Stripline filter with a stripline-formed parallel capacitor

Details Stripline filter with a stripline-formed parallel capacitor Stripline filter with a stripline-formed parallel capacitor

1995-06-07

1998-06-23

Lee, Benny T.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333222, H01P 1203

Patent

active

057709866

ABSTRACT:
A resonator having an improved spurious characteristic is provided. The resonator comprises a dielectric substrate having a plurality of strip lines extending longitudinally from the central portion of the upper surface toward the rear surface of the substrate by turning downward along the shorter side surfaces of the substrate such that the strip lines extending from both sides of the upper surface of the substrate are arranged in an alternative fashion with their narrowed top end portions overlapping each other in spaced apart relationships so as to be electromagnetically coupled. The portion of the dielectric substrate sandwiched between the opposing upper and rear portions of each strip line forms a capacitor. Further, a ground electrode is formed at the center of the rear surface of the substrate so as to be connected to the end portions of the strip lines. Input and an output electrode continuous with some of the strip lines, respectively, are also provided on the rear surface of the substrate.

REFERENCES:
patent: 3588753 (1971-06-01), Shimizu
patent: 4963843 (1990-10-01), Peckham
patent: 5105173 (1992-04-01), Itou
patent: 5373271 (1994-12-01), Hirai et al.
patent: 5376908 (1994-12-01), Kawaguchi et al.
patent: 5519366 (1996-05-01), Kaneko et al.

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