Yong‐Chang; Zhang, Chi
- Abstract
A dual‐mode patch antenna with pattern diversity that is beam‐tilted in a specific direction is presented. By placing a rectangular metal cavity below the circular patch and simultaneously shorting one end of the patch, the antenna produces tilted beams for dual‐mode radiation patterns. One pattern is excited using a proximity‐fed L‐shaped probe that generates a beam with a tilt angle of 25° from the broadside direction. The second pattern is excited using a coplanar waveguide (CPW)‐based feeding network that generates two beams with a tilt angle of θmax = ±45° in the directions of ϕmax = 70° and − 70°. The tilt angle can be varied by adjusting the metal cavity's length. A prototype antenna for operation at 2.38 GHz was fabricated and measured. The results indicate that the overlapped bandwidth (|S11| < −10 dB) for the two patterns is 330 MHz (2.22‐2.55 GHz). The measured peak gains for the two patterns are 6.74‐6.94 dBi and 5.82‐6.74 dBi, respectively. The isolation between the two ports is 18 dB.
- Subjects
ANTENNA radiation patterns
- Publication
International Journal of RF & Microwave Computer-Aided Engineering, 2020, Vol 30, Issue 4, p1
- ISSN
1096-4290
- Publication type
Article
- DOI
10.1002/mmce.22136