Antenna filter and electronic device including same in wireless communication system

Patent metadata

Field	Value
Publication number	US-12469942-B2
Application number	US-202218086420-A
Country	US
Kind code	B2
Filing date	Dec 21, 2022
Priority date	Jun 23, 2020
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A filter in a wireless communication system includes: a cover; a housing; a printed circuit board (PCB); a resonance plate provided between the cover and the PCB; and a plurality of resonators provided on a single layer in the resonance plate.

First claim

What is claimed is:

1 . A filter in a wireless communication system, the filter comprising:
a cover; a housing coupled with the cover, and including a first portion forming a side face of the filter and a second portion forming a bottom face of the filter, wherein the first portion of the housing includes a groove; a resonance plate disposed in an inner space of the housing, and including an edge portion and a plurality of resonators, wherein the plurality of resonators include a first resonator, a second resonator, a third resonator, and a fourth resonator, and wherein the plurality of resonators are spaced apart from each other and connected with the edge portion; a first conductive line connecting the first resonator with the second resonator; and a second conductive line connecting the first resonator with the third resonator, wherein the first resonator is disposed between the fourth resonator and the second resonator, wherein the second resonator is disposed between the first resonator and the third resonator, wherein the first resonator is capacitively connected with the fourth resonator without an inductive connection between the first resonator and the fourth resonator, wherein the second resonator is capacitively connected with the third resonator without an inductive connection between the second resonator and the third resonator, wherein the edge portion is electrically connected with a ground, and wherein the edge portion is inserted into the groove to be coupled with the housing.

2 . The filter of claim 1 , wherein the plurality of resonators are serially connected via at least one of a capacitive connection or an inductive connection, and
wherein each of the plurality of resonators is a T-shaped resonance circuit.

3 . The filter of claim 1 , wherein the resonance plate comprises the edge portion, an opening portion, and a portion corresponding to the plurality of resonators including a conductor.

4 . The filter of claim 1 , wherein the second portion of the housing, the resonance plate, and the cover are stacked in sequence in a first direction,
wherein a first air gap is formed between a first surface of the resonance plate and the cover, and wherein a second air gap is formed between a second surface of the resonance plate and the second portion.

5 . The filter of claim 1 , wherein the resonance plate comprises an input port and an output port,
wherein the input port is coupled to a first side of the housing, and wherein the output port is coupled to a second side of the housing.

6 . The filter of claim 5 , wherein the output port is connected to an antenna element of an antenna array.

7 . The filter of claim 1 , wherein the plurality of resonators comprise at least one inductive load and at least one capacitive load, and
wherein the filter is configured to pass a radio frequency (RF) signal of a specific frequency band based on an inductance value of each of the at least one inductive load and a capacitance value of each of the at least one capacitive load.

8 . The filter of claim 7 , wherein the inductance value of each of the at least one inductive load and the capacitance value of each of the at least one capacitive load are configured to form a plurality of notches within a designated range from the specific frequency band.

9 . The filter of claim 8 , wherein arrangements of the plurality of resonators are related to a size of a cross coupling between resonators which are not adjacent each other among the plurality of resonators.

10 . The filter of claim 1 , wherein the first resonator is inductively connected with the second resonator and the third resonator, and the second resonator is capacitively connected with the third resonator such that a notch for filtering a radio frequency (RF) signal of a specific frequency band is formed.

11 . A massive multiple input multiple output (MIMO) unit (MMU) device comprising:
at least one processor configured to process a signal; a plurality of filters configured to filter the signal; and an antenna array electrically connected to the plurality of filters and configured to radiate the signal, wherein a filter of the plurality of filters comprises:
a cover,
a housing coupled with the cover, and including a first portion forming a side face of the filter and a second portion forming a bottom face of the filter, wherein the first portion of the housing includes a groove,
a resonance plate disposed in an inner space of the housing, and including an edge portion and a plurality of resonators, wherein the plurality of resonators include a first resonator, a second resonator, a third resonator, and a fourth resonator, and wherein the plurality of resonators are spaced apart from each other and connected with the edge portion,
a first conductive line connecting the first resonator with the second resonator, and
a second conductive line connecting the first resonator with the third resonator,
wherein the first resonator is disposed between the fourth resonator and the second resonator, wherein the second resonator is disposed between the first resonator and the third resonator, wherein the first resonator is capacitively connected with the fourth resonator without an inductive connection between the first resonator and the fourth resonator, wherein the second resonator is capacitively connected with the third resonator without an inductive connection between the second resonator and the third resonator, wherein the edge portion is electrically connected with a ground, and wherein the edge portion is inserted into the groove to be coupled with the housing.

12 . The MMU device of claim 11 , wherein the plurality of resonators are serially connected via at least one of a capacitive connection or an inductive connection, and
wherein each of the plurality of resonators is a T-shaped resonance circuit.

13 . The MMU device of claim 11 ,
wherein the resonance plate comprises the edge portion, an opening portion, and a portion corresponding to the plurality of resonators including a conductor, and wherein the opening portion is a portion of the resonance plate other than the plurality of resonators.

14 . The MMU device of claim 11 , wherein the resonance plate includes an input port and an output port, and
wherein the output port is connected to an antenna element of the antenna array.

15 . The MMU device of claim 11 , wherein the first resonator is inductively connected with the second resonator and the third resonator, and the second resonator is capacitively connected with the third resonator such that a notch for filtering a radio frequency (RF) signal of a specific frequency band is formed.

16 . A method of manufacturing a filter in a wireless communication system, the method comprising:
providing a resonance plate including an edge portion and a plurality of resonators, wherein the plurality of resonators include a first resonator, a second resonator, a third resonator and a fourth resonator, and wherein the plurality of resonators are spaced apart from each other and connected with the edge portion; and coupling the resonance plate with a housing coupled with a cover, wherein the housing includes a first portion forming a side face of the filter and a second portion forming a bottom face of the filter, wherein the first portion of the housing includes a groove, wherein the first resonator and the second resonator are connected via a first conductive line, and the first resonator and the third resonator are connected via a second conductive line, wherein

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Jonghwa
• Koo Bonmin
• Kim Dongjoo
• Na Inho
• Jeon Danbi
• Zeong Jongwook
• Gwon Sewon
• Yoon Seunghwan

Classifications

• H01Q21/08

  the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)} · CPC title

• H01P11/007

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

• H01P7/06

  Cavity resonators · CPC title

• H01Q21/0006

  Particular feeding systems · CPC title

• H01P1/207 Primary

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