Title :
Low Noise Agile Microwave Frequency Synthesizer for Satellite Comunications
Author :
Amati, M. ; Bernasconi, A. ; Tosini, R.
Abstract :
An attractive approach to mi crowave frequency synthesis is presented, which allows to obtain very low near-carrier phase noise and fully frequency agility required for digital Satellite Communications. A highly modular VHF Multiloop Synthesizer (VMS) is used as reference frequency for a Samp1ed Microwave Loop (SML), wh ich is based on an efficient sampling technique, using different harmonics. This approach allows to simplify the microwave circuits, avoiding dividers, multipliers and frequency conversions. A microprocessor performs all the control functions for both VMS and SML.
Keywords :
Frequency conversion; Frequency synthesizers; Microwave circuits; Microwave frequencies; Microwave theory and techniques; Phase noise; Sampling methods; Satellite communication; VHF circuits; Voice mail;
Conference_Titel :
Microwave Conference, 1989. 19th European
Conference_Location :
London, UK
DOI :
10.1109/EUMA.1989.334028
