CN107834162B

CN107834162B - Antenna device and mobile terminal

Info

Publication number: CN107834162B
Application number: CN201710976109.2A
Authority: CN
Inventors: 胡莎莎; 梁天平; 顾亮
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2021-08-24
Anticipated expiration: 2036-03-18
Also published as: CN105655689B; CN105655689A; CN107834162A

Abstract

The invention discloses an antenna device, comprising: a frame, the frame is made of a signal shielding material and connected end to end, the frame is provided with at least two micro-slit strips, the at least two micro-slit strips connect the frame At least two frame parts are separated from each other, 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; the first matching circuit, electrically connected to the first antenna; and a first radio frequency transceiver circuit electrically connected to the first matching circuit. The mobile terminal applying the antenna device of the present invention has a seamless frame effect of full signal shielding material under the naked eye. The invention also discloses a mobile terminal.

Description

Antenna device and mobile terminal

Technical Field

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

Background

With the development of science and technology and the increasing requirements of users on the signal and appearance quality of electronic products, most of the electronic products with antennas, such as mobile phones, on the market at present, use metal as an appearance shell (including a side surface, a back cover and the like) so as to ensure the use strength and meet the appearance of texture. As is well known, metal is a signal shielding material, and in order to prevent the signal shielding of the metal shell from affecting the efficiency of the antenna, the shell is usually designed to be combined with nonmetal by metal, so that the antenna structure is located in a nonmetal area; or the isolation area made of non-metal materials is arranged at the end part of the metal shell, and the part of the metal shell close to the antenna is completely separated from other parts of the metal shell, so that the antenna area is isolated from other areas of the metal shell. However, the above design also results in that the electronic product cannot adopt the design of the seamless frame made of the full signal shielding material, which affects the overall sense and aesthetic appearance of the electronic product.

Disclosure of Invention

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

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

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in one aspect, an antenna apparatus is provided, including:

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 antenna device further comprises a second matching circuit and a second radio frequency transceiver circuit, the second 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.

Wherein the signal shielding material is metal.

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

The number of the micro-slits is at least two, and the distance between every two adjacent micro-slits is larger 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 0.12 mm.

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

The micro-slit belt further comprises frame strips formed between the adjacent micro-slits, and the frame strips are made of the same material as the frame.

The antenna device further comprises a rear cover, the rear cover is made of a signal shielding material and connected with the frame, and the rear cover is grounded and used for increasing the bandwidth of the first antenna.

The rear cover is made of the same material as the frame.

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

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

in the embodiment of the invention, the frame made of the signal shielding material is divided into at least two frame parts which are mutually independent by at least two micro-slit tapes, and one of the frame parts is set as the first antenna to realize the antenna function of the antenna device, so that the problem that the interference influence of the frame on the antenna signal is avoided. Meanwhile, the micro-seam tape is formed by at least one micro-seam, the width of the micro-seam is less than or equal to 0.2mm, and the gap less than or equal to 0.2mm is a gap invisible to naked eyes, so that the micro-seam tape ensures the isolation effect and simultaneously enables the mobile terminal applying the antenna device to have the seamless frame effect of the full-signal shielding material under the visual sense of naked eyes. Further, when the signal shielding material is made of metal, the mobile terminal using the antenna device has a more textured appearance.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of an antenna device according to an embodiment of the present invention.

Fig. 2 is an enlarged view of the structure at a in fig. 1.

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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and fig. 2 together, an embodiment of an antenna apparatus 1 includes a frame 11, a first matching circuit 121, and a first rf transceiver circuit 131. The frame 11 is made of a signal shielding material and is connected end to end, the frame 11 is provided with at least two micro-slit bands 14, the frame 11 is divided into at least two mutually independent frame portions by the at least two micro-slit bands 14, the at least two frame portions comprise first antennas 111, and one frame portion is the first antenna 111. The micro-slit tape 14 has at least one micro-slit 140, and the width T1 of the micro-slit 140 is 0.2mm or less. The first matching circuit 121 is electrically connected to the first antenna 111, and the first rf transceiver circuit 131 is electrically connected to the first matching circuit 121.

In this embodiment, since the antenna device divides the frame 11 made of the signal shielding material into at least two frame portions independent of each other by using at least two slit tapes 14, and one of the frame portions is set as the first antenna 111 to implement the antenna function of the antenna device, the problem that the frame 11 interferes with the antenna signal can be avoided. Meanwhile, since the micro-slit strip 14 is formed by at least one micro-slit 140, the width T1 of the micro-slit 140 is less than or equal to 0.2mm, and the gap less than or equal to 0.2mm is a gap invisible to naked eyes, the micro-slit strip 14 ensures the isolation effect, and at the same time, the mobile terminal applying the antenna device has the seamless frame effect of the full-signal shielding material under the visual eyes. Furthermore, when the signal shielding material is made of metal, the mobile terminal using the antenna device has a more tactile appearance.

It should be understood that the first rf transceiver circuit 131 is used for transceiving an rf signal, and is also called an rf 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 the radio frequency signal.

As a preferred embodiment, when the number of micro-slits 140 is one, that is, when the micro-slit tape 14 is provided with only one micro-slit 140, the width T1 of the micro-slit 140 satisfies: t1 is more than or equal to 0.1mm and less than or equal to 0.2mm, so that the micro-seam tape 14 can smoothly divide the frame 11 into at least two mutually independent frame parts, and the distance of at least 0.1mm is reserved between the two frame parts, thereby ensuring the isolation effect.

Referring to fig. 2, as another preferred embodiment, when the number of the micro-slits 140 is at least two, that is, when the micro-slit tape 14 includes at least two micro-slits 140, the distance between the adjacent micro-slits 140 is T2, the micro-slit tape 14 satisfies: t2 is more than or equal to T1, so that the proportion of the area of the gap in the micro-slit tape 14 is less than 50%, and the seamless frame effect of the full-signal shielding material is further ensured when the mobile terminal applying the antenna device is in naked eye vision.

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

Optionally, the micro-slit tape 14 includes four micro-slits 140, where the width T1 of the micro-slits 140 satisfies: t1 is less than or equal to 0.12mm, so that the effect that the micro-slits 140 cannot be seen by naked eyes is better. Further, T1 is preferably 0.04mm to 0.08mm, and most preferably, T1 is 0.06 mm.

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

Further, the micro-slit tape 14 further includes frame strips 141 formed between the 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 tape 14 may be an integral structure including both the micro-slits 140 and the frame strips 141, and the micro-slit tape 14 may be embedded in the frame 11 in an embedding manner to achieve an isolation function in the antenna device. In this case, the material of the frame strip 141 may be different from that of the frame 11, and the frame strip 141 only has to have the same outer surface as the frame 11 in appearance. Of course, in other embodiments, the frame 11 may be laser-cut and penetrate through the frame 11 to form the micro-slit 140, in which case the frame strip 141 is a part of the frame 11 that is not laser-cut, and the micro-slit 140 and the frame strip 141 together form the micro-slit tape 14. The plurality of micro-slits 140 may be arranged in a spaced-apart arrangement or may be arranged to intersect.

Further, the antenna device further includes a rear cover (not shown) made of a 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 rear cover is the same as that of the frame, so that the electrical connection effect between the rear cover and the frame is optimal.

Referring to fig. 1, as an alternative embodiment, at least two frame portions of the antenna apparatus further include a second antenna 112, that is, another frame portion of the antenna apparatus is the second antenna 112, the antenna apparatus further includes a second matching circuit 122 and a second rf transceiver circuit 132, the second matching circuit 122 is electrically connected between the second antenna 112 and the second rf transceiver circuit 132, and the second rf transceiver circuit 132 and the first rf transceiver circuit 131 are configured to process different rf signals.

For example, the first rf transceiver circuit 131 may be configured to process functional signals such as GPS signals, bluetooth signals, or WiFi signals, and the second rf transceiver circuit 132 may also be configured to process functional signals such as GPS signals, bluetooth signals, or WiFi signals. The first rf transceiver circuit 131 and the second rf transceiver circuit 132 can process rf signals with the same signal type and different signal frequency bands, or rf signals with different signal types.

In this embodiment, a mobile terminal applying the antenna apparatus may 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 multi-functionalization and miniaturization design of the mobile terminal.

Referring to fig. 1, preferably, four slit tapes 14 may be disposed at intervals on the frame 11 of the antenna device, the four slit tapes 14 divide the frame 11 into four independent frame portions, and the four frame portions respectively form a first antenna 111, a second antenna 112, a third antenna 113, and a fourth antenna 114. The antenna device further comprises a first matching circuit 121, a second matching circuit 122, a third matching circuit 123, a fourth matching circuit 124, and a first rf transceiver circuit 131, a second rf transceiver circuit 132, a third rf transceiver circuit 133, and a fourth rf transceiver circuit 134 for processing different rf signals. The first matching circuit 121 is electrically connected between the first antenna 111 and the first rf transceiver circuit 131, the second matching circuit 122 is electrically connected between the second antenna 112 and the second rf transceiver circuit 132, the third matching circuit 123 is electrically connected between the third antenna 113 and the third rf transceiver circuit 133, and the fourth matching circuit 124 is electrically connected between the fourth antenna 114 and the fourth rf transceiver circuit 134. In this embodiment, the antenna device can process four different radio frequency signals simultaneously, which is beneficial to the multifunctional and miniaturized design of the mobile terminal applying the antenna device. Of course, in other embodiments, the number of the micro-slit tapes 14 can be set according to actual requirements.

The embodiment of the invention also provides a mobile terminal which comprises the antenna device. The mobile terminal comprises a terminal main body, wherein the peripheral side surface of the terminal main body covers the frame of the antenna device, so that the mobile terminal has a seamless frame effect of a full-signal shielding material under the visual sense of naked eyes. Preferably, the signal shielding material is metal, so that the mobile terminal has better texture. The mobile terminal refers to a computer device that can be used in mobile, including but not limited to a mobile phone, a notebook, a tablet computer, a POS machine, a vehicle-mounted computer, a camera, etc.

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

The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An antenna device, characterized in that, comprising:

a frame, the frame is made of a signal shielding material and connected end to end, the frame is provided with at least two micro-slit strips, and the at least two micro-slit strips separate the frame into at least two frame parts that are independent of each other, 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; the micro-slit tape also includes a frame strip formed between the adjacent micro-slots, and the material of the frame strip is the same as that of the frame. The material is the same, the micro-slit tape is an integrated structure including the frame strip and the micro-slit at the same time, the micro-slit tape is embedded in the frame, the micro-slit is filled with non-signal shielding material, the non-signal The appearance color of the shielding material is the same as the appearance color of the frame;

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

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

2. The antenna device according to claim 1, wherein the at least two frame parts 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-slot is greater than or equal to 0.1 mm.

5 . The antenna device according to claim 1 , wherein the width of the micro slit is less than or equal to 0.12 mm. 6 .

6 . The antenna device of claim 1 , wherein the material of the back cover is the same as the material of the frame. 7 .

7. A mobile terminal, comprising the antenna device according to any one of claims 1-6.