Electronic oscillator with transmission line tuning of phase noi

Details Electronic oscillator with transmission line tuning of phase noi Electronic oscillator with transmission line tuning of phase noi

1994-11-14

1995-12-05

Grimm, Siegfried H.

Oscillators

With distributed parameter resonator

Parallel wire type

331107SL, 331117D, 331177V, 331116R, 331158, H03B 518, H03B 532

Patent

active

054732875

ABSTRACT:
An improved electronic oscillator of limited bandwidth for better phase noise and linearity characteristics, and method for production, where a transmission line of specific characteristics is introduced between major components of the frequency source to significantly improve phase noise and linearity, and minor adjustments to the L/C ratio of the transmission line during production testing further optimize phase noise and linearity without adverse effects on other circuit parameters. The improvement chiefly relates to the length, configuration and accessibility of a transmission line connecting a resonator and main tuning capacitor in a series resonant tank circuit of an oscillator.

REFERENCES:
patent: 4621241 (1986-11-01), Kiser
patent: 4733199 (1988-03-01), Khanna
patent: 4737737 (1988-04-01), Khanna
patent: 4998077 (1991-03-01), Nanni et al.
patent: 5130675 (1992-07-01), Sugawara
patent: 5225793 (1993-07-01), Higashiyama et al.
patent: 5231361 (1993-07-01), Smith et al.
patent: 5325064 (1994-06-01), Leanes et al.
Coaxial Resonators & Inductors Trans Tech Pub 50030170 (May 1990).
Using Coaxial Line Elements As Inductors Feb. 2, 1994 Trans Tech Application Notes.

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