Multi-band RF monoblock filter configured to have an antenna input/output located for separating first and second filters from a third filter

Patent metadata

Field	Value
Publication number	US-11404757-B2
Application number	US-202016900877-A
Country	US
Kind code	B2
Filing date	Jun 13, 2020
Priority date	Jun 17, 2015
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

Abstract

A multi-band RF monoblock filter including at least three RF signal filters defined in the monoblock of dielectric material by resonators defined in part by through-holes extending through the block. In one embodiment, two of the RF signal filters are in a co-linear and side-by-side relationship and the third filter is in a parallel and side-by side relationship with one of the two other RF signal filters. A pattern of conductive material defines two end and one interior RF signal input/output on the block top surface. The end RF signal input/outputs are located at opposite ends of the block and the central RF signal input/output is located between the two co-linear and side-by-side RF filters. An RF signal is transmitted through the one end RF signal input/output, the two parallel and side-by-side RF signal filters, and the central RF signal input/output and also through the other end RF signal input/output, one of the co-linear and side-by-side RF filters, and the central RF signal input/output.

First claim

I claim:

1. An RF dielectric monoblock filter for the transmission of an RF signal comprising:
a block of dielectric material including top, bottom, and side exterior surfaces including opposed longitudinal side exterior surfaces;
a plurality of resonators defining a plurality of RF signal filters including a first pair of RF signal filters located on the block of dielectric material between the first and second opposed longitudinal side exterior surfaces in a parallel and spaced relationship relative to each other and the first and second opposed longitudinal side exterior surfaces, and a third RF signal filter located on the block of dielectric material in a side-by-side and spaced relationship relative to the first pair of RF signal filters; and
at least first, second, and third RF signal input/outputs for the transmission of the RF signal through the plurality of RF signal filters, the first and third RF signal input/outputs comprising Tx or Rx RF signal input/outputs at opposed ends of the block of dielectric material and the second RF signal input/output comprising an antenna RF signal input/output located between the first and third RF signal input/outputs, the first pair of RF signal filters located between the first and second RF signal input/outputs and the third RF signal filter located between the second and third RF signal input/outputs, the RF signal being transmitted between the first and second RF signal input/outputs and through the first pair of RF signal filters and between the second and third RF signal input/outputs and through the third RF signal filter.

2. The RF dielectric monoblock filter of claim 1 , wherein the first pair of RF signal filters are separated by an elongate slot in the block of dielectric material that extends in a relationship spaced and parallel to the first pair of RF signal filters and the opposed longitudinal side exterior surfaces.

3. The RF dielectric monoblock filter of claim 1 , wherein the plurality of resonators are defined by a plurality of spaced-apart through-holes extending through and terminating in a plurality of apertures defined in the top and bottom exterior surfaces of the block of dielectric material.

4. The RF dielectric monoblock filter of claim 1 , wherein the third RF signal filter extends in a relationship co-linear with one of the RF signal filters of the first pair of RF signal filters.

5. An RF dielectric monoblock filter for the transmission of an RF signal comprising:
a block of dielectric material including top, bottom, and side exterior surfaces including opposed longitudinal side exterior surfaces;
a plurality of resonators defining at least first, second, and third RF signal filters; and
a plurality of RF signal input/outputs, for the transmission of the RF signal through the first, second, and third RF signal filters, including a first antenna RF signal input/output positioned on the block of dielectric material in a relationship with at least the first and second RF signal filters located on one side of the first antenna RF signal input/output and the third RF signal filter located on an opposed side of the first antenna RF signal input/output.

6. The RF dielectric monoblock filter of claim 5 , wherein the third RF signal filter extends in a relationship co-linear with the first RF signal filter.

7. The RF dielectric monoblock filter of claim 5 , wherein the first, second, and third RF signal filters are defined by respective sets of spaced-apart through-holes extending through and terminating in a plurality of apertures defined in the top and bottom exterior surfaces of the block of dielectric material.

8. The RF dielectric monoblock filter of claim 7 , comprising second and third RF signal input/outputs at opposed ends of the block of dielectric material.

9. The RF dielectric monoblock filter of claim 5 , wherein the first and second RF signal filters are positioned in a parallel relationship and separated by an elongate slot defined in the block of dielectric material.

10. An RF dielectric monoblock filter for the transmission of an RF signal comprising:
a block of dielectric material including top, bottom, and side exterior surfaces including opposed longitudinal side exterior surfaces;
a plurality of resonators defining at least first, second, and third RF signal filters;
an elongate slot between the first and second RF signal filters; and
a plurality of RF signal input/outputs, for the transmission of the RF signal through the first, second, and third RF signal filters, including first, second, and third RF signal input/outputs, the first and third RF signal input/outputs being located at opposed ends of the block of dielectric material and comprising Tx or Rx RF signal input/outputs and the second RF signal input/output comprising an antenna RF signal input/output located between the first and third RF signal input/outputs, the first and second RF signal filters being located between the first and second RF signal input/outputs and the third RF signal filter being located between the second and third RF signal input/outputs.

11. The RF dielectric monoblock filter of claim 10 , wherein the first and second RF signal filters are positioned in a parallel and spaced relationship relative to each other and the elongate slot, the third RF signal filter positioned in a side-by-side and spaced relationship relative to the first and second RF signal filters.

12. The RF dielectric monoblock filter of claim 10 , wherein the first, second, and third RF signal filters are defined by respective sets of spaced-apart through-holes extending through and terminating in a plurality of apertures defined in the top and bottom exterior surfaces of the block of dielectric material.

Assignees

• Cts Corp

Inventors

• Baum Fred W

Classifications

• H01P1/2136 Primary

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

• H01P1/2056 Primary

  Comb filters or interdigital filters with metallised resonator holes in a dielectric block · CPC title

• H01P1/2002

  Dielectric waveguide filters (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence) · CPC title

• H01P3/08

  Microstrips; Strip lines · CPC title

• H01P7/06

  Cavity resonators · CPC title