An integrated SAW-less narrowband RF front-end

Author

Abouzied, Mohamed ; Osman, Hattem ; Mohieldin, Ahmed N. ; Emira, Ahmed ; Soliman, Ahmed

Author_Institution

Dept. of Electr. Eng., Cairo Univ., Giza, Egypt

fYear

2010

Firstpage

664

Lastpage

667

Abstract

In this paper an integrated SAW-less narrowband RF front-end for direct conversion wireless receivers is presented. The analysis of the feedback system shows a shift of the center frequency f_RX for the overall RF bandpass filter from its nominal value f_LO. The proposed architecture incorporates a notch filter at 2f_LO to insure that there is no shift in f_RX. The design has been implemented in 65nm CMOS process. It consumes 44mA from a single 1.2V supply. Simulation results show a rejection of more than 15dB in a bandwidth of +/-500MHz around 2GHz due to the additional feedback loop. The theoretical and simulation results are in close agreement.

Keywords

CMOS integrated circuits; band-pass filters; closed loop systems; radiofrequency filters; surface acoustic waves; RF bandpass filter; direct conversion wireless receivers; integrated SAW-less narrowband RF front-end; Band pass filters; Bandwidth; Baseband; Filtering; Local oscillators; Narrowband; Negative feedback; Radio frequency; Stability; Surface acoustic waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2010 53rd IEEE International Midwest Symposium on

Conference_Location

Seattle, WA

ISSN

1548-3746

Print_ISBN

978-1-4244-7771-5

Type

conf

DOI

10.1109/MWSCAS.2010.5548913

Filename

5548913