A 4.35-mW +22-dBm IIP3 continuously tunable channel select filter for WLAN/WiMax receivers in 90-nm CMOS

Summary, in English

A low-power high linearity CMOS G(m)-C channel select filter for WLAN/WiMax receivers in 90-nm CMOS technology is presented. To reduce power consumption a biquad cell with simple architecture and few devices is used. A simple but efficient technique is also used to improve the linearity of the filter without increasing its power consumption. The cutoff frequency of the sixth order Butterworth low-pass filter can be tuned from 8.1 to 13.5 MHz for WLAN and WiMax applications. The measurement results show an in-band IIP3 of +22 dBm and an input referred noise of 75 nV/root Hz at a power consumption of 4.35 mW from a 1-V supply. The differential filter occupies a chip area of 0.239 mm(2) excluding pads.

• Author: Mostafa Savadi Oskooei; Nasser Masoumi; Mahmud Kamarei; Henrik Sjöland
• Department/s: Department of Electrical and Information Technology; ELLIIT: the Linköping-Lund initiative on IT and mobile communication
• Publishing year: 2010
• Language: English
• Pages: 517-520
• Publication/Series: Proceedings IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
• Links: http://dx.doi.org/10.1109/RFIC.2010.5477387
• Document type: Conference paper
• Publisher: IEEE - Institute of Electrical and Electronics Engineers Inc.
• Topic: Electrical Engineering, Electronic Engineering, Information Engineering
• Keywords: CMOS; Channel select filter; G(m)-C filter; linear; low-power; WLAN; WiMax
• Conference name: 2010 IEEE Radio Frequency Integrated Circuits Symposium
• Conference date: 2010-05-23 - 2010-05-25
• Status: Published
• Research group: Elektronikkonstruktion; Analog RF
• ISBN/ISSN/Other: ISSN: 1529-2517