JP7169172B2 - Radio system and radio equipment - Google Patents

Description

No. 62/589,305 filed November 21, 2017; U.S. Provisional Application No. 62/595820 filed December 7, 2017; Chinese Patent Application No. XXXXXXXXXXXX. No. X, all of which are hereby incorporated by reference.

TECHNICAL FIELD The present invention relates to radio systems, and more particularly to radio systems capable of reducing electromagnetic interference.

As technology advances, many types of electronic devices such as tablet computers and smart phones have begun to include wireless charging capabilities. The user puts the electronic device on the wireless charging transmitting terminal, and the wireless charging receiving terminal in the electronic device can generate current by electromagnetic induction or electromagnetic resonance to charge the battery. Due to the convenience of wireless charging, electronic devices with wireless charging modules are becoming increasingly popular.

Wireless charging devices generally include a magnetic conductive plate that supports a coil. When electricity is applied to the coil in wireless charging mode or wireless communication mode, the magnetic conductive plate can concentrate the magnetic field lines emitted from the coil for better performance. However, existing wireless devices generate electromagnetic waves during operation, which can cause electromagnetic interference to other electronic devices in the vicinity of the wireless device.

Therefore, how to design wireless devices that can reduce electromagnetic interference and maintain the same operating performance is a problem that needs to be discussed and resolved today.

In view of this, it is an object of the present disclosure to provide a wireless system for solving the above problems.

According to some embodiments of the present disclosure, a wireless system is provided and includes a first coil, a second coil, and a capacitance adjustment unit. The second coil is configured to sense the first coil. A capacity adjustment unit is connected to the first coil, the capacity adjustment unit includes at least one closed loop and a connecting line, the connecting line being connected between the first coil and the closed loop.

According to some embodiments, the closed loop has only one connection endpoint configured to be connected to the connection line.

According to some embodiments, the first coil comprises a helical structure, the helical structure forming a hollow region. A closed loop is placed in the hollow region.

According to some embodiments, the first coil comprises a helical structure, the helical structure forming a hollow region. A closed loop is positioned outside the hollow region.

According to some embodiments of the present disclosure, the number of turns of the closed loop is at least 2 turns.

According to some embodiments, the first coil includes a first metal wire and a second metal wire disposed on the first surface and the second surface, respectively, the turns of the first metal wire The winding direction is opposite to the winding direction of the second metal wire.

According to some embodiments, the first metal line has a first end, the second metal line has a first end and a second end, and the first metal line A first end of is electrically connected to a first end of a second metal line, and the first metal line is connected in series with the second metal line.

According to some embodiments, the closed loop is connected to the second end of the second metal line by a connecting line.

According to some embodiments, the first coil comprises a signal transmission coil.

According to some embodiments the first coil comprises a signal receiving coil.

According to some embodiments, the closed loop includes a first closed wiring and a second closed wiring, the second closed wiring located on the first closed wiring and the first closed wiring not connected to

According to some embodiments of the present disclosure, a wireless system is provided and includes a first coil, a second coil, and a capacitance adjustment unit. The second coil is configured to sense the first coil. A capacity adjustment unit is connected to the first coil. The capacity adjustment unit includes a variable capacitor and connecting wires. A connection line is connected between the first coil and the variable capacitor, and one end of the variable capacitor is electrically grounded.

According to some embodiments of the present disclosure, a wireless system is provided and includes a first coil, a second coil, and a capacitance adjustment unit. The second coil is configured to sense the first coil. A capacity adjustment unit surrounds the first coil. The capacity adjustment unit includes at least one closed loop and is electrically independent of the first coil.

According to some embodiments of the present disclosure, a wireless system is provided and includes a first coil and a capacitance adjustment unit. The first coil includes a first metal wire and a second metal wire. A first metal wire is disposed on the first surface and has a first helical structure. A second metal wire is disposed on the second surface and has a second helical structure. A second metal line is electrically connected to the first metal line. A capacity adjustment unit is connected to the first coil. The capacity adjustment unit includes at least one closed loop and a connecting line, the connecting line being connected between the first coil and the closed loop.

The present disclosure provides a wireless system that includes a first coil and a second coil. The second coil is configured to sense the first coil and generate power when the first coil is powered. In various embodiments of the present disclosure, the wireless system includes a capacitance adjustment device electrically connected to the first coil (or the second coil) and configured to change the capacitance value between the layers of the first coil. Since the unit can be included, electromagnetic interference to other electronic devices by electromagnetic waves generated by the transmitting terminal device can be reduced.

Also, the placement of the capacity adjustment unit does not change the inductance and impedance values of the first coil, so it does not affect the performance of the transmitting terminal device during wireless charging. In some embodiments, the capacity adjustment unit can include closed loops and connecting lines. A closed loop is formed by the wire, and the closed loop has only one connecting end point connected to the connecting line.

The features and advantages of the invention are set forth in the following, and in part will be apparent from the description. or can be learned in practice according to the principles disclosed herein. Additional features and advantages of the invention may be realized and obtained by means of the instrumentalities and special combinations pointed out in the claims. These and other features of the invention will become more fully apparent from the following description and claims, or may be learned by practice of the principles set forth in this disclosure.

Aspects of the present disclosure are better understood from the following detailed description with reference to the accompanying drawings. Note that, in accordance with standard industry practice, the various features are not drawn to scale. In fact, the dimensions of various features have been arbitrarily increased or decreased for clarity of discussion.
1 is a schematic diagram of a wireless system according to one embodiment of the present disclosure; FIG. 2 is an exploded view of a first coil module according to one embodiment of the present disclosure; FIG. 3 is a top view of a coil assembly according to one embodiment of the present disclosure; FIG. FIG. 4 is a schematic diagram of a structure of a first plane coil assembly, according to an embodiment of the present disclosure; FIG. 5 is a schematic diagram of the structure of a third plane coil assembly, according to an embodiment of the present disclosure; FIG. 6 is a schematic diagram of the structure of a second plane coil assembly, according to an embodiment of the present disclosure; FIG. 7 is a schematic diagram of the structure of a second plane coil assembly according to another embodiment of the present disclosure; 8 is a top view of a coil assembly according to another embodiment of the present disclosure; FIG. FIG. 9 is a schematic diagram of a top layer structure of a first plane coil assembly according to an embodiment of the present disclosure; FIG. 10 is a schematic diagram of the underlying structure of a second plane coil assembly according to an embodiment of the present disclosure; FIG. 11 is a top view of a coil assembly of a wireless device according to another embodiment of the present disclosure; FIG. 12 is a schematic diagram of a top layer structure of a coil assembly on a first side according to an embodiment of the present disclosure; FIG. 13 is a schematic diagram of the underlying structure of a second plane coil assembly according to an embodiment of the present disclosure; FIG. 14 is a schematic diagram of the structure of a first plane coil assembly according to another embodiment of the present disclosure;

In the following detailed description, for purposes of explanation, numerous specific details and embodiments are set forth in order to provide a thorough understanding of the disclosure. Certain components and structures described in the following detailed description are described for the purpose of clarifying the disclosure. However, it should be apparent that the exemplary embodiments described herein are used for illustrative purposes only, and the inventive concept is not limited to these exemplary embodiments, but rather various can be implemented in the form Also, in the drawings of different embodiments, similar and/or corresponding numbers may be used to indicate similar and/or corresponding components in order to clearly describe the present disclosure. However, the use of similar and/or corresponding numbers in drawings of different embodiments does not imply a correlation between the different embodiments. Directional terms such as "up", "down", "left", "right", "front" or "back" are reference directions for the accompanying drawings. Accordingly, the use of directional terminology is descriptive rather than limiting of the present disclosure.

It is to be understood that elements for a particular description or a particular figure may exist in any form known to those of ordinary skill in the art. Also, when a layer is "on" another layer or substrate, it can be "directly" on that layer or substrate, or the other layer can be between that layer and the other layer. .

Related expressions are used in this specification. For example, "lower", "bottom", "higher", or "top" are used to describe the position of one component relative to another. It should be understood that if the device were to be turned upside down, the "lower" side component would become the "higher" side component.

The terms "about" and "mostly" generally mean +/−20% of a given value, more generally +/−10% of a given value, and even more generally +/−10% of a given value. Means +/−5% of the value. The given values in this disclosure are approximations. Unless otherwise specified, a given value includes the meaning of "about" or "mostly."

1 is a schematic diagram of a wireless system according to one embodiment of the present disclosure; FIG. In this embodiment, the radio system 1 includes two radio devices (a transmitting terminal device 10 and a receiving terminal device 20), the receiving terminal device 20 being arranged above the transmitting terminal device 10. FIG. For example, the transmitting terminal device 10 can be a wireless charging pad that includes a first coil module 100, and the first coil module 100 can further have a first coil. For example, the receiving terminal device 20 can be a smart phone or tablet computer including a second coil module 200, which can further have a second coil.

In this embodiment, the first coil can operate as a signal transmitting coil and the second coil can operate as a signal receiving coil. When the first coil is energized, the adjacent second coil is accordingly induced to generate power and charge the battery (not shown) of the receiving terminal device 20 .

For example, the first coil (or the second coil) can operate as, but is not limited to, a resonant charging coil according to the Alliance for Wireless Power (A4WP) standard. . Also, the first coil (or the second coil) can also operate as an inductive charging coil based on Wireless Power Consortium (WPC) standards such as the Qi standard. Therefore, the transmitting terminal device 10 (or receiving terminal device 20) of this embodiment can respond to different forms of charging and expand the application range. For example, for short range (eg, 1 cm or less), inductive type operation is used, and for long range, resonant type operation is used.

As shown in FIG. 2, FIG. 2 is an exploded view of the first coil module 100 according to one embodiment of the present disclosure. As shown in FIG. 2, the first coil module 100 can include a coil assembly 102, an adhesive layer 104, and a magnetic conductive plate 106. As shown in FIG. In this embodiment, the coil assembly 102 is placed on the magnetic conductive plate 106 and the coil assembly 102 is connected with the magnetic conductive plate 106 by the adhesive layer 104 . Adhesive layer 104 can be tape or any other material that can be used for connection.

Also, in the present embodiment, the magnetic conductive plate 106 can be ferrite, but is not limited to this. For example, in other embodiments, the magnetic conductive plate 106 may also include nanocrystalline material. The magnetic conductive plate 106 can have a magnetic permeability corresponding to that of the coil assembly 102 and can concentrate the electromagnetic waves of the coil assembly 102 more.

As shown in FIG. 2, coil assembly 102 includes substrate 108 and coil structure 110 (first coil), where coil structure 110 is formed on substrate 108 . In this embodiment, substrate 108 is a flexible circuit board, but is not so limited. Any substrate that can be used to form the coil structure 110 is within the scope of this disclosure.

3-6, FIG. 3 is a top view of coil assembly 102 according to one embodiment of the present disclosure. FIG. 4 is a schematic diagram of the structure of the coil assembly 102 on the first side 1021, according to one embodiment of the present disclosure. FIG. 5 is a schematic diagram of the structure of the coil assembly 102 on the third plane 1023, according to one embodiment of the present disclosure. FIG. 6 is a schematic diagram of the structure of the coil assembly 102 on the second side 1022, according to one embodiment of the present disclosure.

In this embodiment, the substrate 108 of the coil assembly 102 includes a first layer structure, a second layer structure, and a third layer structure located on the first side 1021, the second side 1022, and the third side 1023, respectively. and the third surface 1023 is located between the first surface 1021 and the second surface 1022 . Note that although the coil structure 110 in FIG. 6 should be positioned below the second plane 1022, the coil structure 110 in FIG. 6 is still shown in solid lines for clarity.

As shown in FIGS. 4-6, the coil structure 110 (first coil) of the coil assembly 102 can include a first metal wire 111 and a second metal wire 112, and a connecting member 114, The first metal line 111 is arranged on the first surface 1021 , the second metal line 112 is arranged on the second surface 1022 , and the connecting member 114 is arranged on the third surface 1023 . Also, as shown in FIG. 3, the coil assembly 102 further includes a first terminal contact 103 and a second terminal contact 105 configured to be electrically connected to an external circuit such as a control chip. can

Next, as shown in FIG. 4, the first metal wire 111 forms a first spiral structure having a first end 1111 and a second end 1112, the second end 1112 being It is connected to the second terminal contact 105 . As shown in FIG. 5, one end of connecting member 114 is connected to first terminal contact 103 . Also, as shown in FIG. 6, the second metal wire 112 forms a second spiral structure having a first end 1121 and a second end 1122 .

Coil assembly 102 may also include a plurality of metal connectors (also referred to as vias) configured to pass through substrate 108 and connect first metal line 111 and second metal line 112 . can. For example, as shown in FIGS. 3-6, coil assembly 102 includes metal connector MC1 and metal connector MC2. Metal connector MC1 is configured to connect first end 1111 of first metal wire 111 , connecting member 114 , and first end 1121 of second metal wire 112 . Also, the second end 1122 of the second metal wire 112 is electrically connected to the first metal wire 111 by a metal connector MC2.

As shown in FIGS. 4 and 5, coil assembly 102 further includes metal connector MC3 configured to connect connecting member 114 and extension wire 1031 . Coil assembly 102 also includes a plurality of metal connectors MC5 and MC6 arranged around connecting member 114 . As shown in FIGS. 3 to 6, the plurality of metal connectors MC5 and MC6 are arranged on both sides of the connection member 114, respectively. The metal connector MC5 and the metal connector MC6 are configured to electrically connect the first metal wire 111 and the second metal wire 112, thereby providing one portion of the first spiral structure of the first metal wire 111. and a portion of the second helix of the second metal wire 112 can be connected in parallel. Therefore, the effect of lowering the overall impedance of the coil assembly 102 is obtained, and the number of turns of the coil structure 110 of the coil assembly 102 can also be increased.

In this embodiment, the first coil module 100 further includes a capacity adjustment unit 150 connected to the first coil. For example, as shown in FIG. 6, capacity adjustment unit 150 is disposed on second surface 1022, capacity adjustment unit 150 can include at least one closed loop 152 and connection line 154, and connection line 154 is connected between the second metal wire 112 (first coil) and the closed loop 152 .

As shown in FIG. 6, the closed loop 152 may be formed of wire, the closed loop 152 has only one connection end point 1521 configured to connect the connection line 154, and the capacity adjustment unit 150 has one contains only one connecting line 154 . Further, the second helical structure of the second metal wire 112 forms a hollow region 1124 and the closed loop 152 is positioned within the hollow region 1124 .

By arranging the capacitance adjustment unit 150 in this embodiment, the capacitance value between the layers of the first coil (or the capacitance value between two adjacent turns of the first coil) can be changed, and the transmission terminal Electromagnetic interference (EMI) to other electronic devices by the electromagnetic waves generated by device 10 can be reduced. Also, the placement of the capacitance adjustment unit 150 does not change the inductance and impedance values of the first coil. That is, it does not affect the performance of the transmitting terminal device 10 during wireless charging.

As shown in FIG. 7, FIG. 7 is a schematic diagram of the structure of the coil assembly 102A on the second side 1022, according to another embodiment of the present disclosure. Coil assembly 102 A of this embodiment is similar to coil assembly 102 . The difference between the two is that the capacity adjustment unit 150 of this embodiment only includes a closed loop 152 surrounding the second metal wire 112 (first coil), and the capacity adjustment unit 150 is electrically connected to the first coil. Being independent.

8-10, FIG. 8 is a top view of a coil assembly 102B of a wireless device according to another embodiment of the present disclosure, and FIG. 9 is a first side view according to one embodiment of the present disclosure. FIG. 10 is a schematic illustration of the upper layer structure of coil assembly 102B on 1021, and FIG. 10 is a schematic illustration of the lower layer structure of coil assembly 102B on second surface 1022, according to one embodiment of the present disclosure.

In this embodiment, as shown in FIGS. 9 and 10, the winding direction of the first metal wire 111 is opposite to the winding direction of the second metal wire 112, and they are within the hollow region 1124. are connected in series with each other by metal connectors MC located at . A first end 1111 of the first metal wire 111 is electrically connected to a first end 1121 of the second metal wire 112 by a metal connector MC. In this embodiment, the first metal wire 111 has a first spiral structure and the second metal wire 112 has a second spiral structure.

8 and 10, the coil assembly 102B further has an extension wire 1031, and the second end 1122 of the second metal wire 112 is connected to the extension wire 1031 and the first metal wire 112 by a metal connector MC. It is electrically connected to terminal contact 103 . Also, as shown in FIGS. 8 and 9, the second end 1112 of the first metal wire 111 is connected to the second terminal contact 105 .

Note that the second helical structure formed by the second metal line 112 has a hollow area 1124 and the capacity adjustment unit 150 is arranged outside the hollow area 1124 . Specifically, closed loop 152 is adjacent to first terminal contact 103 and closed loop 152 is connected to second end 1122 of second metal wire 112 by connecting wire 154 . The number of turns of the closed loop 152 is two or more, but is not limited to this. The number of turns in closed loop 152 is determined by the adjusted capacitance value.

From the above embodiments, it can be known whether the first metal line 111 and the second metal line 112 are connected in series or in parallel. The capacitance adjustment unit 150 can be used to adjust the capacitance value of the first coil to reduce the problem of electromagnetic interference by wireless devices (eg, transmitting terminal 10).

11-13, FIG. 11 is a top view of a coil assembly 302 of a wireless device according to another embodiment of the disclosure, and FIG. 12 is a first coil assembly 302 according to an embodiment of the disclosure. FIG. 13 is a schematic illustration of the upper layer structure of coil assembly 302 on surface 3021, and FIG. 13 is a schematic illustration of the lower layer structure of coil assembly 302 on second surface 3022, according to one embodiment of the present disclosure.

As shown in FIG. 12, the first metal wire 304 has a first end 3041 and a second end 3043 connected to the first terminal contact 103 and the second terminal contact 105 respectively. Also, as shown in FIG. 13, the second metal line 306 has a first end 3061 and a second end 3063 . A first end 3061 is connected to the first metal wire 304 by a metal connector MC1, and a second end 3063 is connected to a second end 3043 of the first metal wire 304 by a metal connector MC2.

The capacitance adjustment unit 150A of this embodiment is arranged on the first surface 3021 and connected to the first end 3041 of the first metal line 304 by the connection line 154 . Closed loop 152 includes first closed wiring 1522 and second closed wiring 1523 . A first closed wire 1522 is connected to the connecting wire 154 and a second closed wire 1523 is located within the first closed wire 1522 and is not connected to the first closed wire 1522 .

In this embodiment, according to the structural design of the capacitance adjustment unit 150A, the effect of adjusting the capacitance value of the first coil (consisting of the first metal wire 304 and the second metal wire 306) by the capacitance adjustment unit is further enhanced. can be improved.

As shown in FIG. 14, FIG. 14 is a schematic diagram of the structure of the coil assembly 302A on the first side 3021, according to another embodiment of the present disclosure. Coil assembly 302 A of this embodiment is similar to coil assembly 302 . The difference between the two is that the capacity adjustment unit 150B of this embodiment includes a variable capacitor 153. FIG. One end of the variable capacitor 153 is connected to the connection line 154, and the other end of the variable capacitor 153 is electrically grounded.

In this embodiment, according to the configuration of the capacitance adjustment unit 150B, the capacitance value of the first coil of the coil assembly 302A can be adjusted immediately to further reduce the effect of electromagnetic interference caused by the coil assembly 302A.

It should be noted that although the capacity adjustment unit 150 is located in the transmitting terminal device 10 in the above embodiment, it can also be located in the receiving terminal device 20 in other embodiments. The position of the capacity adjustment unit 150 can be determined according to actual needs. For example, when the capacity adjusting unit 150 is arranged in the transmitting terminal 10, the purpose of miniaturizing the receiving terminal 20 can be achieved. Also, when the capacity adjustment unit 150 is located in the receiving terminal 20, the receiving terminal 20 can be compatible with different types of transmitting terminals (eg, transmitting terminals without a capacity adjusting unit).

The present disclosure provides a wireless system including a first coil and a second coil. The second coil is configured to sense the first coil and generate power when the first coil is powered. In various embodiments of the present disclosure, the wireless system includes a capacitance adjustment device electrically connected to the first coil (or the second coil) and configured to change the capacitance value between the layers of the first coil. Since the unit 150 can be included, electromagnetic interference to other electronic devices by the electromagnetic waves generated by the transmitting terminal device 10 can be reduced.

Also, the placement of the capacity adjustment unit 150 does not change the inductance value and impedance value of the first coil, so it does not affect the performance of the transmitting terminal device 10 during wireless charging. In some embodiments, capacity adjustment unit 150 can include closed loops and connecting lines. A closed loop is formed by the wire, and the closed loop has only one connecting end point connected to the connecting line.

While certain embodiments of the disclosure and their advantages have been described in detail, various modifications may be made herein without departing from the spirit and scope of the disclosure as defined by the appended claims. It should be understood that changes, substitutions, and modifications may be made to Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. perform substantially similar functions or achieve substantially similar results as the corresponding embodiments described herein, as those skilled in the art will readily appreciate from this disclosure; Any disclosure, process, machine, manufacture, composition of matter, means, method, or step, now existing or later developed, may be utilized in accordance with the present disclosure. Accordingly, the appended claims are intended to cover any such process, machine, manufacture, composition of matter, means, methods or steps described above. Moreover, each claim constitutes a separate embodiment, and the combination of each claim and the embodiment is the protection scope of the present invention.

1 Radio System 10 Transmitting Terminal Device 20 Receiving Terminal Device 100 First Coil Module 102 Coil Assembly 102A Coil Assembly 102B Coil Assembly 1021 First Surface 1022 Second Surface 1023 Third Surface 103 First Terminal Contact 1031 Extension Wire 104 adhesive layer 105 second terminal contact 106 magnetic conductive plate 108 substrate 110 coil structure 111 first metal wire 1111 first end 1112 second end 112 second metal wire 1121 first end 1122 2 ends 1124 hollow region 114 connection members 150, 150A, 150B capacity adjustment unit 152 closed loop 1521 connection end point 1522 first closed wire 1523 second closed wire 153 variable capacitor 154 connection wire 200 second coil module 302 coil assembly 302A coil assembly 3021 first surface 3022 second surface 304 first metal wire 3041 first end 3043 second end 306 second metal wire 3061 first end 3063 second end MC , MC1, MC2, MC3, MC5, MC6 metal connector

Claims (12)

a first coil;
a second coil configured to sense the first coil; and connected to the first coil and comprising at least one closed loop and a connecting line, the connecting line connecting the first coil and the A radio system including a capacity regulation unit connected during a closed loop. 2. The wireless system of claim 1, wherein said closed loop has only one connection end point adapted to be connected to said connection line. 2. The wireless system of claim 1, wherein said first coil comprises a helical structure, said helical structure forming a hollow region, and said closed loop disposed in said hollow region. 2. The wireless system of claim 1, wherein said first coil includes a helical structure, said helical structure forming a hollow region, and said closed loop is disposed outside said hollow region. 5. The wireless system of claim 4, wherein said closed loop has at least two turns. The first coil includes a first metal wire and a second metal wire arranged on a first surface and a second surface, respectively, and the winding direction of the first metal wire is the second coil. 2. The radio system according to claim 1, wherein the winding direction of the metal wire is opposite to the winding direction of the metal wire. The first metal line has a first end, the second metal line has a first end and a second end, the first end of the first metal line 7. The wireless system of claim 6, wherein a section is electrically connected to said first end of said second metal line, said first metal line being connected in series with said second metal line. 8. The wireless system of claim 7, wherein said closed loop is connected to said second end of said second metal line by said connecting line. 2. The wireless system of claim 1, wherein said first coil comprises a signal transmission coil. 2. The wireless system of Claim 1, wherein said first coil comprises a signal receiving coil. 2. The closed loop of claim 1, wherein the closed loop includes a first closed wire and a second closed wire, the second closed wire being located on the first closed wire and not connected to the first closed wire. radio system. A first metal wire disposed on a first surface and having a first helical structure and a second helical structure disposed on a second surface and electrically connected to the first metal wire and at least one closed loop and connecting wire connected to said first coil, said connecting wire connecting said first coil and said closed loop. A wireless device including a capacity adjustment unit connected therebetween.

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