Unlock instant, AI-driven research and patent intelligence for your innovation.

High-frequency noise countermeasure circuit board

A circuit substrate and high-frequency noise technology, which is applied in the field of high-frequency noise response circuit substrates, can solve the problems of high-frequency band suppression, high-frequency characteristic reduction, noise reflection, etc., and achieve excellent installability, reflection suppression, and noise suppression. The effect of conduction

Active Publication Date: 2020-01-17
MURATA MFG CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of noise countermeasures using such a component provided with a pattern inside, stray capacitance will be generated between the internal pattern of the component and the external electrodes, or between the patterns. and reduce
Therefore, there is a possibility that conduction of noise in a high frequency band (for example, a frequency band above 10 GHz) cannot be suppressed.
[0007] In addition, in the case of using the above-mentioned high-frequency inductor for high-frequency noise countermeasures, the conduction of noise can be suppressed, but there is a possibility that the noise is reflected by the inductor.
The reflected noise will be radiated again, which will adversely affect the surrounding components.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-frequency noise countermeasure circuit board
  • High-frequency noise countermeasure circuit board
  • High-frequency noise countermeasure circuit board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same reference numerals are used for the same or corresponding parts in the drawings. In addition, in each figure, the same code|symbol is attached|subjected to the same element, and overlapping description is abbreviate|omitted.

[0023] refer to figure 1 as well as figure 2 , the high-frequency noise-resistant circuit board 1 according to the embodiment will be described. figure 1 It is a plan view showing the structure of the high-frequency noise countermeasure circuit board 1 according to the embodiment. figure 2 is along figure 1 The sectional view of line II-II.

[0024] The high-frequency noise countermeasure circuit board 1 is a circuit for suppressing conduction and reflection of high-frequency noise (high-frequency noise). In the embodiment, the high frequency band of noise to be suppressed is a frequency band of 10 G...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a high-frequency noise countermeasure circuit substrate, comprising: a wiring substrate having a wiring pattern electrically connected to an IC that becomes a source of high-frequency noise; a pair of pads provided on a mounting surface of the wiring substrate; and a chip component having a direct A hexahedron-shaped main body made of a magnetic material (ferrite) and a pair of external electrodes provided at both ends of the main body. The pair of external electrodes are connected to a pair of pads. Viewed from a direction perpendicular to the mounting surface In the case of , the main body portion is disposed on the wiring pattern.

Description

technical field [0001] The present invention relates to a high-frequency noise countermeasure circuit board. Background technique [0002] In recent years, for example, in electronic devices such as mobile terminals represented by smartphones, high-speed driving by low voltage / high current has been progressing along with high performance and multifunctionalization. With high-speed driving, high-frequency noise is generated by high-speed switching of switching elements in electronic components such as ICs. Since noise adversely affects the operation of electronic equipment, noise countermeasures are required. [0003] For example, Japanese Patent Application Laid-Open No. 10-163027 discloses an inductance element including a printed pattern laid on a printed circuit board and a magnetic body attached to the vicinity of the printed pattern. The inductance of the printed pattern is adjusted to decrease, and the inductance can be adjusted continuously and with high precision. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02H10N97/00
CPCH05K1/0233H05K2201/1003H01L23/645H01F27/292H01F2017/008H01F2017/065H05K1/181H05K2201/086H05K2201/10636H01L28/10Y02P70/50H01L2224/16227H01L2924/15192H01L2924/19105H01L2924/19042H01L23/49838H01L23/66H01L2223/6611H01L2223/6661
Inventor 石渡祐
Owner MURATA MFG CO LTD