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

fYear

1992

fDate

10-13 May 1992

Firstpage

752

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1992, IEEE 42nd

Conference_Location

Denver, CO

ISSN

1090-3038

Print_ISBN

0-7803-0673-2

Type

conf

DOI

10.1109/VETEC.1992.245466

Filename

245466