CN215497089U - Antenna device and electronic apparatus - Google Patents

Abstract

The application discloses an antenna device and electronic equipment, wherein the antenna device comprises a shielding case, a PCB (printed Circuit Board) and a radio frequency integrated circuit; the shielding cover is arranged on the PCB, a first slot and a second slot are arranged on the shielding cover, and the first slot is communicated with the second slot; the part of the shielding case between the two second slots forms a coplanar waveguide line; the shielding case is connected with the radio frequency integrated circuit through the coplanar waveguide line. The antenna device and the electronic equipment are reasonable in structural design, the structure of the antenna device is optimized, and therefore the miniaturization design of the electronic equipment is facilitated, and meanwhile multi-band communication is convenient to achieve.

Description

Antenna device and electronic apparatus

Technical Field

The application belongs to the technical field of antennas, and particularly relates to an antenna device and electronic equipment.

Background

An antenna is a converter that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium or vice versa, a component for transmitting or receiving an electromagnetic wave in a radio apparatus, an engineering system for radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy, etc., all of which use electromagnetic waves to transmit information, and which operates by means of an antenna, and in addition, in the aspect of transmitting energy by electromagnetic waves, non-signal energy radiation also requires an antenna.

In the prior art, with the development of mobile communication, especially the popularization of 5G (5th generation mobile communication technology) communication technology worldwide, on the one hand, antennas need more frequency bands to meet communication requirements. On the other hand, as the functions of electronic devices such as mobile phones and tablet computers are increased, the corresponding hardware structures are also increased, for example, the number of cameras is increased due to the higher quality requirement of photographing, and the hardware structures occupy the space of the antenna greatly due to the miniaturization requirement of the electronic devices.

Therefore, the antenna structure capable of implementing multiband communication in the prior art is often very complex, which is not favorable for the miniaturization design of electronic equipment.

SUMMERY OF THE UTILITY MODEL

The present application is directed to an antenna device and an electronic apparatus that solve at least one of the problems of the background art.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides an antenna apparatus, where the antenna apparatus includes a shielding case, a PCB, and a radio frequency integrated circuit;

the shielding cover is arranged on the PCB, a first slot and a second slot are arranged on the shielding cover, and the first slot is communicated with the second slot; the part of the shielding case between the two second slots forms a coplanar waveguide line;

the shielding case is connected with the radio frequency integrated circuit through the coplanar waveguide line.

In a second aspect, an embodiment of the present application provides an electronic device, which includes the antenna apparatus described above.

In the embodiment of the application, the first slot and the second slot are arranged on the shielding cover, the part of the shielding cover before the two second slots forms the coplanar waveguide line, and the shielding cover is connected with the radio frequency integrated circuit through the coplanar waveguide line to form the slotted antenna. The slotted antenna is formed on the shielding cover, so that the structure of the shielding cover is fully utilized, the positions and the number of the corresponding first slots are favorably arranged on the shielding cover according to the required frequency band number so as to form multi-band communication, the internal structure of the antenna device in the electronic equipment is favorably optimized, and the miniaturization design of the electronic equipment is favorably realized.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an antenna device according to an embodiment of the present application;

fig. 2 is a schematic view of an alternative view of an antenna arrangement according to an embodiment of the present application;

fig. 3 is a side view of an antenna arrangement according to an embodiment of the present application;

fig. 4 is a schematic diagram of a pad of an antenna arrangement according to an embodiment of the application;

fig. 5 is a schematic structural diagram of a second implementation of an antenna arrangement according to an embodiment of the present application;

fig. 6 is a schematic internal structural view of a second implementation of an antenna arrangement according to an embodiment of the present application;

fig. 7 is a schematic diagram of the internal structure of a third implementation of an antenna arrangement according to an embodiment of the present application;

fig. 8 is a schematic diagram of the internal structure of a fourth implementation of an antenna arrangement according to an embodiment of the application.

Reference numerals:

in the figure: 1. a shield case; 11. a second corner cut; 2. a PCB board; 21. the ground of the PCB; 3. a radio frequency integrated circuit; 41. a first slot; 42. a second slot; 5. a coplanar waveguide line; 6. a microstrip line; 61. a first corner cut; 7. a pad; 71. and (6) drilling a ground hole.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. 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 application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

An antenna device and an electronic apparatus according to an embodiment of the present application are described below with reference to fig. 1 to 8.

As shown in fig. 1 to 8, the present embodiment provides an antenna device, which is used in an electronic device such as a mobile phone, a tablet computer, a game machine, and the like to transmit or receive electromagnetic waves, so as to implement a communication function of the electronic device.

Specifically, as shown in fig. 1, the antenna device includes a shield case 1, a PCB board 2, and a radio frequency integrated circuit 3.

Further specifically, the shielding case 1 is disposed on the PCB 2, a first slot 41 and a second slot 42 are disposed on the shielding case 1, and the first slot 41 and the second slot 42 are communicated; the part of the shield can 1 between the two second slots 42 forms a coplanar waveguide line 5; the shielding case 1 is connected with the radio frequency integrated circuit 3 through the coplanar waveguide line 5.

In the present embodiment, the multiband communication of the antenna apparatus can be realized by providing the plurality of first slots 41 on the shield case 1. It should be noted that the length of the first slot 41 is half of the wavelength of the desired antenna frequency, that is, a plurality of first slots 41 with different lengths are arranged on the shielding case 1 to realize multi-band communication of the antenna device.

The rf signal is fed to the shield can 1 by providing the first slot 41 and the second slot 42 in the shield can 1, and forming the coplanar waveguide 5 by the portion of the shield can 1 between the two second slots 42, and the shield can 1 is connected to the rf integrated circuit 3 by the coplanar waveguide 5. Because the slotted antenna is formed on the shielding case 1, the structure of the shielding case 1 is fully utilized, and the positions and the number of the corresponding first slots 41 are set on the shielding case 1 according to the required frequency band number so as to form multi-band communication, so that the internal structure of the antenna device in the electronic equipment is optimized, and the miniaturization design of the electronic equipment is facilitated.

In addition, the antenna device utilizes the ground 21 of the PCB board as a reflecting plate, so that the gain of the antenna is increased, and the wireless communication experience of the electronic equipment is improved.

Optionally, the shielding cage 1 is a cuboid. The cuboid shielding case 1 can be simply and firmly fixed on the PCB 2, and the cuboid shielding case 1 can make full use of the space inside the electronic equipment without interfering other structures, thereby being beneficial to the layout inside the electronic equipment.

Optionally, the antenna device further comprises a microstrip line 6; one end of the microstrip line 6 is connected with the coplanar waveguide line 5, and the other end of the microstrip line is connected with the radio frequency integrated circuit 3; one end of the microstrip line 6 connected with the coplanar waveguide line 5 is provided with a first chamfer 61 so as to be connected with the coplanar waveguide line 5 in an impedance matching manner. The coplanar waveguide line 5 is connected with the radio frequency integrated circuit 3 through the microstrip line 6, and the connection mode is simpler. Because the line width of the coplanar waveguide line 5 is different from the line width of the microstrip line 6, impedance change occurs when the microstrip line 6 is changed to the coplanar waveguide line 5, and the first cut angle 61 is arranged on the microstrip line 6, so that the impedance change of the impedance at the joint of the microstrip line 6 and the coplanar waveguide line 5 is smooth, and the performance of the antenna is better ensured.

Optionally, a second chamfer 11 is disposed at a junction of the shield 1 corresponding to the microstrip line 6 and the coplanar waveguide line 5.

In the above embodiment, the second chamfer 11 can further make the impedance change gentle at the junction of the microstrip line 6 and the coplanar waveguide line 5 to better ensure the performance of the antenna.

Alternatively, in the second embodiment, as shown in fig. 5 and 6, the radio frequency integrated circuit 3 and the microstrip line 6 are disposed inside the shield case 1. This can further practice thrift the inside space of electronic equipment to can make full use of shield cover 1's inner space, structural design is more reasonable, can further realize electronic equipment's miniaturization.

Optionally, the radio frequency integrated circuit 3 and the microstrip line 6 are disposed outside the shield case 1.

The radio frequency integrated circuit 3 is arranged close to the shielding case 1, and the path loss can be effectively reduced. Meanwhile, the shielding case 1 is arranged outside the shielding case 1, which is beneficial to improving the space utilization rate in the shielding case 1, so that more chips can be conveniently arranged in the shielding case 1 to fully utilize the shielding function of the shielding case 1.

Optionally, as illustrated in fig. 3 and 4, the antenna device further includes a pad 7; the PCB 2 is provided with a bonding pad 7, a grounding hole 71 is arranged on the bonding pad 7, and the bonding pad 7 is connected with the ground 21 of the PCB through the grounding hole 71; the shielding case 1 is soldered to the pad 7. Fig. 3 is a side view in which the PCB board 2 is hidden.

In the above embodiment, the connection of the shield can 1 and the PCB board 2 is simpler. The shielding case 1 is connected with the bonding pad 7 on the PCB 2 through a welding process, and the bonding pad 7 is connected with the ground 21 of the PCB through the grounding hole 71, so that a closed cavity is formed between the shielding case 1 and the ground 21 of the PCB, the chip is arranged in the cavity, and a good shielding effect can be achieved. Furthermore, the shield can 1 has a certain height, so that the antenna device can form good radiation.

In addition, the radio frequency signal output solder ball of the radio frequency integrated circuit 3 is connected with the microstrip line 6 which is arranged on the surface of the PCB 2, and the connection mode is simpler.

In some embodiments, the width of the slot is 0.1mm to 0.8mm, and since the length of the slot is half of the wavelength of the required antenna frequency, and the required antenna is designed to be a high-frequency antenna, such as a UWB antenna, a 5G WIFI antenna, and the like, the length is short, the shielding effect of the shielding case 1 is not affected, and the space utilization rate of the electronic device is improved.

In the third embodiment, the number of the first slots 41 is plural, and the plural first slots 41 are distributed radially. The antenna device has a simple structure, makes full use of the shielding case 1, can realize multi-band communication of the antenna device, and is very convenient to use.

In the fourth embodiment, the number of the first slots 41 is plural, and plural first slots 41 are distributed in parallel in a direction perpendicular to the coplanar waveguide line 5. The antenna device is convenient to arrange on the shielding case 1, can realize multi-band communication of the antenna device, and is very convenient to use

Optionally, a plurality of the first slots 41 are distributed on both sides of the coplanar waveguide line 5. This further increases the communication frequency range of the antenna device and has a reasonable structure.

In this embodiment, the antenna apparatus may be applied to wireless communication designs such as Wireless Metropolitan Area Network (WMAN), Wireless Wide Area Network (WWAN), Wireless Local Area Network (WLAN), Wireless Personal Area Network (WPAN), Multiple Input Multiple Output (MIMO), Radio Frequency Identification (RFID), Near Field Communication (NFC), wireless charging (WPC), or FM, and has a wide application range.

According to a second aspect of the present application, there is provided an electronic device including the antenna apparatus described above. The antenna device of the electronic equipment has a simple structure, can realize multi-band communication, and contributes to the miniaturization layout of the electronic equipment.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An antenna device is characterized by comprising a shielding case (1), a PCB (printed circuit board) board (2) and a radio frequency integrated circuit (3);

the shielding case (1) is arranged on the PCB (2), a first slit (41) and a second slit (42) are arranged on the shielding case (1), and the first slit (41) is communicated with the second slit (42); the part of the shielding case between the two second slots (42) forms a coplanar waveguide line (5);

the shielding case is connected with the radio frequency integrated circuit (3) through the coplanar waveguide line (5).

2. The antenna device according to claim 1, characterized in that it further comprises a microstrip line (6);

one end of the microstrip line (6) is connected with the coplanar waveguide line (5), and the other end of the microstrip line is connected with the radio frequency integrated circuit (3);

one end of the microstrip line (6) connected with the coplanar waveguide line (5) is provided with a first chamfer (61) so as to be connected with the coplanar waveguide line (5) in an impedance matching manner.

3. The antenna device according to claim 2, characterized in that the shield (1) is provided with a second chamfer (11) in correspondence of the connection of the microstrip line (6) and the coplanar waveguide line (5).

4. The antenna device according to claim 2, characterized in that the radio frequency integrated circuit (3) and the microstrip line (6) are both arranged inside the shield (1).

5. The antenna device according to claim 2, characterized in that the radio frequency integrated circuit (3) and the microstrip line (6) are both arranged outside the shielding cage (1).

6. The antenna device according to claim 1, characterized in that it further comprises a pad (7);

the PCB (2) is provided with a bonding pad (7), a grounding hole (71) is formed in the bonding pad (7), and the bonding pad (7) is connected with the ground (21) of the PCB through the grounding hole (71);

the shielding case (1) is welded with the bonding pad (7).

7. The antenna device according to claim 1, wherein the number of the first slots (41) is plural, and the plural first slots (41) are radially distributed.

8. The antenna device as claimed in claim 1, wherein the number of the first slots (41) is plural, and the plural first slots (41) are distributed in parallel in a direction perpendicular to the coplanar waveguide line (5).

9. The antenna device as claimed in claim 8, characterised in that a plurality of said first slots (41) are distributed on both sides of said coplanar waveguide line (5).

10. An electronic device, characterized in that it comprises an antenna device according to any of claims 1-9.

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