Optically Controlled Microstrip Phased Arrays
Optically Controlled Microstrip Phased Arrays
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光控微带相控阵
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
A. Vilcot
中科院分区：
文献类型：
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作者：
M. El khaldi;F. Podevin;A. Vilcot
我们在这里提出应用微波器件的光控技术来对微带相控阵进行相移。使用的物理原理是光电导效应，当用足够波长的光信号照射线路中的间隙时，光电导效应能够产生可变的微波负载。这一原理应用在混合微波环上。我们设计了一种具有连续变化相位和准恒定|S21|的移相器，回波损耗很少。测量给出了有趣的结果。设计了一种低成本、小尺寸的微带相控阵天线。通过在不同光功率下照射移相器，主光束可以在H平面上从-25°到25°连续扫描。
We propose here to apply the technique of the optical control of microwave devices to perform phase-shifting for microstrip phased arrays. The physical principle used is the photoconductive effect which enables the creation of a variable microwave load, when a gap in a line is illuminated with an optical signal of adequate wavelength. This principle is applied on a hybrid microwave ring. We have designed a phase-shifter with continuously varying phase and quasi-constant |S21|, with few return losses. The measurements have given interesting results. A low cost, and small size microstrip phased array antenna has been designed. By illuminating the phase-shifter under different optical powers, the main beam can be scanned in the H-plane continuously from -25° to 25°.