A 19.7 MHz, Fifth-Order Active-RC Chebyshev LPF for Draft IEEE802.11n With Automatic Quality-Factor Tuning Scheme

A fifth-order LPF with a quality factor (Q) tuning circuit has been implemented for draft IEEE802.11n in a 0.13 CMOS technology. The proposed Q tuning technique realizes a low-power 19.7 MHz, active-RC Chebyshev LPF. The filter has dB gain, 30 nV/Hz 1/2 input-referred noise, 113 dBmuV input , P 1dB,...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2007-11, Vol.42 (11), p.2326-2337
Main Authors: Kousai, S., Hamada, M., Ito, R., Itakura, T.
Format: Article
Language:English
Subjects:
Active filters
Band pass filters
Bandwidth
Broadband amplifiers
Chebyshev approximation
Chebyshev filters
Circuits
CMOS
Frequency response
Gain
Noise
Noise levels
OFDM
Power filters
Prototypes
Quality factor
quality factor ( Q )
Tuning
Wideband
Wireless LAN
wireless local area network (WLAN)
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Description
Summary:A fifth-order LPF with a quality factor (Q) tuning circuit has been implemented for draft IEEE802.11n in a 0.13 CMOS technology. The proposed Q tuning technique realizes a low-power 19.7 MHz, active-RC Chebyshev LPF. The filter has dB gain, 30 nV/Hz 1/2 input-referred noise, 113 dBmuV input , P 1dB,draws 7.5 mA current from 1.5 V supply, and occupies an area of 0.2 mm 2 .
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2007.906189