A 28-MHz wideband switched-capacitor bandpass filter with transmission zeros for high attenuation

A 28-MHz wideband switched-capacitor bandpass filter with transmission zeros for high attenuation

A 28-MHz wideband switched-capacitor (SC) bandpass filter employs an N-path technique and implements transmission zeros in the transfer function to achieve high attenuation. A modified SC biquadratic filter architecture is proposed to achieve high-speed operation. Implemented in a 0.35-/spl mu/m CMO...

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Veröffentlicht in:IEEE journal of solid-state circuits 2005-03, Vol.40 (3), p.785-790
Hauptverfasser: Ng, K.W.H., Luong, H.C.
Format: Artikel
Sprache:eng
Schlagworte:
Area measurement
Attenuation
Band pass filters
Bandpass filter
Bandpass filters
Bandwidth
Circuits
CMOS
CMOS process
Dissipation
double sampling
Filtering theory
Frequency
High speed
Noise levels
pseudo
Semiconductor device measurement
switched capacitor
Transfer functions
transmission zero
Wideband
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Beschreibung
Zusammenfassung:A 28-MHz wideband switched-capacitor (SC) bandpass filter employs an N-path technique and implements transmission zeros in the transfer function to achieve high attenuation. A modified SC biquadratic filter architecture is proposed to achieve high-speed operation. Implemented in a 0.35-/spl mu/m CMOS process, the bandpass filter operates at 28-MHz center frequency with a 3.84-MHz bandwidth and adjacent-channel attenuation of more than 35 dB. At 3-V supply, the filter measures a dynamic range of 37 dB at the 1% THD3 point while dissipating 19.6-mW per pole and occupying a chip area of 1.65 mm/sup 2/.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2005.843608