Title :
A compact digital frequency synthesizer for GSM IF up/downconverter
Author :
Uusikartano, Riku ; Niittylahti, Jarkb
Author_Institution :
Digital & Comput. Syst. Lab., Tampere Univ. of Technol., Finland
Abstract :
A compact architecture of a digital frequency synthesizer for a GSM intermediate frequency up/downconverter is presented. The synthesizer is capable of generating frequencies from 54 to 87 MHz with 200 kHz spacing. The area-efficiency of the system is based on the utilization of the properties of signals with absolute periodicity. The system provides 16-bit sine and cosine outputs with a spurious-free dynamic range exceeding 100 dB, A VHDL-description of the system was synthesized using a 4-metal 0.35 μm n-well CMOS technology. The size of the design is 1100 gates
Keywords :
CMOS digital integrated circuits; cellular radio; direct digital synthesis; frequency convertors; 0.35 micron; 16 bit; 54 to 87 MHz; GSM; IF up/downconverter; VHDL-description; absolute periodicity; area-efficiency; digital frequency synthesizer; n-well CMOS technology; spurious-free dynamic range; CMOS technology; Dynamic range; Frequency synthesizers; GSM; Local oscillators; Phase noise; Read only memory; Signal generators; Signal synthesis; Table lookup;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.856009
