Resonant circuit element having insignificant microphonic effect

Details Resonant circuit element having insignificant microphonic effect Resonant circuit element having insignificant microphonic effect

1991-03-12

1992-04-14

LaRoche, Eugene R.

Wave transmission lines and networks

Resonators

333235, H01P 700

Patent

active

051051753

ABSTRACT:
A rigid, monolithic structure for the resonator elements of a tuned stripline segment which may be adjusted by simple, low cost techniques. The resonator elements use a stripline segment (23,24) made from conductive layers of a multilayer printed circuit board. This structure allows the stripline segment to be totally enclosed in a solid, incompressible dielectric material (15,17) which is essentially immune to microphonic effects. A plurality of shorting holes (21) are fabricated at one end of the stripline which serve to short circuit the stripline segment (23) to the ground conductors (18,19) on the layers above and below the stripline segment (23). Adjustment of the resonant frequency is accomplished by removing the plated conductor inside one of the holes at a time, thus removing the short, until the desired resonant frequency is obtained.

REFERENCES:
patent: 4620168 (1986-10-01), Delestre et al.
patent: 4785271 (1988-11-01), Higgins, Jr.
patent: 4816788 (1989-03-01), Ishikawa et al.
patent: 4916417 (1990-04-01), Ishikawa et al.
patent: 4940955 (1990-07-01), Higgins, Jr.

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