Printed circuit board and mobile terminal

A printed circuit board and circuit technology, applied in the directions of printed circuits, printed circuit components, electrical components, etc., can solve problems such as increased signal loss, and achieve the effect of reducing crosstalk, ensuring continuity, and reducing signal loss.

Inactive Publication Date: 2016-03-23
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of science and technology, more and more components are integrated on the printed circuit board. Under the demand of the era that requires the miniaturization of the printed circuit board, the layout density of the components on the printed circuit board is also increasing. At this time, in order to ensure the signal The isolation between traces reduces crosstalk, and the width of signal lines is limited, which also increases the loss of signals (such as radio frequency signals) passing through signal lines

Method used

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  • Printed circuit board and mobile terminal
  • Printed circuit board and mobile terminal
  • Printed circuit board and mobile terminal

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0025] see figure 1 and figure 2 , an embodiment of the present invention provides a printed circuit board, including a stacked first signal layer 1, a first substrate 2, a first reference layer 3, a second substrate 4, and a second reference layer 5, the first signal layer Layer 1 includes at least one radio frequency signal line, the radio frequency signal line includes a first line 11 and a second line 12 electrically connected, the width of the first line 1 is smaller than the width of the second line 2, the The characteristic impedance of the first section of line 11 refers to the first reference layer 2, the characteristic impedance of the second section of line 12 refers to the second reference layer 5, and the characteristic impedance of the first section of line 11 ...

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Abstract

The invention discloses a printed circuit board which comprises a first signal layer, a first substrate, a first reference layer, a second substrate and a second reference layer, wherein the first signal layer, the first substrate, the first reference layer, the second substrate and the second reference layer are laminated. An RF signal line comprises a first line segment and a second line segment which are electrically connected. The width of the first line segment is smaller than that of the second line segment. The characteristic impedance of the first line segment refers to the first reference layer, and the characteristic impedance of the second line segment refers to the second reference layer. The characteristic impedance of the first line segment is equal to that of the second line segment. The printed circuit board has low RF signal transmission loss. The invention further discloses a mobile terminal.

Description

technical field [0001] The invention relates to the field of printed circuit boards, in particular to a printed circuit board for transmitting radio frequency signals and a mobile terminal. Background technique [0002] On large-scale printed circuit boards and packaging substrates, the signal wires used to electrically connect two components or two terminals must have the same line width so that when the electronic signal is transmitted between the signal wires, the characteristic impedance of the signal wire (characteristicimpedance) can remain unchanged, especially in high-speed and high-frequency signal transmission, it is necessary to use a good impedance matching design between the two ends to reduce the reflection caused by impedance mismatch, that is, to reduce the signal Insertion loss during transmission, and relatively increase the return loss during signal transmission to avoid affecting the quality of signal transmission. With the development of science and tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02
CPCH05K1/025
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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