Wideband substrate integrated waveguide cavity-backed spiral-shaped patch antenna
详细信息 查看全文
- 作者：Longsheng Liu ; Han Wang ; Zhijun Zhang ; Yue Li and Zhenghe Feng
- 关键词：substrate integrated waveguide ; spiral-shaped patch ; wideband ; dual-resonance
- 刊名：Microwave and Optical Technology Letters
- 出版年：2015
- 出版时间：February 2015
- 年：2015
- 卷：57
- 期：2
- 页码：332-337
- 全文大小：1092K
- ISSN：1098-2760
文摘
A new technique for designing wideband substrate integrated waveguide (SIW) cavity-backed antenna is presented in this article. The antenna element is composed of a spiral-shaped patch and an SIW cavity fed by a coaxial probe. It takes advantage of a dual-resonance observed in the proposed spiral-shaped patch structure to enhance its bandwidth. A 2 × 1 array is designed to increase the antenna gain. To demonstrate the validity of the bandwidth enhancement technique, prototypes of the proposed antenna element and array for X-band applications are fabricated and measured. The measure 10-dB return loss bandwidth of the antenna element is 11.2% (10.306–11.531 GHz) while that of the array is 12.5% (10.292–11.66 GHz).