DocumentCode :
2446784
Title :
A quad-band low power single chip direct conversion CMOS transceiver with /spl Sigma//spl Delta/-modulation loop for GSM
Author :
Götz, Edmund ; Kröbel, Hans ; Marzinger, G. ; Memmler, Bernd ; Münker, Christian ; Neurauter, Burkhard ; Römer, Dirk ; Rubach, Jörn ; Schelmbauer, Werner ; Scholz, Markus ; Simon, Martin ; Steinacker, Ulrich ; Stöger, Claus
Author_Institution :
Infineon Technol. AG, Munich, Germany
fYear :
2003
fDate :
16-18 Sept. 2003
Firstpage :
217
Lastpage :
220
Abstract :
This paper presents a fully integrated quad band GSM transceiver with a new sigma-delta modulator architecture designed in a standard 120 nm CMOS technology. The fully integrated VCO operates at 4 GHz with a frequency range that can be programmed by 10 bit. The output power of the transmitter is 8 dBm and no TX SAW filter is needed due to the low phase noise of -162 dBc/Hz at 20 MHz offset frequency. The inband phase noise of the synthesizer is only -100 dBc/Hz and an overall phase noise error of 1.6/spl deg/ rms has been measured. The receiver has constant gain of 57 dB and fits to a baseband processor providing a 14 bit ADC. The noise figure in all bands is below 3 dB typically. The chip is housed in a 48 pin VQFN package.
Keywords :
CMOS integrated circuits; cellular radio; low-power electronics; phase noise; sigma-delta modulation; transceivers; voltage-controlled oscillators; /spl Sigma//spl Delta/-modulation loop; 120 nm; 20 MHz; 4 GHz; 48-pin VQFN package; 57 dB; CMOS technology; GSM application; GSM transceiver; TX SAW filter; baseband processor; direct conversion CMOS transceiver; fully integrated VCO; low power CMOS transceiver; quad-band CMOS transceiver; sigma-delta modulator architecture; single chip CMOS transceiver; CMOS technology; Delta-sigma modulation; Frequency; GSM; Phase noise; Power generation; SAW filters; Transceivers; Transmitters; Voltage-controlled oscillators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
Type :
conf
DOI :
10.1109/ESSCIRC.2003.1257111
Filename :
1257111
Link To Document :
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