Flexible transmission device and communication device using the same

• US 9,123,980 B2
• Filed: 07/15/2014
• Issued: 09/01/2015
• Est. Priority Date: 06/20/2012
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Wu, Min-Chung, Lo, Shao-Chin
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US14/331,231
• Publication Number:
  US 20140320380A1
• Time in Patent Office: 413 Days
• Field of Search: 343/700.MS, 343/702, 343/767, 343/846
• US Class Current: 1/1
• CPC Class Codes: H01P 3/003 Coplanar lines
• CPC Class Codes: H05K 1/0221 Coaxially shielded signal lines comprising a continuous shielding layer partially or wholly surrounding the signal lines
• CPC Class Codes: H05K 1/0393 Flexible materials H05K1/038 takes precedence; specific organic compositions are classified in H05K1/0313 and subgroups

Abstract

A flexible transmission device, for transmitting radio-frequency (RF) signals between a first communication module and a second communication module in a communication device, comprising a flexible substrate; a first metal sheet, formed on a plane of the flexible substrate and coupled between ground terminals of the first communication module and the second communication module; and a second metal sheet, formed on a plane of the flexible substrate different from the first metal sheet, and coupled between signal terminals of the first communication module and the second communication module, for transmitting the RF signals.

Claims

1. A flexible transmission device, for transmitting radio-frequency (RF) signals between a first communication module and a second communication module in a communication device, comprising:

a flexible substrate;

a first metal sheet, formed on a plane of the flexible substrate and coupled between ground terminals of the first communication module and the second communication module; and

a second metal sheet, formed on a plane of the flexible substrate different from the first metal sheet, and coupled between signal terminals of the first communication module and the second communication module, for transmitting the RF signals.

2. The flexible transmission device of claim 1, wherein an impedance of the second metal sheet is inversely proportional to a width of the second metal sheet.

3. The flexible transmission device of claim 1, wherein the first communication module is an antenna.

4. The flexible transmission device of claim 3, wherein the antenna is formed on the flexible substrate.

5. The flexible transmission device of claim 1, wherein the second communication module is an RF processing unit for processing the RF signals.

6. The flexible transmission device of claim 1, wherein the second metal sheet are coupled to the first communication module and the second communication module by soldering.

7. The flexible transmission device of claim 1, wherein the first metal sheet is further coupled between the ground terminals of the first communication module and the second communication module by soldering.

8. A communication device, comprising:

a first communication module;

a second communication module; and

a flexible transmission device, comprising;

a flexible substrate;

a first metal sheet, formed on a plane of the flexible substrate and coupled between ground terminals of the first communication module and the second communication module; and

a second metal sheet, formed on a plane of the flexible substrate different from the first metal sheet, and coupled between signal terminals of the first communication module and the second communication module, for transmitting the RF signals.

9. The communication device of claim 8, wherein an impedance of the second metal sheet is inversely proportional to a width of the second metal sheet.

10. The communication device of claim 8, wherein the first communication module is an antenna.

11. The communication device of claim 10, wherein the antenna is formed on the flexible substrate.

12. The communication device of claim 8, wherein the second communication module is an RF processing unit for processing the RF signals.

13. The communication device of claim 8, wherein the second metal sheet are coupled to the first communication module and the second communication module by soldering.

14. The communication device of claim 8, wherein the first metal sheet is further coupled between the ground terminals of the first communication module and the second communication module by soldering.