A Switchable Matching Circuit for Compact Wideband Antenna Designs

被引：36

作者：

Li, Yue ^{[1
]}

Zhang, Zhijun ^{[1
]}

Chen, Wenhua ^{[1
]}

Feng, Zhenghe ^{[1
]}

Iskander, Magdy F. ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, State Key Lab Microwave & Digital Commun, Beijing 100084, Peoples R China

[2] Univ Hawaii Manoa, HCAC, Honolulu, HI 96822 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2010年 / 58卷 / 11期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

Iterative gradient searching; PIN diode; switchable matching circuits; wideband matching;

D O I：

10.1109/TAP.2010.2071345

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 novel compact wideband antenna, which adopts a multi-state switchable matching circuit, is proposed in this paper. The design of the switchable matching is systematically studied and a two-step iterative procedure is used to obtain optimized values for both the bandwidth division between the various stages and the matching circuit components in each stage. Without loss of generality, a meander line monopole, with dimensions of 80 x 10 x 10, is used as the radiator in the proposed wideband antenna design. To validate the proposed new design, a four-state matching circuit controlled by four PIN diodes is fabricated and measured. The reflection coefficient of the prototype antenna is found to be better than -7.3 dB, and the peak gain is higher than -3 dBi across the 470-770 MHz bandwidth for the Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) application.

引用

页码：3450 / 3457

页数：8

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