TWI542091B - Method and structure of using the shortest spacing between the signal guide and the ground conductor to prevent interference - Google Patents

Description

Method for preventing interference by using the shortest distance between signal guide and grounding guide and its structure

The invention relates to a method for preventing interference by using a shortest distance between a signal guide and a grounding guide, and a structure thereof, in particular to prevent the circuit from being affected by electromagnetic interference (EMI) or radio frequency interference (RFI). The circuit works more correctly and more normally.

The circuit is inevitably affected by various internal factors or external factors, which affects the correctness of its operation. For example, the interference voltage acting between the two poles of the signal is mainly caused by the coupling of the electromagnetic electromagnetic field between the signals and the voltage formed by the unbalanced circuit to convert the common mode interference, which is directly superimposed on the signal, directly affecting the measurement and control precision. Most of the circuit layouts of the conventional electronic devices are exposed on the surface of the printed circuit board, which is inevitably affected by the electromagnetic induction of the electromagnetic field (Electromagnetic Interference (EMI) or Radio Frequency Interference (Radio Frequency Interference). The trouble of RFI for short.

In view of this, the inventors of the present invention have researched and innovated to disclose the method and structure of the shortest spacing between the signal guide and the grounding conductor shown in the present invention to prevent interference.

The object of the present invention is to provide a method for preventing interference by using a shortest spacing between a signal guide and a grounding guide, and at least one grounding guide is disposed between at least two sets of electrical circuits adjacent to each other, wherein the grounding The periphery of the guide is respectively associated with at least one set of electrical circuits The signal guides are adjacent to each other, and the respective signal guides of the two sets of electrical circuits are located on different planes, and the first shortest connection of the signal guide of any one of the electrical circuits to the nearest point of the grounding guide Forming a first pitch that is substantially smaller than a second pitch formed by the second shortest connection of the same point of the signal guide to the nearest point of the signal conductor of the other set of electrical circuits, such that any The power lines and magnetic lines that are dissipated at one point are always pulled by the nearest grounding conductor; thus, the interference effects of the signal guides of the two sets of electrical circuits adjacent to each other are minimized.

The method for preventing interference by using the shortest spacing between the signal guide and the grounding guide disclosed in the present invention, wherein the grounding conductor is in the form of a closed plate, projecting and correspondingly shielding the signal guiding of one of the electrical circuits The person.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for preventing interference by using a shortest spacing between a signal guide and a grounding conductor, wherein at least one grounding conductor is disposed between at least three electrical circuits adjacent to each other, wherein the grounding The surrounding of the guiding member is respectively adjacent to the signal guiding members of the at least one set of electrical circuits, and the respective signal guiding members of the two sets of the electrical circuits of the three sets of electrical circuits are located in different planes, and the remaining one of the electrical circuits is The signal guides are in the same plane as the respective signal guides of one of the two sets of electrical circuits, and the signal guides of any one of the electrical circuits are brought to the nearest point of the grounding guide. The third spacing formed by the third shortest connection is always smaller than the fourth spacing formed by the fourth shortest connection of the signal conductor to the fourth shortest connection of the signal conductor of the other group of electrical circuits. The power lines and magnetic lines that are dissipated at any point of the signal guide are always pulled by the nearest grounding conductor; thus minimizing the mutual interference effects of the signal conductors of the two adjacent electrical circuits. .

The method for preventing interference by using the shortest distance between the signal guide and the grounding guide disclosed in the present invention, wherein the grounding guide is in the form of a closed plate, projectingly and correspondingly A signal guide that shields one of the electrical circuits.

The object of the present invention is to provide a structure that utilizes the shortest spacing between a signal guide and a grounding conductor to prevent interference, comprising: at least two sets of electrical circuits, each set of electrical circuits each having a signal guide; a grounding guide, the surrounding of the grounding guide is respectively adjacent to the signal guiding members of the at least one set of electrical circuits, and the respective signal guiding members of the two sets of electrical circuits are located in different planes, and the electrical circuit of the any one of the sets of electrical circuits is also The first spacing formed by any point of the signal guide to the first shortest connection of the nearest point of the grounding conductor is less than the second point of the signal conductor from the same point of the signal conductor to the second closest point of the signal conductor of the other group of electrical circuits The second spacing formed by the shortest connection is such that the power lines and magnetic lines of force that escape from any point of the signal guide are constantly pulled by the nearest grounding conductor; thus the signalling of the two sets of electrical circuits adjacent to each other The interference effects of the components are minimized.

The invention discloses a structure for preventing interference by using a shortest distance between a signal guide and a grounding guide, wherein the grounding guide is in the form of a closed plate and is projected with a signal guide of one of the electrical circuits. The state of the shadow is presented in a corresponding manner.

The object of the present invention is to provide a structure that utilizes the shortest spacing between a signal guide and a grounding conductor to prevent interference, comprising: at least three sets of electrical circuits, each set of electrical circuits each having a signal guide; a grounding guide, the surrounding of the grounding guide is respectively adjacent to the signal guiding members of the at least one set of electrical circuits, and the respective signal guiding members of the two of the three sets of electrical circuits are located in different planes, and the remaining The signal guides of one set of electrical circuits are in the same plane as the respective signal guides of one of the two sets of electrical circuits, and also any point of the signal guides of the any set of electrical circuits to The third spacing formed by the third shortest connection of the grounding conductor is less than the signal from the same point of the signal conductor to the other group of electrical circuits. a fourth spacing formed by the fourth shortest connection of the nearest point of the guide such that the power line and the magnetic field line that escape from any point of the signal guide are constantly pulled by the nearest grounding conductor; thus The signal conductors of the two sets of electrical circuits are subject to the least interference effects.

The invention discloses a structure for preventing interference by using a shortest distance between a signal guide and a grounding guide, wherein the grounding guide is in the form of a closed plate and is projected with a signal guide of one of the electrical circuits. The state of the shadow is presented in a corresponding manner.

The invention discloses a structure for preventing interference by using a shortest distance between a signal guide and a grounding guide, wherein the grounding conductor and the electrical circuit are universal connections.

The desirable entities of the present invention can be clarified by the following description and the accompanying drawings.

(10) ‧ ‧ million connections 埠

(20)‧‧‧ Grounding Guides

(21)(22)(23)‧‧‧ Electrical circuit

(211)(212)(221)(222)(231)(232)‧‧‧Signal guides

(200) (210) (220) (230) ‧ ‧ points

(D1) ‧ ‧ first spacing

(D2) ‧‧‧Second spacing

(D3) ‧ ‧ third spacing

(D4) ‧ ‧ fourth spacing

First Figure: An exploded perspective view of an embodiment of the present invention.

Second Figure: A perspective assembled view of an embodiment of the present invention.

Figure 3: Section 3-3 of the second figure.

Figure 4: Section 4-4 of the second figure.

Fig. 5 is an exploded perspective view showing a signal guide and a grounding guide of an embodiment of the present invention.

Figure 6: Section 6-6 of the fifth figure.

Figure 7: Section 7-7 of the fifth figure.

Figure 8 is an enlarged view of a partial area 8 of the seventh figure.

Fig. 9 is an enlarged view of a partial area 9 of the seventh figure.

Referring to the first to eighth figures, the method for preventing interference by using the shortest spacing between the signal guide and the grounding guide provided by the present invention is at least two sets of electrical circuits (21) and adjacent to each other. 22) at least one grounding guide (20) is disposed, wherein the grounding conductor (20) is surrounded by at least one set of electrical circuit (21) or (22) signal guiding member (211) (212) or (221) (222) next to each other, and the respective signal guides [(211)(212)] and [(221)(222)] of the two sets of electrical circuits (21) and (22) are located in different planes, and The first spacing formed by any point (210) of the signal conductor (211) (212) of the set of electrical circuits (21) to the first shortest connection of the nearest point (200) of the grounding conductor (20) (D1), which is formed by the second shortest connection of the nearest point (220) of the signal guide (222) of the signal conductor (222) of the other set of electrical conductors (22) The second pitch (D2) (ie, D1 < D2), such that the power line and the magnetic field line that escape from any point (210) of the signal guide (211) (212) are always the closest grounding guide (20) Traction; thus the signal conductors of the two sets of electrical circuits (21) and (22) adjacent to each other [ (211) (212)] and [(221) (222)] are the least interfered with each other.

Referring to the first to eighth figures, the method for preventing interference by using the shortest distance between the signal guide and the grounding guide disclosed in the present invention, wherein the grounding guide (20) is closed and shielded One side of the signal conductors (211) (212) of one of the electrical circuits (21) serves as a specific method for achieving the shortest pitch setting described above.

Since the energy system must follow the path of least resistance from the high order to the low order. For the two energy types, such as power line and magnetic line, the transmission effect of the space is the shortest between the two points, that is, the resistance encountered during transmission is also the smallest. The present invention utilizes such a method of setting the shortest pitch, that is, using any point (210) of the signal guide (211) (212) of any set of electrical circuits (21) to the nearest point of the grounding guide (20) (200) The first shortest line formed by the first shortest connection (D1) is always smaller than the same point (210) of the signal guide (211) to another set of electrical circuits The second spacing (D2) formed by the second shortest connection of the nearest point (220) of the signal guide (222) (ie, D1 < D2), that is, from the signal guide (211) (212) The power line and the magnetic field line dissipated at any point (210) are always pulled by the nearest grounding conductor (20); thus the two sets of electrical circuits (21) and (22) adjacent to each other The interference effects of the signal guides [(211)(212)] and [(221)(222)] are minimized.

Referring to the ninth figure, the method for preventing interference by using the shortest spacing between the signal guide and the grounding guide disclosed in the present invention is at least three sets of electrical circuits (21) (22) adjacent to each other and At least one grounding guide (20) is disposed between (23), wherein the grounding guide (20) is surrounded by signal conductors of at least one set of electrical circuits (21) (22) or (23) [(211) ) (212)], [(221)(222)], and [(231)(232)], and two of the three sets of electrical circuits (21), (22), and (23) The respective signal conductors [(211)(212)] and [(221)(222)] of (21) and (22) are located in different planes, and the signal conductors of the remaining set of electrical circuits (23) [( 231) (232)] is in the same plane as the signal guides [(221) (222)] of one of the two sets of electrical circuits (21) and (22), and a third spacing (D3) formed by any point (230) of the signal conductor (231) of any one of the electrical circuits (23) to a third shortest connection of the nearest point (201) of the grounding conductor (20), Constantly smaller than the fourth shortest link of the nearest point (220) of the signal guide (231) to the nearest point (220) of the signal conductor (222) of the other set of electrical circuits (22) Forming a fourth pitch (D4) (ie, D3 < D4) such that power lines and magnetic lines that escape from any point of the signal guide (231) are constantly pulled by the nearest grounding conductor (20) Therefore, the interference effects between the signal conductors [(231) (232)] and [(221) (222)] of the two sets of electrical circuits (23) and (22) adjacent to each other are minimized.

Referring to the seventh to ninth drawings, the method for preventing interference by using the shortest distance between the signal guide and the grounding guide disclosed in the present invention, wherein the grounding guide (20) is closed The plate is projected and correspondingly shields one side of the signal conductors (211) (212) of one of the electrical circuits (21).

Referring to the first to eighth figures, the shortest distance between the signal guide and the grounding guide provided by the present invention is used to prevent interference, and includes: at least two sets of electrical circuits (21) and (22) Each set of electrical circuits (21) and (22) has a signal guide [(211) (212)], [(221) (222)]; and a grounding guide (20), the grounding guide ( The surrounding of 20) is respectively adjacent to the signal guides (211) (212) or (221) (222) of at least one set of electrical circuits (21) or (22), and the two sets of electrical circuits (21) and (22) The respective signal guides [(211)(212)] and [(221)(222)] are located in different planes, and also make any point of the signal guide (211) of any one of the electrical circuits (21) (210) The first spacing (D1) formed by the first shortest connection to the nearest point (200) of the grounding conductor (20) is always smaller than the same point (210) of the signal guiding member (211) to another group The second spacing (D2) formed by the second shortest connection of the nearest point (220) of the signal conductor (222) of the electrical circuit (22) (i.e., D1 < D2) is derived from the signal conductor (211) The power line and magnetic line that escape at any point (212) are always pulled by the nearest grounding conductor (20); Adjacent two electrical circuits (21) (22) of signal conductors [(211) (212)] and [(221) (222)] is subjected interfere with each other between the effects were minimized.

Referring to the first to ninth figures, the shortest distance between the signal guide and the grounding guide disclosed in the present invention is used to prevent interference, wherein the grounding guide (20) is a closed-plate projection. And correspondingly shielding one side of the signal conductor (211) (212) of one of the electrical circuits (21).

Referring to the first to ninth drawings, the structure for preventing interference by using the shortest spacing between the signal guide and the grounding guide disclosed in the present invention includes: at least three sets of electrical circuits (21) (22) and (23), each group of electrical circuits (21) (22) and (23) each has a signal guide [(211)(212)], [(221)(222)] and [(231)(232)]; and the grounding guide (20), the grounding guide (20) is surrounded by at least one The signal conductors of the group circuit (21) (22) and (23) are separated by [(211)(212)], [(221)(222)] or [(231)(232)], and three groups of electricity The respective signal conductors [(211)(212)] of the two sets of electrical circuits (21) (22) in the circuits (21) (22) and (23) are different from the [(221) (222)] system. Plane, and the signal conductors (231) (232) of the remaining set of electrical circuits (23) and the respective signal conductors of one of the electrical circuits (22) of the two sets of electrical circuits (21) (22) (221) (222) are located in the same plane, and also make any point (230) of the signal guide (231) of any one of the electrical circuits (23) to the nearest point (201) of the grounding guide (20) The third spacing (D3) formed by the three shortest connections is always less than the nearest point (230) of the signal conductor (231) to the nearest point of the signal conductor (222) of the other group of electrical circuits (22) (220) a fourth spacing (D4) formed by the fourth shortest connection such that the power line and the magnetic field line that escape from any point (230) of the signal guide (231) are constantly closest to the grounding conductor (20) Traction The mutual interference effects between the signal guides [(231)(232)] and [(221)(222)] of the adjacent two sets of electrical circuits (23) (22) are minimized.

Referring to the first to ninth figures, the shortest distance between the signal guide and the grounding guide disclosed in the present invention is used to prevent interference. The grounding guide (20) is in the form of a closed plate and The signal conductors (211) (212) of one of the electrical circuits (21) are projected and correspondingly present in the state of the shadow.

Although the eighth and ninth figures show the most basic configuration of the present invention, it is also possible to expand to the larger structure as shown in the fourth and seventh figures in accordance with the structure of the most basic type shown in Figs. Of course, it can be further expanded to a larger structure, and the present invention is not limited.

Referring to the first to ninth figures, the shortest distance between the signal guide and the grounding guide disclosed in the present invention is used to prevent interference, wherein the grounding conductor (20) and the electrical circuit (21) (22) and (23) are universal connection ports (10) (universal connections, USB2.0 and USB3.0 can achieve excellent interference control effects).

The method of using the shortest distance between the signal guide and the grounding guide to prevent interference and the structure thereof can be modified and applied without departing from the spirit and scope of the present invention, and the present invention is not limited.

(20)‧‧‧ Grounding Guides

(21) (22) ‧‧‧ electrical circuits

(211)(212)(221)(222)‧‧‧Signal guides

(200) (210) (220) ‧ ‧ points

(D1) ‧ ‧ first spacing

(D2) ‧‧‧Second spacing

Claims (6)

A method for preventing interference by using a shortest spacing between a signal guide and a grounding guide, wherein at least one grounding guide is disposed between at least two sets of electrical circuits adjacent to each other, wherein the grounding guide is surrounded by The signal guiding members of at least one group of electrical circuits are adjacent to each other, so that the grounding conductors are in the form of a closed plate, projecting and correspondingly shielding one side of the signal guiding members of one of the electrical circuits, and the respective signal guiding signals of the two sets of electrical circuits The components are located on different planes, and the first spacing formed by any point of the signal guide of any one of the electrical circuits to the first shortest connection of the nearest point of the grounding conductor is always less than the same point of the signal conductor a second spacing formed by a second shortest connection to the nearest point of the signal conductor of the other set of electrical circuits such that the power line and magnetic field lines that escape from any point of the signal guide are constantly closest to the grounding conductor The components are pulled; thereby minimizing the interference effects of the signal guides of the two sets of electrical circuits adjacent to each other. A method for preventing interference by using a shortest distance between a signal guide and a grounding guide, wherein at least one grounding guide is disposed between at least three sets of electrical circuits adjacent to each other, wherein the grounding guide is respectively surrounded by The signal guides of at least one group of electrical circuits are adjacent to each other, and the respective signal guides of two of the three sets of electrical circuits are located in different planes, and the signal guides of the remaining one of the electrical circuits are combined with the above two groups The respective signal guides of one of the electrical circuits in the electrical circuit are in the same plane, so that the grounding conductor is in the form of a closed plate, projecting and correspondingly shielding one side of the signal guide of one of the electrical circuits, and The third spacing formed by any one of the signal guides of any one of the electrical circuits to the third shortest connection of the nearest point of the grounding conductor is further less than the same point of the signal conductor to the other electrical circuit a fourth spacing formed by the fourth shortest connection of the nearest point of the signal guide such that the power line and the magnetic field line that escape from any point of the signal guide are constantly pulled by the nearest grounding conductor; The two sets of electrical circuits The interference effects of the signal guides are minimized. A structure for preventing interference by using a shortest distance between a signal guide and a grounding guide, comprising: at least two sets of electrical circuits, each set of electrical circuits each having a signal guide; and a grounding guide, the grounding guide The surrounding portions are respectively adjacent to the signal guiding members of the at least one set of electrical circuits, and the respective signal guiding members of the two sets of electrical circuits are located in different planes, so that the grounding guide is in the form of a closed plate and is connected to one of the electrical circuits. Between the signal guides, the state of the shielding is projected and correspondingly displayed, and the first shortest connection of the signal guide of any one of the electrical circuits to the first shortest connection of the nearest point of the grounding conductor is formed. The spacing, which is less than a second spacing formed by the second shortest connection of the signal conductor to the second shortest line of the signal conductor of the other group of electrical circuits, so as to escape from any point of the signal conductor The power line and the magnetic line are constantly drawn by the nearest grounding conductor; thus, the interference effects of the signal guides of the two sets of electrical circuits adjacent to each other are minimized. The shortest distance between the signal guide and the grounding guide as set forth in claim 3 is used to prevent interference, wherein the grounding conductor and the electrical circuit are universal connections. A structure that utilizes a shortest spacing between a signal guide and a grounding conductor to prevent interference, comprising: at least three sets of electrical circuits, each set of electrical circuits each having a signal guide; and a grounding guide, the grounding guide The surrounding portions are respectively adjacent to the signal guiding members of at least one group of electrical circuits, and the respective signal guiding members of the two groups of the three groups of electrical circuits are located in different planes, and the signals of the remaining group of electrical circuits are guided. And the respective signal guides of one of the two sets of electrical circuits are in the same plane, so that the grounding guide is in the form of a closed plate. And presenting a state of shielding between the signal guides of one of the electrical circuits and correspondingly, and also making any point of the signal guide of any one of the electrical circuits to the third shortest connection of the nearest point of the grounding guide The third pitch formed by the line is constant less than a fourth pitch formed by the same point of the signal guide to a fourth shortest connection of the nearest point of the signal conductor of the other set of electrical circuits, such that the signal guide The power lines and magnetic lines that are dissipated at any point are constantly drawn by the nearest grounding conductor; thus, the interference effects of the signal guides of the two sets of electrical circuits adjacent to each other are minimized. The shortest distance between the signal guide and the grounding guide as set forth in claim 5 is used to prevent interference, wherein the grounding conductor and the electrical circuit are universal connections.