Multi-band RF monoblock filter having first and third filters in a co-linear relationship and first and second filters in a side-by-side relationship

Patent metadata

Field	Value
Publication number	US-10027007-B2
Application number	US-201615182795-A
Country	US
Kind code	B2
Filing date	Jun 15, 2016
Priority date	Jun 17, 2015
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

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. A multi-band RF dielectric monoblock filter for the transmission of an RF signal comprising:
a block of dielectric material including top, bottom, and side exterior surfaces;
at least first, second, and third sets of through-holes defining at least first, second, and third sets of resonators and at least first, second, and third RF signal transmission filters, each of the through-holes defining a respective interior surface and said respective interior surface extending through the block of dielectric material and terminating in respective openings in the top and bottom surfaces of the block of dielectric material;
a pattern of conductive material on the top, bottom, and side exterior surfaces of the block of dielectric material and on the respective interior surface of the through-holes including respective regions of conductive material on the top exterior surface surrounding the respective openings defined by the at least first, second, and third sets of through-holes respectively;
the pattern of conductive material including first, second, and third strips of conductive material defining first, second, and third RF signal input/output transmission lines, the first and second RF signal input/output transmission lines being respectively located at opposite ends of the first and second RF signal transmission filters for the transmission of the RF signal through the first RF signal input/output transmission line, the first and second filters, and the second RF signal input/output transmission line, the second and third RF signal input/output transmission lines being respectively located at opposite ends of the third RF signal transmission filter for the transmission of the RF signal through the second RF signal input/output transmission line, the third RF signal filter, and the third RF signal input/output transmission line; and
the first and third RF signal transmission filters are adapted for the transmission of Tx and Rx signals respectively, the second RF signal transmission filter being adapted for the transmission of Tx or Rx signals respectively.

2. The multi-band RF dielectric monoblock filter of claim 1 , wherein the first and third RF signal transmission filters are oriented in a co-linear and side-by-side relationship relative to each other and the first and second RF signal transmission filters are oriented in a parallel and side-by-side relationship relative to each other.

3. The multi-band RF dielectric monoblock filter of claim 2 , wherein the first and second RF signal transmission filters are separated by an elongate slot extending in a relationship spaced and parallel to the first and second RF signal transmission filters.

4. A multi-band RF dielectric monoblock filter comprising:
a block of dielectric material including top, bottom, and side exterior surfaces;
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;
two of the at least three RF signal filters extending in a co-linear and side-by-side relationship and the other of the at least three RF filters being oriented in a parallel and side-by side relationship with one of the two RF signal filters;
a pattern of conductive material on the top surface defines a pair of end RF signal input/output transmission lines and one interior RF signal input/output transmission line, the pair of end RF signal input/output transmission lines are located at opposite ends of the block and the interior RF signal input/output transmission line is located between the two co-linear and side-by-side RF filters for the transmission of the RF signal through the one end RF signal input/output transmission line, the two parallel and side-by-side RF signal filters, and the interior RF signal input/output transmission line and also through the other end RF signal input/output transmission line, one of the co-linear and side-by-side RF filters, and the central RF signal input/output transmission line; and
one of the two of the at least three RF signal filters and the other of the at least three RF signal filters adapted for the transmission of Tx and Rx signals, the other of the two of the at least three RF signal filters adapted for the transmission of Tx or Rx signals.

5. The multi-band RF dielectric monoblock filter of claim 4 , wherein the two of the RF signal filters are separated by an elongate slot extending in a relationship spaced and parallel to the two RF signal filters.

6. A multi-band RF dielectric monoblock filter for the transmission of an RF signal comprising:
a block of dielectric material including top, bottom, and side exterior surfaces with a pattern of conductive material;
at least first, second, and third RF signal filters defined in the block of dielectric material, each of the at least first, second, and third RF signal filters comprising a plurality of through-holes and the pattern of conductive material in combination defining a plurality of resonators, each of the through-holes extending through the interior of the block of dielectric material and terminating in respective openings in the top and bottom exterior surfaces of the block of dielectric material;
the first and third RF signal filters being oriented in a co-linear and side-by-side relationship relative to each other and the first and second RF signal filters being oriented in a parallel and side-by side relationship relative to each other;
first, second, and third RF signal input/output transmission lines defined on the top surface of the block of dielectric material by the pattern of conductive material, the first and second RF signal input/output transmission lines being respectively located on opposite sides of the first and second RF signal filters for the transmission of the RF signal through the first RF signal input/output transmission line, the first and second filters, and the second RF signal input/output transmission line and the second and third RF signal input/output transmission lines being respectively located on opposite sides of the third RF signal filter for the transmission of the RF signal through the second RF signal input/output transmission line, the third RF signal filter, and the third RF signal input/output transmission line; and
the first and third RF signal transmission filters are adapted for the transmission of Tx and Rx signals respectively, the second RF signal transmission filter being adapted for the transmission of Tx or Rx signals respectively.

7. The multi-band RF dielectric monoblock filter of claim 6 , wherein the first and second RF signal transmission filters are separated by an elongate slot extending in a relationship spaced and parallel to the first and second RF signal transmission filters.

Assignees

• Cts Corp

Inventors

• Baum Fred W

Classifications

• H01P3/08

  Microstrips; Strip lines · CPC title

• H01P1/2056 Primary

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

• H01P7/06

  Cavity resonators · CPC title

• H01P1/2136 Primary

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

• H01P1/2002

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