RF module for antenna and antenna apparatus comprising same

Patent metadata

Field	Value
Publication number	US-12424764-B2
Application number	US-202318207575-A
Country	US
Kind code	B2
Filing date	Jun 8, 2023
Priority date	Dec 8, 2020
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

Proposed are an antenna RF module and an antenna apparatus including the antenna RF modules. The antenna RF module includes 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, 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. The antenna RF module provides the advantage of greatly improving overall performance in heat dissipation.

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 element module comprising:
an amplification unit body arranged between the main board and the RF filer and 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, a rear end portion of the edge thereof being connected to the main board for signal transmission, and at least one analog amplification element being mounted on one surface or the other surface thereof; and
an amplification unit cover provided in such a manner as to cover the amplification unit board,
wherein heat generated from the at least one analog amplification element on the amplification unit board is distributively dissipated to outside air in front of one side or the other side, in a width direction, of the amplification element module through a multiplicity of amplification-unit heat sink pins integrally formed on an outer surface of the amplification unit body and through a multiplicity of amplification-unit-cover heat sink pins integrally formed on an outer surface of the amplification unit cover.

2. The antenna RF module of claim 1 , wherein one of PAs, as the analog amplification elements, that realize a 2 T 2 R antenna is arranged to be mounted on one surface of both surfaces of the amplification unit board, and the other one of the PAs, as the analog amplification elements, that realize the 2 T 2 R antenna is arranged to be mounted on the other surface of the both surfaces of the amplification unit board.

3. 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.

4. The antenna RF module of claim 3 , 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.

5. The antenna RF module of claim 3 , 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.

6. 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 resonance bar arranged inside each of the multiplicity of cavities, and
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.

7. The antenna RF module of claim 6 , 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.

8. The antenna RF module of claim 6 , wherein a distance between the reflector grill pins is set considering a length of the radiation element included in the radiation element module.

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;
a resonance bar arranged inside each of the multiplicity of cavities; and
a filter outer panel arranged to close a front surface of the filter body, and
wherein the radiation element module is combined with the filter body by being seated therein in such a manner as to cover a front surface of the filter outer panel.

10. The antenna RF module of claim 9 , wherein a multiplicity of hook combination portions are formed on a portion of an edge of a radome cover, and wherein the radome cover is hook-combined with the filter body by the multiplicity of hook combination portions being combined with a stepped portion of the filter body.

11. The antenna RF module of claim 10 , wherein the radome cover is combined with the filter body while blocking the radiation element module from being viewed from the outside.

12. The antenna RF module of claim 1 , wherein the amplification element module receives a signal from the main board and a signal from the RF filter, amplifies these signals by a predetermined value, and outputs the resulting signals.

13. The antenna RF module of claim 1 , wherein the amplification unit board is combined with the RF filter in a feed through-pin coupling manner, with a through-pin terminal in between, and is combined with the main board in a socket-pin coupling manner.

14. The antenna RF module of claim 13 , wherein at least one male socket for the combination with the main board in a socket-pin coupling manner is provided on the amplification unit board.

15. The antenna RF module of claim 1 , wherein the RF filter and the radiation element module are combined with each other in a feed through-pin coupling manner, with a through-pin in between.

16. 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 open 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 the main board;
a radiation element module arranged on a front surface of the RF filter; and
an amplification element module comprising:
an amplification unit body arranged between the main board and the RF filer and 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, a rear end portion of the edge thereof being connected to the main board for signal transmission, and at least one analog amplification element being mounted on one surface or the other surface thereof; and
an amplification unit cover provided in such a manner as to cover the amplification unit board, and
wherein heat generated from the at least one analog amplification element on the amplification unit board is distributively dissipated to outside air in front of one side or the other side, in a width direction, of the amplification element module through a multiplicity of amplification-unit heat sink pins integrally formed on an outer surface of the amp

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

• H03F2200/451

  the amplifier being a radio frequency amplifier · CPC title

• H03F2200/447

  the amplifier being protected to temperature influence · CPC title

• H03F3/19

  with semiconductor devices only · CPC title

• H03F1/30

  Modifications of amplifiers to reduce influence of variations of temperature or supply voltage {or other physical parameters (in differential amplifiers H03F3/45479)} · CPC title

• H01Q23/00

  Antennas with active circuits or circuit elements integrated within them or attached to them · CPC title