Tri Q Dinh

US Patent:

7714680, May 11, 2010

Filed:

May 15, 2007

Appl. No.:

11/803506

Inventors:

Reddy Vangala - Albuquerque NM, US
Tri Dinh - Albuquerque NM, US

Assignee:

CTS Corporation - Elkhart IN

International Classification:

H01P 1/20
H01P 7/04

US Classification:

333134, 333206, 333222

Abstract:

A ceramic monoblock filter including a direct signal path defined by at least four spaced-apart through-hole resonators in combination with ground bars extending between the through-hole resonators and a separate quadruplet cross-coupling alternate signal path defined by two conductive pads located adjacent the first and fourth ones of the through-hole resonators respectively and a separate external bridge member which interconnects and couples the two pads. The bridge member is preferably made of a material having a lower dielectric constant than the block of the filter. In one embodiment, the filter is a monoblock duplexer filter comprising respective transmit and receive sections each including at least four of the through-hole resonators, the ground bars, the two pads, and the bridge member. In the duplexer embodiment, additional through-hole resonators may define shunt zeros.

US Patent:

8174340, May 8, 2012

Filed:

May 4, 2010

Appl. No.:

12/799859

Inventors:

Reddy Vangala - Albuquerque NM, US
Tri Dinh - Albuquerque NM, US

Assignee:

CTS Corporation - Elkhart IN

International Classification:

H01P 1/20
H01P 7/04

US Classification:

333134, 333206, 333222

Abstract:

A ceramic monoblock filter including a direct signal path defined by at least four spaced-apart through-hole resonators in combination with ground bars extending between the through-hole resonators and a separate quadruplet cross-coupling alternate signal path defined by two conductive pads located adjacent the first and fourth ones of the through-hole resonators respectively and a separate external bridge member which interconnects and couples the two pads. The bridge member is preferably made of a material having a lower dielectric constant than the block of the filter. In one embodiment, the filter is a monoblock duplexer filter comprising respective transmit and receive sections each including at least four of the through-hole resonators, the ground bars, the two pads, and the bridge member. In the duplexer embodiment, additional through-hole resonators may define shunt zeros.