CN108736144B - Mobile terminal - Google Patents

Abstract

The invention discloses a mobile terminal which comprises a main board, a WiFi main antenna, a WiFi diversity antenna, an LTE diversity antenna, a plurality of matching pieces and a selection switch, wherein the main board is provided with a grounding part; the WiFi main antenna, the WiFi diversity antenna and the LTE diversity antenna are arranged on the main board, and the WiFi diversity antenna and the LTE diversity antenna are arranged separately; the matching pieces and the selection switch are arranged on a signal feed path of the LTE diversity antenna in parallel, and the selection switch is used for selecting one of the matching pieces to be connected into the signal feed path. The mobile terminal can improve the isolation between the WiFi diversity antenna and the LTE diversity antenna, realizes the selection of the sending frequency of the LTE diversity antenna, and the sending frequency of the LTE diversity antenna is more flexible and diversified.

Description

mobile terminal

technical field

The invention belongs to the field of communication technologies, and in particular relates to a mobile terminal.

Background technique

With the rapid development of mobile communication technology, the WiFi function on mobile terminals, such as mobile terminals, has been used more and more widely. Among them, it is a very important direction to introduce multi-antenna technology in WiFi communication to enhance the anti-interference ability of WiFi and improve the throughput rate to improve the effectiveness and reliability of WiFi communication. Because the mobile phone terminal is small and the environment is very complex, some solutions are to use LTE diversity and WiFi diversity to share antennas to realize WiFi multi-antenna communication. However, due to the problem of isolation, when using this method, if the mobile phone is used as a hotspot, WiFi cannot be used. Diversity antennas greatly limit the use scenarios of WiFi multi-antennas; if the separation scheme of LTE diversity and WiFi diversity is adopted, due to the thinness of the mobile phone and the complexity of wireless functions, the isolation between the main antenna and the diversity antenna becomes an intractable problem.

SUMMARY OF THE INVENTION

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the present invention needs to provide a mobile terminal, which can improve the isolation between the WiFi diversity antenna and the LTE diversity antenna, and realize flexible selection of the transmission frequency of the LTE diversity antenna.

In order to solve the above problem, the present invention proposes a mobile terminal, the mobile terminal includes a main board, the main board has a grounding part; a WiFi main antenna, a WiFi diversity antenna and an LTE diversity antenna are arranged on the main board, wherein the The WiFi diversity antenna is separated from the LTE diversity antenna; a plurality of matching parts and a selection switch are arranged in parallel with the selection switch on the signal feeder of the LTE diversity antenna, and the selection switch is used for for selecting one matching piece among the plurality of matching pieces to be connected to the signal feeder.

The mobile terminal of the present invention can increase the isolation by adopting the separate setting method of the WiFi diversity antenna and the LTE diversity antenna. By selecting different matching parts to access the signal feeder of the LTE diversity antenna through the selection switch, the LTE diversity antenna can cover the frequency band. The selection of the LTE diversity antenna is more flexible and diverse.

In some embodiments of the present invention, a first ground member, the first ground member is connected to the ground portion of the motherboard, and the first ground member is located between the WiFi main antenna and the LTE diversity antenna , while ensuring the isolation between the WiFi main antenna and the LTE diversity antenna, the WiFi diversity antenna and the LTE diversity antenna can be used at the same time, avoiding the problem that the WiFi diversity antenna cannot be used when the mobile terminal is used as a hotspot.

In some embodiments of the present invention, the mobile terminal further includes: a GPS antenna; and a second grounding member, the second grounding member is connected to the grounding portion of the main board, and is located between the LTE diversity antenna and the GPS antenna Therefore, the isolation between the LTE diversity antenna and the GPS antenna can be improved.

In some embodiments of the present invention, the WiFi main antenna, the LTE diversity antenna, the first grounding member, the GPS antenna and the second grounding member are respectively located on the upper part of the mobile terminal, and the The WiFi diversity antenna is located at the lower part of the mobile terminal.

In some embodiments of the present invention, the main antenna of the mobile terminal is located at the lower right part of the mobile terminal.

In some embodiments of the present invention, the selector switch comprises a single-pole, multi-throw switch.

In some embodiments of the present invention, the mobile terminal includes an earphone holder, the first grounding member is an earphone holder of the mobile terminal, and the earphone holder is connected to the ground portion of the main board.

In some embodiments of the present invention, the second grounding member includes a camera of the mobile terminal, and the camera is connected to the grounding portion of the main board.

In some embodiments of the present invention, the camera is a rear camera.

In some embodiments of the present invention, the camera includes a body and a metal decoration, and the body and the metal decoration are respectively connected to the grounding portion of the main board.

Description of drawings

FIG. 1 is a schematic diagram of a mobile terminal according to an embodiment of the present invention; and

FIG. 2 is a schematic diagram of a mobile terminal according to another embodiment of the present invention.

Reference number:

mobile terminal 100,

Mainboard 10, WiFi main antenna 20, WiFi diversity antenna 21, LTE diversity antenna 30 and first grounding member 40, GPS antenna 50 and second grounding member 60,

Main antenna 70 , headphone holder body 41 and ground wire 42 , camera body 61 and metal decoration 62 , matching piece 80 , selection switch 90 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

The following describes the mobile terminal according to the embodiments of the present invention with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 1 , the mobile terminal 100, such as a mobile phone, includes: a main board 10, a WiFi main antenna 20, a WiFi diversity antenna 21, an LTE diversity antenna 30, and a first Grounding member 40 .

The main board 10 has a grounding part such as the main ground system of the mobile terminal 100 , the WiFi main antenna 20 , the WiFi diversity antenna 21 and the LTE diversity antenna 30 are arranged on the main board 10 , and the WiFi main antenna 20 includes 2.4G and 5G or both of them. One WiFi main antenna 20 can realize double-feeding of signals through a pair of antennas, as shown in FIG. 1 , or can be realized by using two antennas to feed separately. The WiFi diversity antenna 21 and the LTE diversity antenna 30 are arranged separately. Therefore, compared to the way that the WiFi diversity antenna 21 and the LTE diversity antenna 30 are collinear, the WiFi diversity antenna 21 can also be used when the mobile terminal 100 is used as a hotspot.

The first grounding member 40 is connected to the grounding portion of the main board 10, such as the main ground system of the mobile terminal 100, and the first grounding member 40 is located between the WiFi main antenna 20 and the LTE diversity antenna 30, so as to improve the connection between the WiFi main antenna 20 and the LTE diversity antenna 30. Isolation between LTE diversity antennas 30 .

The mobile terminal 100 in the embodiment of the present invention solves the problem of isolation between the WiFi main antenna 20 and the LTE diversity antenna 30 by adopting a manner of separating the WiFi diversity antenna 21 and the LTE diversity antenna 30, and using the first grounding member 40, Therefore, while ensuring the isolation between the WiFi main antenna 20 and the LTE diversity antenna 30, the WiFi diversity antenna 21 and the LTE diversity antenna 30 can be used at the same time, avoiding the problem that the WiFi diversity antenna 21 cannot be used when the mobile terminal 100 is used as a hotspot. .

As shown in FIG. 1 , the mobile terminal 100 further includes a GPS antenna 50 and a second ground member 60. The second ground member 60 is connected to the ground portion of the main board 10 and is located between the LTE diversity antenna 30 and the GPS antenna 50, that is, The isolation between the LTE diversity antenna 30 and the GPS antenna 50 can be improved by the second ground member 60 .

In an embodiment of the present invention, as shown in FIG. 1 , the WiFi main antenna 20 , the LTE diversity antenna 30 , the first grounding member 40 , the GPS antenna 50 and the second grounding member 60 are respectively located on the upper part of the mobile terminal 100 , and the WiFi diversity The antenna 21 is located at the lower part of the mobile terminal 100 .

Specifically, as shown in FIG. 1 , the WiFi diversity antenna 21 is located in the lower left corner of the mobile terminal 100 . Generally, the main antenna 70 of the mobile terminal 100 is located in the lower right corner of the mobile terminal 100 , and the WiFi diversity antenna 21 and the main antenna 70 are multiplexed. The radiator, the WiFi diversity antenna 21 adopts a single cable head feed, and the WiFi main antenna 20 is located at the upper right of the mobile terminal 100, so as to prevent the WiFi performance from being deteriorated sharply when the mobile terminal 100 is used in landscape orientation.

According to the installation positions of the respective antennas, in an embodiment of the present invention, the mobile terminal 100 includes an earphone holder, the first grounding member 40 may include an earphone holder, and the earphone holder is connected to the ground portion of the main board 10 , generally, as shown in FIG. 1 As shown, the earphone holder includes the earphone holder body 41 and the ground wire 42, such as the ground wire outside the earphone holder body 41 pin, and the earphone holder is connected to the main ground system of the mobile terminal 100 through the ground wire 42. The impedance is within 1 ohm, that is to say, the ground wire 42 of the earphone holder is grounded to improve the isolation between the WiFi main antenna 20 and the LTE diversity antenna 30 .

Specifically, the second grounding member 60 includes a camera of the mobile terminal 100 , and the camera is connected to the grounding portion of the main board 10 . That is, the degree of isolation between the LTE diversity antenna 30 and the GPS antenna 50 is improved by grounding the camera. Specifically, according to the location setting, the grounded camera may be the rear camera of the mobile terminal 100 . As shown in FIG. 1 , the camera includes a main body 61 and a metal decoration 62. The main body 61 and the metal decoration 62 are respectively connected to the grounding part of the main board 10 of the mobile terminal 100, and the impedance is within 1 ohm. The main body 61 and its metal decoration 62 are grounded to improve the isolation between the LTE diversity antenna 30 and the GPS antenna 50 .

In a nutshell, the main WiFi antenna 20 , the LTE diversity antenna 30 and the GPS can be effectively improved by grounding the grounding parts multiplexed with general structural parts such as the main body 61 and the metal decoration 62 of the camera and the ground wire 42 of the earphone holder. The isolation between the antennas 50, especially the low frequency diversity band antennas.

As shown in FIG. 1 , a matching member 80 , such as an inductor, a capacitor or a 0 ohm resistor, is also provided on the signal feeder of the LTE diversity antenna 30 . Through the matching of the matching member 80 , the LTE diversity antenna 30 can cover 935-960 MHz and 1805-2690 MHz. frequency band.

Further, as shown in FIG. 2, which is a schematic diagram of a mobile terminal according to another embodiment of the present invention, a selection switch 90 may be provided on the signal feeder of the LTE diversity antenna 30, and the selection switch 90 is connected to a plurality of matching parts 80, Through the selection switch 90, one of the multiple matching elements 80 can be selected to be connected to the signal feeder, so that the frequency band coverage of the LTE diversity antenna 30 can be selected. For example, a selector switch 90 such as a SPMT switch is connected in series on one of the ground pins of the LTE diversity antenna 30 , and a matching piece 80 is connected in series with each channel of the SPMT switch and is connected to the main ground system of the mobile terminal 100 , the opening or closing of the SPMT switch can select one of the grounding paths, and then through the combination of different states, the LTE diversity antenna 30 can cover different frequency bands such as 729-960MHz and 1805-2690MHz.

To sum up, the mobile terminal 100 according to the embodiment of the present invention can meet the requirement of coexistence of the LTE diversity antenna 30 and the WiFi diversity antenna 21 under the condition of ensuring the isolation degree, and at the same time, it can effectively reduce the number of manpower when the mobile terminal 100 is used in the horizontal screen. The impact of handgrip on WiFi performance.

It should be noted that, in the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical" and "horizontal" , "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, in the description of the present invention, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. a mobile terminal, is characterized in that, comprises: a mainboard, the mainboard has a grounding portion; The WiFi main antenna, the WiFi diversity antenna and the LTE diversity antenna are arranged on the motherboard, wherein the WiFi diversity antenna and the LTE diversity antenna are separated and arranged, and the LTE diversity antenna is located on the upper part of the mobile terminal, so the The WiFi diversity antenna is located in the lower left part of the mobile terminal, and the WiFi main antenna is located in the upper right part of the mobile terminal, wherein the WiFi main antenna includes a WiFi main antenna of 2.4G and 5G or one of the two; A plurality of matching elements and a selection switch, the plurality of matching elements are arranged in parallel with the selection switch on the signal feeder of the LTE diversity antenna, and the selection switch is used to select one matching element among the plurality of matching elements to be connected. into the signal feeder. 2. The mobile terminal of claim 1, further comprising: a first grounding member, the first grounding member is connected to the grounding part of the main board, and the first grounding member is located between the WiFi main antenna and the LTE diversity antenna. 3. The mobile terminal of claim 2, further comprising: GPS antenna; A second grounding member, the second grounding member is connected to the grounding portion of the main board, and is located between the LTE diversity antenna and the GPS antenna. 4. The mobile terminal of claim 3, wherein, The first grounding member, the GPS antenna and the second grounding member are respectively located on the upper part of the mobile terminal. 5. The mobile terminal of claim 4, wherein the main antenna of the mobile terminal is located at the lower right part of the mobile terminal. 6. The mobile terminal of claim 1, wherein the selection switch comprises a single-pole, multi-throw switch. 7 . The mobile terminal according to claim 2 , wherein the mobile terminal comprises an earphone holder, the first grounding member is an earphone holder of the mobile terminal, and the earphone holder is connected to a grounding portion of the motherboard. 8 . connected. 8 . The mobile terminal of claim 3 , wherein the second grounding member comprises a camera of the mobile terminal, and the camera is connected to the grounding portion of the main board. 9 . 9. The mobile terminal of claim 8, wherein the camera is a rear camera. 10 . The mobile terminal of claim 8 , wherein the camera comprises a body and a metal decoration, and the body and the metal decoration are respectively connected to the grounding part of the main board. 11 .

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