用于宽带cdma应用的SiGe下变频微混频器

2005 IEEE International Wkshp on Radio-Frequency Integration Technology: Integrated Circuits for Wideband Comm & Wireless Sensor Networks Pub Date : 1900-01-01 DOI:10.1109/RFIT.2005.1598901

Sung-Huang Lee, Chih-Yu Tsai, H. Chiou

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引用次数: 1

摘要

本文提出了一种不需要外部平衡的WCDMA微混频器。转换器单元应用于LO和RF端口，以取代将单端信号转换为差分输出所需的平衡器。除提供平衡功能外，变换器电池还改善了线性性能。这尤其有利于射频输入级。该微混频器采用0.35 um SiGe BiCMOS技术实现。测量输入P1 dB为- 12dbm, IIP3为2dbm。LO端口的实测隔离度均大于35db。混合器芯的电流消耗约为3.5 mA。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A SiGe down-conversion micromixer for wideband-CDMA application

This paper presents a micromixer for WCDMA applications with no external balun requirement. The transconverter cells are applied both to LO and RF port to replace the required baluns for converting the single-ended signal to differential output. Besides providing the function of balun, the transconverter cell also improves the linearity behavior. This benefits the RF input stage especially. This micromixer is realized in 0.35 um SiGe BiCMOS technology. The measured input P1 dB is -12 dBm and IIP3 is 2 dBm. The measured isolations of LO port are all higher than 35 dB. The current consumption of mixer core is about 3.5 mA.

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2005 IEEE International Wkshp on Radio-Frequency Integration Technology: Integrated Circuits for Wideband Comm & Wireless Sensor Networks

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