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- Title
Broadband and high gain waveguide-fed slot antenna array in the Ku-band.
- Authors
Guan-Long, Huang; Zhou Shi-Gang; Tan-Huat, Chio; Tat-Soon, Yeo
- Abstract
A broadband and high-gain slot antenna array operating in the Ku-band is reported in this study. The antenna is with waveguide-fed cavity backed configuration and made entirely via simple milling process. The overall antenna structure consists of four layers. The bottom layer is a waveguide feed network to provide corporate power division. In turn, the waveguide feed network is excited by a conventional coaxial probe from the back. The waveguide network couples energy to an array of cavity via an aperture plate. These constitute the middle two layers. Each cavity then excites a subarray of 2 × 2 radiating slots in the top layer. The radiating slot elements and the feed network are designed to achieve wide bandwidth and high-gain performance. Finally, an 8 × 8 array antenna has been designed and fabricated with about 25 dBi gain over 14.8% bandwidth, and the cross-polarisation was around -30 dB in the boresight.
- Subjects
SLOT antenna arrays; WAVEGUIDE antennas; SLOT antennas; BROADBAND antennas; WAVEGUIDES
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2014, Vol 8, Issue 13, p1041
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/iet-map.2013.0702