Means for matching impedances between a helical resonator and a

Details Means for matching impedances between a helical resonator and a Means for matching impedances between a helical resonator and a

1980-10-06

1982-08-03

Gensler, Paul L.

Wave transmission lines and networks

Coupling networks

With impedance matching

333219, 333238, H01P 502, H01P 700

Patent

active

043429696

ABSTRACT:
Impedance matching between a helical resonator of a helical resonator filter and a circuit connected thereto is accomplished by the provision of a microstrip transmission line including a microstrip stub printed on a printed circuit board, the microstrip stub being short in comparison to the wavelength at the resonant frequency of the filter whereby the microstrip stub assumes the characteristics of an inductive impedance. A first electrical end of the microstrip stub is connected to a first terminal of the helical resonator and to a first terminal of the circuit, and a second electrical end of the microstrip stub is connected to a second terminal of the helical resonator and to a second terminal of the circuit.

REFERENCES:
patent: 2041378 (1936-05-01), Smith
patent: 2446982 (1948-08-01), Pound
patent: 2794174 (1957-05-01), Ardibi et al.
patent: 2938175 (1960-05-01), Sommers et al.
patent: 3003126 (1961-10-01), Jasik
patent: 3400295 (1968-09-01), Chapell
patent: 3621484 (1971-11-01), Shult
patent: 3764942 (1973-10-01), Keim et al.

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