High performance embedded RF filters

Details High performance embedded RF filters High performance embedded RF filters

2005-07-05

2005-07-05

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S227000

Reexamination Certificate

active

06914501

ABSTRACT:
Embedded, coupled, shaped waveguide resonators having conductive walls sandwiched between two fired green tape stacks, said conductive walls having apertures therein whose size and location determine the degree of coupling. These waveguides are made by forming openings in a first green tape stack, defining walls and apertures therein, mounting a second green tape stack having a conductive layer thereon thereover and firing the assembly. E-plane probes are inserted in openings in the second green tape stack and connected to microstrip transmission lines on an external surface pf this green tape stack.

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Gipprich et al, “Embedded Waveguide Filters for Microwave and Wireless Applications Using Cofired Ceramic Technologies”, Internatl J of Microcircuits and Electronic Packaging, vol. 21, No. 3, 3rd Quarter 1998, pp 279-283.
EP Search Report dated Feb. 5, 2003.

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