CN216903322U

CN216903322U - Antenna device, circuit board assembly and electronic equipment

Info

Publication number: CN216903322U
Application number: CN202220742126.6U
Authority: CN
Inventors: 曹廷友
Original assignee: Realme Mobile Telecommunications Shenzhen Co Ltd
Current assignee: Realme Mobile Telecommunications Shenzhen Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-05
Anticipated expiration: 2032-03-31

Abstract

The application provides an antenna device, a circuit board assembly and an electronic device. The antenna arrangement comprises a first functional antenna and an NFC antenna. The first functional antenna comprises a first functional chip and a first functional radiator, the first functional radiator comprises a main body radiation section and an extension radiation section which are connected, the first functional chip is electrically connected with the main body radiation section and used for exciting the main body radiation section to receive and transmit a first antenna signal, and the width of the extension radiation section is smaller than that of the main body radiation section. The NFC antenna comprises an NFC chip, a first end electric connection body radiation section of the NFC chip, a second end electric connection extension radiation section of the NFC chip, a closed loop formed by the NFC chip, the body radiation section and the extension radiation section, and the NFC chip is used for exciting a body radiation section and extending the radiation section to receive and transmit NFC signals. The circuit board assembly and the electronic equipment comprise the antenna device. The application provides an antenna device, circuit board component and electronic equipment's better and the overall arrangement degree of difficulty of NFC performance reduces.

Description

Antenna device, circuit board assembly and electronic equipment

Technical Field

The application relates to the technical field of communication, in particular to an antenna device, a circuit board assembly and an electronic device.

Background

Near Field Communication (NFC) is an emerging technology, and devices using the NFC technology can perform data exchange, mobile payment, electronic ticketing, door access, mobile identity recognition, anti-counterfeiting, and the like when being close to each other. In the related art, the NFC antenna and other antennas are independently arranged in the device, the NFC performance of the device is poor, and the difficulty in arranging the plurality of antennas in the device is high.

SUMMERY OF THE UTILITY MODEL

The application provides an antenna device, a circuit board assembly and an electronic device with good NFC performance and capable of reducing layout difficulty.

In one aspect, the present application provides an antenna apparatus, comprising:

the first functional antenna comprises a first functional chip and a first functional radiator, wherein the first functional radiator comprises a main radiation section and an extension radiation section which are connected, the first functional chip is electrically connected with the main radiation section and is used for exciting the main radiation section to receive and transmit a first antenna signal, and the width of the extension radiation section is smaller than that of the main radiation section; and

the NFC antenna comprises an NFC chip, wherein a first end of the NFC chip is electrically connected with the main body radiation section, a second end of the NFC chip is electrically connected with the extension radiation section, the NFC chip is used for exciting the main body radiation section and the extension radiation section to receive and transmit NFC signals, and the extension radiation section forms a closed loop.

On the other hand, this application still provides a circuit board subassembly, at least one circuit board and antenna device, first function chip the NFC chip all locates on the circuit board, the circuit board is including the ground of reference, first function radiator with form the headroom region between the ground of reference.

In another aspect, the present application further provides an electronic device, which includes a housing and the circuit board assembly, wherein the first functional radiator is disposed on the housing.

The antenna device comprises a first functional antenna and an NFC antenna, wherein the first functional antenna comprises a first functional chip and a first functional radiator, and the NFC chip of the NFC antenna is electrically connected with a main body radiation section of the first functional radiator, so that the NFC antenna and the first functional antenna can share the main body radiation section, the size of the antenna device is favorably reduced, the NFC chip is also electrically connected with an extension radiation section of the first functional radiator, the effective electrical length of the NFC antenna is prolonged, the inductance is enhanced under excitation of the NFC chip, and the NFC performance of the antenna device is conveniently improved; in addition, because the width of the extension radiation section is smaller than that of the main body radiation section, the size of the antenna device can be further reduced, the layout difficulty of the antenna device in the electronic equipment can be reduced, and other devices in the electronic equipment can be arranged or avoided in the width direction of the extension radiation section. The circuit board assembly and the electronic equipment comprise the antenna device, so that the NFC performance is good and the layout difficulty is small.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of the electronic device of FIG. 1;

fig. 3 is a schematic plan view of an electronic device including a circuit board assembly and an antenna device according to an embodiment of the present application;

fig. 4 is a schematic plan view of a circuit board assembly according to an embodiment of the present application;

fig. 5 is a schematic plan view of an antenna device according to an embodiment of the present application;

fig. 6 is a schematic plan view of a first functional radiator in the antenna device shown in fig. 5;

fig. 7 is a schematic diagram of a first functional radiator in the antenna device of fig. 5 including two feed terminals and a ground terminal;

fig. 8 is a schematic diagram of a first functional radiator in the antenna arrangement of fig. 5 including a feed terminal and a ground terminal;

fig. 9 is a schematic plan view of the antenna device shown in fig. 5 further including an NFC coil electrically coupled between the NFC chip and the radiating section of the body;

fig. 10 is a schematic plan view of the antenna device of fig. 5 further including an NFC coil electrically coupled between the NFC chip and the extended radiating section;

fig. 11 is a schematic structural diagram of a body coil portion of the NFC coil in the antenna device shown in fig. 9;

fig. 12 is another schematic structural diagram of a body coil portion of the NFC coil in the antenna device shown in fig. 9;

fig. 13 is a schematic diagram illustrating another structure of a body coil portion of the NFC coil in the antenna device shown in fig. 9;

fig. 14 is a schematic plan view of the NFC chip of the antenna device shown in fig. 9 located in the coil portion of the body;

fig. 15 is a schematic plan view of the first functional antenna of the antenna device of fig. 14 further including a capacitor;

fig. 16 is a plan view of the antenna device of fig. 15 further including a first matching circuit and a second matching circuit;

fig. 17 is a schematic plan view of the antenna assembly of fig. 16 further including a second functional antenna;

fig. 18 is a schematic plan view of the antenna assembly of fig. 17 in an electronic device;

fig. 19 is a schematic plan view of the antenna assembly of fig. 17 further including a SAR sensor;

fig. 20 is another schematic plan view of the antenna assembly of fig. 17 further including a SAR sensor;

FIG. 21 is a schematic plan view of the antenna assembly of FIG. 20 in an electronic device;

fig. 22 is a schematic plan view of the second functional antenna of the antenna device shown in fig. 20 further including a capacitor.

Detailed Description

The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described herein are only a few embodiments and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive effort belong to the protection scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. One skilled in the art can explicitly and implicitly appreciate that the embodiments described herein can be combined with other embodiments.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example: an assembly or device including one or more components is not limited to one or more of the components listed, but may optionally include one or more components not listed but inherent to the illustrated product or to which it should be based on the described functionality.

Referring to fig. 1 and fig. 2, in which fig. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present disclosure. Fig. 2 is an exploded view of the electronic device 1000 shown in fig. 1. The electronic device 1000 may be a device with a communication function, such as a mobile phone, a tablet computer, a watch, a bracelet, glasses, a sound box, a Customer Premise Equipment (CPE), and the like. The embodiment of the application takes a mobile phone as an example. The electronic device 1000 includes a housing 200 and a circuit board assembly 100.

Specifically, the housing 200 includes a center frame 21 and a rear cover 22. The material of the middle frame 21 may be one of metal, alloy, carbon fiber, plastic, composite material, etc. The material of the rear cover 22 may be one of metal, alloy, carbon fiber, plastic, glass, ceramic, and the like. The middle frame 21 and the rear cover 22 may be integrally formed or connected together.

The electronic device 1000 may further include a display screen 300, a camera module 400, and a battery 500. The Display screen 300 may be one of a Liquid Crystal Display (LCD), a Cathode Ray Tube (CRT) Display screen, a Light Emitting Diode (LED) Display screen, and the like. The display screen 300 is disposed opposite to the rear cover 22 and is connected to a side of the middle frame 21 facing away from the rear cover 22. The display 300, the middle frame 21 and the rear cover 22 form a receiving space therebetween. The circuit board assembly 100, the camera module 400 and the battery 500 are all disposed in the accommodating space. The camera module 400 may include one or more cameras. The camera includes an optical lens and an image sensor. The optical lens may be one of a standard lens, a wide-angle lens, a telephoto lens, a macro lens, and the like. The image sensor may be one of a CCD image sensor, a CMOS image sensor, and the like. The camera module 400 is used to capture images. The battery 500 may be one of a lithium battery, a nickel-hydrogen battery, a nickel-chromium battery, and the like. The battery 500 is used for supplying power to the display screen 300, the camera module 400 and the circuit board assembly 100.

Referring to fig. 3 and fig. 4, fig. 3 is a schematic plan view of a partial structure of an electronic device 1000 according to an embodiment of the present disclosure. Fig. 4 is a schematic plan view of a circuit board assembly 100 according to an embodiment of the present disclosure. The circuit board assembly 100 includes at least one circuit board 2 and an antenna device 1. The antenna device 1 comprises a first functional antenna 10 and an NFC antenna 20. The first functional antenna 10 includes a first functional chip 101 and a first functional radiator 102. The NFC antenna 20 includes an NFC chip 201.

In one embodiment, the circuit board assembly 100 includes a circuit board 2. The circuit board 2 may be a main board of the electronic device 1000, or may be another sub-circuit board of the electronic device 1000. The circuit board 2 may be one of a single-sided board, a double-sided board, a multi-layered board, or the like. The substrate of the circuit board 2 may be a hard substrate or a flexible substrate. For example: the Circuit Board 2 may be a Printed Circuit Board (PCB) or a Flexible Printed Circuit (FPC). The circuit board 2 is disposed opposite to the rear cover 22. The first functional chip 101 and the NFC chip 201 are both disposed on the circuit board 2. Optionally, the first functional chip 101 and the NFC chip 201 are both disposed on a side of the circuit board 2 facing the back cover 22. Of course, in other embodiments, the first functional chip 101 and the NFC chip 201 may be both disposed on a side of the circuit board 2 away from the back cover 22, or the first functional chip 101 and the NFC chip 201 are respectively disposed on a side of the circuit board 2 facing the back cover 22 and a side of the circuit board 2 away from the back cover 22. The first functional chip 101 and the NFC chip 201 may be disposed at a distance or integrated. In this embodiment, the first functional chip 101 and the NFC chip 201 are disposed at an interval. The circuit board 2 comprises a reference ground. The reference ground may be an entire layer of ground conductor, a regional ground conductor, an external conductor electrically coupling the entire layer of ground conductor or the regional ground conductor, etc. on the circuit board 2. The material of the reference ground can be metal, for example: copper, gold, etc. The "ground reference" of the present application is indicated in the drawings by the ground symbol and is marked by GND.

Referring to fig. 2 to 4, a clearance area is formed between the first functional radiator 102 and a reference ground so as to improve the radiation performance of the first functional radiator 102. In other words, the first functional radiator 102 is spaced apart from the reference ground. In one embodiment, the first functional radiator 102 is disposed on the housing 200. For example: the first functional radiator 102 is disposed on the middle frame 21, or the first functional radiator 102 is disposed on the rear cover 22, or a part of the first functional radiator 102 is disposed on the middle frame 21, and another part of the first functional radiator is disposed on the rear cover 22. In the embodiment of the present application, the first functional radiator 102 is disposed on the rear cover 22 and near the top end of the rear cover 22. Of course, in other embodiments, the first functional radiator 102 may be disposed in other areas of the rear cover 22. When the back cover 22 is made of a conductive material such as metal, alloy, or carbon fiber, the first functional radiator 102 is disposed on the back cover 22, and it is understood that a partial region of the back cover 22 forms the first functional radiator 102. When the back cover 22 is made of a non-conductive material such as plastic, glass, or ceramic, the first functional radiator 102 is disposed on the back cover 22, and the first functional radiator 102 may be disposed on a side of the back cover 22 facing the circuit board 2, for example: the first functional radiator 102 is attached to the inner surface of the rear cover 22, or at least a portion of the first functional radiator 102 is embedded in the rear cover 22. It can be understood that the antenna device 1 provided in the present application may be applied to the electronic device 1000 in which the middle frame 21 and the rear cover 22 are made of conductive materials such as metal and alloy, or may be applied to the electronic device 1000 in which the middle frame 21 and the rear cover 22 are made of non-conductive materials such as plastic and glass.

As shown in fig. 5, fig. 5 is a schematic plan view of an antenna device 1 according to an embodiment of the present application. The antenna device 1 comprises a first functional antenna 10 and an NFC antenna 20.

The first functional antenna 10 may be one or more of a GPS antenna, a WIFI antenna, a bluetooth antenna, a 3G mobile communication antenna, a 4G mobile communication antenna, a 5G mobile communication antenna, and the like. The first functional antenna 10 includes a first functional chip 101 and a first functional radiator 102. For example, when the first functional antenna 10 is a GPS antenna, the first functional chip 101 corresponds to a GPS chip, and the first functional radiator 102 corresponds to a radiator of the GPS antenna. When the first functional antenna 10 is a WIFI antenna, the first functional chip 101 corresponds to a WIFI chip, and the first functional radiator 102 corresponds to a radiator of the WIFI antenna. When the first functional antenna 10 is a bluetooth antenna, the first functional chip 101 corresponds to a bluetooth chip, and the first functional radiator 102 corresponds to a radiator of the bluetooth antenna. When the first functional antenna 10 is a mobile communication antenna (3G, 4G, 5G, etc.), the first functional chip 101 corresponds to a mobile communication chip, and the first functional radiator 102 corresponds to a radiator of the mobile communication antenna. The "chip" of the present application is represented in the figures by alternating current symbols within circles.

The first functional radiator 102 includes a connected main radiation segment 120 and an extended radiation segment 121. The material of the main body radiation section 120 may be a conductive material such as metal, alloy, carbon fiber, and composite polymer. The material of the extended radiating section 121 may be a conductive material such as metal, alloy, carbon fiber, or composite polymer. The material of the main radiating section 120 may be the same as or different from that of the extended radiating section 121. In the embodiment of the present application, the material of the main radiating section 120 is the same as the material of the extended radiating section 121. The connection between the main radiating section 120 and the extended radiating section 121 may be direct connection or indirect connection. In the embodiment of the present application, the main radiating section 120 is integrally connected to the extension radiating section 121. It is understood that the main radiating section 120 and the extended radiating section 121 are also directly electrically connected.

The first functional chip 101 is electrically coupled to the body radiating section 120 for exciting the body radiating section 120 to transceive the first antenna signal. It will be appreciated that the first functional chip 101 is capable of exciting a corresponding radio frequency current on the body radiating section 120. In this application, "electrically coupled" may include one or more of a direct electrical connection, an indirect electrical connection, and a coupling connection, which will not be described in detail later. Optionally, the first functional chip 101 and the main body radiation section 120 may be electrically connected by one or more electrical connectors selected from a metal dome, a conductive trace, a conductive via, a metal probe, and the like. The first antenna signal may be one or more of a GPS signal, a WIFI signal, a bluetooth signal, a 3G mobile communication signal, a 4G mobile communication signal, a 5G mobile communication signal, and the like. For example, when the first functional antenna 10 is a GPS antenna, the first functional chip 101 can excite the main body radiation section 120 to transmit and receive GPS signals. When the first functional antenna 10 is a WIFI antenna, the first functional chip 101 may excite the main body radiation section 120 to transmit and receive WIFI signals. When the first functional antenna 10 is a bluetooth antenna, the first functional chip 101 may excite the main body radiation section 120 to transceive bluetooth signals. When the first functional antenna 10 is a mobile communication antenna, the first functional chip 101 may excite the main body radiation section 120 to transceive mobile communication signals (e.g., one or more of 3G signals, 4G signals, 5G signals, etc.). In the following embodiments, the first functional antenna 10 is a 4G mobile communication antenna, and the main body radiation segment 120 of the first functional radiator 102 can transmit and receive signals in a frequency band of 600MHz to 2690MHz under the excitation of the first functional chip 101. It can be understood that, in the present application, the 4G mobile communication signals transmitted and received by the first functional radiator 102 under the excitation of the first functional chip 101 include, but are not limited to, signals in a frequency band of 600MHz to 2690 MHz. In other words, the main body radiating section 120 can operate in the 4G mobile communication mode under the action of the first functional chip 101. In addition, it should be noted that, since the main radiating section 120 is directly electrically connected to the extended radiating section 121, the first functional chip 101 may also excite the extended radiating section 121 to receive and transmit the first antenna signal.

The width of the extended radiating section 121 is smaller than the width of the main body radiating section 120. It should be noted that: the extended radiating section 121 may be a radiating section with a regular shape, or may be a radiating section with an irregular shape; the body radiating section 120 may be a regular radiating section or an irregular radiating section. For example: the shape of the extended radiating section 121 may be a straight line or may be various shapes (e.g., L-shape, F-shape, V-shape, U-shape, etc.), etc. The shape of the main body radiating section 120 can be a straight line or various shapes (e.g., L-shape, F-shape, V, U-shape, etc.). When the extension radiating section 121 and the main radiating section 120 are both irregularly-shaped radiating sections, the fact that the width of the extension radiating section 121 is smaller than the width of the main radiating section 120 means that the maximum width of the extension radiating section 121 is smaller than the maximum width of the main radiating section 120. In an embodiment, as shown in fig. 6, fig. 6 is a schematic structural diagram of a first functional radiator 102 according to an embodiment of the present disclosure. The main radiation segment 120 may refer to a radiation segment included by a rectangle n in the drawing, and the extension radiation segment 121 may refer to a radiation segment included by a rectangle m in the drawing. In this embodiment, the length of the extended radiating section 121 is smaller than that of the radiating end of the main body, so as to avoid the first functional radiator 102 from being large in size.

The NFC antenna 20 is an antenna for realizing a near field communication function. The NFC antenna 20 includes an NFC chip 201. A first end of NFC chip 201 is electrically coupled to body radiating section 120 and a second end of NFC chip 201 is electrically coupled to extended radiating section 121. NFC chip 201, body radiating segment 120, and extension radiating segment 121 form a closed loop. In other words, the first end of the NFC chip 201, the main body radiating section 120, the extension radiating section 121, and the second end of the NFC chip 201 are electrically coupled in sequence. The first end of the NFC chip 201 and the main body radiation section 120 may be electrically connected by one or more electrical connectors selected from a metal dome, a conductive trace, a conductive via, a metal probe, and the like. One or more electrical connectors of a metal dome, a conductive trace, a conductive via, a metal probe, and the like may be electrically connected between the second end of the NFC chip 201 and the extended radiating section 121. The NFC chip 201 is used for exciting the main body radiating section 120 and the extended radiating section 121 to send and receive NFC signals. As can be appreciated, NFC chip 201 is capable of exciting corresponding radio frequency currents on body radiating segment 120 and extended radiating segment 121. In other words, the main body radiating segment 120 and the extended radiating segment 121 may operate in a near field communication mode under the action of the NFC chip 201.

Referring to fig. 7 and 8, the main radiating section 120 includes at least one feeding terminal and a grounding terminal. In the description of the embodiments below, the feeding end of the main body radiating section 120 is referred to as a first feeding end 120a, and the grounding end of the main body radiating section 120 is referred to as a first grounding end 120 b. The first functional chip 101 and the NFC chip 201 are both electrically coupled to the feeding end (i.e., the first feeding end 120a) of the main body radiating section 120. The ground terminal (i.e., the first ground terminal 120b) of the body radiating section 120 is used to electrically couple to a ground reference. In one embodiment, as shown in fig. 7, the number of the first feeding ends 120a is two. One first feeding end 120a electrically couples the first functional chip 101. The other first feeding end 120a electrically couples the NFC chip 201. In this embodiment, the first feeding end 120a electrically coupled to the NFC chip 201 may be located at or near an end of the main body radiating section 120 away from the extended radiating section 121, so that all or more main body radiating sections 120 receive and transmit NFC signals under the excitation of the NFC chip 201, thereby improving NFC performance. In another embodiment, as shown in fig. 8, the number of the first feeding ends 120a is one. The first feeding terminal 120a electrically couples the first functional chip 101 and the NFC chip 201. In this embodiment, the electrical coupling of the first feeding end 120a with the NFC chip 201 may multiplex a part of the electrical connections between the first feeding end 120a and the first functional chip 101, thereby reducing the number and/or size of the electrical connections in the antenna device 1. In the following embodiments, the main radiating section 120 includes a feeding end.

The antenna device 1 provided by the application includes a first functional antenna 10 and an NFC antenna 20, because the first functional antenna 10 includes a first functional chip 101 and a first functional radiator 102, and an NFC chip 201 of the NFC antenna 20 is electrically connected to a main body radiation section 120 of the first functional radiator 102, so that the NFC antenna 20 and the first functional antenna 10 can share the main body radiation section 120, which is beneficial to reducing the size of the antenna device 1, and the NFC chip 201 is further electrically connected to an extension radiation section 121 of the first functional radiator 102, so that the effective electrical length of the NFC antenna 20 is extended, and the inductance is enhanced under the excitation of the NFC chip 201, thereby facilitating the improvement of the NFC performance of the antenna device 1; in addition, since the width of the extended radiation section 121 is smaller than the width of the main radiation section 120, the size of the antenna device 1 can be further reduced, the layout difficulty of the antenna device in the electronic device 1000 can be reduced, and other devices (such as an earphone, the camera module 400, a speaker, the battery 500, and the like) in the electronic device 1000 can be disposed or avoided in the width direction of the extended radiation section 121. The circuit board assembly 100 and the electronic device 1000 provided by the application comprise the antenna device 1, so that the NFC performance is good and the layout difficulty is small.

Optionally, referring to fig. 9 and 10, the NFC antenna 20 further includes an NFC coil 202. The shape of the NFC coil 202 includes, but is not limited to, an L shape, a V shape, a U shape, a rectangle, a square, a circle, various shapes, and the like. The shape of the NFC coil 202 in the figures of the present application is only an example. The NFC coil 202 is electrically coupled between a first end of the NFC chip 201 and the body radiating section 120, or the NFC coil 202 is electrically coupled between a second end of the NFC chip 201 and the extended radiating section 121. In one embodiment, as shown in fig. 9, the NFC coil 202 is electrically coupled between the first end of the NFC chip 201 and the body radiating section 120. In other words, the first end of the NFC chip 201, the NFC coil 202, the body radiating section 120, the extension radiating section 121, and the second end of the NFC chip 201 are electrically coupled in sequence to form a closed loop. In another embodiment, as shown in fig. 10, the NFC coil 202 is electrically coupled between the second end of the NFC chip 201 and the extended radiating section 121. In other words, the first end of the NFC chip 201, the body radiating section 120, the extension radiating section 121, the NFC coil 202, and the second end of the NFC chip 201 are electrically coupled in sequence to form a closed loop. The NFC chip 201 is also used to excite the NFC coil 202 to transmit and receive NFC signals. As can be appreciated, NFC chip 201 is capable of exciting a corresponding radio frequency current on NFC coil 202, body radiating segment 120, and extended radiating segment 121. In other words, the NFC coil 202, the main body radiating section 120, and the extension radiating section 121 can all operate in the near field communication mode under the action of the NFC chip 201. In this embodiment, by increasing the NFC coil 202, the contact area during near field communication can be increased, and the inductance strength of the NFC antenna 20 is improved, thereby further improving the NFC performance of the antenna device 1. In addition, the NFC coil 202 is electrically coupled between the first end of the NFC chip 201 and the body radiating section 120, or the NFC coil 202 is electrically coupled between the second end of the NFC chip 201 and the extended radiating section 121, so that the NFC coil 202, the body radiating section 120 and the extended radiating section 121 share the same NFC chip 201, thereby reducing the number of NFC chips 201 and reducing the volume of the antenna device 1.

The NFC coil 202 includes a first electrical connection 220 and a second electrical connection 221. The first electrical connection terminal 220 may be a metal sheet, a metal probe, an electrical connection plate, or the like. The second electrical connection terminal 221 may be a metal plate, a metal probe, an electrical connection plate, or the like. The first electrical connection end 220 and the second electrical connection end 221 are disposed between the NFC chip 201 and the first functional radiator 102. In one embodiment, the NFC chip 201 and the first functional radiator 102 are disposed opposite to each other along the length direction of the antenna device 1; along the length direction of the antenna device 1, the first electrical connection terminal 220 and the second electrical connection terminal 221 are both arranged between the NFC chip 201 and the first functional radiator 102. The length direction of the antenna device 1 can refer to the X-axis direction in the drawing. Of course, in other embodiments, the NFC chip 201 and the first functional radiator 102 may also be disposed opposite to each other along the width direction of the antenna device 1; in the width direction of the antenna device 1, the first electrical connection terminal 220 and the second electrical connection terminal 221 may be both arranged between the NFC chip 201 and the first functional radiator 102. Here, the width direction of the antenna device 1 may refer to the Y-axis direction in the drawing. In the embodiment of the present application, the longitudinal direction of the antenna device 1 is the longitudinal direction of the electronic apparatus 1000 (see fig. 3), and the width direction of the antenna device 1 is the width direction of the electronic apparatus 1000. The distance from the first electrical connection terminal 220 to the NFC chip 201 is less than or equal to the distance from the second electrical connection terminal 221 to the NFC chip 201. The first electrical connection end 220 is electrically coupled to a first end of the NFC chip 201, and the second electrical connection end 221 is electrically coupled to the body radiating section 120; alternatively, the first electrical connection terminal 220 is electrically coupled to the second terminal of the NFC chip 201, and the second electrical connection terminal 221 is electrically coupled to the extended radiating section 121. Specifically, when the NFC coil 202 is electrically coupled between the first end of the NFC chip 201 and the body radiating section 120, the first electrical connection end 220 is electrically coupled to the first end of the NFC chip 201, and the second electrical connection end 221 is electrically coupled to the feeding end of the body radiating section 120. When the NFC coil 202 is electrically coupled between the second end of the NFC chip 201 and the extended radiating section 121, the first electrical connection end 220 is electrically coupled to the second end of the NFC chip 201, and the second electrical connection end 221 is electrically coupled to an end of the extended radiating section 121 away from the main body radiating section 120. By electrically coupling the second electrical connection terminal 221 to the end of the extended radiating section 121 far away from the main body radiating section 120, all or more of the extended radiating sections 121 can receive and transmit NFC signals under the excitation of the NFC chip 201, thereby improving NFC performance. By arranging the first electrical connection end 220 and the second electrical connection end 221 of the NFC coil 202 between the NFC chip 201 and the first functional radiator 102, the sum of the distance between the first electrical connection end 220 and the NFC chip 201 and the distance between the second electrical connection end 221 and the first functional radiator 102 can be shortened, so as to reduce the length of the electrical connection members between the NFC coil 202 and the NFC chip 201 and the first functional radiator 102 (in this embodiment, the sum of the length of the first connection trace 401 and the length of the second connection trace 402 in fig. 9 can be referred to), thereby facilitating the miniaturization of the antenna apparatus 1 and the layout thereof inside the electronic device 1000, and at the same time, reducing the loss of the NFC antenna 20 and improving the NFC performance.

Referring to fig. 11 to 13, the NFC coil 202 further includes a body coil portion 223. The body coil portion 223 is connected between the first electrical connection terminal 220 and the second electrical connection terminal 221. The body coil portion 223 includes at least one first coil portion 223a and at least one second coil portion 223 b. The first coil portion 223a is disposed opposite to the second coil portion 223b, the first coil portion 223a includes at least one first trace 2230, the second coil portion 223b includes at least one second trace 2231, and a width of the first trace 2230 is different from a width of the second trace 2231 and/or a number of the first traces 2230 is different from a number of the second traces 2231. The number of the first coil portions 223a and the number of the second coil portions 223b are not specifically limited, and the number of the first traces 2230 and the number of the second traces 2231 are not specifically limited.

In one embodiment, as shown in fig. 11, the width of the first trace 2230 is different from the width of the second trace 2231. Specifically, the body coil portion 223 includes two first coil portions 223a and two second coil portions 223 b. The two first coil portions 223a are respectively denoted by 223a in the drawing₁And 223a₂. The two second coil portions 223b are respectively denoted by 223b in the drawing₁And 223b₂. Wherein the first coil part 223a₂And the second coil part 223b₂Are oppositely disposed along the length direction of the antenna device 1. First coil part 223a₁And the second coil part 223b₁Are oppositely disposed in the width direction of the antenna device 1. The first coil portion 223a includes a plurality of first traces 2230, and three first traces 2230 are taken as an example in this embodiment. The second coil portion 223b includes a plurality of second traces 2231, and in the embodiment of the present application, three second traces 2231 are taken as an example. The width of the first trace 2230 is smaller than the width of the second trace 2231. Of course, in other embodiments, the width of the first trace 2230 may be greater than the width of the second trace 2231.

In another embodiment, as shown in fig. 12, the number of the first tracks 2230 is different from the number of the second tracks 2231. Specifically, the body coil portion 223 includes a first coil portion 223a and a second coil portion 223 b. The first coil portion 223a and the second coil portion 223b are disposed opposite to each other in the width direction of the antenna device 1. The first coil portion 223a includes one or more first traces 2230, for example, one first trace 2230 in this embodiment. The second coil portion 223b includes a plurality of second traces 2231, and three second traces 2231 are taken as an example in this embodiment of the application. The number of the first traces 2230 is less than the number of the second traces 2231. Of course, in other embodiments, the number of first traces 2230 may be greater than the number of second traces 2231.

In another embodiment, as shown in fig. 13, the width of the first trace 2230 is different from the width of the second trace 2231, and the number of the first traces 2230 is different from the number of the second traces 2231. As shown in fig. 3, the body coil portion 223 includes a first coil portion 223a and a second coil portion 223 b. The first coil portion 223a and the second coil portion 223b are disposed opposite to each other in the width direction of the antenna device 1. The first coil portion 223a includes one or more first traces 2230, and two first traces 2230 are taken as an example in this embodiment. The second coil portion 223b includes a plurality of second traces 2231, and three second traces 2231 are taken as an example in this embodiment of the application. The number of the first traces 2230 is less than that of the second traces 2231, and the width of the first traces 2230 is less than that of the second traces 2231. Of course, in other embodiments, the number of first traces 2230 can be greater than the number of second traces 2231, and the width of first traces 2230 is greater than the width of second traces 2231.

Since the body coil portion 223 of the NFC coil 202 includes the first coil portion 223a and the second coil portion 223b which are oppositely disposed, the current flowing in the first coil portion 223a is opposite to the current flowing in the second coil portion 223b, which may cause the magnetic field generated by the first coil portion 223a and the magnetic field generated by the second coil portion 223b to be cancelled, and in the embodiment of the present application, by making the width of the first trace 2230 in the first coil portion 223a different from the width of the first trace 2230 in the second coil portion 223b, the strength of the magnetic field generated by one of the first coil portion 223a and the second coil portion 223b may be reduced, thereby reducing the cancellation of the magnetic field generated by the other, so that the NFC coil 202 has a better NFC performance, and the near field communication strength and/or distance of the antenna apparatus 1 is increased. By making the number of the first traces 2230 in the first coil portion 223a different from the number of the first traces 2230 in the second coil portion 223b, the strength of the magnetic field generated by one of the first coil portion 223a and the second coil portion 223b can be reduced as well, so that the cancellation of the magnetic field generated by the other one is reduced, the NFC coil 202 has better NFC performance, and the near field communication strength and/or distance of the antenna apparatus 1 is increased.

In one embodiment, as shown in fig. 14, an orthographic projection of the NFC chip 201 in the plane of the NFC coil 202 is located in the body coil portion 223. By positioning the orthographic projection of the NFC chip 201 in the plane of the NFC coil 202 in the body coil portion 223, the layout of the antenna device 1 can be further optimized, so that the size of the antenna device 1 is reduced, and the structural compactness of the antenna device 1 is improved. Due to the compact structural design of the antenna device 1, the length of the electrical connection between the NFC chip 201, the NFC coil 202 and the first functional radiator 102 (in this application, reference may be made to the sum of the length of the first connection trace 401, the length of the second connection trace 402 and the length of the third connection trace 403) may be further reduced.

Further, as shown in fig. 15, the first functional antenna 10 further includes at least one capacitor 103. The capacitance 103 of the first functional antenna 10 of the present application is labelled C1 in the drawings. One end of the capacitor 103 is electrically coupled to the first ground 120b, the other end of the capacitor 103 is used for electrically coupling to ground, and the capacitor 103 is used for a current excited by the first functional chip 101 and for blocking a current excited by the NFC chip 201. In this embodiment, the characteristic of passing high frequency and low frequency through the capacitor 103 causes the current excited by the first functional chip 101 to flow back to the reference ground through the first ground terminal 120b and the capacitor 103 to form a loop, thereby implementing the function of the first functional radiator 102 for receiving and transmitting the first antenna signal; the current excited by the NFC chip 201 cannot return to the ground through the first ground terminal 120b and the capacitor 103, so that the NFC chip 201, the main body radiation section 120, and the extension radiation section 121 form a loop, and the function of the first functional radiator 102 for receiving and transmitting an NFC signal is realized, where the loops of the two currents are different, thereby reducing interference of the current excited by the NFC chip 201 on the main body radiation section 120 for receiving and transmitting a first antenna signal, and isolating the influence of the NFC antenna 20 on the first functional antenna 10.

Further, as shown in fig. 16, the antenna device 1 further includes a first matching circuit 104 and a second matching circuit 105. First matching circuit 104 is electrically coupled between body radiating section 120 and a first end of NFC chip 201. In this embodiment, first matching circuit 104 is electrically coupled between first feed end 120a of body radiating section 120 and a first end of NFC chip 201. The second matching circuit 105 is electrically coupled between the extended radiating section 121 and the second end of the NFC chip 201. The first matching circuit 104 and the second matching circuit 105 are used for blocking a current excited by the first functional chip 101 and a current excited by the NFC chip 201. The current excited by the NFC chip 201 can be transmitted to the main body radiation section 120 through the first end of the NFC chip 201 by the conducting and blocking characteristics of the first matching circuit 104 for the currents of different frequency bands, while the current excited by the first functional chip 101 cannot be transmitted to the first end of the NFC chip 201, and the current excited by the NFC chip 201 can be transmitted to the second end of the NFC chip 201 through the extending radiation section 121 by the conducting and blocking characteristics of the second matching circuit 105 for the currents of different frequency bands, while the current excited by the first functional chip 101 cannot be transmitted to the second end of the NFC chip 201, so that the interference of the current excited by the first functional chip 101 on the NFC antenna 20 to receive and transmit NFC signals is reduced, and the influence of the first functional antenna 10 on the NFC antenna 20 is isolated.

Referring to fig. 17 and fig. 18, fig. 17 is a schematic plan view of another antenna device 1 according to an embodiment of the present application. The antenna device 1 comprises a first functional antenna 10, an NFC antenna 20 and a second functional antenna 30. The first functional antenna 10 and the NFC antenna 20 are the same as those in the above embodiments, and are not described herein again. The second functional antenna 30 may be one or more of a GPS antenna, a WIFI antenna, a bluetooth antenna, a 3G mobile communication antenna, a 4G mobile communication antenna, a 5G mobile communication antenna, and the like. The second functional antenna 30 includes a second functional chip 301 and a second functional radiator 302. For example, when the second functional antenna 30 is a GPS antenna, the second functional chip 301 corresponds to a GPS chip, and the second functional radiator 302 corresponds to a radiator of the GPS antenna. When the second functional antenna 30 is a WIFI antenna, the second functional chip 301 corresponds to a WIFI chip, and the second functional radiator 302 corresponds to a radiator of the WIFI antenna. When the second functional antenna 30 is a bluetooth antenna, the second functional chip 301 corresponds to a bluetooth chip, and the second functional radiator 302 corresponds to a radiator of the bluetooth antenna. When the second functional antenna 30 is a mobile communication antenna (3G, 4G, 5G, etc.), the second functional chip 301 corresponds to a mobile communication chip, and the second functional radiator 302 corresponds to a radiator of the mobile communication antenna. The material of the second functional radiator 302 may be a conductive material such as metal, alloy, carbon fiber, or composite polymer. The shape of the second functional radiator 302 may be one of a straight line shape, an L shape, an F shape, a V shape, a long bar shape, other shapes, and the like. The second functional radiator 302 is located on a side of the extended radiating section 121 facing away from the main radiating section 120. In other words, the second functional radiator 302, the extension radiation section 121, and the main radiation section 120 are sequentially arranged. The second functional radiator 302 is spaced apart from the extended radiation segment 121. Optionally, a gap may be formed between the second functional radiator 302 and the extended radiation segment 121, or the second functional radiator 302 and the extended radiation segment 121 are separated by an insulating material, or the second functional radiator 302 and the extended radiation segment 121 are separated by another antenna. It should be noted that fig. 18 of the present application illustrates a positional relationship between the second functional radiator 302 and the first functional radiator 102, and it is understood that the positional relationship between the second functional radiator 302 and the first functional radiator 102 of the present application includes, but is not limited to, the positional relationship illustrated in fig. 18, for example: the second functional radiator 302 may also be disposed near the bottom of the rear cover 22, and the left and right side portions of the rear cover 22. The second functional chip 301 is electrically connected to the second functional radiator 302, and is configured to excite the second functional radiator 302 to receive and transmit a second antenna signal, where the second antenna signal is different from the first antenna signal. It will be appreciated that the second functional chip 301 is capable of exciting a corresponding radio frequency current on the second functional radiator 302. The second functional chip 301 and the second functional radiator 302 may be electrically connected by one or more electrical connectors selected from a metal dome, a conductive trace, a conductive via, a metal probe, and the like. The second antenna signal may be one or more of a GPS signal, a WIFI signal, a bluetooth signal, a 3G mobile communication signal, a 4G mobile communication signal, a 5G mobile communication signal, and the like. For example, when the second functional antenna 30 is a GPS antenna, the second functional chip 301 may excite the second functional radiator 302 to transmit and receive GPS signals. When the second functional antenna 30 is a WIFI antenna, the second functional chip 301 may excite the second functional radiator 302 to receive and transmit a WIFI signal. When the second functional antenna 30 is a bluetooth antenna, the second functional chip 301 may excite the second functional radiator 302 to transmit and receive bluetooth signals. When the second functional antenna 30 is a mobile communication antenna, the second functional chip 301 may excite the second functional radiator 302 to transceive mobile communication signals (e.g., one or more of 3G signals, 4G signals, 5G signals, etc.). The second antenna signal may be different from the first antenna signal in the type of the second antenna signal (GPS, WIFI, bluetooth, mobile communication, etc.) and the type of the first antenna signal, or may be different in the frequency band of the second antenna signal and the frequency band of the first antenna signal. In an embodiment, the second functional antenna 30 may be a GPS antenna and a WIFI antenna, and the second functional radiator 302 can receive and transmit signals of a GPS L1 frequency band and a WIFI 5G frequency band under excitation of the second functional chip 301. It can be understood that, in the present application, the signals transmitted and received by the second functional radiator 302 under the excitation of the second functional chip 301 include, but are not limited to, signals of GPS L1 and WIFI 5G frequency band. By providing the second functional antenna 30, the antenna apparatus 1 can have more communication types, and the use scenario of the antenna apparatus 1 can be improved. The second functional radiator 302 is located on the side of the extended radiation segment 121 far from the main radiation segment 120, and the extended radiation segment 121 is not the main radiation segment of the first functional antenna 10 because of its small width, so that the isolation between the first functional antenna 10 and the second functional antenna 30 can be improved.

Further, referring to fig. 19 to 22, the antenna device 1 further includes a SAR sensor 50. The SAR sensor 50 is a sensor for detecting a Specific Absorption Rate (SAR). The specific absorption rate is the electromagnetic radiation energy absorbed by a substance per unit mass per unit time. The radiation power of the first functional antenna 10 and the second functional antenna 30 can be dynamically adjusted by detecting the specific absorption rate, so that the electromagnetic radiation injury to a user is reduced while good communication is ensured. The SAR sensor 50 comprises a SAR sensor chip 501, the SAR sensor chip 501 being electrically coupled to the second functional radiator 302. One or more electric connectors of a metal elastic sheet, a conductive trace, a conductive via, a metal probe and the like may be used for the electrical connection between the SAR sensor chip 501 and the second functional radiator 302. In one embodiment, the second functional radiator 302 includes at least one feed terminal and a ground terminal. In the following description of the embodiments, the feeding end of the second functional radiator 302 is referred to as a second feeding end 320, and the ground end of the second functional radiator 302 is referred to as a second ground end 321. The second feeding end 320 electrically couples the second functional chip 301 and the SAR sensor chip 501. The second ground terminal 321 is used to electrically couple to a ground reference. In one embodiment, as shown in fig. 19, the number of the second feeding terminals 320 is two, and one second feeding terminal 320 is electrically connected to the second functional chip 301. The other second feeding end 320 is electrically coupled to the SAR sensor chip 501. In this embodiment, the second feeding end 320 electrically connected to the SAR sensor chip 501 and the second feeding end 320 electrically connected to the second functional chip 301 do not interfere with each other, so that the influence between the SAR sensor 50 and the second functional antenna 30 can be reduced. In another embodiment, as shown in fig. 20, the number of the second feeding terminals 320 is one. The second feeding end 320 electrically couples the second functional chip 301 and the SAR sensor chip 501. In this embodiment, the electrical coupling of the second feeding end 320 and the SAR sensor chip 501 may multiplex a portion of the electrical connections between the second feeding end 320 and the second functional chip 301, thereby reducing the number and/or size of the electrical connections in the antenna device 1. The SAR sensor chip 501 is configured to receive a change of an electrical signal on the second functional radiator 302 and determine a SAR value according to the change of the electrical signal. The change in the electrical signal on the second functional radiator 302 may be a change in capacitance 103, a change in current frequency, a change in impedance, a change in power, etc. Because the SAR sensor chip 501 is electrically connected to the second functional radiator 302, and the SAR value is determined by detecting a change in an electrical signal on the second functional radiator 302, the SAR sensor chip 501 and the second functional chip 301 can share the second functional radiator 302, even though the second functional radiator 302 can be used as both a radiator of the second functional antenna 30 to receive and transmit a corresponding second antenna signal and as a sensing element of the SAR sensor 50 to sense a change in an external environment. In an application scenario, one end of the SAR sensor 50 is electrically connected to the second functional radiator 302, the other end of the SAR sensor 50 is electrically connected to a controller 600 (for example, may be a CPU) of the electronic device 1000, when an external environment changes, an electrical signal on the second functional radiator 302 changes, the SAR sensor chip 501 determines a SAR value according to the change of the electrical signal on the second functional radiator 302 and transmits the SAR value to the controller 600, and the controller 600 controls the radiation power of the first functional antenna 10 and the radiation power of the second functional antenna 30 according to the SAR value.

The second functional antenna 30 further comprises a capacitor 303. The capacitor 303 of the second functional antenna 30 of the present application is labeled C2 in the drawing. The capacitor 303 is electrically coupled between the second ground 321 and ground reference. The capacitor 303 is used for current excited by the second functional chip 301 and for blocking current excited by the SAR sensor chip 501. In this embodiment, the capacitor 303 is used to pass the high-frequency and low-frequency blocking characteristic, so that the current excited by the second functional chip 301 flows back to the reference ground through the second ground terminal 321 and the capacitor 303 to form a loop, thereby implementing the function of the second functional radiator 302 for receiving and transmitting the second antenna signal; the current excited by the SAR sensor chip 501 cannot return to the ground through the second grounding terminal 321 and the capacitor 303, so that the second functional radiator 302 and the SAR sensor chip 501 form a loop, and the function of the second functional radiator 302 as a sensitive element of the SAR sensor 50 is realized, and because the loops of the two currents are different, the interference of the current excited by the SAR sensor 50 on the second functional radiator 302 for receiving and transmitting the second antenna signal can be reduced, and the influence of the SAR sensor 50 on the second functional antenna 30 is isolated.

The antenna device 1 provided in this embodiment includes the first functional antenna 10, the NFC antenna 20, and the second functional antenna 30, and since the first functional antenna 10 and the NFC antenna 20 share the first functional radiator 102, and the second functional antenna 30 and the SAR sensor 50 share the second functional radiator 302, the size of the antenna device 1 can be effectively reduced and the layout difficulty of the antenna device 1 in the electronic device 1000 can be reduced under the condition that the antenna device 1 has the NFC function and the SAR value detection function.

The features mentioned above in the description, the claims and the drawings can be combined with one another in any desired manner, insofar as they are of significance within the scope of the application. The advantages and features described for the antenna device 1 apply in a corresponding manner to the circuit board assembly 100 and to the electronic device 1000. Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present application, and that such changes and modifications are also to be considered as within the scope of the present application.

Claims

1. An antenna device, comprising:

the NFC antenna comprises an NFC chip, wherein a first end of the NFC chip is electrically connected with the main body radiation section, a second end of the NFC chip is electrically connected with the extension radiation section, the NFC chip is used for exciting the main body radiation section and the extension radiation section to form a closed loop, and NFC signals are transmitted and received by the main body radiation section and the extension radiation section.

2. The antenna device of claim 1, wherein the NFC antenna further comprises an NFC coil electrically coupled between the first end of the NFC chip and the body radiating section or between the second end of the NFC chip and the extended radiating section, the NFC chip further configured to excite the NFC coil to transceive the NFC signal.

3. The antenna device of claim 2, wherein the NFC coil includes a first electrical connection and a second electrical connection, the first electrical connection and the second electrical connection both being disposed between the NFC chip and the first functional radiator, the first electrical connection being located a distance from the NFC chip that is less than or equal to a distance from the second electrical connection to the NFC chip, the first electrical connection electrically coupling a first end of the NFC chip, the second electrical connection electrically coupling the body radiating section; or, the first electrical connection end is electrically connected with the second end of the NFC chip, and the second electrical connection end is electrically connected with the extension radiation section.

4. The antenna device according to claim 3, wherein the NFC coil further comprises a body coil portion connected between the first electrical connection end and the second electrical connection end, the body coil portion comprises at least one first coil portion and at least one second coil portion, the first coil portion and the second coil portion are arranged opposite to each other, the first coil portion comprises at least one first trace, the second coil portion comprises at least one second trace, and a width of the first trace is different from a width of the second trace and/or a number of the first trace is different from a number of the second trace.

5. The antenna device according to claim 4, wherein an orthographic projection of the NFC chip within the plane of the NFC coil is located within the body coil portion.

6. The antenna device according to any of claims 1 to 5, wherein the first antenna signal comprises at least one of a GPS signal, a WIFI signal, a 2G mobile communication signal, a 3G mobile communication signal, a 4G mobile communication signal, a 5G mobile communication signal.

7. The antenna device as claimed in claim 6, wherein the body radiating section comprises at least one feeding terminal and a grounding terminal, the feeding terminal electrically connects the first functional chip and the NFC chip, the first functional antenna further comprises at least one capacitor, one end of the capacitor is electrically connected with the grounding terminal, the other end of the capacitor is electrically connected with a reference ground, and the capacitor is used for current excited by the first functional chip and blocking current excited by the NFC chip.

8. The antenna device as claimed in any one of claims 1 to 5, further comprising a first matching circuit electrically coupled between the body radiating section and the first end of the NFC chip, and a second matching circuit electrically coupled between the extended radiating section and the second end of the NFC chip, wherein the first matching circuit and the second matching circuit are both for passing current excited by the NFC chip and for blocking current excited by the first functional chip.

9. The antenna device according to any one of claims 1 to 5, wherein the antenna device further comprises a second functional antenna, the second functional antenna comprises a second functional chip and a second functional radiator, the second functional radiator is located on a side of the extended radiating section away from the main radiating section and is spaced apart from the extended radiating section, the second functional chip is electrically connected to the second functional radiator for exciting the second functional radiator to receive and transmit a second antenna signal, and the second antenna signal is different from the first antenna signal.

10. The antenna device according to claim 9, characterized in that it further comprises a SAR sensor comprising a SAR sensor chip electrically coupled to the second functional radiator, the SAR sensor chip being configured to receive a variation of an electrical signal on the second functional radiator and to determine a SAR value from the variation of the electrical signal.

11. A circuit board assembly comprising at least one circuit board and an antenna device according to any of claims 1 to 10, wherein the first functional chip and the NFC chip are all located on the circuit board, wherein the circuit board comprises a reference ground, and wherein a clearance area is formed between the first functional radiator and the reference ground.

12. An electronic device comprising a housing and the circuit board assembly of claim 11, wherein the first functional radiator is disposed on the housing.