Title :
A CMOS gyrator low-IF filter for a dual-mode Bluetooth/ZigBee transceiver
Author :
Guthrie, Brian ; Hughes, John ; Sayers, Tony ; Spencer, Adrian
Author_Institution :
Lifespan Scotland Ltd., Inverness, UK
Abstract :
A low-IF polyphase channel filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-μm CMOS process, the filter has a fifth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplifier designs. It consumes ≤1 mW and achieves image band rejection ≥44 dB, input referred noise of ≤52.2 μVrms and input referred third-order intermodulation intercept of ≥20 dBVp, which gives a spurious-free dynamic range of ≥68.4 dB. Chip area including its tuning circuit is 0.23 mm2.
Keywords :
Bluetooth; CMOS integrated circuits; band-pass filters; circuit tuning; gyrators; transceivers; 0.18 micron; CMOS gyrator; CMOS process; dual-mode Bluetooth/ZigBee transceiver; low-IF polyphase channel filter; preamplifier design; third-order intermodulation; transconductor design; tuning circuit; Band pass filters; Bluetooth; CMOS process; Circuit noise; Dynamic range; Gyrators; Preamplifiers; Transceivers; Transconductors; ZigBee; CMOS; Channel filter; gyrator; transceiver;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2005.848146
