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毫米波线性化固态功放的研制
李凯,黄建,李培
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(中国西南电子技术研究所，成都 610036;电子科技大学物理电子学院，成都 61005 4)

摘要:

研制了工作于Ka频段的10 W线性化固态功放。采用预失真技术的线性化单元主要由一个肖特基二极管和一个电容并联构成，具有增益扩展和相位延迟的特性，并且其增益和相位特性具有可调性。将其应用于工作频率为30 GHz、输出功率为10 W 的功放，双音激励信号频率间隔为5 MHz，三阶互调（IMD3）可以改善15 dBc。

关键词: 毫米波固态功放三阶互调预失真线性化器

DOI：

基金项目:

Development of linearizer for millimeter-wave solid state power amplifier

LI Kai,HUANG Jian,LI Pei

(Southwest China Institute of Electronic Technology，Chengdu 610036，China;Institute of Physical Electronics，University of Electronic Science and Techn ology of China，Chengdu 610054，China)

Abstract:

A linearizer for 10 W Solid State Power Amplifier(SSPA) in Kaband is devel oped. The millimeterwave(MMW) predistortion linearizer, which is composed of a Schottky diode and a parallel capacitor, has gain expansion and phase shift char acteristics, and its characteristics can be controlled. By applying this lineari zer to a 30 GHz power amplifier with 10 W output power, and using a twotone prompting sign al with 5 MHz spacing, the improvement of IMD3 is 15 dBc.

Key words: millimeter wave(MMW) solid state power amplifier(SSPA ) three order intermodulation predistortion linearizer