A 1.2V Wide-Band SC Filters for Wireless Communication Receivers

Author

Yang, Huikwan ; Cha, Sanghyun ; Lee, Seungyun ; Lee, Sangheon ; Lim, Jinup ; Choi, Joongho

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Seoul

fYear

2006

fDate

14-17 Nov. 2006

Firstpage

1

Lastpage

4

Abstract

This paper presents the design of a 1.2 V wide-band switched-capacitor (SC) filter for wireless communication receiver applications. The topology of this filter is the 5th-order elliptic low-pass filter. The highest clock frequency in the system is 50 MHz (effective sampling frequency is 100 MHz with double sampling scheme) while the four programmable cut-off frequencies are 1.25 MHz, 2.5 MHz, 5 MHz and 10 MHz. For low-power systems powered by single-cell battery, the SC filter was elaborately designed to operate at 1.2 V power supply. The double-sampling, 5th-order elliptic SC filter meet the desired -40 dB stop-band attenuation specification. Simulation result show that the 3rd-order input intercept point (IIP3) is about 27dBm. The filter was fabricated in a 0.25mum 1P5M standard CMOS technology and measured frequency responses shows good agreement with the simulation ones. The current consumption is 34 mA from a 1.2 V power supply

Keywords

CMOS integrated circuits; broadband networks; frequency response; low-power electronics; radio receivers; sampling methods; switched capacitor filters; telecommunication network topology; 0.25 micron; 1.2 V; 1.25 MHz; 10 MHz; 1P5M standard CMOS technology; 2.5 MHz; 34 mA; 5 MHz; 50 MHz; IIP3; double-sampling; elliptic low-pass filter; filter topology; frequency response; input intercept point; low-power system; programmable cut-off frequency; stop-band attenuation specification; switched-capacitor; wide band SC filter; wireless communication receiver; CMOS technology; Clocks; Communication switching; Cutoff frequency; Low pass filters; Power supplies; Sampling methods; Topology; Wideband; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 2006. 2006 IEEE Region 10 Conference

Conference_Location

Hong Kong

Print_ISBN

1-4244-0548-3

Electronic_ISBN

1-4244-0549-1

Type

conf

DOI

10.1109/TENCON.2006.343805

Filename

4142480