Dielectric notch resonator

Details Dielectric notch resonator Dielectric notch resonator

1988-12-14

1990-01-23

Nussbaum, Marvin L.

Wave transmission lines and networks

Resonators

Dielectric type

333202, 333230, 333235, H01P 710

Patent

active

048961256

ABSTRACT:
A dielectric notch resonator particularly suitable for use in a band reject filter operable at ultra-high frequencies comprises a dielectric resonator and an associated housing which results in a reactance having an imaginary component effectively nulled by a coupling reactance mechanism forming part of the dielectric notch resonator so as to present a relatively low resistive impedance load at a given center frequency and frequencies in a narrow bandwidth thereabout. The coupling reactive mechanism comprises an inductive wire and a serially connected variable capacitor so as to null the reactive component of the dielectric resonator at a particular center frequency and to modify the symmetry of the rejected frequency bandwidth by adjusting the capacitance of the variable capacitor.

REFERENCES:
patent: 4028652 (1977-06-01), Wakino et al.
patent: 4241322 (1980-12-01), Johnson et al.

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