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引用次数: 0
摘要
本文介绍了基底集成波导（SIW）在漏波天线（LWA）设计中的应用。该天线通过 SIW 结构顶壁的宽槽向前辐射。槽的有效宽度可通过改变连接在槽边缘和插入式导电条之间的两个变容器阵列的电容来改变。通过这种方式，天线的辐射模式可由直流偏压控制，而直流偏压可设定变容电容器的电容值。通过将直流偏压从 2 V 变为 12 V，最大辐射方向的仰角可在 35° 范围内变化。测得的天线特性与模拟预测的一致。该天线可通过平面电路板技术简单制造。
Leaky-wave antenna on substrate-integrated waveguide with radiation pattern controlled by DC voltage
This paper presents the application of a substrate-integrated waveguide (SIW) for the design of a leaky-wave antenna (LWA). The antenna radiates through a wide slot in the top wall of the SIW structure in the forward direction. The effective width of the slot is varied by changing capacitances of two arrays of varactors connected between slot edges and inserted conducting strips. The radiation pattern of the antenna is by this way controlled by DC bias, which sets the capacitances of varactors. The maximum radiation direction in elevation can be varied within 35° by changing the DC bias from 2 to 12 V. This elevation angle is measured from the broad side direction perpendicular to the antenna substrate. The measured antenna characteristics are in accord with those predicted by simulation. The antenna can be simply fabricated by a planar circuit board technology.
期刊介绍：
The prime objective of the International Journal of Microwave and Wireless Technologies is to enhance the communication between microwave engineers throughout the world. It is therefore interdisciplinary and application oriented, providing a platform for the microwave industry. Coverage includes: applied electromagnetic field theory (antennas, transmission lines and waveguides), components (passive structures and semiconductor device technologies), analogue and mixed-signal circuits, systems, optical-microwave interactions, electromagnetic compatibility, industrial applications, biological effects and medical applications.
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