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

Volume

23

Issue

6

fYear

1988

fDate

12/1/1988 12:00:00 AM

Firstpage

1418

Lastpage

1425

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;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.90041

Filename

90041