Nam Van Phan

US Patent:

20160380322, Dec 29, 2016

Filed:

Jun 29, 2015

Appl. No.:

14/754212

Inventors:

Alexandre Rogozine - Rio Rancho NM, US
Nam Phan - Rio Rancho NM, US

International Classification:

H01P 1/20
H01P 7/06

Abstract:

A dielectric wave guide filter comprising a block of dielectric material defining a plurality of resonators separated by an interior layer of conductive material. A first direct path for the transmission of an RF signal is defined by the plurality of resonators. An external substrate is coupled to an exterior surface of the block of dielectric material and defines a pair of RF signal input/output transmission vias filled with a conductive material and an interior RF signal transmission line extending between and interconnecting the pair or RF signal input/output transmission vias and providing an indirect cross-coupling path for the RF signal between two of the resonators separated by the interior layer of conductive material.

US Patent:

20150295294, Oct 15, 2015

Filed:

Apr 9, 2015

Appl. No.:

14/682271

Inventors:

Alexandre Rogozine - Rio Rancho NM, US
Reddy Vangala - Albuquerque NM, US
Nam Phan - Rio Rancho NM, US

International Classification:

H01P 1/207
H04L 5/14

Abstract:

An RF duplexer waveguide filter module for the transmission and filtering of TX and RX RF signals comprising a substrate with TX and RX filter assemblies mounted thereon. One or both of the TX and RX filter assemblies comprises an RF waveguide filter assembly including a plurality of blocks of dielectric material coupled together in a side-by-side relationship. Each of the blocks of dielectric material defines at least one slit and at least one internal RF signal transmission window. One or both of the end blocks defines a step and a through-hole terminating in an opening in the step. In one embodiment, the RF duplexer waveguide filter module additionally comprises an RF antenna waveguide filter extending between and coupling the TX and RX filter assemblies to an antenna RF signal transmission line.

US Patent:

20150207193, Jul 23, 2015

Filed:

Apr 1, 2015

Appl. No.:

14/676530

Inventors:

Hugo Enrique Cuadras - Rio Rancho NM, US
Nam Phan - Rio Rancho NM, US

International Classification:

H01P 1/201
H01P 3/16

Abstract:

An RF filter assembly comprising a substrate, an RF waveguide filter mounted on the substrate and a pair of alignment/mounting/RF signal transmission pins extending from respective apertures in the substrate into respective through-holes in the RF filter. In one embodiment, the RF waveguide filter is comprised of first and second blocks of dielectric material coupled together in an abutting side-by-side relationship and the pair of through-holes are defined in the first and second blocks respectively. In one embodiment, respective RF signal transmission pads defined on the respective first and second blocks of dielectric material are abutted against respective RF signal transmission pads defined on the substrate and interconnected by an RF signal transmission line in the interior of the substrate for transmitting the RF signal between the first and second blocks of dielectric material.

US Patent:

20150084720, Mar 26, 2015

Filed:

Sep 18, 2014

Appl. No.:

14/490284

Inventors:

Reddy Vangala - Albuquerque NM, US
Nam Phan - Rio Rancho NM, US

Assignee:

CTS Corporation - Elkhart IN

International Classification:

H01P 1/209

US Classification:

333212

Abstract:

A waveguide filter comprising a base block of dielectric material defining at least first and second resonators and a bridge block seated on top of the base block and defining at least a third resonator. In one embodiment, the base block comprises first and second base blocks that have been coupled together in an end to end relationship. An external transmission line or an interior RF signal transmission window or an RF signal transmission bridge provides a cross-coupling RF signal transmission path between the first and second resonators. At least first and second interior RF signal transmission windows provide a direct RF signal transmission path between the first and third resonators and the second and third resonators respectively.