DocumentCode
2489484
Title
An analog/digital interface for cellular telephony
Author
Van Bavel, Nicholas ; Maulic, P.C. ; Albright, Keith S. ; Gong, Xue-Mei
Author_Institution
Crystal Semicond. Corp., Austin, TX, USA
fYear
1994
fDate
1-4 May 1994
Firstpage
395
Lastpage
398
Abstract
This paper describes a mixed-signal ASIC for dual-mode (analog/digital) cellular telephony applications. It consists of two transmit and receive channels for the I and Q channels of a quadrature phase shift keying (QPSK) modulation system. It also includes three 8-bit DAC´s for control purposes as well as a bandgap voltage reference and bus interface circuitry. The chip is part of a 4-chip chipset implementation of an IS-54 dual mode telephone
Keywords
cellular radio; digital radio; mixed analogue-digital integrated circuits; quadrature phase shift keying; telephone equipment; 8 bit; I channel; IS-54 dual mode telephone; Q channel; analog/digital interface; bandgap voltage reference; bus interface circuitry; cellular telephony; chipset; control DACs; mixed-signal ASIC; quadrature phase shift keying modulation; receive channel; transmit channel; Clocks; Delta modulation; Low pass filters; Modems; Operational amplifiers; Passband; Quadrature phase shift keying; Radio frequency; Telephony; Time division multiple access;
fLanguage
English
Publisher
ieee
Conference_Titel
Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994
Conference_Location
San Diego, CA
Print_ISBN
0-7803-1886-2
Type
conf
DOI
10.1109/CICC.1994.379695
Filename
379695
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