| 采用二极管的模拟预失真毫米波功放线性化器 |
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| 引用本文： | 李少岚,延波,李晨飞,谢小强.采用二极管的模拟预失真毫米波功放线性化器[J].微波学报,2012,28(1):70-72. |
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| 作者姓名： | 李少岚 延波 李晨飞 谢小强 |
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| 作者单位： | 电子科技大学电子工程学院,成都,611731 |
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| 基金项目： | 新世纪优秀人才支持计划(NCET) |
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| 摘 要： | 研制了一款用于毫米波频段的线性化器,采用模拟预失真技术,基于90°电桥和两个肖特基二极管,在外加直流偏置的情况下,产生预失真信号,通过矢量网络分析仪测试表明,当工作频率为30GHz时,其增益扩展了3～4dB,相位延迟了20°左右。将该线性化器与毫米波功率放大器级联,双音测试结果表明,当功放的输出功率为1dB压缩点回退3dB时,三阶交调指标在工作频率30GHz和31GHz时均改善了10dB左右。该线性化器结构简单、成本较低、实用性强。
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| 关 键 词： | 肖特基二极管 90°电桥 预失真线性化器 毫米波频段 |
Design of an Analog Pre-distortion Linearizer Using Schottky Diodes for Millimeter-Wave Power Amplifier |
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| LI Shao-lan,YAN Bo,LI Chen-fei,XIE Xiao-qiang.Design of an Analog Pre-distortion Linearizer Using Schottky Diodes for Millimeter-Wave Power Amplifier[J].Journal of Microwaves,2012,28(1):70-72. |
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| Authors: | LI Shao-lan YAN Bo LI Chen-fei XIE Xiao-qiang |
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| Affiliation: | (School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China) |
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| Abstract: | Based on analog pre-distortion,a millimeter wave linearizer is proposed in this paper.It is composed of a 3dB hybrid coupler and two Schottky diodes which generate the distorted signal while the external DC bias-voltage is applied.The amplifier is tested by a Vector Network Analyzer.The tested results show at 30GHz,the gain is expanded for 3 to 4dB,the phase is delayed about 20 degrees.Applying it to a MMW-PA,the result of the two-tone signal test shows the third-order inter-modualtion of the MMW-PA is improved by nearly 10dB when the PA works at 30 GHz and 31GHz.And it also has the characteristics of small structure and low cost,and is considerable practical. |
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| Keywords: | Schottky diode 90°hybrid pre-distortion linearizer millimeter wave band |
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