Title :
Design of a fully integrated 2 GHz CMOS frequency synthesizer
Author :
Ahola, Rami ; Stadius, Kari ; Halonen, Kari
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
This paper describes the design of a fully integrated phase-locked loop frequency synthesizer intended for use as the local oscillator in a mobile telecommunication receiver or transmitter. The design of some key blocks is discussed in more detail. These include a 64/65 dual modulus prescaler having a maximum input frequency of 2.4 GHz and a power dissipation of 7.3 mW, 10-bit programmable dividers for VCO and crystal reference frequencies, a phase detector and a chargepump, an integrated passive loop filter, and a balanced voltage-controlled oscillator having a tuning range from 1.8 to 2.2 GHz
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; frequency synthesizers; mobile communication; phase locked loops; voltage-controlled oscillators; 1.8 to 2.2 GHz; 7.3 mW; CMOS frequency synthesizer; balanced voltage-controlled oscillator; chargepump; crystal reference frequencies; dual modulus prescaler; input frequency; integrated passive loop filter; local oscillator; mobile telecommunication receiver; mobile telecommunication transmitter; phase detector; phase-locked loop; power dissipation; programmable dividers; tuning range; Frequency conversion; Frequency synthesizers; Local oscillators; Passive filters; Phase detection; Phase frequency detector; Phase locked loops; Power dissipation; Transmitters; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780643
