CN111029739B - Antenna unit and electronic equipment - Google Patents

The invention provides an antenna unit and electronic equipment, and relates to the technical field of communication. The antenna unit includes: a floor; the metal isolation wall is arranged around the floor and fixedly connected with the floor; the radiation module is arranged in the metal isolation wall; the feed parts are respectively arranged corresponding to the two ends of the radiation module and are insulated from the floor; and the control switch is arranged outside a cavity formed by the floor and the metal isolation wall, and the feeding part penetrates through the floor and is connected with a signal source or a signal reference ground through the control switch. The feeding part of the scheme of the invention is connected with a signal source or a signal reference ground through the control switch, and the directional diagram can be reconstructed by switching the feeding point and the ground through the control switch; and, use the dual-port feed to the same antenna element, one can form MIMO function to promote the transmission rate of data, and two can form the double polarization, increase the wireless connection ability of antenna, reduce the probability of communication broken string, promote communication effect and user experience.

Antenna unit and electronic equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an antenna unit and an electronic device.

Background

Currently, the millimeter wave Antenna In Package (AiP) module in the prior art has the following disadvantages:

the bandwidth of the prior art is narrow, the current high-pass AiP scheme can only cover n258 (24.25-27.5 GHz) n260 (37.0-40.0 GHz) and n261 (27.5-28.35 GHz) frequency bands, and cannot completely cover the design of multiple frequencies or wide frequencies such as the global mainstream 5G millimeter wave frequency band n257 (26.5-29.5 GHz), n258, n260, n261 and the like which are already defined by the Third Generation Partnership project (3 GPP), which affects the mobile roaming experience of the user;

the number of layers of the AiP module of the millimeter wave antenna in the prior art is more, and is generally 8-12. Meanwhile, the laminated structure is complex, the punching types of the connection of the multilayer boards are more and complex, and the process difficulty and the production consistency of mass production of the AiP module are increased;

at present, the AiP antenna module can realize beam forming only through a phase shifter, cannot realize the inclination of millimeter wave antenna beams, and a plurality of AiP modules work together to increase the coverage.

Disclosure of Invention

The embodiment of the invention provides an antenna unit and electronic equipment, which are used for solving the problems that the antenna in the prior art cannot meet multi-frequency or broadband, and beam inclination is caused by unbalanced feed point and place.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides an antenna unit, including:

a floor;

the metal isolation wall is arranged on the periphery of the floor and is fixedly connected with the floor;

the radiation module is arranged in the metal isolation wall;

the feed parts are respectively arranged corresponding to two ends of the radiation module and are insulated from the floor;

the control switch is arranged outside a cavity formed by the floor and the metal isolation wall, and the feed part penetrates through the floor and is connected with a signal source or a signal reference ground through the control switch.

In a second aspect, an embodiment of the present invention further provides an electronic device, including the antenna unit as described above;

wherein the number of the antenna units is at least one.

In this way, in the embodiment of the present invention, through the metal isolation wall which is arranged around the floor and is fixedly connected with the floor, the radiation module which is arranged in the metal isolation wall, and the feeding portions which are respectively arranged corresponding to the two ends of the radiation module, the feeding portions are insulated from the floor, and can cover a plurality of frequency bands; the feeding part is connected with a signal source or a signal reference ground through the control switch, and a directional diagram can be reconstructed by switching a feeding point (namely a connection point of the control switch and the signal source) and a ground point (namely a connection point of the control switch and the signal reference ground) through the control switch; and, use the dual-port feed to the same antenna element, one can form the Multiple Input Multiple Output (MIMO) function, in order to promote the transmission rate of the data, two can form the dual polarization, increase the wireless connectivity of the aerial, reduce the probability of the communication broken string, promote communication effect and user experience.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 shows a cross-sectional view of an antenna unit according to an embodiment of the invention;

fig. 2 is a schematic structural diagram of an antenna unit according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a millimeter wave array antenna according to an embodiment of the present invention;

FIG. 4 is a reflection coefficient diagram of an antenna element according to an embodiment of the present invention;

FIG. 5 shows a radiation pattern with a frequency of 26GHz for a state in accordance with an embodiment of the invention;

FIG. 6 shows a radiation pattern with a frequency of 39GHz when state in an embodiment of the invention;

FIG. 7 shows the radiation pattern at 26GHz in state two according to an embodiment of the invention;

FIG. 8 shows the radiation pattern at 39GHz in state two according to an embodiment of the invention;

FIG. 9 is a schematic diagram of a connection between an electronic device and a hotspot according to an embodiment of the invention;

FIG. 10 is a second schematic diagram illustrating a connection between an electronic device and a hotspot according to an embodiment of the invention;

FIG. 11 is a third schematic diagram illustrating a connection between an electronic device and a hotspot according to an embodiment of the invention;

description of the reference numerals:

11-a first insulating medium, 12-a second insulating medium, 2-a floor, 21-a through hole, 3-a radiation module, 31-a first radiation module, 32-a second radiation module, 35-a feeder line, 36-a metal sheet, 37-a feed probe, 4-a control switch, 41-a first control switch, 42-a second control switch, 5-a feed part, 6-a metal isolation wall, 61-a metal column and 7-a signal source.

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 some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

At present, all-metal, high-screen-ratio, ultra-thin body and multi-antenna communication become the mainstream and future trend of electronic devices, and with the development of the fifth generation mobile communication 5G, the design of millimeter wave antennas is gradually introduced to some small electronic devices, such as mobile phones, tablets and even notebook computers, so that the effective radiation space divided by each antenna is often reduced under the condition of keeping the overall competitive size of the system, and the performance of the antenna is further reduced, thereby causing the deterioration of wireless experience of users. Or the volume size of the whole system is increased to accommodate a plurality of discrete antennas, so that the whole competitiveness of the product is reduced. The millimeter wave antenna is often in the form of an independent antenna module, and is usually separately disposed with an existing antenna, such as a cellular antenna, and a non-cellular antenna, so that the overall size of the system is easily increased, and the overall competitiveness of the product is reduced.

In addition, the currently planned 5G millimeter wave band includes n257 (26.5-29.5 GHz), n258 (24.25-27.5 GHz), and n261 (27.5-28.35 GHz) frequency bands of 28GHz, and n260 (37.0-40.0 GHz) and provisional n259 (40.5-43.5 GHz) frequency bands of 39 GHz. There is a roaming requirement in the frequency dimension in addition to the above-mentioned space dimension requirement for wireless performance. In order to meet the requirements of broadband, dual-frequency and even multi-frequency, for the patch, a slot is often required on a radiating sheet of the patch or a laminated structure is often adopted, which is difficult to realize dual-polarization or increases the thickness of the millimeter wave antenna module, so that the miniaturization and the whole-machine integration of the millimeter wave antenna module are not facilitated.

Specifically, as shown in fig. 1 to 3, an embodiment of the present invention provides an antenna unit, including:

Optionally, the antenna unit may be a millimeter wave antenna unit, and when the number of the millimeter wave antenna units is multiple, the multiple millimeter wave antenna units form a millimeter wave array antenna.

Optionally, as shown in fig. 1, the antenna unit may further include:

In the embodiment of the invention, the isolation between adjacent antenna units can be improved by the metal isolation walls 6 which are arranged around the floor 2 and fixedly connected with the floor 2; moreover, the radiation module 3 arranged in the metal isolation wall 6 and the feed unit 5 respectively arranged corresponding to two ends of the radiation module 3 are used, the feed unit 5 is insulated from the floor 2, the feed unit 5 is connected with the signal source 7 or the signal reference ground through the control switch 4, and the feed point (namely the connection point of the control switch 4 and the signal source 7) and the ground point (namely the connection point of the control switch 4 and the signal reference ground) can be switched through the control switch 4 to realize the directional diagram reconfiguration; in addition, the millimeter wave loop antenna has a plurality of current paths with different lengths, can cover 24GHz-29.7GHz at a low frequency, can cover 36GHz-44GHz at a high frequency, and basically can cover the global mainstream 5G millimeter wave frequency band defined by 3GPP such as n257, n258, n260, n261 and the like, thereby improving the mobile communication experience of users; and the same antenna unit is fed by double ports, one can form an MIMO function to improve the transmission rate of data, and the other can form dual polarization, thereby increasing the wireless connection capacity of the antenna, reducing the probability of communication disconnection, and improving the communication effect and user experience.

Moreover, the above embodiments of the present invention can be applied to Wireless Communication designs and applications such as Wireless Metropoli Area Networks (WMANs), wireless Wide Area Networks (WWANs), wireless Local Area Networks (WLANs), wireless Personal Area Networks (WPANs), MIMO, radio Frequency Identification (RFID), or even Near Field Communication (NFC), wireless charging (WPCs), or Frequency Modulation (FM); and the method can be applied to the regulation test and the actual design and application of the safety and the health of human bodies and the compatibility with the worn electronic devices (such as hearing aids or heart rate regulators).

The embodiment of the invention also provides electronic equipment, which comprises the antenna unit in any embodiment;

wherein the number of the antenna units is at least one.

Specifically, in the case that the antenna unit is a millimeter wave antenna unit and the number of the millimeter wave antenna units is plural, the plural millimeter wave antenna units may form a millimeter wave array antenna, and the number of the millimeter wave array antennas may be one or plural. The spacing distance between any two millimeter wave antenna units can be determined according to the isolation between the millimeter wave antenna units and the performance of the scanning angle of the millimeter wave array antenna.

Specifically, fig. 4 is a reflection coefficient diagram of one of the millimeter wave antenna units, where the abscissa is a frequency band and the ordinate is a reflection coefficient. Calculated by-10 dB, the antenna unit can cover 24GHz-29.7GHz and 36GHz-44GHz, and basically can cover global mainstream 5G millimeter wave frequency bands such as n257, n258, n260 and n261, so that the mobile communication experience of users is improved. FIG. 5 is a radiation pattern with a frequency of 26GHz in state one, and S1 is a radiation range; FIG. 6 is a radiation pattern with a frequency of 39GHz in state one, and S2 is a radiation range; FIG. 7 is a radiation pattern with a frequency of 26GHz in state two, and S3 is the radiation range; fig. 8 shows the radiation pattern with a frequency of 39GHz in state two, and S4 is the radiation range.

In summary, in the above embodiments of the present invention, the metal isolation wall 6 disposed around the floor 2 and fixedly connected to the floor 2 can improve the isolation between adjacent antenna units; moreover, the radiation module 3 arranged in the metal isolation wall 6 and the feed unit 5 respectively arranged corresponding to two ends of the radiation module 3 are used, the feed unit 5 is insulated from the floor 2, the feed unit 5 is connected with the signal source 7 or the signal reference ground through the control switch 4, and the feed point (namely the connection point of the control switch 4 and the signal source 7) and the ground point (namely the connection point of the control switch 4 and the signal reference ground) can be switched through the control switch 4 to realize the directional diagram reconfiguration; in addition, the millimeter wave loop antenna has a plurality of current paths with different lengths, can cover 24GHz-29.7GHz at a low frequency, can cover 36GHz-44GHz at a high frequency, and basically can cover the global mainstream 5G millimeter wave frequency band defined by 3GPP such as n257, n258, n260, n261 and the like, thereby improving the mobile communication experience of users; and the same antenna unit is fed by double ports, one can form an MIMO function to improve the transmission rate of data, and the other can form dual polarization, thereby increasing the wireless connection capacity of the antenna, reducing the probability of communication disconnection, and improving the communication effect and user experience.

For convenience of description, the above embodiments have been described by using a mobile phone as a specific example of the electronic device of the present invention, and it can be understood by those skilled in the art that the present invention can be applied to other electronic devices besides a mobile phone as an electronic device, such as a tablet computer, an electronic book reader, an MP3 (motion Picture Experts Group Audio Layer III) player, an MP4 (motion Picture Experts Group Audio Layer IV) player, a laptop computer, a car computer, a desktop computer, a set-top box, an intelligent television, a wearable device, and the like, which are within the scope of the embodiments of the present invention.

The embodiments in the present specification 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.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the true scope of the embodiments of the present invention.

Finally, it should also be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or terminal device that comprises the element.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.