A Ka-band Analog Predistoration Linearizer for Travelling Wave Tube Amplifiers

被引：0

作者：

Deng, Hai-Lin ^{[1
]}

Zhang, De-Wei ^{[1
]}

Zhou, Dong-Fang ^{[1
]}

Wang, Shu-Xing ^{[1
]}

Wang, Jia-Xuan ^{[1
]}

机构：

[1] Zhengzhou Inst Informat Sci & Technol, Dept Elect Field & Microwave, Zhengzhou 450001, Peoples R China

来源：

2015 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC), VOLS 1-3 | 2015年

关键词：

traveling wave tube amplifiers; analog predistortion technique; vector synthesis; third order intermodulation;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to compensate the nonlinear distortion of the traveling wave tube amplifiers (TWTAs), a new analog predistortion linearizer based on vector synthesis technique is presented. This linearizer consists of quadrature hybrids, adjustable analog attenuator based on PIN diodes and nonlinear circuit based on Schottky diodes. The analog predistortion linearizer can realize the expansion of amplitude and phase within the operating frequency (29 similar to 31 GHz) and rated input power range and achieve the compensation effect of different amplitudes and phases in reasonably adjusting the bias voltages of PIN and Schottky diodes. The Third Order Intermodulation (TOI) of a Ka-band TWTA was improved about 8.1 dB at -6dB output power back off (OBO) thanks to this proposed predistortion linearizer.

引用

页数：3

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