Title :
Digital radio link synthesized with a direct-division PLL at 22 GHz
Author :
Dorta, P. ; Perez, J. ; Rodriguez, I.
Author_Institution :
ETSIT City Univ., Madrid, Spain
Abstract :
A low-cost, effective and reliable radio subsystem, working in the 21.2-23.6-GHz band, is presented. Low cost has been achieved by integration of the RF head into a single microstrip assembly. The microstrip transmitter and receiver are described along with the direct-division phase-locked-loop (PLL) synthesizer circuit. The system´s noise figure (12 dB) makes it possible to obtain a receiver sensitivity of -86 dBm with a 3.5-MHz filter and 2 FSK modulation. The values of output power and antenna gain permit an available system gain of 184 dB, which assures a transmission range of 10 km for a rainfall outage of less than 0.01% average per year for the worst Spanish weather conditions.<>
Keywords :
digital communication systems; frequency shift keying; frequency synthesizers; microwave links; phase-locked loops; transceivers; 10 km; 12 dB; 184 dB; 2 FSK modulation; 21.2 to 23.6 GHz; SHF; Spanish weather conditions; digital radio; direct-division PLL; microstrip assembly; microwave link; phase-locked-loop; radio subsystem; rainfall outage; receiver; synthesizer circuit; transceivers; transmitter; Assembly; Costs; Digital communication; Integrated circuit reliability; Microstrip; Phase locked loops; Radio frequency; Radio transmitters; Receivers; Synthesizers;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22168
