Title :
A miniaturized low-power synthesizer module with automatic frequency stabilization [for portable telephone applications]
Author :
Ishikawa, Masayuki ; Ishihara, Noboru ; Yamagishi, Akihiro ; Shimizu, Isao
Author_Institution :
NTT LSI Lab., Kanagawa, Japan
Abstract :
A compact low-power phase-locked loop (PLL) frequency synthesizer module which performs automatic frequency stabilization and intermittent operation is described. Two LSIs were developed to reduce both current drain and module size. One is a prescalar (3 mA at 1 GHz) using a high-performance bipolar process (SST), and the other is a PLL-AFC LSI using 1.2-μm mixed-signal CMOS. A total current drain of 15 mA and an overall size of 1.5 cm3 were achieved
Keywords :
CMOS integrated circuits; automatic frequency control; bipolar integrated circuits; frequency synthesizers; large scale integration; mobile radio systems; phase-locked loops; radiotelephony; 1 GHz; 1.2 micron; 800 MHz; PLL-AFC LSI; SST; UHF; automatic frequency stabilization; current drain; frequency synthesizer; high-performance bipolar process; intermittent operation; low power prescalar IC; miniaturized low-power synthesizer module; mixed-signal CMOS; portable telephone; Automatic frequency control; Counting circuits; Frequency estimation; Frequency measurement; Frequency synthesizers; Large scale integration; Phase locked loops; Telephony; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Vehicular Technology Conference, 1992, IEEE 42nd
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0673-2
DOI :
10.1109/VETEC.1992.245466
