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Showing papers on "GSM frequency bands published in 1991"


01 Jan 1991
TL;DR: In this article, a single chip solution for a GSM 900 MHz RF TX quadrature modulator and RX quadratures demodulator was designed and fabricated in a 9 gHz Silicon bipolar technology.
Abstract: A single chip solution for a GSM 900 MHz RF TX quadrature modulator and RX quadrature demodulator was designed and fabricated in a 9 gHz Silicon bipolar technology. The transmit modulator is a direct upconverter and the receive demodulator operates in a zero IF architecture. This d evice is one of the key-components of a pocket size handportabl e phoneset for application in the GSM pan European digital mobile radio system. The consumption from the battery is 25 mA in RX mode and 45 mA in

9 citations


Proceedings ArticleDOI
20 Oct 1991
TL;DR: A survey of current European programs for digital cellular communications is presented in this paper, which is organized in national and international projects, and details are presented and discussed for each system and projected market.
Abstract: A survey of current European programs for digital cellular communications is presented. These programs are organized in national and international projects. Second-generation digital mobile phones will exist at 900 MHz (GSM), 1800 MHz (PCN, DCS, etc.) in 1993, and 2 GHz and above (UMTS) in 1998. There is also a broadband mobile service at 60 GHz projected for the end of the century. Details are presented and discussed for each system and projected market. >

3 citations