CN112838362B

CN112838362B - Antenna structure and terminal equipment

Info

Publication number: CN112838362B
Application number: CN202110004006.6A
Authority: CN
Inventors: 胡茂; 程胜祥
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2023-05-09
Anticipated expiration: 2041-01-04
Also published as: CN112838362A

Abstract

The present disclosure relates to an antenna structure and a terminal device. The antenna structure includes: a substrate having a first region and a second region coplanar with the first region; the radio frequency module is positioned on the first area; the antenna comprises at least two antenna radiators and is characterized in that the at least two antenna radiators are located in the second area, each antenna radiator comprises an opening surrounded by at least two side edges, one end of each opening is connected with the radio frequency module through a first slot line, the other end of each opening is connected with a ground wire through a second slot line, and the first slot line is parallel to the second slot line. The first slot line and the second slot line in the embodiment of the disclosure can radiate wireless signals simultaneously when transmitting the wireless signals, so that the radiation path of the wireless signals can be increased, and the radiation efficiency and the working bandwidth of the antenna structure can be improved.

Description

Antenna structure and terminal equipment

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to an antenna structure and a terminal device.

Background

With the rapid development of communication technology and technological requirements, the bandwidth of terminal equipment is wider and wider, and the frequency of receiving and transmitting wireless signals is higher and higher. For example, the frequency of the terminal device for receiving and transmitting wireless signals gradually increases from 450MHz to 960MHz to 1.8GHz, 2.1GHz, 2.4GHz, 3.5GHz and 5GHz; and from 5GHz to 6GHz to 9GHz of Ultra-Wide band (UWB). When receiving and transmitting wireless signals in the frequency range from 6GHz to 9GHz, the conventional antenna has the problems of low radiation efficiency and narrow bandwidth when a plurality of radiators receive and transmit wireless signals.

Disclosure of Invention

The present disclosure provides an antenna structure and a terminal device.

In a first aspect of the disclosed embodiments, there is provided an antenna structure, the antenna structure comprising:

a substrate having a first region and a second region coplanar with the first region;

the radio frequency module is positioned on the first area;

the antenna comprises at least two antenna radiators and is characterized in that the at least two antenna radiators are located in the second area, each antenna radiator comprises an opening surrounded by at least two side edges, one end of each opening is connected with the radio frequency module through a first slot line, the other end of each opening is connected with a ground wire through a second slot line, and the first slot line is parallel to the second slot line.

In some embodiments, two adjacent antenna radiators are disposed in mirror symmetry on the second region.

In some embodiments, the antenna radiator comprises: a first side edge and a second side edge which is spaced from the first side edge and is arranged opposite to the first side edge; the distance from the first side edge to the first area is smaller than the distance from the second side edge to the first area;

the opening is located at the first side edge.

In some embodiments, the area surrounded by at least two sequentially connected sides is rectangular, and the first side and the second side are two long sides of the rectangular area.

In some embodiments, the distance between the first side edge and the second side edge is in the range of 3 millimeters to 5 millimeters.

In some embodiments, the second side edge has a length between 12.5 millimeters and 13.5 millimeters.

In some embodiments, the first region is provided with a copper-clad layer, and the copper-clad layer extends to the second region to form at least one conductive block protruding relative to the surface of the second region;

the conductive block is connected with the ground wire and is positioned between two adjacent antenna radiators.

In some embodiments, the conductive block is provided with a slot that covers a portion of the first region and a portion of the second region.

In some embodiments, the slotted has a slot width in the range of 0.5 millimeters to 1.5 millimeters; the sidewall length of the slot is in the range of 3.5 mm to 4.5 mm.

In some embodiments, a distance between two connection positions where two adjacent antenna radiators are connected to the radio frequency module is less than or equal to 0.5 times a wavelength of the antenna radiator for receiving and transmitting wireless signals.

In a second aspect of the embodiments of the present disclosure, there is provided a terminal device, including: the antenna structure of one or more of the embodiments described above.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

in this disclosed embodiment, each antenna radiator includes an opening surrounded by at least two sides, one end of the opening is connected with the radio frequency module through a first slot line, the other end of the opening is connected with a ground wire through a second slot line, and the first slot line is parallel to the second slot line. Thus, the antenna radiator is respectively connected with the radio frequency module and the ground wire through the first slot line and the second slot line. The first slot line and the second slot line can radiate wireless signals while transmitting energy, so that the radiation path of the wireless signals can be increased through the first slot line and the second slot line, and the radiation efficiency and the working bandwidth of the antenna structure can be improved. And, for coaxial line and microstrip line, the radio frequency module and ground wire are connected respectively to this embodiment of the disclosure adoption first slot line and second slot line, can make the electric field between the slot line more distribute in the air, and then make the radio signal can be easier radiate away, also can improve antenna structure's radiation efficiency and working bandwidth.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1a is a schematic diagram of an antenna structure according to an exemplary embodiment.

Fig. 1b is a schematic diagram two of an antenna structure according to an exemplary embodiment.

Fig. 2 is a schematic diagram three of an antenna structure according to an exemplary embodiment.

Fig. 3 is a schematic diagram four of an antenna structure according to an exemplary embodiment.

Fig. 4a is a schematic diagram of a conventional antenna, according to an example embodiment.

Fig. 4b is a schematic diagram two of a conventional antenna, according to an example embodiment.

Fig. 5a is a schematic diagram three of a conventional antenna shown according to an exemplary embodiment.

Fig. 5b is a schematic diagram four of a conventional antenna, shown according to an example embodiment.

Fig. 6 is a schematic diagram of a terminal device according to an exemplary embodiment.

Fig. 7 is a schematic diagram of standing wave ratio of a terminal device according to an exemplary embodiment.

Fig. 8 is a standing wave ratio diagram ii of a terminal device according to an exemplary embodiment.

Fig. 9 is a schematic diagram showing radiation efficiency of a terminal device according to an exemplary embodiment.

Fig. 10 is a schematic diagram illustrating a simulation of the isolation of two antenna radiators according to an exemplary embodiment.

Fig. 11 is a pattern of an antenna radiator shown according to an exemplary embodiment.

Fig. 12 is a block diagram of a terminal device according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

Fig. 1a is a schematic diagram of an antenna structure according to an exemplary embodiment. As shown in fig. 1a, the antenna structure comprises at least:

a substrate having a first region 101a and a second region 101b coplanar with the first region 101 a;

the radio frequency module 102 is located on the first area 101 a;

at least two antenna radiators 103 are located in the second area 101b, wherein each antenna radiator 103 includes an opening 104 surrounded by at least two sides, one end of the opening 104 is connected to the radio frequency module through a first slot line 107, the other end of the opening 104 is connected to a ground line through a second slot line 108, and the first slot line 107 is parallel to the second slot line 108.

In the embodiment of the disclosure, the antenna structure is applied to the terminal equipment, and can be applied to multiple-in multiple-out (MIMO) communication, positioning or ranging and other scenes. The terminal device may be a wearable electronic device and a mobile terminal, where the mobile terminal includes a mobile phone, a notebook or a tablet computer, and the wearable electronic device includes a smart watch or a smart bracelet, which is not limited in the embodiments of the disclosure.

The substrate may be a carrier plate for carrying various functional modules in the terminal device. The substrate includes a paper substrate, a glass cloth substrate, an epoxy-based substrate, or a metal-based substrate, and embodiments of the present disclosure are not limited.

In the embodiment of the disclosure, the radio frequency module and the antenna radiator can be processed on the substrate to form a printed circuit board in the terminal equipment.

The substrate has a first region and a second region adjacent to the first region, wherein the first region and the second region are different regions on the substrate, and can form the whole region of the substrate. For example, the first region may be a region carrying a plurality of different functional modules, and the second region may be a region carrying the same functional module. For another example, the first region may be a copper-clad region, and the second region may be a region other than the copper-clad region in the substrate region. Wherein the thickness of the copper cladding may be 0.035mm or 0.018mm, embodiments of the present disclosure are not limited.

The radio frequency module is located in a first area, and the first area can be a functional module area except for the antenna radiator carried in the substrate. For example, the first region may also carry an audio module for outputting audio signals, a camera module for image acquisition, or a screen for display, and embodiments of the present disclosure are not limited.

It should be noted that the radio frequency module may include: a first amplifier, an antenna switch, a filter, a diplexer and a second amplifier. The first amplifier is used for amplifying the electric signal in the signal output channel. The antenna switch is used for realizing the switching between the receiving of the electric signal and the transmitting of the electric signal and the switching between different frequency bands of the antenna. The filter is used for filtering signals outside the specific frequency band through the signals of the specific frequency band. The diplexer is used for isolating the transmitted electrical signals and the received electrical signals, so that the antenna can work normally when receiving and transmitting wireless signals simultaneously. The second amplifier is used for amplifying the electric signal of the signal receiving channel. Therefore, the radio frequency module can be used for receiving and transmitting the electric signals, and further the communication function of the terminal equipment is realized.

The at least two antenna radiators are located in a second area, and the second area can be an area for bearing the antenna radiators. The second region may be located on one side of the substrate and may also be located at an included angle between adjacent sides in the substrate, embodiments of the present disclosure are not limited.

In the embodiment of the disclosure, at least two antenna radiators are arranged on the second area at intervals, and the at least two antenna radiators can be used for receiving and transmitting wireless signals with the same or different frequency bands. For example, the at least two antenna radiators may be antenna radiators for transmitting and receiving 6G and 8G wireless signals, respectively, and may also be antenna radiators for transmitting and receiving 6.9G wireless signals, which are not limited in the embodiments of the present disclosure.

For example, the antenna radiator may be composed of a conductive material, which may be printed on the second region to form a printed antenna. Wherein the printed antenna is different from the conventional folded dipole antenna, the front arm and the rear arm of the folded dipole antenna are very close to each other, so as to obtain an input impedance (for example, the input impedance is 300 ohms) which is 4 times that of the symmetrical dipole antenna. The printed antenna does not need to obtain fixed input impedance by arranging radiation branches oppositely arranged in the antenna radiator, so that the antenna design is more flexible.

Illustratively, the conductive material includes, but is not limited to, a metal, an alloy, or a conductive plastic.

In the embodiment of the disclosure, the radio frequency module is located on the first area, and the at least two antenna radiators are located on the second area. That is, the rf module and the antenna radiator are located on different areas on the same substrate. For setting up antenna radiator and radio frequency module on two substrates, this embodiment of the disclosure integrates radio frequency module and antenna radiator on same substrate, can reduce the area that occupies terminal equipment, accords with the development demand of terminal equipment towards frivolous direction.

The first area is larger than or equal to the second area. For example, the first region may be 3/4 of the substrate region and the second region may be 1/4 of the substrate region; alternatively, the first area may be 4/5 of the substrate area, and the second area may be 1/5 of the substrate area.

Each of the antenna radiators includes an opening surrounded by at least two sides. That is, the area surrounded by the antenna radiator is an area with an opening, not a closed area. The shape of the area surrounded by at least two side edges can be set according to actual requirements. For example, the shape of the enclosed area may be triangular, rectangular, or hexagonal, and may also be an irregular pattern, and embodiments of the present disclosure are not limited.

In the embodiment of the present disclosure, the antenna radiator includes at least two sides, and the number of the sides included in the antenna radiator may be two, or may be more than two, for example, four or six.

In some embodiments, as shown in fig. 1b, each antenna radiator may include an opening 104 surrounded by two sides a. One end of the opening 104 is connected with the radio frequency module through a first slot line 107, and the other end of the opening 104 is connected with the ground wire through a second slot line 108. In the embodiment of the disclosure, the area surrounded by the two sides may be triangular.

In other embodiments, as shown in fig. 1a, each antenna radiator may include an opening surrounded by four sides. The area enclosed by the four sides can be rectangular.

In the embodiment of the disclosure, the ground wire and the radio frequency module are both located on the first area. The first slot line and the second slot line are formed by two mutually parallel wires. For coaxial line and microstrip line, first slot line and second slot line can make the electric field between two mutually parallel wires more distribute in the air, and then make radio signal can be easier radiate away, can improve radiation efficiency.

And one end of the opening is connected with the radio frequency module through a first slot line, and the other end of the opening is connected with the ground wire through a second slot line. That is, the first slot line and the second slot line can be used for establishing electrical connection among the radio frequency module, the antenna radiator and the ground line, so that the antenna radiator can better transmit and receive wireless signals. It should be noted that, the first slot line and the second slot line in the embodiments of the present disclosure have a radiation effect, and can transmit and receive a wireless signal while transmitting the wireless signal, so that a radiation path of the wireless signal can be increased, and radiation efficiency and working bandwidth of an antenna structure can be improved.

It should be noted that the distance between the two ends of the opening may be set according to practical situations, for example, the distance between the two ends of the opening may be set in a range of 0.1 to 0.8.

In some embodiments, the side of the antenna radiator may be formed by a third slot line. The area surrounded by the third slot line on the surface of the second area is hollowed, and the hollowed area is not a radiation branch of the antenna radiator and cannot be used for receiving and transmitting wireless signals.

The third slot line may be formed by two parallel wires. In the embodiment of the disclosure, the antenna radiator, the connection line for connecting the radio frequency module, and the connection line for connecting the ground line may be all formed by slot lines. Thus, the antenna manufactured by the same material in the embodiment of the disclosure can enable the antenna to be better in consistency, and does not need to use an additional connecting piece, so that the space occupied by the antenna structure in the terminal equipment can be reduced, and the space utilization rate of the terminal equipment is improved.

In this disclosed embodiment, every antenna radiator includes the opening that is enclosed by two at least side edges of connecting in order, and the radio frequency module is connected through first slot line to open-ended one end, and open-ended other end passes through second slot line connection ground wire, and first slot line is parallel with the second slot line. That is, the antenna radiator is connected to the rf module and the ground through the first slot line and the second slot line, respectively. The first slot line and the second slot line can radiate wireless signals while transmitting energy, so that the radiation path of the wireless signals can be increased through the first slot line and the second slot line, and the radiation efficiency and the working bandwidth of the antenna structure can be improved. And, for coaxial line and microstrip line, the radio frequency module and ground wire are connected respectively to this embodiment of the disclosure adoption first slot line and second slot line, can make the electric field between the slot line more distribute in the air, and then make the radio signal can be easier radiate away, also can improve antenna structure's radiation efficiency and working bandwidth.

In some embodiments, two adjacent antenna radiators are arranged in mirror symmetry on the second region.

The adjacent two antenna radiators have a first center and a second center, and the adjacent two antenna radiators are arranged in mirror symmetry, including: the perpendicular line passing through the center line of the connecting line between the first center and the second center constitutes the symmetry axis of the adjacent two antenna radiators, and the sizes and the shapes of the adjacent two antenna radiators are the same.

In the embodiment of the disclosure, the two adjacent antenna radiators are arranged in a mirror symmetry manner, so that on one hand, the radiation efficiency of the terminal equipment in the same radiation direction can be improved, on the other hand, the possibility that one antenna radiator of the terminal equipment is shielded when the other antenna radiator of the terminal equipment is shielded can be reduced, and further, wireless signals can be transmitted and received by adopting the antenna radiator which is not shielded, and the transmitting and receiving performance of the terminal equipment is improved.

Thus, the distance between the antenna radiators in the second area can be reduced to the greatest extent on the basis of guaranteeing the transceiving performance of the antenna radiators, so that more antenna radiators can be arranged in the second area.

In some embodiments, as shown in fig. 2, the antenna radiator includes: a first side 103a and a second side 103b spaced from and disposed opposite the first side 103 a; the distance from the first side 103a to the first area is smaller than the distance from the second side 103b to the first area;

the opening 104 is located at the first side 103a.

The first side and the second side are two opposite sides which are arranged at intervals in the antenna radiator.

In the embodiment of the disclosure, the first side may be a rear arm of the antenna radiator, the second side may be a front arm of the antenna radiator, and in the transmitting stage of the wireless signal, the electric signal generated by the radio frequency module is firstly transmitted to the rear arm of the antenna radiator through the first slot line of the opening and then transmitted to the front arm of the antenna radiator, so as to excite the rear arm of the antenna radiator and the front arm of the antenna radiator to transmit the wireless signal; in the receiving stage of the wireless signal, the rear arm of the antenna radiator and the front arm of the antenna radiator convert the wireless signal into an electric signal, and the electric signal is transmitted to the radio frequency module through the first slot line of the opening so as to complete the receiving of the wireless signal.

In an embodiment of the disclosure, a distance from the first side edge to the first region is smaller than a distance from the second side edge to the first region, and the opening is located at the first side edge. That is, the opening is disposed proximate the first side of the first region. Therefore, the connection distance between the radio frequency module and the ground wire in the first area, which is connected with the first slot line and the second slot line, can be reduced, the length required by the first slot line and the second slot line is saved, and meanwhile, the space occupied by the first slot line and the second slot line in the case of saving the length required by the first slot line and the second slot line can be reduced, and the space utilization rate of the terminal device can be improved.

In some embodiments, the area enclosed by at least two of the sides is rectangular, and the first side and the second side are two long sides of the rectangular area.

The antenna radiator further comprises a third side and a fourth side, the area surrounded by the first side, the second side, the third side and the fourth side is rectangular, and the third side and the fourth side are two short sides of the rectangular area.

In the embodiment of the disclosure, the rectangular area has an opening, and the rectangular area is a non-radiation area of the antenna radiator, and is not covered with a copper-clad layer.

Illustratively, the included angle between adjacent sides in the enclosed rectangular area may be right angle or rounded, and the embodiments of the present disclosure are not limited.

In some embodiments, the antenna radiator further includes a fifth side and a sixth side, a first end of the fifth side is connected to a first end of the sixth side, a second end of the fifth side and a second end of the sixth side enclose the opening, wherein the first end of the fifth side and the second end of the fifth side are opposite ends, and the first end of the sixth side and the second end of the sixth side are opposite ends.

In the embodiment of the disclosure, an area surrounded by at least two sides is triangular, and the fifth side and the sixth side are two connected sides of the triangle. The angle between the fifth side and the sixth side may be in the range of 0 degrees to 180 degrees, and embodiments of the present disclosure are not limited. In some embodiments, the distance between the first side edge and the second side edge is in the range of 3 millimeters to 5 millimeters.

Illustratively, the distance between the first side edge and the second side edge may be set to 3.5 millimeters.

Illustratively, the length of the second side edge may be set to 13.1 millimeters.

In some embodiments, as shown in fig. 2, the first region is provided with a copper-clad layer, and the copper-clad layer extends to the second region to form at least one conductive block 105 protruding relative to the surface of the second region;

the conductive block 105 is connected to the ground line and is located between two adjacent antenna radiators 103.

The conductive block may be located in the second region and may be formed by copper-clad on a substrate in the second region.

In the embodiment of the disclosure, the conductive block connected with the ground wire is arranged between the two adjacent antenna radiators, so that the current path between the two adjacent antenna radiators can be increased, and the attenuation length of signals can be further increased. Therefore, mutual interference between two adjacent antenna radiators can be reduced by arranging the conductive block, and isolation between the two adjacent radiators is improved.

Illustratively, the conductive bumps may be square, or may be irregularly shaped, and embodiments of the present disclosure are not limited.

In the embodiment of the present disclosure, the size of the conductive block may be set according to practical situations, for example, when the conductive block is rectangular, the long side of the conductive block may be set to 5mm, and the short side of the conductive block may be set to 3 mm, which is not limited in the embodiment of the present disclosure.

In some embodiments, as shown in fig. 3, the conductive block 105 is provided with a slot 106, and the slot 106 covers a portion of the first area and a portion of the second area.

The slotted area may be a clearance area of the antenna structure, and is not provided with a copper-clad layer.

In an embodiment of the disclosure, the grooves on the conductive block may be formed by recessing the conductive block toward the first area. As shown in fig. 3, the direction of the notch of the groove faces the second area, and the bottom of the groove is located in the first area. That is, a portion of the slot is located in the first region and another portion is located in the second region. Thus, compared with the mode that the slots are only arranged in the second area, the slot opening mode of the embodiment of the disclosure can increase the distance between the slots and the slot bottom, further can increase the current path between two adjacent antenna radiators, and increases the attenuation length of signals. Therefore, through arranging the grooves on the conductive blocks, the mutual interference between the adjacent two antenna radiators can be further reduced, and the isolation between the adjacent two radiators can be improved to the greatest extent.

Illustratively, the slot may be square slot or U-shaped slot in shape, and embodiments of the present disclosure are not limited.

In the embodiment of the disclosure, as shown in fig. 3, the conductive block may be rectangular, and the slot may be disposed along a perpendicular bisector of the long side of the conductive block, that is, the direction of disposition of the slot may be perpendicular to the long side of the conductive block, and may be disposed symmetrically with respect to the perpendicular bisector of the long side of the conductive block.

The embodiment of the disclosure also provides a terminal device, which comprises the antenna structure described in one or more embodiments.

The terminal device comprises a mobile terminal or a wearable electronic device. The mobile terminal may include a mobile phone, a notebook or a tablet computer, and the wearable electronic device includes a smart watch or a smart bracelet, which is not limited in the embodiments of the present disclosure.

In the embodiment of the disclosure, an antenna radiator in an antenna structure of a terminal device is connected with a radio frequency module and a ground wire through a first slot line and a second slot line respectively. The first slot line and the second slot line can radiate wireless signals while transmitting energy, so that the radiation path of the wireless signals can be increased through the first slot line and the second slot line, and the radiation efficiency and the working bandwidth of the terminal equipment can be improved. And, for coaxial line and microstrip line, the radio frequency module and ground wire are connected respectively to this embodiment of the disclosure adoption first slot line and second slot line, can make the electric field between the slot line more distribute in the air, and then make radio signal can be easier radiate away, also can improve terminal equipment's radiation efficiency and working bandwidth.

For a better understanding of the above embodiments, the disclosed embodiments are exemplified as follows:

the conventional antenna design in the first terminal device is shown in fig. 4a and 4b, (1) the radiator 201 in the conventional antenna is a disc with a diamond hole in the middle, and the antenna system formed by the front and back sides of the radiator is not completely open, so that the radiation efficiency is low. (2) The conventional antenna is a dual resonant antenna, not a broadband antenna, and thus is greatly affected by the environment. When the environment changes, the antenna may not work properly. (3) In order to ensure that the radiator 201 radiates strongly in a direction away from the main board and radiates weakly in a direction close to the main board, the opposite surface of the radiator disk in the conventional antenna is grounded, which may cause a further decrease in radiation efficiency of the conventional antenna. (4) The mode of coaxial connector and coplanar waveguide is adopted, the main board is connected with the feeding point 202 of the traditional antenna, and is far away from the feeding point 202 of the traditional antenna, so that the antenna requirement of 'according to local conditions' is not met. (5) The isolation between the conventional antennas is improved by reducing the radiation efficiency of the antennas, resulting in poor radiation efficiency of the conventional antennas. (6) The antenna board and the main board where the traditional antenna is arranged are arranged on the two separated boards, and 90 degrees are formed between the two boards, so that the development trend of lightening and thinning of terminal equipment is not met. The first conventional antenna design approach in UWB communication systems fails to meet antenna design requirements.

The conventional antenna design in the second terminal device is shown in fig. 5a and 5b, and is formed of an asymmetrical dipole 300, the asymmetrical dipole 300 having an L-shape, and a feeding point at a portion where the asymmetrical dipole and the main board are connected. However, (1) the standing wave ratio of the second conventional antenna is already more than 3 and is close to 3.5 when the second conventional antenna approaches a frequency point near 6GHz and 9GHz in the frequency range of UWB communication, and if the second conventional antenna is affected by the environment, the conventional antenna may not work normally. (2) The isolation between the two asymmetric dipoles is 10dB, and the energy of one of the two asymmetric dipoles is absorbed by the other dipole by 0.5dB. Also, when the isolation between the two asymmetric dipoles in the conventional antenna is only 10dB, the receiver may not work properly.

Based on the design, the terminal equipment designs the antenna radiator in the second area of the substrate. As shown in fig. 6, the second area is provided with two antenna radiators 103, the two antenna radiators 103 include an opening 104 surrounded by at least two sides, a first slot line at one end of the opening 104 is connected with the rf module, and a second slot line at the other end of the opening 104 is connected with the ground line. The first slot line is parallel to the second slot line, and the two antenna radiators 103 are arranged in mirror symmetry on the second region.

Wherein, the distance between one end of one antenna radiator connected with the radio frequency module and one end of the other antenna radiator connected with the radio frequency module is 17.5 mm; the area surrounded by at least two sides is rectangular, the length of the inner edge of the second side of the antenna radiator is 11.1 mm, and the length of the outer edge is 13.1 mm; the length from the inner edge of the first side to the inner edge of the second side in the antenna radiator is 3 mm, and the length from the outer edge of the first side to the outer edge of the second side in the antenna radiator is 5 mm; the distance between the two ends of the opening was 0.5 mm.

When the conducting block arranged between the two antenna radiators is rectangular, the long side of the conducting block is 5mm, and the short side of the conducting block is 3 mm; the center of the long side of the conductive block is provided with a slot, the width of the slot opening of the slot is 1 millimeter, and the length of the side wall of the slot is 4 millimeters.

And simulating standing-wave ratio and radiation efficiency of the two antenna radiators. As shown in fig. 7 and 8, standing wave ratios of the two antenna radiators in the frequency range from 6GHz to 9GHz are all smaller than 3. In addition, the difference of the wireless signals transmitted and received by the two antenna radiators is not obvious, and the broadband design of the terminal equipment can be realized. As shown in fig. 9, the radiation efficiency of both antenna radiators can reach 90% in the frequency band range from 6GHz to 9GHz. In this way, the standing-wave ratio and the radiation efficiency of the antenna radiator of the terminal equipment provided by the embodiment of the disclosure are obviously better than those of the traditional antenna in the first terminal equipment and the traditional antenna in the second terminal equipment, and the design requirement of broadband antenna can be met.

Fig. 10 is a schematic diagram of a simulation of the isolation of two antenna radiators. As shown in fig. 10, the isolation between the two antenna radiators is significantly better than 15dB. In this way, the isolation of the two antenna radiators in the terminal device provided by the embodiment of the disclosure is obviously better than that of the traditional antenna in the first terminal device and that of the traditional antenna in the second terminal device, so that the energy absorption of one antenna radiator to the other antenna radiator can be reduced from 0.5dB to 0.1dB, and the isolation requirement of the antenna design can be met.

Fig. 11 is a pattern of an antenna radiator. As shown in fig. 11, the 0 degree direction is a direction in which the antenna radiator is far from the first region, and the 180 degree direction is a direction in which the antenna radiator is directed toward the first region, and fig. 11 is a radiation pattern of a wireless signal when the antenna radiator transmits and receives 6.5GHz and 7.9 GHz. As can be seen from fig. 11, the radiation intensity of the wireless signal measured in the direction of 0 degrees and the direction of the area around 0 degrees by the antenna radiator is significantly enhanced; the radiation intensity of the wireless signal measured in the direction of 180 degrees is obviously weakened. Therefore, the antenna radiator of the embodiment of the disclosure can radiate wireless signals better in the direction far away from the first area, and the radiation efficiency of the antenna can be improved.

It should be noted that, the "first" and "second" in the embodiments of the present disclosure are merely for convenience of expression and distinction, and are not otherwise specifically meant.

Fig. 12 is a block diagram of a terminal device according to an exemplary embodiment. For example, the terminal device may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 12, a terminal device may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the terminal device, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the terminal device. Examples of such data include instructions for any application or method operating on the terminal device, contact data, phonebook data, messages, pictures, video, etc. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power component 806 provides power to the various components of the terminal device. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal devices.

The multimedia component 808 includes a screen between the terminal device and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the terminal device is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the terminal device is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects for the terminal device. For example, the sensor assembly 814 may detect an on/off state of the terminal device, a relative positioning of the assemblies, such as a display and keypad of the terminal device, the sensor assembly 814 may also detect a change in position of the terminal device or one of the assemblies of the terminal device, the presence or absence of user contact with the terminal device, an orientation or acceleration/deceleration of the terminal device, and a change in temperature of the terminal device. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the terminal device and other devices, either wired or wireless. The terminal device may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the terminal device may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. An antenna structure, the antenna structure comprising:

the radio frequency module is positioned on the first area;

at least two antenna radiators are positioned in the second area and are arranged in a mirror symmetry mode; each antenna radiator comprises an opening surrounded by at least two side edges, one end of the opening is connected with the radio frequency module through a first slot line, the other end of the opening is connected with a ground wire through a second slot line, the first slot line is parallel to the second slot line, the first slot line and the second slot line are formed by two mutually parallel wires, and the first slot line and the second slot line have a radiation effect;

and the conducting block is connected with the ground wire and is positioned between two adjacent antenna radiators.

2. The antenna structure of claim 1, wherein the antenna radiator comprises: a first side edge and a second side edge which is spaced from the first side edge and is arranged opposite to the first side edge; the distance from the first side edge to the first area is smaller than the distance from the second side edge to the first area;

the opening is located at the first side edge.

3. The antenna structure of claim 2, wherein the area enclosed by at least two of the sides is rectangular, and the first side and the second side are two long sides of the rectangular area.

4. The antenna structure of claim 2, wherein a distance between the first side edge and the second side edge is in a range of 3 millimeters to 5 millimeters.

5. The antenna structure of claim 2, wherein the length of the second side is between 12.5 mm and 13.5 mm.

6. The antenna structure of claim 1, wherein the first region has a copper-clad layer disposed thereon, the copper-clad layer extending to the second region to form at least one conductive bump protruding relative to a surface of the second region.

7. The antenna structure of claim 6, wherein the conductive block is provided with a slot, the slot covering a portion of the first region and a portion of the second region.

8. The antenna structure of claim 7, wherein the slot has a slot width in the range of 0.5 mm to 1.5 mm; the sidewall length of the slot is in the range of 3.5 mm to 4.5 mm.

9. The antenna structure according to claim 1, wherein a distance between two connection positions where two adjacent antenna radiators are connected to the radio frequency module is less than or equal to 0.5 times a wavelength of a radio signal transmitted from the antenna radiator.

10. A terminal device, characterized in that it comprises an antenna structure according to any of claims 1 to 9.