Millimeter-wave optically scanning antenna based on photoinduced plasma grating

被引：14
|
作者：
Manasson, VA [1 ]
Sadovnik, LS [1 ]
Shnitser, PI [1 ]
Mino, R [1 ]
Kruger, JS [1 ]
机构：
[1] USA,RES OFF,RES TRIANGLE PK,NC 27709
来源：
OPTICAL ENGINEERING | 1996年 / 35卷 / 02期
关键词：
millimeter waves; scanning antennas; photogenerated plasma; semiconductors;
D O I：
10.1117/1.600904
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The photocontrolled millimeter-wave (MMW) antenna is an alternative approach to the phased array. it offers a high potential to decrease fabrication cost. We describe a new MMW scanning antenna controlled by light. The basic antenna element is a semiconductor plate containing a photoinduced plasma grating (PIPG). By changing the grating period and rotating the grating, the device is able to scan a MMW beam in two dimensions. To enhance antenna efficiency, we use an antenna design that takes advantage of the reflectance of the MMW mirror behind the semiconductor plate. We found that the pulse duration of the pumping light can strongly affect the antenna's output. Our calculations demonstrate that diffusion is responsible for decay of antenna efficiency. (C) 1996 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页码：357 / 361
页数：5
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