Phase characterization of two-tone intermodulation distortion

被引：9

作者：

Crespo-Cadenas, C ^{[1
]}

Reina-Tosina, J ^{[1
]}

Madero-Ayora, MJ ^{[1
]}

机构：

[1] Univ Seville, Escuela Super Ingn, Seville 41092, Spain

来源：

2005 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, VOLS 1-4 | 2005年

关键词：

two-tone test setup; electrical memory effects; IM products; phase asymmetries; Volterra series; amplifier distortion;

D O I：

10.1109/MWSYM.2005.1516979

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：

An automated setup for the characterization or phase asymmetries in nonlinear microwave circuits under two-tone excitation is presented. The method includes a novel approach to generate two synchronized tones with the same amplitude and phase using an arbitrary-waveform signal generator. Special attention is devoted to the evaluation of two-tone MID impairments as a consequence of memory effects and assess its dependence on their separation in frequency. Experimental results over a HEMT amplifier exhibiting phase asymmetries are compared with standard two-tone measurements and show that the accuracy of this procedure is good, with negligible non-systematic errors.

引用

页码：1505 / 1508

页数：4

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