题目/Title：A Programmable Low-Pass Filter with Adaptive Miller Compensation for Zero-IF Transceiver

作者/Author：高佳,姜汉钧,张凌伟,董晶晶,王志华
                        Jia Gao,Hanjun Jiang,Lingwei Zhang,Jingjing Dong,Zhihua Wang

会议/Conference：MWSCAS 2012

地点/Location：Boise, Idaho, USA

年份/Issue Date：2012.5-8 Aug.

页码/pages：pp. 226 - 229

摘要/Abstract：
A programmable active-RC low-pass filter is presented with tunable bandwidth realized with a fast tuning circuit suited for a zero-IF transceiver. The filter adopts a3rd-order Bessel low-pass architecture. Its -3dB bandwidth can be programmed to 250K, 500K, 1M and 2MHz.An operational amplifier with adaptive Miller compensation is designed to maintain the stability of the circuit when the filter is configured to work under different frequency bands. An on-chip automatic frequency tuning circuit is designed to compensate for the errors in on-chip resistance and capacitance caused by process, voltage and temperature variations. The circuit is designed in a 0.18-μm CMOS technology and the overall current consumption is 0.98mA with a supply voltage of 1.8V. The IIP3 is 26.5dBm and the fast automatic tuning requires only 40μs.