A Positive-Peak Detector with Adaptive Micro-Current Compensator for Wideband VCOs

被引：0

作者：

Wang, De-zhi ^{[1
]}

Zhang, Ke-feng ^{[1
]}

Zhou, Gong-hai ^{[1
]}

Zou, Xue-cheng ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Elect Sci & Technol, Wuhan 430074, Peoples R China

来源：

2012 IEEE 11TH INTERNATIONAL CONFERENCE ON SOLID-STATE AND INTEGRATED CIRCUIT TECHNOLOGY (ICSICT-2012) | 2012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：

A precise positive-peak detector with adaptive micro-current compensator is proposed to trace the tank amplitude V-T of wideband VCOs. The compensator includes three micro-current I-micro branches controlled by automatic frequency calibration (AFC). A decoding circuit is connected between the AFC and the compensator. If oscillation frequency of VCO increases, by use of the decoding circuit, the branch with smaller I-micro would be adaptively chosen for precisely tracing the V-T. In TSMC 0.18 mu m CMOS technology, when the proposed positive-peak detector is used for a VCO with output frequency from 1.52GHz to 3.2GHz, the maximum detection error is 80mV under different corners and temperature from -40 degrees C to 80 degrees C.

引用

页码：1046 / 1048

页数：3