RF module for antenna and antenna apparatus comprising same

Patent metadata

Field	Value
Publication number	US-12476343-B2
Application number	US-202318215747-A
Country	US
Kind code	B2
Filing date	Jun 28, 2023
Priority date	Dec 31, 2020
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

Proposed are an antenna RF module and an antenna apparatus including the antenna RF modules. The antenna RF module includes an amplification unit module which is arranged between a main board and an RF filter and into which at least one analog amplification element is built. The amplification unit module includes an amplification unit body, an amplification unit board seated inside the amplification unit body, a front end portion of an edge of the amplification unit board being connected to the RF filter for signal transmission and a rear end portion of the edge thereof being connected to the main board for signal transmission, an amplification unit cover provided in such a manner as to cover the amplification unit board, and a vapor chamber positioned between the amplification unit body and the amplification unit board or between the amplification unit cover and the amplification unit board and serving as a medium for transferring heat generated from analog amplification elements mounted on the amplification unit board.

First claim

The invention claimed is:

1 . An antenna RF module comprising:
an RF filter arranged on a front surface of a main board; a radiation element module arranged on a front surface of the RF filter; and an amplification unit module arranged between the main body and the RF filter, at least one analog amplification element being built into the amplification unit module, wherein the amplification unit module comprises: an amplification unit body having a board seating space that is open at one side or the other side in a width direction; an amplification unit board seated inside the amplification unit body, a front end portion of an edge of the amplification unit board being connected to the RF filter for signal transmission and a rear end portion of the edge thereof being connected to the main board for signal transmission; an amplification unit cover provided in such a manner as to cover the amplification unit board; and a vapor chamber positioned between the amplification unit body and the amplification unit board or between the amplification unit cover and the amplification unit board and serving as a medium for transferring heat generated from analog amplification elements mounted on the amplification unit board.

2 . The antenna RF module of claim 1 , wherein an element passing-through opening through which one or several of the analog amplification elements mounted on the amplification unit board pass is formed in the vapor chamber.

3 . The antenna RF module of claim 2 , wherein the vapor chamber is flatly formed in such a manner that one surface thereof is brought into surface contact, for heat transfer, with a flat inner surface of the amplification unit body or the a flat inner surface of the amplification unit cover, and an element shape-fitting groove is formed in the other surface of the vapor chamber in such a manner as to increase an area of the vapor chamber with which the analog amplification elements mounted on an opposite surface of the amplification unit board and protruding therefrom are brought in a shape-fitted manner into surface contact for heat transfer.

4 . The antenna RF module of claim 3 , wherein a PA element and an LNA element, as the analog amplification elements, that realize a 2T2R dual antenna are arranged to be mounted on a surface, facing the vapor chamber, of both surfaces of the amplification unit board, the PA element that has a relatively large of heat generated is arranged on the element passing-through opening in the vapor chamber by passing therethrough, and the LNA element that has a relatively small of heat generated is shape-fitted into an element shape-fitting groove in the vapor chamber.

5 . The antenna RF module of claim 3 , wherein a PA element and an LNA element, as the analog amplification elements, that realize an 1T1R antenna are arranged to be mounted on one of both surfaces of the amplification unit board, a PA element and an LNA element, as the analog amplification elements, that realize an 1T1R antenna are arranged to be mounted on the other one of the both surfaces of the amplification unit board, and the vapor chamber is arranged between an inner surface of the amplification unit body and one surface of the amplification unit board and between an inner surface of the amplification unit cover and the other surface of the amplification unit board.

6 . The antenna RF module of claim 1 , further comprising:
at least one reflector grill pin arranged between the RF filter and the radiation element module and grounding (GND) the radiation element module, outside air being introduced from in front of the RF filter to in back of the RF filter or being discharged from in back of the RF filter to in front of the RF filter through the at least one reflector grill pin; and a radome cover combined with the front surface of the RF filter and protecting the radiation element module from the outside, wherein the at least one reflector grill pin is integrally formed on the RF filter.

7 . The antenna RF module of claim 6 , wherein the RF filter and the reflector grill pins are integrally manufactured of a molding material having a metal component, using a die-casting molding technique.

8 . The antenna RF module of claim 6 , wherein one or several of the reflector grill pins are formed to extend in such a manner as to overlap one or several reflector grill pins, respectively, that are formed on another RF filter that is adjacent thereto.

9 . The antenna RF module of claim 1 , wherein the RF filter comprises:
a filter body in which a multiplicity of cavities are formed in such a manner as to be open at front sides thereof; and a arranged inside each of the resonance bar multiplicity of cavities, wherein the reflector grill pins are formed along an edge of a front end portion of the filter body in such a manner as to extend upward, downward, leftward, and rightward from the edge, respectively, and to be spaced a predetermined distance apart.

10 . The antenna RF module of claim 9 , wherein the reflector grill pins perform a function of a reflector, along with a filter outer panel arranged in such a manner as to close a front surface of the filter body.

11 . The antenna RF module of claim 9 , wherein a distance between the reflector grill pins is set considering a length of the radiation element included in the radiation element module.

12 . An antenna apparatus comprising:
a main board, at least one digital element being mounted on a front surface or rear surface of the main board; a casing-shaped rear housing formed to have an installation space in which the main board is installed, the installation space being open at the front side; a front housing arranged to close the installation space in the rear housing and separate the installation space in the rear housing and an outside space; and a plurality of antenna RF modules arranged in front of the front housing and connected to the main board through an electrical signal line, wherein each of the plurality of antenna RF modules comprises: an RF filter arranged on a front surface of a main board; a radiation element module arranged on a front surface of the RF filter; and an amplification unit module arranged between the main body and the RF filter, at least one analog amplification element being built into the amplification unit module, wherein the amplification unit module comprises: an amplification unit body having a board seating space that is open at one side or the other side in a width direction; an amplification unit board seated inside the amplification unit body, a front end portion of an edge of the amplification unit board being connected to the RF filter for signal transmission and a rear end portion of the edge thereof being connected to the main board for signal transmission; an amplification unit cover provided in such a manner as to cover the amplification unit board; and a vapor chamber positioned between the amplification unit body and the amplification unit board or between the amplification unit cover and the amplification unit board and serving as a medium for transferring heat generated from analog amplification elements mounted on the amplification unit board.

Assignees

• Kmw Inc

Inventors

• Kim Duk Yong
• Moon Young Chan
• Shim Joon Hyong
• So Sung Hwan
• Jeong Bae Mook
• Yun Min Seon
• Ji Kyo Sung
• Ryu Chi Back
• Jang Sung Ho
• Kim Jae Hong
• Choi Oh Seog
• Seo Yong Won

Classifications

• H01Q19/10

  using reflecting surfaces · CPC title

• H01Q1/42

  Housings not intimately mechanically associated with radiating elements, e.g. radome · CPC title

• H01Q1/246

  specially adapted for base stations · CPC title

• H01Q21/24

  Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} · CPC title

• H01Q21/062

  using dipole aerials; (H01Q21/067, H01Q21/068 take precedence) · CPC title