Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Patent
1998-10-09
2000-07-25
Bettendorf, Justin P.
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
333184, H03H 700
Patent
active
06094112&
ABSTRACT:
A surface mount filter device is provided having a device body with a plurality of terminations located thereon. Capacitors and inductors are located on the same chip to create a variety of LC filters, such as LPF, HPF, BPF and BRF, or combinations of these options, as well as LC resonator structures. The chip is preferably built by thin film technology, which allows a considerable reduction in component or circuit size. The device body is constructed having a rigid insulative substrate to which a first conductive pattern having one or more first capacitor plates is applied. A dielectric is located over the first conductive pattern, and itself supports a second conductive pattern defining the opposed capacitor plates. One or more layers of insulative polymer are located above the dielectric layer, and have conductor channels in which conductive material is located. The conductive material in the conductive channels forms the coil of the on-chip inductor. A sealing cover, such as glass or a planar polymeric sheet, is located above the polymeric insulative layers.
REFERENCES:
patent: 4302737 (1981-11-01), Kausche et al.
patent: 4888568 (1989-12-01), Kawaguchi
patent: 5225969 (1993-07-01), Takaya et al.
patent: 5363080 (1994-11-01), Breen
patent: 5532656 (1996-07-01), Yoshimura
Elron Ehud
Goldberger Haim
Refaely Isaac
AVX Corporation
Bettendorf Justin P.
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