Wide-range microwave frequency synthesis using an offset passive resonator

Author

Howe, D.A. ; Hatt, A. ; Nelson, C. ; Walls, F.L. ; Nava, J. F Garcia ; Sengupta, A.

Author_Institution

Nat. Inst. of Stand. & Technol., Boulder, CO, USA

fYear

2002

fDate

2002

Firstpage

584

Lastpage

589

Abstract

We demonstrate a technique to obtain wide synthesized tunability from the local oscillator (LO) of a low-noise, fixed-frequency microwave reference whose noise is suppressed by a high-Q cavity discriminator operated in a passive mode. The results show that under proper conditions the phase-locked LO´s phase noise in the tunable approach presented here and that for the normal fixed-frequency mode are substantially the same. Thus the need for a number of filters, mixers, and amplifiers necessary for an additional synthesizer is eliminated.

Keywords

Q-factor; cavity resonators; circuit noise; circuit tuning; dielectric resonator oscillators; discriminators; frequency synthesizers; microwave circuits; phase noise; LO phase noise; X-band DRO; broadband noise suppression; fixed-frequency microwave reference; high-Q cavity discriminator; high-Q microwave cavity; local oscillator; low-noise microwave reference; microwave frequency synthesizer; offset passive resonator; passive mode operation; phase-locked LO; wide-range frequency synthesis; Degradation; Error correction; Frequency synthesizers; Local oscillators; Microwave oscillators; Noise measurement; Phase measurement; Phase noise; Resonance; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium and PDA Exhibition, 2002. IEEE International

Print_ISBN

0-7803-7082-1

Type

conf

DOI

10.1109/FREQ.2002.1075949

Filename

1075949