A Microstrip Patch Electronically Steerable Parasitic Array Radiator (ESPAR) Antenna With Reactance-Tuned Coupling and Maintained Resonance

被引：59

作者：

Luther, Justin J. ^{[1
]}

Ebadi, Siamak ^{[1
]}

Gong, Xun ^{[1
]}

机构：

[1] Univ Cent Florida, RF & Microwave Integrated AMRI Syst Lab, Dept Elect Engn & Comp Sci, Orlando, FL 32816 USA

来源：

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

基金：

美国国家科学基金会;

关键词：

Beam steering; microstrip antennas; patch antenna; phased arrays; PLANE;

D O I：

10.1109/TAP.2012.2186265

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 new approach to parasitic phased-array antennas is presented. A symmetric two-layer, single-input inexpensive three-element array at 1-GHz employing varactors as tuning mechanisms are designed, fabricated, and measured. The driven element is mutually coupled to two parasitic elements in the H-plane. The varactors are used to control the mutual coupling and beam scanning and to maintain resonance at 1 GHz. A continuous scanning range of -15 to +15 degrees is measured with maintained impedance matching and radiation pattern integrity. The low cost of diode varactors, used in place of expensive phase shifters, allows for more economic fabrication. This is advantageous to applications in point-to-point communication systems, weather, and target tracking radar systems.

引用

页码：1803 / 1813

页数：11

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