Accession Number : ADA113253

Title :   Electronically Tunable Phase Locked Loop Oscillator.

Descriptive Note : Final technical rept. 10 Mar 80-12 Jun 81,

Corporate Author : E-SYSTEMS INC ST PETERSBURG FL ECI DIV

Personal Author(s) : Balasis,Mathew ; Davis,Michael R ; Jackson,Charles R

PDF Url : ADA113253

Report Date : Feb 1982

Pagination or Media Count : 149

Abstract : This report describes the design and development of a low noise, high power, variable oscillator incorporating a high 'Q' electronically tunable resonator as the frequency determining element. The VCO provides improved EMC performance in phase locked synthesizers which are a part of communications equipments. The oscillator combines a low noise VMOS transistor with the selectivity and out-of-band attenuation of a coaxial resonator to provide superior EMC performance. Several oscillator designs were examined and the basis for the final configuration is presented. Oscillator noise is discussed and models for analysis are explained. A brass board model was constructed and tested and the technical results are presented.

Descriptors :   *Communication equipment, *Electromagnetic compatibility, *Voltage controlled oscillators, *Noise reduction, Ultrahigh frequency, Transistors, Low noise, Models, Noise, configurations, Brass

Subject Categories : Electrical and Electronic Equipment
      Cybernetics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE