漏波天线
光学
极化(电化学)
圆极化
电容器
印刷电路板
天线(收音机)
物理
材料科学
微带天线
电气工程
微带线
工程类
电压
物理化学
化学
出处
期刊:Asia-Pacific Microwave Conference
日期:2010-12-01
卷期号:: 865-868
被引量:5
摘要
A leaky-wave antenna (LWA) with circular polarization based on the composite right/left-handed (CRLH) substrate integrated waveguide (SIW) is investigated and presented. Series interdigital capacitors have been introduced into the circuit by etching the slots on the waveguide surface achieving a CRLH functionality. Two symmetrical leaky traveling-wave transmission lines with orthogonal polarizations are placed side-by-side and excited with 90° phase difference generating a pure circular polarization mode. The main beam of this antenna can be steered continuously by varying the frequency while maintaining a low axial ratio (below 3 dB) within the main beam direction. The performance of this LWA is verified through both full-wave simulation and measurement of a fabricated prototype showing a good agreement.
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