Bandwidth-Enhanced Low-Profile Cavity-Backed Slot Antenna by Using Hybrid SIW Cavity Modes

被引：244

作者：

Luo, Guo Qing ^{[1
]}

Hu, Zhi Fang ^{[2
]}

Li, Wen Jun ^{[1
]}

Zhang, Xiao Hong ^{[1
]}

Sun, Ling Ling ^{[1
]}

Zheng, Jian Feng ^{[3
]}

机构：

[1] Hangzhou Dianzi Univ, Key Lab RF Circuits & Syst, Minist Educ, Microelect CAD Ctr, Hangzhou 310018, Peoples R China

[2] Zhejiang Univ, Dept Opt Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

[3] Tsinghua Univ, State Key Lab Microwave & Digital Commun, Beijing 100084, Peoples R China

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2012年 / 60卷 / 04期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

Bandwidth enhanced; cavity-backed slot antenna; hybrid modes; substrate integrated waveguide (SIW); WAVE-GUIDE CAVITY; KA-BAND; RESONATOR;

D O I：

10.1109/TAP.2012.2186226

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A bandwidth enhanced method of a low-profile substrate integrated waveguide (SIW) cavity-backed slot antenna is presented in this paper. Bandwidth enhancement is achieved by simultaneously exciting two hybrid modes in the SIW-backed cavity and merging them within the required frequency range. These two hybrid modes, whose dominant fields are located in different half parts of the SIW cavity, are two different combinations of the TE110 and TE120 resonances. This design method has been validated by experiments. Compared with those of a previously presented SIW cavity-backed slot antenna, fractional impedance bandwidth of the proposed antenna is enhanced from 1.4% to 6.3%, its gain and radiation efficiency are also slightly improved to 6.0 dBi and 90%, and its SIW cavity size is reduced about 30%. The proposed antenna exhibits low cross polarization level and high front to back ratio. It still retains advantages of low-profile, low fabrication cost, and easy integration with planar circuits.

引用

页码：1698 / 1704

页数：7

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