RF dielectric waveguide duplexer filter module

Patent metadata

Field	Value
Publication number	US-11081769-B2
Application number	US-201916685739-A
Country	US
Kind code	B2
Filing date	Nov 15, 2019
Priority date	Apr 9, 2015
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

An RF dielectric waveguide duplexer filter module with antenna and lower and upper Tx and Rx signal transmission blocks of dielectric material attached together in a side-by-side and stacked relationship. The blocks are covered with conductive material. Antenna and Tx and Rx input/outputs are defined at opposite ends of the filter module. RF signal transmission windows define direct coupling RF signal transmission paths between the antenna and the Tx and Rx blocks and between the lower and upper Tx and Rx blocks. One or more bridges of dielectric material on the lower Tx and Rx blocks define inductive cross-coupling Tx and Rx signal transmission paths. The Tx signal is transmitted only in the direction of the antenna block or between the upper and lower Tx blocks. The Rx signal is transmitted only in the direction of the Rx RF signal input/output or between the upper and lower Rx blocks.

First claim

What is claimed is:

1. An RF dielectric waveguide filter module for the transmission of RF signals comprising at least:
respective separate first and second blocks of dielectric material each including respective exterior surfaces covered with a layer of conductive material and defining respective Tx and RX signal transmission blocks;
the first and/or second blocks each defining one or more resonators;
the first and second blocks each including an RF signal input/output;
an RF signal antenna block of dielectric material attached to the first and second blocks of dielectric material and including exterior surfaces covered with a layer of conductive material; and
a plurality of RF signal transmission windows in the layer of conductive material of the first and second blocks of dielectric material and the RF signal antenna block of dielectric material respectively defining RF signal transmission coupling paths between the RF signal antenna block and the first and second blocks.

2. An RF dielectric waveguide filter module for the transmission of RF signals comprising at least:
respective separate first and second blocks of dielectric material attached together along respective exterior surfaces thereof;
the first and/or second blocks each defining one or more resonators;
a layer of conductive material covering the exterior surfaces of each of the respective first and second blocks;
one or more RF signal transmission windows in the layer of conductive material of the first and second blocks of dielectric material defining RF signal transmission coupling paths between the first and second blocks; and
respective separate third and fourth blocks of dielectric material attached together along respective exterior surfaces thereof;
the third and/or fourth blocks each defining one or more resonators;
a layer of conductive material covering the exterior surfaces of each of the respective third and fourth blocks; and
one or more RF signal transmission windows in the layer of conductive material of the third and fourth blocks of dielectric material defining RF signal transmission coupling paths between the third and fourth blocks.

3. The RF dielectric waveguide filter module of claim 2 , wherein the one or more RF signal transmission windows comprise regions of the exterior surfaces of the first and second blocks of dielectric material which are devoid of conductive material.

4. The RF dielectric waveguide filter module of claim 2 , further comprising an RF signal input/output on the first block.

5. The RF dielectric waveguide filter module of claim 4 , further comprising a step in the first block.

6. The RF dielectric waveguide filter module of claim 5 , wherein the RF signal input/output is located in the step in the first block.

7. The RF dielectric waveguide filter module of claim 2 , wherein the first and/or second blocks of dielectric material include at least a first aperture separating the first and/or second blocks of dielectric material into and defining first and second resonators in the first and/or second blocks of dielectric material.

8. The RF dielectric waveguide filter module of claim 1 , wherein the third and/or fourth blocks of dielectric material include at least a first aperture separating the third and/or fourth blocks of dielectric material into and defining first and second resonators in the third and/or fourth blocks of dielectric material.

9. The RF dielectric waveguide filter module of claim 8 , wherein the one or more RF signal transmission windows comprise regions of the exterior surfaces of the third and fourth blocks of dielectric material which are devoid of conductive material.

10. The RF dielectric waveguide filter module of claim 9 , further comprising an RF signal input/output in the third block.

11. The RF dielectric waveguide filter module of claim 10 , further comprising a step in the third block, the RF signal input/output being located in the step.

12. The RF dielectric waveguide filter module of claim 11 , wherein the first, second, third, and fourth blocks are attached together in a relationship with the second and fourth blocks stacked on the first and third blocks respectively, and the first and third blocks attached in a side-by-side relationship.

13. The RF dielectric waveguide filter module of claim 12 , wherein the first and second blocks define respective Tx signal transmission blocks and the third and fourth blocks defined respective Rx signal transmission blocks, and further comprising a separate antenna RF signal transmission block of dielectric material attached to the first and third blocks of dielectric material and including exterior surfaces covered with a layer of conductive material and one or more RF signal transmission windows in the layer of conductive material defining RF signal transmission paths between the antenna block and the first and third.

Assignees

• Cts Corp

Inventors

• Vangala Reddy

Classifications

• H01P1/2088

  Integrated in a substrate · CPC title

• H01P1/2138 Primary

  using hollow waveguide filters (H01P1/2131 takes precedence) · CPC title

• H01P1/2136

  using comb or interdigital filters; using cascaded coaxial cavities (H01P1/2131, H01P1/2135 take precedence) · CPC title

• H04L5/1461

  Suppression of signals in the return path, i.e. bidirectional control circuits · CPC title

• H01P7/10

  Dielectric resonators · CPC title