Electronic device including connector

Patent metadata

Field	Value
Publication number	US-11955706-B2
Application number	US-201917594495-A
Country	US
Kind code	B2
Filing date	Apr 25, 2019
Priority date	Apr 25, 2019
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

An electronic device according to the present invention comprises: a first multi-layer printed circuit board (PCB) including a transceiver circuit; a second multi-layer PCB including an antenna; and a connector configured to connect the first multi-layer PCB and the second multi-layer PCB to each other, wherein the first and the second multi-layer PCB include signal transmission lines configuring a vertical connection for signal transfer between different layers, and include multiple adjacent ground patterns configuring a vertical ground connection between the different boards. In order to improve the matching characteristic between the vertically connected signal transmission lines, window regions from which a metal pattern is eliminated are formed at the same positions in different layers of the first and the second multi-layer PCB between the adjacent ground patterns. Therefore, the present invention can provide the connector and the electronic device providing an optimal matching characteristic in vertically connecting the antenna and the transceiver circuit in mmWave bands.

First claim

What is claimed is:

1. An electronic device comprising:
a first multilayered printed circuit board (PCB) including a transceiver circuit;
a second multilayered PCB including antennas; and
a connector to connect the first multilayered PCB and the second multilayered PCB through a plurality of terminals,
wherein the first and second multilayered PCBs each includes signal transmission lines vertically connected for signal transmission between different layers thereof,
wherein the first and second multilayered PCBs each includes a plurality of ground patterns adjacent to one another to constitute a ground vertical-connection between different substrates, and
wherein window regions from which metal patterns are removed are formed between the adjacent ground patterns at the same position of different layers of the first and second multilayered PCBs, so as to improve a matching characteristic at the vertically connected signal transmission lines.

2. The electronic device of claim 1 , wherein the signal transmission lines vertically connect different substrates of the first or second multilayered PCB by signal vias,
wherein the windows are formed in a middle substrate disposed between the vertically connected substrates at positions corresponding to the signal vias to be larger than via pads including the signal vias, and
wherein electrical characteristics by the vertically connected signal vias are improved by the windows.

3. The electronic device of claim 2 , wherein the signal transmission line comprises:
signal pads on which signal vias configuring a vertical connection for signal transmission between the different substrates are disposed; and
a signal line connected to the signal pads, having a width narrower than a diameter of the signal pads, and extending by a predetermined length.

4. The electronic device of claim 1 , wherein ground planes are removed from regions of different substrates of the first and second multilayered PCBs corresponding to regions in which the connector is disposed, so as to eliminate a ground resonance phenomenon caused by the connector and the grounds.

5. The electronic device of claim 4 , wherein a top layer of the first multilayered PCB includes connection terminals for electrical connection with the connector and a dummy pattern for attachment of the connector,
wherein an entire bottom layer of the first multilayered PCB is configured as a ground plane, and
wherein the ground planes are removed in the same shape from a plurality of middle layers between the top layer and the bottom layer in regions corresponding to regions where the connector is disposed.

6. The electronic device of claim 4 , wherein a top layer of the second multilayered PCB includes connection terminals for electrical connection with the connector,
wherein a bottom layer of the second multilayered PCB is configured such that a ground is partially removed from both sides thereof,
wherein the ground plane is removed from a middle layer between the top layer and the bottom layer in a region corresponding to a region where the connector is disposed, and
wherein a dummy pattern for the attachment of the connector is not provided on a top of the second multilayered PCB.

7. The electronic device of claim 1 , wherein the ground patterns each comprises:
ground pads on which ground vias for the ground vertical-connection are disposed; and
ground lines connecting the ground pads, and
wherein the ground patterns are formed on the same position of different layers of the first and second multilayered PCBs.

8. The electronic device of claim 7 , wherein the ground pattern is provided in plurality to correspond to a plurality of ground terminals of the connector,
wherein the signal transmission line is disposed between the plurality of ground patterns, and
wherein a length of a signal line of the signal transmission line is the same as a length of a ground pad of the ground pattern.

9. The electronic device of claim 7 , wherein the ground pad includes first and second circular ground pads each having the same circular shape as that of the ground via, and
wherein each of the first and second circular ground pads is connected to the ground line having a width narrower than a diameter of the ground pad.

10. The electronic device of claim 1 , further comprising a transceiver circuit to receive signals from the antennas through different signal terminals of the connector or transmit signals to the antennas through the different signal terminals of the connector.

11. The electronic device of claim 10 , further comprising a baseband processor to control a first reception signal and a second reception signal received from the antennas to the transceiver circuit through different signal terminals of the connector.

12. The electronic device of claim 11 , wherein each of a first connecting portion connected to the first multilayered PCB and a second connecting portion connected to the second multilayered PCB comprises eight terminals, and
wherein the baseband processor controls the transceiver circuit to perform MIMO through a first array antenna including four antennas connected four of the eight terminals of the second connecting portion and a second array antenna including four antennas connected to remaining four terminals of the second connecting portion.

13. A connector device comprising:
a first connecting portion having a plurality of terminals to be connected to a first multilayered printed circuit board (PCB); and
a second connecting portion having a plurality of terminals to be connected to a second multilayered PCB,
wherein signal transmission lines of the first multilayered PCB and the second multilayered PCB are vertically connected to each other by the first connecting portion and the second connecting portion, to transmit Radio Frequency (RF) signals, and
wherein ground planes are removed from regions of different substrates of the first and second multilayered PCBs corresponding to regions where the connector is disposed, to eliminate a ground resonance phenomenon caused due to the connector and the grounds.

14. The connector device of claim 13 , wherein a top layer of the first multilayered PCB includes connection terminals for electrical connection with the connector and a dummy pattern for attachment of the connector,
wherein an entire bottom layer of the first multilayered PCB is configured as a ground plane, and
wherein the ground planes are removed in the same shape from regions corresponding to regions where the connector is disposed in a plurality of middle layers between the top layer and the bottom layer.

15. The connector device of claim 13 , wherein a top layer of the second multilayered PCB includes connection terminals for electrical connection with the connector,
wherein a bottom layer of the second multilayered PCB is configured such that a ground is partially removed from both sides thereof,
wherein the ground plane is removed from a region corresponding to a region where the connector is disposed in a middle layer between the top layer and the bottom layer, and
wherein a dummy pattern for the attachment of the connector is not provided on a top of the second multilayered PCB.

16. The connector device of claim 13 , wherein the first and second multilayered PCBs each includes signal transmission lines vertically connected for signal transmission between different layers thereof,
wherein the first and second multilayered PCBs each includes a plurality of ground patterns adjacent to one another to constitute a ground vertical-connection between differe

Assignees

• Lg Electronics Inc

Inventors

• Ryu Seungwoo
• Lee Joohee
• Jung Junyoung

Classifications

• H01Q1/48 Primary

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q21/06

  Arrays of individually energised antenna units similarly polarised and spaced apart · CPC title

• H05K1/0225 Primary

  Single or multiple openings in a shielding, ground or power plane (H05K1/0227 takes precedence) · CPC title

• H05K1/0251

  related to vias or transitions between vias and transmission lines · CPC title

• H05K1/181

  associated with surface mounted components · CPC title