Title :
A multipurpose four IC satellite concept
Author :
Heymann, R. ; Irvine, G. ; Jessner, H. ; Kriedt, H. ; Ozoguz-Geissler, N.
Author_Institution :
Siemensag, Munich, West Germany
fDate :
8/1/1990 12:00:00 AM
Abstract :
For satellite TV applications, a set of four new integrated circuits was developed to improve the overall performance of the RF front-end, the video and sound IF processing, and to simultaneously drastically reduce the number of external components. This four-IC concept for the indoor unit consists of (1) a 2.3-GHz PLL (phase-locked loop) controlled by I2C-bus; (2) a 480-MHz FM-IF (intermediate frequency) limiting amplifier-demodulator with field strength and AFC outputs; (3) a video circuit for video processing and sound output; and (4) a multistandard sound IF circuit which contains a PLL-controlled sound IF converter and three parallel FM limiting amplifiers followed by demodulators for the different sound IF frequencies
Keywords :
automatic frequency control; demodulators; digital signal processing chips; direct broadcasting by satellite; frequency convertors; frequency modulation; phase-locked loops; television broadcasting; video amplifiers; 2.3 GHz; 480 MHz; AFC outputs; FM-IF limiting amplifier-demodulator; PLL-controlled sound IF converter; multipurpose four IC satellite concept; multistandard sound IF circuit; parallel FM limiting amplifiers; satellite TV applications; sound IF processing; video circuit; video processing; Application specific integrated circuits; Automatic frequency control; Demodulation; Frequency conversion; Phase locked loops; Radio frequency; Radiofrequency amplifiers; Radiofrequency integrated circuits; Satellite broadcasting; TV;
Journal_Title :
Consumer Electronics, IEEE Transactions on
