CN106887685B - Antenna device and communication electronic equipment - Google Patents

Antenna device and communication electronic equipment Download PDF

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Publication number
CN106887685B
CN106887685B CN201710141327.4A CN201710141327A CN106887685B CN 106887685 B CN106887685 B CN 106887685B CN 201710141327 A CN201710141327 A CN 201710141327A CN 106887685 B CN106887685 B CN 106887685B
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antenna device
conductor layer
antenna
main board
circuit
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CN106887685A (en
Inventor
沈建靓
崔斌
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Lenovo Beijing Ltd
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Lenovo Beijing Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/24—Polarising devices; Polarisation filters 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/385—Transceivers carried on the body, e.g. in helmets

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Support Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The invention discloses an antenna device and communication electronic equipment, the antenna device is used for the communication electronic equipment, the electronic equipment has a circuit main board, the antenna device includes: the first conductor layer and the second conductor layer are oppositely arranged; an insulating dielectric layer between the first conductor layer and the second conductor layer; the first conductor layer is used for being arranged opposite to the circuit main board and fixed on the main board circuit; the second conductor layer has at least a first slit and a second slit perpendicular to each other. The technical scheme of the invention improves the working bandwidth of the antenna device.

Description

Antenna device and communication electronic equipment
Technical Field
The present invention relates to the field of electronic devices, and in particular, to an antenna device and a communication electronic device.
Background
With the continuous development of science and technology, more and more communication electronic devices are widely applied to daily life and work of people, bring great convenience to the daily life and work of people, and become an indispensable important tool for people at present.
In recent years, with the development of wireless communication technology, the functions of communication electronic devices are becoming more powerful. For example, a smart phone is the most popular electronic communication device, and the current smart phone not only has the traditional wireless communication function, but also has the functions of internet access, data transmission, identity recognition, wireless payment and the like.
As more functions are required in communication electronic equipment, a plurality of different types of antenna devices are required in conventional communication electronic equipment in order to meet the demand for diversification of functions. The existing antenna devices have a narrow operating bandwidth.
Disclosure of Invention
In order to solve the above problems, the present invention provides an antenna device and a communication electronic apparatus, which improve the operating bandwidth of the antenna device.
In order to achieve the above purpose, the invention provides the following technical scheme:
an antenna device for a communication electronic apparatus having a circuit board, the antenna device comprising:
the first conductor layer and the second conductor layer are oppositely arranged;
an insulating dielectric layer between the first conductor layer and the second conductor layer;
the first conductor layer is used for being arranged opposite to the circuit main board and fixed on the main board circuit; the second conductor layer has at least a first slit and a second slit perpendicular to each other.
Preferably, in the antenna device, the second conductor layer has a rectangular shape in a first direction, and the first direction is perpendicular to the first conductor layer and the second conductor layer;
the first slit is parallel to the long edge of the rectangle, and two ends of the first slit are both positioned in the rectangle;
the second opens seam and is on a parallel with rectangular minor face, just the second opens seam one end and is located a long limit of rectangle, the other end is located in the rectangle.
Preferably, in the antenna device, the dielectric constant of the insulating dielectric layer is greater than 10.
In the above antenna device, the first conductor layer and the second conductor layer are preferably both copper layers.
Preferably, in the antenna device, a diversity antenna and a main antenna are respectively provided at both ends of the circuit board;
the antenna device is arranged in the middle of the diversity antenna and the main antenna.
Preferably, in the above antenna device, the communication electronic apparatus includes a battery module fixed to the circuit board;
the antenna device is fixed on one side of the battery module, which is far away from the circuit main board.
Preferably, in the above antenna device, a radiation direction of the antenna device is directed from the first conductor layer to the second conductor layer.
The present invention also provides a communication electronic device, including:
a circuit main board;
the antenna device is arranged opposite to the circuit main board;
wherein the antenna device includes: the first conductor layer and the second conductor layer are oppositely arranged; an insulating dielectric layer between the first conductor layer and the second conductor layer; the first conductor layer is used for being arranged opposite to the circuit main board and fixed on the main board circuit; the second conductor layer has a first slit and a second slit perpendicular to each other.
Preferably, in the communication electronic device, a diversity antenna and a main antenna are respectively disposed at two ends of the main board of the communication circuit;
the antenna device is arranged in the middle of the diversity antenna and the main antenna.
Preferably, in the above communication electronic device, a battery module is provided between the antenna device and the circuit board.
As can be seen from the above description, in the antenna device and the communication electronic apparatus provided in the technical solution of the present invention, the first conductor layer of the radio frequency electric wire is provided with the first slot and the second slot that are perpendicular to each other, and by adjusting the positions and the sizes of the first slot and the second slot, the resonant frequency formed by the first slot and the resonant frequency formed by the second slot can be overlapped with each other within the required operating frequency, thereby increasing the bandwidth of the antenna device.
Meanwhile, the overlapping area of the two slotted resonance frequencies is dual-polarized, and a dual-polarized antenna device is formed, so that one part of the frequency band of the antenna device is vertically polarized, and the other part of the frequency band of the antenna device is horizontally polarized. Therefore, when the antenna device is used as a radio frequency identification antenna to communicate with the label, no matter where the label is located, the polarization can correspond to the label, and the identification of the label is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a front plan view of an antenna device according to an embodiment of the present invention;
fig. 2 is a rear plan view of an antenna device according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of an antenna device according to an embodiment of the present invention;
fig. 4 is a schematic layout diagram of an antenna apparatus according to an embodiment of the present invention;
FIG. 5 is a graph of resonant frequency and bandwidth provided by an embodiment of the present invention;
FIG. 6 is another graph of resonant frequency and bandwidth provided by an embodiment of the present invention;
FIG. 7 is a graph of resonance frequency and bandwidth provided by an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic communication device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 3, fig. 1 is a front plan view of an antenna device according to an embodiment of the present invention, fig. 2 is a back plan view of the antenna device according to the embodiment of the present invention, and fig. 3 is a cross-sectional view of the antenna device according to the embodiment of the present invention. Wherein, FIG. 3 is a cross-sectional view along AA' of FIG. 1. In the embodiment of the invention, the antenna device is used for communication electronic equipment, and the communication electronic equipment is provided with a circuit main board.
The antenna device includes: a first conductor layer 11 and a second conductor layer 12 which are provided to face each other; an insulating dielectric layer 13 located between the first conductor layer 11 and the second conductor layer 12; the first conductor layer 11 is used for being arranged opposite to the circuit main board and fixed on the main board circuit; the second conductor layer 12 has at least a first slit K1 and a second slit K2 perpendicular to each other. The first conductor layer 11 and the second conductor layer 12 are electrically connected by a feeding terminal 14.
Alternatively, the first conductor layer 11 and the second conductor layer 12 may be copper layers. In order to meet the requirement of the operating band of the antenna device, the dielectric constant of the insulating medium layer 13 needs to be relatively large, and generally, the insulating medium layer 13 may be made of an insulating material with a dielectric constant greater than 10.
The first conductor layer 11 is used for being fixed on a circuit board of the communication electronic device. As shown in fig. 1-3, the first direction Z, the second direction X, and the third direction Y are set to be perpendicular to each other two by two to form a three-dimensional rectangular coordinate system. The first slit K1 extends in the second direction X, and the second slit K2 extends in the third direction Y. The second direction X and the third direction Y are both parallel to the first conductive layer 11 and the second conductive layer 12. The first direction Z may be arranged to be directed from the first conductor layer 11 towards the second conductor layer 12.
The provision of the first slit K1 and the second slit K2 perpendicular to each other can realize dual polarization of the antenna device.
In the antenna device provided in the embodiment of the present invention, the radiation direction of the antenna device is directed from the first conductor layer to the second conductor layer. The interference of the electromagnetic wave of the antenna device to other antenna devices on the main board circuit can be greatly reduced.
In the antenna device provided by the embodiment of the present invention, by adjusting the positions of the first slot K1 and the second slot K2 in the second conductor layer 12 and adjusting the sizes of the first slot K1 and the second slot K2, when the antenna device provided by the embodiment of the present invention is used as a radio frequency identification antenna, the operating band can be 902MHz-928MHz, and the antenna device has a larger operating bandwidth.
When the antenna device is used as a radio frequency identification antenna in the embodiment of the invention, the working waveband of the antenna device needs to exceed 900MHz, and the antenna device needs to have a larger area. For the existing communication electronic equipment, the size is generally small, in order to enable the operating band of the antenna device to meet the requirement, the antenna device needs to have a sufficiently large area in the communication electronic equipment with the small size, and the pattern of the antenna device is set to be similar to the pattern of the circuit main board of the communication electronic equipment, so as to ensure that the antenna device needs to have the sufficiently large area. Generally, a circuit board of the communication electronic device is rectangular, and the antenna device is rectangular, so that the space of the communication electronic device is fully utilized to arrange the antenna device with a large area.
In the embodiment of the present invention, the second conductive layer 12 is rectangular in a first direction Z, and the first direction Z is perpendicular to the first conductive layer 11 and the second conductive layer 12. The first conductor layer 11 has a rectangular shape similar to the second conductor layer 12. The first slit K1 is parallel to the long side of the rectangle, and both ends of the first slit K1 are located inside the rectangle. The second slotted K2 is parallel to the short side of the rectangle, and one end of the second slotted K2 is located on one long side of the rectangle, and the other end is located in the rectangle.
In other embodiments, the first slit K1 and the second slit K2 may be arranged perpendicularly across. The positions of the first slit K1 and the second slit K2 in the second conductor layer 12 may be set as required.
Referring to fig. 4, fig. 4 is a schematic layout position diagram of an antenna device according to an embodiment of the present invention, and when the antenna device 21 is used as a radio frequency identification antenna according to an embodiment of the present invention, as shown in fig. 4, the antenna device 21 is fixed on a circuit board 24 of a communication electronic device. The second conductor layer of the antenna device 21 is disposed toward the circuit board 24.
The diversity antenna 23 and the main antenna 22 are respectively disposed at both ends of the circuit main board 24. The diversity antenna 23 and the main antenna 22 are GSM antennas. When the antenna device in the embodiment of the invention is used as a radio frequency identification antenna, the communication frequency of the antenna device is close to that of a global system for mobile communication (GSM) antenna, and the antenna device and the GSM antenna have serious interference problems. In order to reduce the interference between the antenna device 21 and the GSM antenna, the antenna device 21 is disposed at a position intermediate between the diversity antenna 23 and the main antenna 22.
The communication electronics includes a battery module secured to the circuit board 24. The antenna device 21 is fixed on a side of the battery module away from the circuit board 24. The battery module is not shown in fig. 4.
Optionally, the antenna device may be configured to have a low profile design, such that the thickness of the antenna device in the first direction Z is 1mm to 2mm, which facilitates attachment to a corresponding location of the communication electronic device, such as the back of the battery module or the inner surface of the rear housing.
In the antenna device according to the embodiment of the present invention, the first slot K1 and the second slot K2 that are perpendicular to each other are disposed on the second conductor layer of the radio frequency electric wire, and by adjusting the positions and the sizes of the first slot K1 and the second slot K2, the resonant frequency formed by the first slot K1 and the resonant frequency formed by the second slot K2 can be overlapped with each other within a required operating frequency, thereby increasing the bandwidth of the antenna device.
Meanwhile, the overlapping area of the two slotted resonance frequencies is dual-polarized, and a dual-polarized antenna device is formed, so that one part of the frequency band of the antenna device is vertically polarized, and the other part of the frequency band of the antenna device is horizontally polarized. Therefore, when the antenna device is communicated with the tag, no matter where the tag is located, the polarization can correspond to the tag, and the tag can be conveniently identified.
In the antenna device with the structure according to the embodiment of the present invention, the radiation direction of the signal can be the direction from the first conductor layer 11 to the second conductor layer 12, so that the interference of the signal of the antenna device to other antenna devices at two ends of the circuit board of the communication electronic device can be reduced.
By adopting the insulating medium layer with high dielectric constant and the double-slit design, the size of the antenna device can be only 0.25 lambda0，λ0Is a constant. Whereas the size of a conventional antenna arrangement is typically 0.5 lambda0The size of the antenna device is greatly reduced. Although the size of the antenna device is reduced, since the bandwidth is expanded by combining the resonant frequencies of the two slots, the bandwidth of the antenna device is not affected, and the efficiency of the antenna device can be ensured.
The antenna device realizes a narrow-bandwidth high-resonance working mode through two slotted designs, and other frequency bands outside the working frequency band have space filtering characteristics, so that the interference to the GSM antenna device is reduced. The antenna device is an antenna device with directional radiation, the radiation direction is the direction in which the first conductor layer points to the second conductor layer, and the antenna device can be arranged on the back of a display screen or a battery module, so that the interference to a GSM antenna is reduced. In the embodiment of the present invention, the positions of the first slit K1 and the second slit K2 are not limited to the above embodiment, and the positions of the first slit K1 and the second slit K2 and the sizes of the two may be arranged according to the specific shape and area of the second conductor layer 12, so as to meet the requirement of the operating frequency band. The shapes of the first conductor layer 11 and the second conductor layer 12 are not limited to rectangular shapes, and may be geometric shapes such as square, circle, and ellipse.
The design principle of the antenna device will be described below by taking the first conductive layer and the second conductive layer as an example.
The first conductive layer and the second conductive layer for known design parameters. First, an insulating dielectric layer having a high dielectric constant (dielectric constant greater than 10) is used between the first conductor layer and the second conductor layer, and a first slit is formed in a direction (second direction X) in which the second conductor layer is parallel to the long side, thereby miniaturizing the antenna device. In this case, the antenna device is a single polarization with a narrow bandwidth, the polarization direction is perpendicular to the long side of the second conductor layer, i.e., the polarization direction is parallel to the third direction Y, and the resonance frequency and bandwidth curves are as shown in fig. 5.
Fig. 5 is a graph of resonant frequency and bandwidth provided by an embodiment of the present invention, in fig. 5, the horizontal axis represents frequency in GHz, and the vertical axis represents gain in dB. At this time, due to the miniaturized design, the bandwidth of the first slotted monopole antenna device is less than 20MHz near-6 db, and the required 902MHz-928MHz band cannot be covered at this time.
When a second slot is opened, perpendicular to the first slot, a resonance in another frequency band is formed, which is also a narrow bandwidth single polarization, and the polarization direction is parallel to the second direction X, the resonance frequency and bandwidth curve is shown in fig. 6.
Fig. 6 is another graph of resonant frequency and bandwidth provided by an embodiment of the present invention, and in fig. 6, the horizontal axis represents frequency in GHz and the vertical axis represents gain in dB. The antenna device now has two resonant frequency bands due to the two perpendicular slots, with two troughs for the curve in fig. 6.
The operating frequency band and the bandwidth of the antenna device can be adjusted by adjusting the size (such as the length) of the slots and the position in the second conductor layer, so that the resonant frequencies of the two slots are overlapped with each other in a required operating frequency band, the bandwidth is increased, the operating frequency band covers the 902MHz-928MHz band, and the antenna device with the resonant frequency and bandwidth curves shown in fig. 7 can be finally formed.
Fig. 7 is a graph of the resonance frequency and bandwidth provided by an embodiment of the present invention, and in fig. 7, the horizontal axis represents frequency in GHz and the vertical axis represents gain in dB. At the moment, the antenna device is a dual-polarized antenna device with two vertical slots, and the working frequency band covers the 902MHz-928MHz band near-6 db, so that the bandwidth requirement of the radio frequency identification antenna is met. Thus, the antenna device is vertically polarized in one part of the frequency band and horizontally polarized in the other part of the frequency band.
The antenna device provided by the embodiment of the invention is used as a radio frequency identification antenna and a label for actual measurement, compared with the traditional single-polarization antenna device, the performance is obviously improved, and the experimental result is shown in the following table 1.
TABLE 1
Figure GDA0002018446390000071
As can be seen from table 1, the dual polarization performance of the antenna device according to the embodiment of the present invention can better meet the requirement of a reader. It should be noted that the operating bandwidth of the antenna device includes, but is not limited to, the operating bandwidth of the RFID antenna device (902MHz-928 MHz). The resonance and polarization can be changed by adjusting the slotted design of the antenna device, and the miniaturization and dual-polarization characteristics of the antenna device with different working bandwidths are realized.
Based on the above embodiment, another embodiment of the present invention further provides a communication electronic device, where the communication electronic device is shown in fig. 8, fig. 8 is a schematic structural diagram of the communication electronic device provided in the embodiment of the present invention, and fig. 8 is a side view of fig. 4 in a third direction Y.
The communication electronic device includes: a circuit main board 24; and the radio frequency identification antenna device 21 is arranged opposite to the circuit main board 24. Wherein, the radio frequency identification antenna device is the antenna device described in the above embodiment, and the antenna device includes: the first conductor layer and the second conductor layer are oppositely arranged; an insulating dielectric layer between the first conductor layer and the second conductor layer; the first conductor layer is used for being arranged opposite to the circuit main board and fixed on the main board circuit; the second conductor layer has a first slit and a second slit perpendicular to each other. The first conductive layer faces the circuit board 24 and the second conductive layer faces away from the circuit board 24.
The two ends of the main board of the electrified circuit are respectively provided with a diversity antenna 23 and a main antenna 22; the antenna device 21 is disposed at a position intermediate the diversity antenna 23 and the main antenna 22. A battery module 31 is provided between the antenna device 21 and the circuit board 24.
The communication electronic device has a display screen 32, and the display screen 32 is fixed on a side of the circuit main board 24 facing away from the antenna device 21. The circuit main board 24 may be a PCB board.
The communication electronic equipment provided by the embodiment of the invention can be electronic equipment with a communication function, such as a mobile phone, a tablet personal computer, intelligent wearable equipment and the like. The antenna device 21 is disposed in the middle of the circuit board, and the antenna device 21 is generally disposed on the back of the battery module 31, so as to reduce the interference of the antenna device with the GSM antennas disposed at the two ends of the circuit board 21.
In the communication electronic device, the antenna device described in the above embodiment is adopted, and the second conductor layer of the antenna device has two mutually perpendicular slots (the first slot and the second slot) so that the antenna device has two polarizations. The two slots respectively resonate in different frequency bands, and the two frequency band resonances are combined to expand the bandwidth of the antenna device.
The communication electronic equipment can be a mobile phone, a tablet personal computer and intelligent wearable equipment. The antenna device is used as the RFID antenna, has larger bandwidth, and reduces the interference with the GSM antenna.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An antenna device for use in an electronic apparatus for communication, the electronic apparatus having a circuit board, the antenna device comprising:
the first conductor layer and the second conductor layer are oppositely arranged;
an insulating dielectric layer between the first conductor layer and the second conductor layer;
the first conductor layer is used for being arranged opposite to the circuit main board and fixed on the main board circuit; the second conductor layer is at least provided with a first opening and a second opening which are perpendicular to each other; the first slit and the second slit do not intersect; the radiation direction of the antenna device is directed from the first conductor layer to the second conductor layer; the first conducting layer is electrically connected with the second conducting layer through a feed end; the pattern of the antenna device is similar to the pattern of the circuit main board.
2. The antenna device according to claim 1, wherein the second conductor layer is rectangular in a first direction, the first direction being perpendicular to the first conductor layer and the second conductor layer;
the first slit is parallel to the long edge of the rectangle, and two ends of the first slit are both positioned in the rectangle;
the second opens seam and is on a parallel with rectangular minor face, just the second opens seam one end and is located a long limit of rectangle, the other end is located in the rectangle.
3. The antenna device according to claim 1, wherein the dielectric constant of the dielectric layer is greater than 10.
4. The antenna device according to claim 1, wherein the first conductor layer and the second conductor layer are both copper layers.
5. The antenna device according to claim 1, wherein a diversity antenna and a main antenna are respectively disposed at two ends of the circuit main board;
the antenna device is arranged in the middle of the diversity antenna and the main antenna.
6. The antenna device according to claim 1, wherein the communication electronic apparatus includes a battery module fixed to the circuit board;
the antenna device is fixed on one side of the battery module, which is far away from the circuit main board.
7. A communications electronic device, comprising:
a circuit main board;
the antenna device is arranged opposite to the circuit main board;
wherein the antenna device includes: the first conductor layer and the second conductor layer are oppositely arranged; an insulating dielectric layer between the first conductor layer and the second conductor layer; the first conductor layer is used for being arranged opposite to the circuit main board and fixed on the main board circuit; the second conductor layer is provided with a first opening and a second opening which are perpendicular to each other; the first slit and the second slit do not intersect; the radiation direction of the antenna device is directed from the first conductor layer to the second conductor layer; the first conducting layer is electrically connected with the second conducting layer through a feed end; the pattern of the antenna device is similar to the pattern of the circuit main board.
8. The communication electronic device according to claim 7, wherein a diversity antenna and a main antenna are respectively disposed at two ends of the circuit main board;
the antenna device is arranged in the middle of the diversity antenna and the main antenna.
9. The communication electronic device according to claim 7, wherein a battery module is provided between the antenna device and the circuit board.
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