CN114512808A - A metal frame of an electronic device, an antenna device and an electronic device - Google Patents

Abstract

The present application discloses a metal frame of an electronic device, an antenna device and an electronic device. The metal frame of the electronic device includes: a frame body; the frame body includes: an antenna part and a non-antenna part, the material of the antenna part is metal, and the The antenna part is used as an NFC antenna, and the NFC antenna is also used as other communication antennas under different trigger conditions; a separation groove is formed on the frame body, and the separation groove is located in the antenna part and the non-antenna part At the junction of the electronic device, the separation groove is used to fill the insulator; by using a part of the metal frame as the NFC antenna, when the electronic device is attached to the object, whether it is attached to the object on the front or the back, it can be touched or approached as an NFC antenna Therefore, the application scenarios of NFC of electronic devices are more abundant.

Description

Metal frame, antenna device and electronic device for electronic equipment

technical field

The present application relates to the technical field of electronic equipment, and in particular, to a metal frame of an electronic equipment, an antenna device and an electronic equipment.

Background technique

With the development of electronic devices, the functions of the electronic devices are becoming more and more abundant, among which, the NFC (Near Field Communication, short-range wireless communication) function is widely used by current electronic devices.

The realization of the NFC function requires two NFC antennas to receive or send signals. In the existing electronic equipment, at least one NFC antenna is set on the back cover of the battery of the electronic equipment. When the user uses the NFC function, the back cover of the electronic equipment is It can be attached to or close to the target object.

However, the setting of the position of the NFC antenna of the existing electronic device makes the NFC function only possible when the rear shell of the electronic device is attached to or is close to the target object, thus limiting the usage scenarios of the NFC.

SUMMARY OF THE INVENTION

In view of this, the present application provides a metal frame of an electronic device, an antenna device and an electronic device, so as to solve the problem that the existing electronic device uses more and more hardware, resulting in a relatively tight internal space, and the problem of the electronic device's The NFC function can only be realized when the back shell of the electronic device is attached to or close to the target object, which limits the use of NFC.

A first aspect of the present application provides a metal frame of an electronic device, comprising: a frame body; the frame body includes: an antenna part, a non-antenna part and an insulator, the material of the antenna part is metal, and the antenna part serves as an NFC antenna , the NFC antenna is also used as another communication antenna when receiving a non-NFC signal; the frame body is provided with a separation groove, and the separation groove is located at the junction of the antenna part and the non-antenna part, separating The grooves are used to fill insulators.

Wherein, the antenna part is the top of the frame body.

Wherein, the NFC antenna part is also used as a WLAN antenna when receiving a WLAN drive signal; or, used as a GPS antenna when receiving a GPS drive signal; or, used as a WWAN antenna when receiving a WWAN drive signal .

The above-mentioned metal frame of the present application uses a part of the metal frame as the NFC antenna, so that when the electronic device is attached to the object, whether it is attached to the object on the front or the back, it can touch or approach the metal frame as the NFC antenna, thereby The NFC function is realized, thus enriching the application scenarios of the NFC of the electronic device.

The above-mentioned metal frame of the present application also uses a part of the metal frame as the NFC antenna, so that the NFC antenna part that should be located inside the electronic device can be transferred to the metal frame without adding external hardware devices of the electronic device, so that the original The space in the part where the NFC antenna is arranged inside the electronic device is free, thus alleviating the problem that the internal space of the electronic device is relatively tight.

The above-mentioned metal frame of the present application also uses the antenna part of the metal frame as other communication antennas under other trigger conditions, so that the NFC antenna and other communication antennas can share the antenna part of the metal frame, so that the external hardware equipment of the electronic device can be added without increasing. On the basis of the original electronic device, other antenna parts that should be located inside the electronic device are transferred to the metal frame, so that the space for other antenna parts in the original electronic device is freed, thus further easing the problem of tight internal space of the electronic device.

A second aspect of the present application provides an antenna device for an electronic device, including: the above-mentioned metal frame; the antenna device further includes: an NFC antenna body, an NFC impedance matching module, and an antenna matching module disposed within the frame body of the metal frame; the One end of the antenna part of the metal frame is a frame feeding point, which is used for feeding power to the NFC chip; the NFC impedance matching module is used for electrical connection with the NFC chip, and is used for matching the impedance of the NFC antenna body and the antenna part of the metal frame; The antenna matching module is respectively electrically connected with the NFC impedance matching module, the NFC antenna body and the antenna part of the metal frame, and is used for matching the NFC antenna body and the antenna part of the metal frame for the NFC impedance matching module; the antenna part passes the NFC impedance The matching module and the antenna matching module are fed with the NFC chip.

Wherein, the NFC impedance matching module includes: a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor and a tenth capacitor; The first end of the first capacitor is electrically connected to the Rxp port and the Tx1 port of the NFC chip, and the second end is electrically connected to the first end of the seventh capacitor and the ninth capacitor. The Rxp port is a differential input end of the NFC chip, and the Tx1 The port is a differential output end of the NFC chip; the first end of the second capacitor is electrically connected to the Rxp port and the Tx1 port of the NFC chip, and is connected in parallel with the first capacitor, and the second end is connected to the first end of the seventh capacitor and the ninth capacitor Electrical connection; the first end of the third capacitor is electrically connected to the RxN port and the Tx2 port of the NFC chip, the second end is electrically connected to the first end of the eighth capacitor and the tenth capacitor, and the RxN port is another differential input end of the NFC chip , the Tx2 port is another differential input end of the NFC chip; the first end of the fourth capacitor is electrically connected to the RxN port and the Tx2 port of the NFC chip, and is connected in parallel with the third capacitor, and the second end is connected to the eighth capacitor and the tenth capacitor. The first end is electrically connected; the first end of the fifth capacitor is electrically connected to the Tx1 port and the Rxp port of the NFC chip, and is connected in parallel with the first capacitor and the second capacitor, and the second end is grounded; the first end of the sixth capacitor is connected to the NFC chip. The Tx2 port is electrically connected, and is connected in parallel with the third capacitor, the fourth capacitor, and the fifth capacitor, and the second terminal is grounded; the seventh capacitor is connected in series with the first capacitor and the second capacitor, and the second terminal is grounded; the eighth capacitor is connected to the third The capacitor and the fourth capacitor are connected in series, and the second terminal is grounded; the ninth capacitor is connected in series with the first capacitor and the second capacitor, and the seventh capacitor is connected in parallel, and the second terminal is connected to the ground; the tenth capacitor is connected in series with the third capacitor and the fourth capacitor , which is connected in parallel with the eighth capacitor, and the second terminal is grounded.

The antenna matching module includes: a first wire and a second wire; the first end of the first wire is electrically connected to the first ends of the seventh capacitor and the ninth capacitor, and is connected to the first and second capacitors. The second end is electrically connected, and the second end is electrically connected to the antenna part of the metal frame; the first end of the second wire is electrically connected to the first ends of the eighth capacitor and the tenth capacitor, and is connected to the third capacitor and the first end of the tenth capacitor. The second end of the four capacitors is electrically connected, and the second end is electrically connected to the NFC antenna body.

The antenna matching module includes: a first high-frequency inductor and a second high-frequency inductor; the first end of the first high-frequency inductor is electrically connected to the first ends of the seventh capacitor and the ninth capacitor, and is connected to the first The capacitor and the second end of the second capacitor are electrically connected, and the second end is electrically connected to the antenna part of the metal frame; the first end of the second high-frequency inductor is electrically connected to the second ends of the eighth capacitor and the tenth capacitor , and is electrically connected to the second end of the third capacitor and the fourth capacitor, and the second end is electrically connected to the NFC antenna body.

Wherein, the antenna matching module includes: a first resistor and a second resistor; the first end of the first resistor is electrically connected to the first ends of the seventh capacitor and the ninth capacitor, and is connected to the first end of the first capacitor and the second capacitor. The second end is electrically connected, and the second end is electrically connected to the antenna part of the metal frame; the first end of the second resistor is electrically connected to the first end of the eighth capacitor and the tenth capacitor, and is connected to the third capacitor and the fourth capacitor. The second end of the capacitor is electrically connected, and the second end is electrically connected to the NFC antenna body.

Wherein, the NFC antenna body is a loop antenna, which is integrated on a flexible circuit board or made of modified plastics containing organic metal composites or any metal material.

In the above-mentioned antenna device of the present application, by using a part of the metal frame as the NFC antenna, when the electronic device is attached to the object, no matter whether it is attached to the object on the front or the back, it can touch or approach the metal frame as the NFC antenna, thereby The NFC function is realized, thus enriching the application scenarios of the NFC of the electronic device.

A third aspect of the present application provides an electronic device, including the metal frame of the electronic device described in any one of the above, or an antenna device including the electronic device described in any one of the above.

In the above-mentioned electronic device of the present application, a part of the metal frame is used as the NFC antenna, so that when the electronic device is attached to the object, whether it is attached to the object on the front or the back, it can touch or approach the metal frame as the NFC antenna, thereby The NFC function is realized, thus enriching the application scenarios of the NFC of the electronic device.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic structural diagram of a metal frame of an electronic device according to an embodiment of the present application;

2 is a schematic structural diagram of an antenna device of an electronic device according to an embodiment of the present application;

3 is a circuit diagram of an antenna device of an electronic device according to an embodiment of the present application;

4 is a second circuit diagram of the antenna device of the electronic device according to the embodiment of the present application;

FIG. 5 is a third circuit diagram of the antenna device of the electronic device according to the embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of this application. In the case of no conflict, the following various embodiments and their technical features can be combined with each other.

Referring to FIG. 1 , an embodiment of the present application provides a metal frame of an electronic device. The metal frame includes: a frame body 1 ; the frame body 1 includes an antenna part 2 , a non-antenna part 3 and an insulator 4 , and the material of the antenna part 2 is metal , the antenna part 2 is used as an NFC antenna, and the NFC antenna is also used as other communication antennas when receiving a non-NFC driving signal; the frame body 1 is provided with a separation groove, and the separation groove is located at the junction of the antenna part 2 and the non-antenna part 3, The insulator 4 is filled in the separation groove.

In this embodiment, the insulator 4 can be plastic, and in other embodiments, the insulator can also be ceramic, glass, etc., which can be used as the material of the frame of the electronic device.

In this embodiment, the NFC antenna can realize the NFC function after receiving the NFC driving signal. Therefore, by using a part of the metal frame as the NFC antenna, when the electronic device is attached to the object, whether it is attached to the object on the front or the back, Both can touch or approach the metal frame as the NFC antenna, so as to realize the NFC function, thus enriching the application scenarios of NFC for electronic devices.

In addition, by using a part of the metal frame as the NFC antenna, the NFC antenna part that should be located inside the electronic device can be transferred to the metal frame without adding external hardware devices of the electronic device, so that the NFC antenna is set inside the original electronic device. Part of the space is freed up, thus alleviating the problem that the internal space of the electronic device is relatively tight.

In this embodiment, the antenna part 2 is the top of the frame body 1; the top of the frame body 1 is the top of the electronic device. Since the chips and the main board of the electronic device are arranged on the top of the electronic device, the battery is arranged on the top of the electronic device. Therefore, the frame body 1 at the top is used as the antenna part 2, which can reduce the signal transmission distance between the chip and the antenna part 2, thereby reducing the transmission loss of the signal.

In other embodiments, the antenna part may also be other parts of the frame body.

In this embodiment, the antenna part 2 is used as an NFC antenna, and when the antenna part 2 receives other driving signals, it can also be used as other communication antennas. For example, the NFC antenna is used as a WLAN antenna when receiving a WLAN driving signal; When receiving a GPS driving signal, it acts as a GPS antenna; when receiving a WWAN driving signal, the NFC antenna acts as a WWAN antenna.

By using the antenna part 2 of the metal frame as other communication antennas under other trigger conditions, the NFC antenna and other communication antennas can share the antenna part 2 of the metal frame, so that the external hardware device of the electronic device can be used without adding external hardware devices. The other antenna parts that should be located inside the electronic device are transferred to the metal frame, so that the space where other antenna parts are arranged inside the original electronic device is freed, thus further relieving the problem that the internal space of the electronic device is relatively tight.

Please refer to FIG. 2 and FIG. 3 , an embodiment of the present application further provides an antenna device for an electronic device, including the metal frame in any of the above implementations, and further comprising: an NFC antenna body 2 disposed within the frame body of the metal frame, an NFC Impedance matching module 3 and antenna matching module 4; one end of the antenna part 1 of the metal frame is a frame feeding point, which is used for feeding power to the NFC chip 5; please refer to FIG. 3, the NFC impedance matching module 3 is used for electrical connection with the NFC chip 5 , used to match the impedance of the NFC antenna body 2 and the antenna part 1 of the metal frame; the antenna matching module 4 is electrically connected to the NFC impedance matching module 3 and the NFC antenna body 2 and the antenna part 1 of the metal frame respectively, and is used for NFC impedance matching. The module 3 matches the NFC antenna body 2 and the antenna part 1 of the metal frame; the antenna part 1 is fed through the NFC impedance matching module 3 and the antenna matching module 4 and the NFC chip 5 .

In some embodiments, referring to FIG. 3 , the NFC impedance matching module 3 includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor Capacitor C7, eighth capacitor C8, ninth capacitor C9 and tenth capacitor C10.

The first end of the first capacitor C1 is used for electrical connection with the Rxp port and the Tx1 port of the NFC chip 5 , the second end is electrically connected with the first ends of the seventh capacitor C7 and the ninth capacitor C9 , and the Rxp port is one of the NFC chip 5 . Differential input end, the Tx1 port is a differential output end of the NFC chip 5; the first end of the second capacitor C2 is electrically connected to the Rxp port and the Tx1 port of the NFC chip 5, and is connected in parallel with the first capacitor C1, and the second end is connected to the seventh The first terminals of the capacitor C7 and the ninth capacitor C9 are electrically connected; the first terminal of the third capacitor C3 is electrically connected to the RxN port and the Tx2 port of the NFC chip 5, and the second terminal is electrically connected to the first terminal of the eighth capacitor C8 and the tenth capacitor C10 The terminals are electrically connected, the RxN port is another differential input terminal of the NFC chip 5, the Tx2 port is another differential input terminal of the NFC chip 5; the first terminal of the fourth capacitor C4 is electrically connected to the RxN port and the Tx2 port of the NFC chip 5, And it is connected in parallel with the third capacitor C3, and the second end is electrically connected to the first end of the eighth capacitor C8 and the tenth capacitor C10; the first end of the fifth capacitor C5 is electrically connected to the Tx1 port and the Rxp port of the NFC chip 5, and is electrically connected to the The first capacitor C1 and the second capacitor C2 are connected in parallel, and the second terminal is grounded; the first terminal of the sixth capacitor C6 is electrically connected to the Tx2 port of the NFC chip 5, and is connected in parallel with the third capacitor C3, the fourth capacitor C4, and the fifth capacitor C5. , the second terminal is grounded; the seventh capacitor C7 is connected in series with the first capacitor C1 and the second capacitor C2, and the second terminal is grounded; the eighth capacitor C8 is connected in series with the third capacitor C3 and the fourth capacitor C4, and the second terminal is grounded; The ninth capacitor C9 is connected in series with the first capacitor C1 and the second capacitor C2, and is connected in parallel with the seventh capacitor C7, and the second terminal is grounded; the tenth capacitor C10 is connected in series with the third capacitor C3 and the fourth capacitor C4, and is connected with the eighth capacitor C8 connected in parallel, and the second terminal is grounded.

In addition, the first ends of the first capacitor C1 , the second capacitor C2 and the fifth capacitor C5 are electrically connected to the Rxp port of the NFC chip through the eleventh capacitor C11 and the third resistor R3 connected in series, and are connected to the NFC chip through the third inductor L3 The Tx1 port of the chip is electrically connected; the first ends of the third capacitor C3, the fourth capacitor C4 and the sixth capacitor C6 are electrically connected to the Tx2 port of the NFC chip through the fourth inductor L4, and the twelfth capacitor C12 and the first end of the NFC chip are electrically connected through the series connection. The four resistors R4 are electrically connected to the Rxp port of the NFC chip. In this embodiment, the antenna matching module 4 may include: a first resistor R1 and a second resistor R2; the first end of the first resistor R1 is electrically connected to the first ends of the seventh capacitor C7 and the ninth capacitor C9, and is electrically connected to the first end of the seventh capacitor C7 and the ninth capacitor C9. The second ends of a capacitor C1 and a second capacitor C2 are electrically connected, and the second ends are electrically connected to the antenna part 1 of the metal frame; the first end of the second resistor R2 is electrically connected to the first ends of the eighth capacitor C8 and the tenth capacitor C10 , and is electrically connected to the second ends of the third capacitor C3 and the fourth capacitor C4 , and the second ends are electrically connected to the NFC antenna body 2 .

In the antenna matching module set up in this embodiment, since the antenna part of the metal frame is used as a different communication antenna under different driving signals, when the antenna part of the metal frame is used as an NFC antenna, it will not receive the driving signal of other communication antennas Therefore, there is no need to set a ground terminal in the antenna matching module to derive the current of other communication antenna driving signals, so the ground terminal is not used in the antenna matching module, which reduces the space occupied by the antenna device inside the electronic device.

Referring to FIG. 4 , in other embodiments, the antenna matching module 4 may further include: a first wire L1 and a second wire L2 ; the first end of the first wire L1 and the first ends of the seventh capacitor C7 and the ninth capacitor C9 It is electrically connected, and is electrically connected to the second ends of the first capacitor C1 and the second capacitor C2, and the second end is electrically connected to the antenna part 1 of the metal frame; the first end of the second wire L2 is electrically connected to the eighth capacitor C8 and the tenth capacitor The first end of C10 is electrically connected to the second ends of the third capacitor C3 and the fourth capacitor C4 , and the second end is electrically connected to the NFC antenna body 2 .

The antenna matching module set in this way in other embodiments is suitable for the case where the distance between the antenna part of the metal frame and the NFC antenna body is close enough, that is, the transmission of the NFC driving signal will not decay or generate noise current, or the NFC driving signal will decay by using wire transmission. Or the noise current will not affect the normal reception and transmission of the NFC drive signal. In this case, it is only necessary to use the wire to transmit the NFC drive signal, and no other components are required to process the NFC drive signal, thus reducing the electronic equipment. The components of the antenna device are used, thereby reducing the space occupied by the antenna device inside the electronic device.

Referring to FIG. 5, in other embodiments, the antenna matching module 4 may further include: a first high-frequency inductor L1 and a second high-frequency inductor L2; the first end of the first high-frequency inductor L1 and the seventh capacitor C7, the ninth The first end of the capacitor C9 is electrically connected to the second end of the first capacitor C1 and the second capacitor C2, and the second end is electrically connected to the antenna part 1 of the metal frame; the first end of the second high-frequency inductor L2 is electrically connected to The second ends of the eighth capacitor C8 and the tenth capacitor C10 are electrically connected to the second ends of the third capacitor C3 and the fourth capacitor C4 , and the second ends are electrically connected to the NFC antenna body 2 .

The antenna matching module set in this way in other embodiments is suitable for the case where the distance between the antenna part of the metal frame and the NFC antenna body is relatively far. The antenna matching module of other embodiments uses high-frequency inductors, which can be processed during the transmission process of the NFC driving signal, so that the transmission and reception of the NFC driving signal can be carried out normally, so as to better optimize the electronic The location of the device's antenna device inside the electronic device, thereby optimizing the space utilization inside the electronic device.

In this embodiment, the NFC antenna body 2 is a loop antenna, which is integrated on a flexible circuit board or made of modified plastic containing an organic metal compound or any metal material.

In the above-mentioned antenna device of the present application, by using a part of the metal frame as the NFC antenna, when the electronic device is attached to the object, no matter whether it is attached to the object on the front or the back, it can touch or approach the metal frame as the NFC antenna, thereby The NFC function is realized, thus enriching the application scenarios of the NFC of the electronic device.

The above-mentioned antenna device of the present application also uses a part of the metal frame as the NFC antenna, so that part of the NFC antenna part that should be located inside the electronic device can be transferred to the metal frame without adding external hardware equipment of the electronic device. The space for 1 part of the NFC antenna part inside the original electronic device is freed up, thus alleviating the problem that the internal space of the electronic device is relatively tight.

In the above-mentioned antenna device of the present application, by using the antenna part 1 of the metal frame as another communication antenna under other trigger conditions, the NFC antenna and other communication antennas can share the antenna part 1 of the metal frame, so that the external hardware of the electronic device can be added without increasing the number of external hardware. On the basis of the device, the other antenna parts that should be located inside the electronic device are transferred to the metal frame, so that the space where the other antenna parts are set in the original electronic device is free, thus further relieving the tightness of the internal space of the electronic device. The problem.

Embodiments of the present application further provide an electronic device, including the above-mentioned metal frame or antenna device.

In the above-mentioned electronic device of the present application, a part of the metal frame is used as the NFC antenna, so that when the electronic device is attached to the object, whether it is attached to the object on the front or the back, it can touch or approach the metal frame as the NFC antenna, thereby The NFC function is realized, thus enriching the application scenarios of the NFC of the electronic device.

In the above-mentioned electronic device of the present application, by using a part of the metal frame as the NFC antenna, the part of the NFC antenna that should be located inside the electronic device can be transferred to the metal frame without adding external hardware devices of the electronic device, so that the original The space in the part where the NFC antenna is arranged inside the electronic device is free, thus alleviating the problem that the internal space of the electronic device is relatively tight.

The above-mentioned electronic device in the present application also uses the antenna part of the metal frame as another communication antenna under other triggering conditions, so that the NFC antenna and other communication antennas can share the antenna part of the metal frame, so that the external hardware equipment of the electronic device can be saved without increasing the number of times. On the basis, the other antenna parts that should be located inside the electronic device are transferred to the metal frame, so that the space for other antenna parts in the original electronic device is freed, thus further alleviating the problem of tight internal space of the electronic device.

It should be noted that the electronic devices described in this application may be, but are not limited to, such as mobile phones, tablet computers, notebook computers, handheld computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, Any of mobile terminals such as PMP), navigation devices, wearable devices, smart bracelets, and pedometers, as well as fixed terminals such as digital TVs and desktop computers.

While the application has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art based on a reading and understanding of this specification and the accompanying drawings. This application includes all such modifications and variations and is limited only by the scope of the appended claims. In particular with respect to the various functions performed by the above-described components, the terms used to describe such components are intended to correspond to any component that performs the specified function of the component (eg, which is functionally equivalent) (eg, which is functionally equivalent) (unless otherwise indicated) , even if it is not structurally equivalent to the disclosed structure that performs the functions of the exemplary implementations of the specification shown herein.

That is, the above descriptions are only the embodiments of the present application, which are not intended to limit the scope of the patent of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, such as the technical features between the embodiments Combining with each other, or directly or indirectly used in other related technical fields, are also included in the scope of patent protection of this application.

In addition, in the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front" , "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and other indicated orientation or positional relationships are based on the drawings The orientation or positional relationship is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the application . In addition, for structural elements with the same or similar characteristics, the present application may use the same or different reference numerals to identify them. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more features. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

It is to be understood that one of ordinary skill in the art can realize that the present application may be practiced without the use of these specific details. In other instances, well-known structures and procedures have not been described in detail so as not to obscure the description of the present application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Claims (10)

1. A metal bezel of an electronic device, comprising:

a frame body;

the frame body includes: the antenna part is made of metal and serves as an NFC antenna, and the NFC antenna is also used as other communication antennas when receiving non-NFC driving signals; the frame body is provided with a separation groove, the separation groove is located at the joint of the antenna part and the non-antenna part, and the separation groove is filled with the insulator.

2. The metal bezel of an electronic device as recited in claim 1,

the antenna part is the top of the frame body.

3. The metal bezel of an electronic device as recited in claim 1,

the NFC antenna part is also used as a WLAN antenna when receiving a WLAN driving signal;

or, is used as the GPS antenna when receiving the GPS driving signal;

or, to act as a WWAN antenna when receiving a WWAN driving signal.

4. An antenna device of an electronic device, comprising the metal bezel of any one of claims 1-3;

the antenna device further includes: the NFC antenna comprises an NFC antenna body, an NFC impedance matching module and an antenna matching module, wherein the NFC antenna body, the NFC impedance matching module and the antenna matching module are arranged in the range of a metal frame body;

one end of the antenna part of the metal frame is a frame feed point and is used for feeding electricity with the NFC chip;

the NFC impedance matching module is electrically connected with the NFC chip and used for matching the impedance of the NFC antenna body and the impedance of the antenna part of the metal frame;

the antenna matching module is respectively and electrically connected with the NFC impedance matching module, the NFC antenna body and the antenna part of the metal frame and is used for matching the NFC impedance matching module with the NFC antenna body and the antenna part of the metal frame;

the antenna part feeds power to the NFC chip through the NFC impedance matching module and the antenna matching module.

5. The antenna device of the electronic device according to claim 4,

the NFC impedance matching module includes: the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor, the eighth capacitor, the ninth capacitor and the tenth capacitor;

the first end of the first capacitor is used for being electrically connected with an Rxp port and a Tx1 port of the NFC chip, the second end of the first capacitor is electrically connected with first ends of a seventh capacitor and a ninth capacitor, the Rxp port is a differential input end of the NFC chip, and the Tx1 port is a differential output end of the NFC chip;

a first end of the second capacitor is electrically connected with an Rxp port and a Tx1 port of the NFC chip and is connected with the first capacitor in parallel, and a second end of the second capacitor is electrically connected with first ends of the seventh capacitor and the ninth capacitor;

the first end of the third capacitor is electrically connected with an RxN port and a Tx2 port of the NFC chip, the second end of the third capacitor is electrically connected with the first ends of the eighth capacitor and the tenth capacitor, the RxN port is another differential input end of the NFC chip, and the Tx2 port is another differential input end of the NFC chip;

a first end of the fourth capacitor is electrically connected with an RxN port and a Tx2 port of the NFC chip and is connected with the third capacitor in parallel, and a second end of the fourth capacitor is electrically connected with first ends of the eighth capacitor and the tenth capacitor;

a first end of the fifth capacitor is electrically connected with a Tx1 port and an Rxp port of the NFC chip, and is connected with the first capacitor and the second capacitor in parallel, and a second end of the fifth capacitor is grounded;

a first end of the sixth capacitor is electrically connected with a Tx2 port of the NFC chip, and is connected with the third capacitor, the fourth capacitor and the fifth capacitor in parallel, and a second end of the sixth capacitor is grounded;

the seventh capacitor is connected with the first capacitor and the second capacitor in series, and the second end of the seventh capacitor is grounded;

the eighth capacitor is connected in series with the third capacitor and the fourth capacitor, and the second end of the eighth capacitor is grounded;

the ninth capacitor is connected in series with the first capacitor and the second capacitor, is connected in parallel with the seventh capacitor, and has a second end grounded;

the tenth capacitor is connected in series with the third capacitor and the fourth capacitor, is connected in parallel with the eighth capacitor, and has a second end grounded.

6. The antenna device of the electronic device according to claim 5,

the antenna matching module includes:

a first conductive line and a second conductive line;

the first end of the first lead is electrically connected with the first ends of the seventh capacitor and the ninth capacitor, and is electrically connected with the second ends of the first capacitor and the second capacitor, and the second end is electrically connected with the antenna part of the metal frame;

and the first end of the second lead is electrically connected with the first ends of the eighth capacitor and the tenth capacitor, and is electrically connected with the second ends of the third capacitor and the fourth capacitor, and the second end is electrically connected with the NFC antenna body.

7. The antenna device of the electronic device according to claim 5,

the antenna matching module includes:

a first high-frequency inductor and a second high-frequency inductor;

the first end of the first high-frequency inductor is electrically connected with the first ends of the seventh capacitor and the ninth capacitor, and is electrically connected with the second ends of the first capacitor and the second capacitor, and the second end is electrically connected with the antenna part of the metal frame;

and the first end of the second high-frequency inductor is electrically connected with the second ends of the eighth capacitor and the tenth capacitor, and is electrically connected with the second ends of the third capacitor and the fourth capacitor, and the second end is electrically connected with the NFC antenna body.

8. The antenna device of the electronic device according to claim 5,

the antenna matching module includes:

a first resistor and a second resistor;

the first end of the first resistor is electrically connected with the first ends of the seventh capacitor and the ninth capacitor, and is electrically connected with the second ends of the first capacitor and the second capacitor, and the second end is electrically connected with the antenna part of the metal frame;

and the first end of the second resistor is electrically connected with the first ends of the eighth capacitor and the tenth capacitor, and is electrically connected with the second ends of the third capacitor and the fourth capacitor, and the second end is electrically connected with the NFC antenna body.

9. The antenna device of the electronic device according to claim 4,

the NFC antenna body is a loop antenna and is integrated on a flexible circuit board or made of modified plastics containing organic metal compounds or any metal material.

10. An electronic device, characterized in that it comprises a metal bezel of an electronic device according to any of claims 1-3, or an antenna arrangement of an electronic device according to any of claims 4-9.

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