A merged CMOS LNA and mixer for a WCDMA receiver
Author
Summary, in English
A low-noise amplifier (LNA) and mixer circuit in 0.35-mum CMOS operates at 2.1 GHz. Merging the LNA and mixer lowers the number of transistors in the signal path and thereby also the nonlinearity and power consumption. The circuit meets the specifications for a direct conversion wide-band code-division multiple access (WCDMA) receiver. Its noise figure is 3.4 dB (5 kHz to 5 MHz), the total conversion gain is 23 dB, the third-order input-referred intercept point is -1.5 dBm, and the local oscillator leakage to the antenna is less than -71 dBm. The fully differential circuit takes 8 mA from a 2.7-V supply.
Publishing year
2003
Language
English
Pages
1045-1050
Publication/Series
IEEE Journal of Solid-State Circuits
Volume
38
Issue
6
Document type
Journal article
Publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Keywords
- RF CMOS
- receiver
- mixer
- low-noise amplifier (LNA)
- front-end
- CMOS
- direct conversion
- zero IF
- wide-band code-division multiple access (WCDMA)
Status
Published
ISBN/ISSN/Other
- ISSN: 0018-9200