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

fYear

1988

fDate

25-27 May 1988

Firstpage

861

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1988., IEEE MTT-S International

Conference_Location

New York, NY, USA

Type

conf

DOI

10.1109/MWSYM.1988.22168

Filename

22168