A 5-GHz radio front-end with automatically Q-tuned notch filter and VCO

被引:27
作者
Rogers, JWM [1 ]
Plett, C [1 ]
机构
[1] Carleton Univ, Dept Elect, Ottawa, ON K1S 5B6, Canada
关键词
LC filters; phase noise; Q-tuning; radio-frequency integrated circuit (RFIC); SiGe; voltage-controlled oscillator (VCO); wireless communications;
D O I
10.1109/JSSC.2003.815915
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
A low-voltage receiver front-end for 5-GHz radio applications is presented. The receiver consists of a low-noise amplifier (LNA) with notch filter, a voltage-controlled oscillator (VCO), and a mixer. The LNA/notch filter has an automatic Q-tuning circuit integrated with it to provide good image rejection., On-chip transformers are used extensively in the receiver to improve performance and facilitate low-voltage operation. The receiver has a gain of 19.8 dB, noise figure of 4.5 dB, a third-order input intercept point (IIP3) of -11.5 dBm, and an image rejection of 59 dB, and the VCO had a phase noise of -116 dBc/Hz at 1-MHz offset.
引用
收藏
页码:1547 / 1554
页数:8
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