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A low-voltage receiver front-end for 5-GHz radio applications is presented. The receiver consists of a low-noise amplifier (LNA) with notch filter, a voltage-controlled oscillator (VCO), and a mixer. The LNA/notch filter has an automatic Q-tuning circuit integrated with it to provide good image rejection. On-chip transformers are used extensively in the receiver to improve performance and facilitate low-voltage operation. The receiver has a gain of 19.8 dB, noise figure of 4.5 dB, a third-order input intercept point (IIP3) of -11.5 dBm, and an image rejection of 59 dB, and the VCO had a phase noise of -116 dBc/Hz at 1-MHz offset.
Published in:
Solid-State Circuits, IEEE Journal of
(Volume:38
,
Issue:
9
)
Date of Publication: Sept. 2003
- Page(s):
- 1547 - 1554
- ISSN :
- 0018-9200
- INSPEC Accession Number:
- 7739007
- Digital Object Identifier :
- 10.1109/JSSC.2003.815915
- Date of Current Version :
- 04 September 2003
- Issue Date :
- Sept. 2003
- Sponsored by :
- IEEE Solid-State Circuits Society
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