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在微波频段雷达上采用低噪声晶体管高频放大器,已处于比较成熟的阶段。它不仅具有和常温参量放大器相当的噪声系数,而且频带宽,性能稳定,调整简单,寿命长,便于使用维护。因此国内外新型雷达均尽可能应用低噪声晶放。推广使用这一新技术,对现役雷达实施技术改造也有很大意义。但突出的矛盾是晶体管耐功率差。雷达设备收发共用天线、漏功率大,极易烧管,致使这一新技术较长时间一直不能推广使用。通过近年来对581晶放应用
In the microwave band radar on the use of low-noise transistor high-frequency amplifier, has been in a more mature stage. It not only has the same noise coefficient and temperature parameter amplifier, but also the bandwidth, stable performance, simple adjustment, long life, easy to use and maintain. Therefore, new types of radars at home and abroad are used as low as possible. Promote the use of this new technology, the implementation of technological transformation of active radar is also of great significance. However, the prominent contradiction is the poor transistor resistance. Receiving and sharing of radar antenna equipment, leakage power, easy to burn, resulting in a new technology for a long time has been unable to promote the use of. Through the recent 581 crystal application