Browse Prior Art Database

USING SWITCHING MOSFETs IN LOW PHASE NOISE OSCILLATORS

IP.com Disclosure Number: IPCOM000007622D
Original Publication Date: 1996-May-01
Included in the Prior Art Database: 2002-Apr-10

Publishing Venue

Motorola

Related People

Authors:
Eliav Zipper Yair Amran Yehuda Eder

Abstract

Low phase noise is an important property of the synthesizer in HF SSB radio. The phase noise is depended on the phase noise of the VCO. Low phase noise VCOs are dificult to achieve and generally require high quality resonator elements. The active device, in the VCO, has a secondary importance in this aspect. Still, the experience that was gained dur- ing the development process shows, that JFET is superior to BJT for low phase noise VCOs.