Improved Tx-to-Rx isolation with balanced radar front-end

被引：0

作者：

Kim, JG ^{[1
]}

Ko, S ^{[1
]}

Jeon, S ^{[1
]}

Park, JW ^{[1
]}

Hong, S ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea

来源：

34TH EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3, CONFERENCE PROCEEDINGS | 2004年

关键词：

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：

This paper presents a balanced radar front-end MMIC to reduce Tx leakage at receiver. The radar front-end MMIC is composed of a differential cross-coupled oscillator, two differential amplifiers, two Lange couplers, and a Wilkinson combiner, which are implemented using low cost InGaP/GaAs HBT technology. The differential cross-coupled VCO shows the tuning range of 70 MHz from 22.767 GHz to 22.837 GHz. The peak output power is 0 dBm. The phase noise of VCO is -98.33 dBc/Hz at 1 MHz offset frequency. High Tx-to-Rx isolation of 50 dB is achieved in the balanced radar front-end. The additional cancellation due to balanced topology is expected to be 29.5 dB. The chip size is 2.25 x 1.75 mm(2).

引用

页码：1025 / 1028

页数：4

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