Resonator and filter with a spaced away ground electrode connect

Details Resonator and filter with a spaced away ground electrode connect Resonator and filter with a spaced away ground electrode connect

1995-04-11

1997-04-22

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333219, H01P 1203, H01P 708

Patent

active

056232373

ABSTRACT:
A resonator having a small size and/or a high Q value, for use in forming a filter with low insertion loss in spite of its small size. According to one aspect of the invention, a resonator includes a laminated body 22. The laminated body 22 includes a first dielectric layer 24a. On one surface of the first dielectric layer 24a, a loop shaped line electrode 26 and a strip shaped take-out electrode 28 are formed. On the other surface of the first dielectric layer 24a, a first earth electrode 30a and a first protection layer 34a are formed. On one surface of the first dielectric layer 24a, a second dielectric layer 24b is formed so as to cover the line electrode 26. On the second dielectric layer 24b, a second earth electrode 30b and a second protection layer 34b are formed. On side faces of the laminated body 22, six external electrodes are formed. One external electrode used as an earth terminal is connected to one end of the line electrode 26 and a lead-out electrode 32a of the first earth electrode 30a. Another three external electrodes used as the connecting electrodes having impedance are connected to the lead-out electrodes 32a of the first earth electrode 30a and the lead-out electrodes 32b of the second earth electrode 30b. Still another external electrode used as an input/output terminal is connected to the take-out electrode 28 of the line electrode 26.

REFERENCES:
patent: 5404118 (1995-04-01), Okamura et al.

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