Housing structure for maintaining alignment between ceramic sections of a waveguide filter

Patent metadata

Field	Value
Publication number	US-2022416383-A1
Application number	US-202117362151-A
Country	US
Kind code	A1
Filing date	Jun 29, 2021
Priority date	Jun 29, 2021
Publication date	Dec 29, 2022
Grant date	—

Abstract

Apparatuses, methods, and systems for a housing structure for maintaining alignment between ceramic sections of a bandpass filter are disclosed. One housing structure includes an L-shaped outer structure, a plurality of flexure portions, wherein at least one of flexure portion extends from an end portion of each of extended arms of the L-shaped outer structure, wherein each flexure portion extends inward perpendicular to each of the extended end portion, and a plurality of reference datums, wherein at least one reference datum is located between an L-joint of the L-shaped outer structure, and a one of the flexure portions. The housing structure operates to receive a plurality of sections of a waveguide filter, wherein each section includes a plurality of planar surfaces, wherein the datums and the flexure portions are operative to maintain alignment of the sections of the waveguide filter relative to each other.

First claim

1 . A housing structure, comprising
an L-shaped outer structure; a plurality of flexure portions, wherein at least one of the plurality of flexure portions extends from an end portion of extended arms of the L-shaped outer structure, wherein the plurality of flexure portions extend inward perpendicular to the end portion; a plurality of reference datums, wherein at least one reference datum is located between an L-joint of the L-shaped outer structure, and a one of the plurality of flexure portions; and the housing structure operative to receive a plurality of sections of a waveguide filter, wherein the plurality of sections include a plurality of planar surfaces; wherein the datums and the plurality of flexure portions are operative to maintain alignment of the plurality of sections of the waveguide filter relative to one another when the plurality of sections of the waveguide filter are inserted within the housing structure.

2 . The housing structure of claim 1 , wherein the plurality of sections includes a first dimension aligned with a major axis, and a second dimension and a third dimension that are aligned perpendicular to the major axis and one another;
wherein the first dimension is shorter than the second dimension and the third dimension.

3 . The housing structure of claim 1 , wherein the housing structure further comprises tuning screws located on an outer surface of the L-shaped outer structure, wherein the outer surface is parallel and opposite to a surface of the L-shaped outer structure in which one of the datums is located.

4 . The housing structure of claim 3 , wherein the tuning screws operate to adjust the alignment between the plurality of sections of the waveguide filter.

5 . The housing structure of claim 3 , wherein tuning the tuning screws operates to adjust a frequency response of the waveguide filter.

6 . The housing structure of claim 1 , wherein the datums are aligned to be offset from corner cut-outs of the sections of the waveguide filter.

7 . The housing structure of claim 1 , wherein a one of the datums is oriented to be 90 degrees rotated relative to one other of the datums.

8 . The housing structure of claim 1 , wherein a one of the plurality of flexure portions is oriented to be 90 degrees rotated relative to one other of the plurality of flexure portions.

9 . The housing structure of claim 1 , wherein a one of the datums is oriented to be 180 degrees rotated relative a one of the plurality of flexure portions.

10 . The housing structure of claim 1 , wherein a flexure, of the plurality of flexure portions, constrains the plurality of sections of the waveguide filter to a single reference datum.

11 . The housing structure of claim 10 , wherein a deflection property of the plurality of flexures is tuned based on a cross-section of the flexure, and a flexure length.

12 . The housing structure of claim 10 , wherein a spring force of the plurality of flexures is selected to provide enough frictional force to prevent the plurality of sections of the waveguide filter from slipping along a surface of the housing structure, while allowing for installation of the plurality of sections during manufacturing.

13 . The housing structure of claim 10 , wherein a spring force of the plurality of flexures is selected to provide enough frictional force to prevent the plurality of sections of the waveguide filter from slipping along a surface of the housing structure when the housing structure is subjected to a temperature greater than a selected value.

14 . The housing structure of claim 1 , wherein an end of the extended arms of the L-shaped outer structure comprises a plurality of parallel flexure portions, wherein a one of the plurality of flexure portions corresponds with the plurality of sections of the waveguide filter.

15 . The housing structure of claim 14 , wherein a single datum corresponds with the plurality of sections of the waveguide filter.

16 . The housing structure of claim 1 , wherein the housing structure includes an aluminum extruded housing.

17 . (canceled)

18 . The housing structure of claim 1 , wherein the housing structure is further operative to receive another plurality of sections of a plurality of waveguide filters.

19 . The housing structure of claim 18 , wherein one of the plurality of waveguide filters operates to receive and filter received wireless signals of a remote radio unit (RRU), and another of the plurality of waveguide filters operates to filter transmit wireless signals of the RRU.

20 . A remote radio unit (RRU) comprising:
one or more antennas; a downlink bandpass filter and an uplink filter, wherein both the downlink bandpass filter and the uplink filter are connected to the one or more antennas; wherein at least one of the downlink bandpass filter or the uplink filter includes a housing structure, the housing structure comprising: an L-shaped outer structure; a plurality of flexure portions, wherein at least one of the plurality of flexure portions extends from an end portion of extended arms of the L-shaped outer structure, wherein the plurality of flexure portions extend inward perpendicular to the end portion; a plurality of reference datums, wherein at least one reference datum is located between an L-joint of the L-shaped outer structure, and a one of the plurality of flexure portions; and the housing structure operative to receive a plurality of sections of a waveguide filter, wherein the plurality of sections includes a plurality of planar surfaces; wherein the datums and the plurality of flexure portions are operative to maintain alignment of the plurality of sections of the waveguide filter relative to one another when the plurality of sections of the waveguide filter are inserted within the housing structure.

Assignees

• Meta Platforms Inc

Inventors

• Tabatabai Farbod
• Alijagic Haris

Classifications

• H01P11/007

  Manufacturing frequency-selective devices (resonators H01P11/008) · CPC title

• H01P1/2002 Primary

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

• H01P3/16

  Dielectric waveguides, i.e. without a longitudinal conductor · CPC title