Title :
A tunable switched-capacitor programmable N-path tone receiver and generator
Author :
Chiappano, Giovanni ; Colamonico, Armando ; Donati, Marcello ; Maloberti, Franco ; Montecchi, Federico ; Palmisano, Giuseppe
Author_Institution :
Italtel, Milan, Italy
fDate :
12/1/1988 12:00:00 AM
Abstract :
An integrated full-duplex tone receiver and generator used for signaling in mobile radio systems and realized with a switched-capacitor pseudo N-path technique is described. A receiver filter with a quality factor programmable in the range 10-230 with an in-band loss less than 0.2 dB and center frequencies from 1 Hz up to 10 kHz was achieved. The tone generator of the system was realized with a programmable gain switched-capacitor amplifier that generates an eight-sample pseudo-sine-wave signal. The chip was fabricated using a 3-μm double-poly CMOS process. Its power consumption is 17 mW with a single 5-V supply, and its size is 18 mm2
Keywords :
CMOS integrated circuits; mobile radio systems; radio receivers; signal generators; signalling (telecommunication networks); switched capacitor filters; 0.2 dB; 1 Hz to 10 kHz; 17 mW; 3 micron; 5 V; double-poly CMOS process; integrated full-duplex tone receiver; mobile radio systems; programmable gain switched-capacitor amplifier; pseudo N-path technique; pseudo-sine-wave signal; signaling; tone generator; tunable switched-capacitor programmable N-path tone receiver; Band pass filters; Clocks; Counting circuits; Frequency; Land mobile radio; Low pass filters; Q factor; Receivers; Shift registers; Signal generators;
Journal_Title :
Solid-State Circuits, IEEE Journal of
