A programmable low-pass filter with adaptive miller compensation for zero-IF transceiver

Author

Gao, Jia ; Jiang, Hanjun ; Zhang, Lingwei ; Dong, Jingjing ; Wang, Zhihua

Author_Institution

Tsinghua Nat. Lab. for Inf. Sci. & Technol., Tsinghua Univ., Beijing, China

fYear

2012

fDate

5-8 Aug. 2012

Firstpage

226

Lastpage

229

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 a 3rd-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.

Keywords

CMOS integrated circuits; RC circuits; circuit stability; low-pass filters; operational amplifiers; programmable circuits; transceivers; 3rd-order Bessel low-pass architecture; CMOS technology; adaptive Miller compensation; circuit stability; fast tuning circuit; on-chip automatic frequency tuning circuit; on-chip resistance; operational amplifier; programmable active-RC low-pass filter; programmable low-pass filter; zero-IF transceiver; Band pass filters; Bandwidth; Capacitors; Circuit stability; Low pass filters; Transceivers; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2012 IEEE 55th International Midwest Symposium on

Conference_Location

Boise, ID

ISSN

1548-3746

Print_ISBN

978-1-4673-2526-4

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2012.6291998

Filename

6291998