Optical gain control of a GaAs MMIC transmit-receive module compatible with optical spatial filters

1988 IEEE AP-S. International Symposium, Antennas and Propagation Pub Date : 1988-06-06 DOI:10.1109/APS.1988.93984

P. Herczfeld, A. Paolella

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引用次数: 3

Abstract

A description is given of the optical gain control of a microwave amplifier which could be used in antenna beamforming applications. The challenge in developing the experimental circuit was to devise a means for the optical control of the microwave subsystem consistent with microwave monolithic integrated circuits (MMIC) technology, and compatible with optical processing and computing techniques. The experimental circuit consists of four main sections on LED with pigtail, a light-sensitive FET, a DC amplifier, and a distributed microwave amplifier. The electronic circuits are standard GaAs MMIC components which can be integrated into a single chip. A 250- mu W optical signal provided by the LED gave rise to 15 HB of gain control. The approach has several important attributes such as: it is independent of the operating frequency of the microwave components and can be extended to the millimeter range. It is compatible with GaAs MMIC fabrication processes; it can be extended to phase control circuits for pulsed applications; it has a fast response and is cost-effective because it uses a low-cost, low power LED and standard MMIC; and it is totally compatible with parallel optical processing such as spatial filters.<>

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与光学空间滤波器兼容的GaAs MMIC收发模块的光增益控制

介绍了一种可用于天线波束形成的微波放大器的光增益控制。开发实验电路的挑战是设计一种符合微波单片集成电路(MMIC)技术的微波子系统的光控制方法，并与光处理和计算技术兼容。实验电路由带尾纤的LED、光敏场效应管、直流放大器和分布式微波放大器组成。电子电路是标准的GaAs MMIC元件，可以集成到单个芯片中。由LED提供的250 μ W光信号产生15 HB的增益控制。该方法具有几个重要的特点，如:它不依赖于微波元件的工作频率，可以扩展到毫米范围。它与GaAs MMIC制造工艺兼容;它可以扩展到脉冲应用的相位控制电路;它具有快速响应和成本效益，因为它使用低成本，低功耗LED和标准MMIC;与空间滤光器等平行光学处理完全兼容。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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1988 IEEE AP-S. International Symposium, Antennas and Propagation

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