Radio frequency filter systems and methods

Details Radio frequency filter systems and methods Radio frequency filter systems and methods

2007-10-09

2007-10-09

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S219000, C333S219100

Reexamination Certificate

active

11105933

ABSTRACT:
Systems and methods are disclosed herein to provide filters for radio frequency applications. For example, in accordance with an embodiment of the present invention, a radio frequency filter includes a first dielectric layer having a first dielectric constant and a second dielectric layer having a second dielectric constant and disposed between the first dielectric layers, wherein the first dielectric constant is greater than the second dielectric constant.

REFERENCES:
patent: 3345535 (1967-10-01), Johnson et al.
patent: 4688009 (1987-08-01), Ferguson et al.
patent: 5488336 (1996-01-01), Rivera et al.
patent: 7057479 (2006-06-01), Furuya et al.
patent: WO2004059784 (2004-07-01), None

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