CN105655689A - Antenna device and mobile terminal - Google Patents

Abstract

The invention discloses an antenna device, comprising: the frame is made of a signal shielding material and is connected end to end, at least two micro-slit belts are arranged on the frame and divide the frame into at least two independent frame portions, the at least two frame portions comprise first antennas, the micro-slit belts are provided with at least one micro slit, and the width of the micro slit is smaller than or equal to 0.2 mm; a first matching circuit electrically connected to the first antenna; and the first radio frequency transceiver circuit is electrically connected to the first matching circuit. The mobile terminal applying the antenna device has the seamless frame effect of the full-signal shielding material under the visual sense of naked eyes. The invention also discloses a mobile terminal.

Description

Antenna device and mobile terminal

technical field

The present invention relates to the technical field of antennas, in particular to an antenna device and a mobile terminal using the antenna device.

Background technique

With the development of science and technology and users' requirements for the signal and appearance quality of electronic products are getting higher and higher. At present, many electronic products with antennas such as mobile phones on the market use metal as the outer shell (including side, back cover, etc.) to While ensuring the strength of use, it satisfies the appearance of texture. As we all know, metal is a signal shielding material. In order to avoid the signal shielding of the metal casing from affecting the efficiency of the antenna, the casing is usually designed to combine metal and non-metal, so that the antenna structure is located in the non-metal area; or the isolation area made of non-metal material is located in the The end of the metal shell completely separates the part of the metal shell close to the antenna from other parts of the metal shell, thereby isolating the antenna area from other areas of the metal shell. However, the above design will also lead to the inability of the electronic product to adopt the design of the seamless frame of the full signal shielding material, which will affect the overall sense and aesthetic appearance of the electronic product.

Contents of the invention

The technical problem to be solved by the present invention is to provide an antenna device, so that a mobile terminal using the antenna device has a seamless frame effect of full signal shielding material under naked eye vision.

In addition, the present invention also provides a mobile terminal using the antenna device.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

In one aspect, an antenna device is provided, comprising:

A frame, the frame is made of signal shielding material and connected end to end, the frame is provided with at least two micro-slits, and the at least two micro-slits separate the frame into at least two independent frame parts, The at least two frame parts include a first antenna, the micro-slit strip has at least one micro-slit, and the width of the micro-slit is less than or equal to 0.2 mm;

a first matching circuit electrically connected to the first antenna; and

The first radio frequency transceiver circuit is electrically connected to the first matching circuit.

Wherein, the at least two frame portions further include a second antenna, and the antenna device further includes a second matching circuit and a second radio frequency transceiver circuit, and the second matching circuit is electrically connected between the second antenna and the Between the second radio frequency transceiver circuit, the second radio frequency transceiver circuit and the first radio frequency transceiver circuit are used for processing different radio frequency signals.

Wherein, the signal shielding material is metal.

Wherein, the width of the micro-slit is greater than or equal to 0.1 mm.

Wherein, the number of the micro-slits is at least two, and the distance between adjacent micro-slits is greater than or equal to the width of the micro-slits.

Wherein, the ratio of the distance between adjacent micro-slits to the width of the micro-slits is greater than or equal to 1.2.

Wherein, the ratio of the distance between adjacent micro-slits to the width of the micro-slits is greater than or equal to 2.

Wherein, the width of the micro-slit is less than or equal to 0.12mm.

Wherein, the micro-slits are filled with non-signal shielding materials. The non-signal shielding material is plastic or rubber.

Wherein, the micro-slit belt further includes a frame strip formed between adjacent micro-slits, and the material of the frame strip is the same as that of the frame.

Wherein, the antenna device further includes a rear cover, the rear cover is made of signal shielding material and connected to the frame, and the rear cover is grounded to increase the bandwidth of the first antenna.

Wherein, the material of the back cover is the same as that of the frame.

In yet another aspect, a mobile terminal is also provided, including the antenna device described in any one of the above items.

Compared with the prior art, the present invention has the following beneficial effects:

In the embodiment of the present invention, the antenna device uses at least two micro-slits to separate the frame made of signal shielding material into at least two independent frame parts, and one of the frame parts is set as the first antenna , used to realize the antenna function of the antenna device, thus avoiding the problem that the frame interferes with the antenna signal. At the same time, because the micro-slit belt is formed by at least one micro-slit, and the width of the micro-slit is less than or equal to 0.2mm, and the gap less than or equal to 0.2mm is invisible to the naked eye, so the micro-slit belt can ensure the isolation effect while also making the application The mobile terminal of the antenna device has a seamless frame effect of full signal shielding material under naked eye vision. Further, when the signal shielding material is made of metal, the mobile terminal to which the antenna device is applied has a more textured appearance.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings used in the implementation will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. As far as technical personnel are concerned, other drawings can also be obtained like these drawings without paying creative work.

FIG. 1 is a schematic structural diagram of an antenna device provided by an embodiment of the present invention.

FIG. 2 is an enlarged view of the structure at A in FIG. 1 .

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to FIG. 1 and FIG. 2 together. An embodiment of the present invention provides an antenna device 1 including a frame 11 , a first matching circuit 121 and a first radio frequency transceiver circuit 131 . Wherein, the frame 11 is made of signal shielding material and connected end to end, the frame 11 is provided with at least two micro-slits 14, and at least two micro-slits 14 separate the frame 11 into at least two independent frame parts, at least two The frame portion includes the first antenna 111 , that is, one of the frame portions is the first antenna 111 . The micro-slit belt 14 has at least one micro-slit 140, and the width T1 of the micro-slit 140 is less than or equal to 0.2 mm. The first matching circuit 121 is electrically connected to the first antenna 111 , and the first radio frequency transceiver circuit 131 is electrically connected to the first matching circuit 121 .

In this embodiment, since the antenna device uses at least two micro-slit strips 14 to separate the frame 11 made of signal shielding material into at least two independent frame parts, and one of the frame parts is set as the first The antenna 111 is used to realize the antenna function of the antenna device, thus avoiding the problem that the frame 11 interferes with the antenna signal. At the same time, since the micro-slit belt 14 is formed by at least one micro-slit 140, and the width T1 of the micro-slit 140 is less than or equal to 0.2 mm, the slit less than or equal to 0.2 mm is invisible to the naked eye, so the micro-slit belt 14 can guarantee the isolation effect. At the same time, the mobile terminal to which the antenna device is applied has a seamless frame effect of full signal shielding material under naked eye vision. What's more, when the signal shielding material is made of metal, the mobile terminal using the antenna device has a more textured appearance.

It should be understood that the first radio frequency transceiving circuit 131 in this embodiment is used to transmit and receive radio frequency signals, and is also called a radio frequency chip. The first matching circuit 121 is used to adjust the impedance matching of the first antenna 111 so that the first antenna 111 can better receive radio frequency signals.

As a preferred embodiment, when the number of micro-slits 140 is one, that is, when the micro-slit belt 14 is provided with only one micro-slit 140, the width T1 of the micro-slit 140 satisfies: 0.1mm≤T1≤0.2mm, in order to ensure that the micro-slit The seam belt 14 can successfully separate the frame 11 into at least two independent frame parts, and the distance between the two frame parts is at least 0.1 mm, so as to ensure the isolation effect.

Please refer to Fig. 2, as another kind of preferred embodiment, when the quantity of micro-slit 140 is at least two, that is, when micro-slit belt 14 comprises at least two micro-slits 140, the distance between adjacent micro-slits 140 is T2, the micro-slit strip 14 satisfies: T2≥T1, so that the ratio of the area of the slit in the micro-slit strip 14 is less than 50%, further guaranteeing that the mobile terminal using the antenna device has no shielding material for all signals under naked eye vision border effect.

Further, the ratio of the distance T2 between adjacent micro-slits 140 to the width T1 of the micro-slits 140 is greater than or equal to 1.2. More preferably, T2/T1≥2.

Optionally, the micro-slit belt 14 includes four micro-slits 140. At this time, the width T1 of the micro-slits 140 satisfies: T1≤0.12mm, so that the effect of the micro-slits 140 being invisible to the naked eye is better. Further, T1 is preferably 0.04mm-0.08mm, and optimally, T1=0.06mm.

Further, the micro-slit 140 is filled with a non-signal shielding material, such as plastic or rubber, and the appearance color of the non-signal shielding material is the same as the appearance color of the frame 11, so that the mobile terminal using the antenna device has a more A holistic look.

Further, the micro-slit belt 14 also includes frame strips 141 formed between adjacent micro-slits 140 , and the material of the frame strips 141 is the same as that of the frame 11 . In this embodiment, the micro-slit strip 14 may be an integral structure including both the micro-slit 140 and the frame bar 141 , and the micro-slit strip 14 may be embedded in the frame 11 in a mosaic manner to realize isolation in the antenna device. At this time, the material of the frame bar 141 may also be different from that of the frame 11 , as long as the frame bar 141 has the same outer surface as the frame 11 in appearance. Of course, in other embodiments, the frame 11 can also be cut by laser and penetrate the frame 11 to form the micro-slit 140. At this time, the frame bar 141 is a part of the frame 11 that has not been laser-cut, and the micro-slit 140 and the frame bar 141 share A micro-slit belt 14 is formed. A plurality of micro-slits 140 may be arranged at intervals or crossed.

Further, the antenna device further includes a rear cover (not shown), the rear cover is made of signal shielding material and connected to the frame 11 , and the rear cover is grounded to increase the bandwidth of the first antenna 111 . Preferably, the material of the back cover is the same as that of the frame, so that the electrical connection between the two is the best.

Please refer to FIG. 1, as an optional embodiment, at least two frame parts of the antenna device further include a second antenna 112, that is, the other frame part is the second antenna 112, and the antenna device further includes The second matching circuit 122 and the second radio frequency transceiver circuit 132, the second matching circuit 122 is electrically connected between the second antenna 112 and the second radio frequency transceiver circuit 132, the second radio frequency transceiver circuit 132 and the first radio frequency transceiver circuit 131 are used for processing different RF signals.

For example, the first radio frequency transceiver circuit 131 can be used to process functional signals such as GPS signals, bluetooth signals or WiFi signals, and the second radio frequency transceiver circuit 132 can also be used to process functional signals such as GPS signals, bluetooth signals or WiFi signals. The first radio frequency transceiving circuit 131 and the second radio frequency transceiving circuit 132 can process radio frequency signals of the same signal type but different signal frequency bands, or radio frequency signals of different signal types.

In this embodiment, the mobile terminal using the antenna device can have multiple functional antennas at the same time, and the multiple functional antennas are integrated on the same frame 11, which is beneficial to the multifunctional and miniaturized design of the mobile terminal.

Please refer to Fig. 1, preferably, four micro-slits 14 may be arranged at intervals on the frame 11 of the antenna device, and the four micro-slits 14 separate the frame 11 into four independent frame parts, the four The frame portions form the first antenna 111 , the second antenna 112 , the third antenna 113 , and the fourth antenna 114 , respectively. The antenna device also includes a first matching circuit 121, a second matching circuit 122, a third matching circuit 123, a fourth matching circuit 124, and a first radio frequency transceiver circuit 131 and a second radio frequency transceiver circuit 132 for processing different radio frequency signals. , the third radio frequency transceiver circuit 133 and the fourth radio frequency transceiver circuit 134. The first matching circuit 121 is electrically connected between the first antenna 111 and the first radio frequency transceiver circuit 131, the second matching circuit 122 is electrically connected between the second antenna 112 and the second radio frequency transceiver circuit 132, and the third matching circuit 123 is electrically connected between the third antenna 113 and the third radio frequency transceiver circuit 133 , and the fourth matching circuit 124 is electrically connected between the fourth antenna 114 and the fourth radio frequency transceiver circuit 134 . In this embodiment, the antenna device can process four different radio frequency signals at the same time, which is beneficial to the multifunctional and miniaturized design of the mobile terminal to which the antenna device is applied. Of course, in other embodiments, the number of the micro-slits 14 can be set according to actual needs.

An embodiment of the present invention also provides a mobile terminal, including the above-mentioned antenna device. The mobile terminal includes a terminal body, and the peripheral surface of the terminal body covers the frame of the antenna device, so that the mobile terminal has a seamless frame effect of full signal shielding material under naked eye vision. Preferably, the signal shielding material is metal, so that the mobile terminal has a better texture. The mobile terminal refers to computer equipment that can be used on the move, including but not limited to mobile phones, notebooks, tablet computers, POS machines, vehicle-mounted computers, cameras, etc.

In this embodiment, the terminal body further includes a circuit board, and the first matching circuit and the first radio frequency transceiver circuit of the antenna device are integrated on the circuit board. Moreover, when the antenna device is provided with a rear cover made of signal shielding material, the rear cover covers the back of the terminal body and is connected to the frame, and the rear cover is electrically connected to the ground of the circuit board. , to increase the bandwidth of the first antenna.

The embodiments of the present invention have been described in detail above, and specific examples have been used in this paper to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only used to help understand the method and core idea of the present invention; at the same time, for Those skilled in the art will have changes in the specific implementation and scope of application according to the idea of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims (13)

1. An antenna device, characterized in that, comprising: A frame, the frame is made of signal shielding material and connected end to end, the frame is provided with at least two micro-slits, and the at least two micro-slits separate the frame into at least two independent frame parts, The at least two frame parts include a first antenna, the micro-slit strip has at least one micro-slit, and the width of the micro-slit is less than or equal to 0.2mm; a first matching circuit electrically connected to the first antenna; and The first radio frequency transceiver circuit is electrically connected to the first matching circuit. 2. The antenna device according to claim 1, wherein the at least two frame portions further comprise a second antenna, the antenna device further comprises a second matching circuit and a second radio frequency transceiver circuit, the second The matching circuit is electrically connected between the second antenna and the second radio frequency transceiver circuit, and the second radio frequency transceiver circuit and the first radio frequency transceiver circuit are used for processing different radio frequency signals. 3. The antenna device according to claim 1 or 2, wherein the signal shielding material is metal. 4. The antenna device according to claim 1, wherein the width of the micro-slit is greater than or equal to 0.1 mm. 5 . The antenna device according to claim 1 , wherein there are at least two micro-slits, and the distance between adjacent micro-slits is greater than or equal to the width of the micro-slits. 6 . The antenna device according to claim 5 , wherein a ratio of a distance between adjacent microslits to a width of the microslits is greater than or equal to 1.2. 7 . The antenna device according to claim 6 , wherein a ratio of a distance between adjacent microslits to a width of the microslits is greater than or equal to 2. 8 . 8. The antenna device according to any one of claims 5-7, wherein the width of the micro-slit is less than or equal to 0.12 mm. 9. The antenna device according to any one of claims 4-7, characterized in that, the micro-slits are filled with non-signal shielding materials. 10. The antenna device according to claim 5, wherein the micro-slit strip further comprises a frame strip formed between adjacent micro-slits, and the material of the frame strip is the same as the material of the frame. same. 11. The antenna device according to claim 1, further comprising a rear cover, the rear cover is made of signal shielding material and connected to the frame, and the rear cover is grounded to increase The bandwidth of the first antenna. 12. The antenna device according to claim 11, wherein the material of the rear cover is the same as that of the frame. 13. A mobile terminal, comprising the antenna device according to any one of claims 1-12.