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Broadband and high gain waveguide‐fed slot antenna array in the Ku‐band
- Source :
- IET Microwaves, Antennas & Propagation. 8:1041-1046
- Publication Year :
- 2014
- Publisher :
- Institution of Engineering and Technology (IET), 2014.
-
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.
Details
- ISSN :
- 17518733
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- IET Microwaves, Antennas & Propagation
- Accession number :
- edsair.doi...........744b5ab4a1b1d50cd5b9e8a961ad85a3