CN110600881A - Antenna device and mobile terminal - Google Patents
Antenna device and mobile terminal Download PDFInfo
- Publication number
- CN110600881A CN110600881A CN201910913364.1A CN201910913364A CN110600881A CN 110600881 A CN110600881 A CN 110600881A CN 201910913364 A CN201910913364 A CN 201910913364A CN 110600881 A CN110600881 A CN 110600881A
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- Prior art keywords
- antenna
- point
- filter module
- antenna device
- inductor
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
- H01Q5/364—Creating multiple current paths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
The invention discloses an antenna device and a mobile terminal, wherein the antenna device comprises a metal antenna body, an isolation part is arranged on the metal antenna body, an antenna body unit area is respectively arranged at two sides of the isolation part, an antenna seam is arranged on the metal antenna body, a first grounding point is arranged at one side of the antenna seam, a near-end grounding point and a far-end grounding point are also arranged at the other side of the antenna seam, the metal antenna body is arranged opposite to a circuit board, a first feeding point is arranged on the circuit board, the first feeding point points to the metal antenna body and is positioned at one side close to the antenna seam, the first feeding point is used for adjusting antenna impedance, and the first grounding point, the first feeding point, the near-end grounding point and the far-end grounding point are all positioned in the antenna body unit area. The antenna device provided by the invention can ensure the radiation environment of the antenna and can meet the radiation requirements of different frequency bands.
Description
Technical Field
The present invention relates to the field of antenna devices, and in particular, to an antenna device and a mobile terminal.
Background
With the gradual popularization and application of the mobile communication technology (5G), the data transmission rate of the mobile terminal is faster and faster, and people have more and more requirements on audio and video, games, high-definition real-time video communication and the like. Under the trend, more and more frequency bands need to be realized by the mobile terminal antenna, resulting in an increase in the number of antennas in the mobile terminal.
Due to the increase of the number of antennas in the mobile terminal, the existing mainstream mobile phones are all metal frame frames, so how to reasonably arrange more and more antennas in the environment of the whole mobile phone is a problem which is more and more difficult to process. The commonly used solutions are: and an antenna in the form of FPC, LDS and the like is added at a position close to the metal frame.
However, as the number of antennas increases, the distance between the antennas decreases, which causes the isolation between the antennas to deteriorate, and it is difficult to ensure a good radiation environment for all the antennas, which causes performance deviation of some antennas.
Disclosure of Invention
Therefore, the invention aims to solve the problem that the multi-frequency common antenna is difficult to be well realized in a compact space in the prior art.
The invention provides an antenna device, which comprises a metal antenna body, wherein an isolation part is arranged on the metal antenna body, an antenna body unit area is respectively arranged at two sides of the isolation part, an antenna seam is arranged on the metal antenna body, a first grounding point is arranged at one side of the antenna seam, a near-end grounding point and a far-end grounding point are further arranged at the other side of the antenna seam, the metal antenna body is arranged opposite to a circuit board, a first feeding point is arranged on the circuit board, the first feeding point points to the metal antenna body and is positioned at one side close to the antenna seam, the first feeding point is used for adjusting antenna impedance, and the first grounding point, the first feeding point, the near-end grounding point and the far-end grounding point are all positioned in the antenna body unit area.
The antenna device comprises a metal antenna body, wherein an isolation part is led out of the metal antenna body, and the isolation between the same or similar frequency bands of two antennas can be improved by setting the width of the isolation part, so that the radiation environment of the antennas is ensured; in addition, the antenna device comprises a first feeding point, a near-end grounding point and a far-end grounding point, and in practical application, the frequency offset can be adjusted by adjusting the positions of the first feeding point, the near-end grounding point and the far-end grounding point; meanwhile, the near-end grounding point of each antenna can be directly grounded, and grounded through a capacitor or an inductor, or grounded through a filter network formed by the capacitor and the inductor, and the like, so that different frequency band requirements are realized. The antenna device provided by the invention can better realize a multi-frequency common antenna in a compact space and meet the radiation requirements of different frequency bands.
The antenna device is characterized in that the near-end grounding point is positioned on one side close to the antenna seam, the far-end grounding point is positioned on one side close to the isolation part, and the isolation part is provided with a grounding point of the isolation part.
The antenna device is characterized in that the width of the antenna seam is 0.5-2 mm, and the width of the isolation part is at least 3 mm.
The antenna device, wherein, be equipped with an LC filtering module between near-end earth point and the metal antenna body, LC filtering module adopts any one form in following:
comprises a capacitor;
comprises an inductor;
the device comprises a capacitor and an inductor which are connected in parallel;
including a capacitor and an inductor connected in series.
The antenna device, wherein, LC filter module includes mutual parallel first inductance and first electric capacity, first inductance and first electric capacity all set up with the second inductance series connection.
The antenna device, wherein, LC filter module includes mutual parallelly connected third inductance and second electric capacity, third inductance and the second electric capacity all with third electric capacity series arrangement.
The antenna device, wherein the LC filter module includes a fourth inductor and a fourth capacitor connected in parallel.
The antenna device comprises a metal antenna body, a near-end grounding point, an antenna switch assembly and a first LC filtering module, wherein the antenna switch assembly is arranged between the near-end grounding point and the metal antenna body and comprises a selector switch, and the first LC filtering module and the second LC filtering module are connected with the selector switch and are both connected with a first grounding point.
The antenna device is characterized in that a seam crossing point and a seam crossing loading piece are arranged on the metal antenna body, the seam crossing loading piece and the first feeding point are respectively arranged on two sides of the antenna seam, the seam crossing loading piece at least comprises an LC filtering module, and the LC filtering module is grounded.
The invention also provides a mobile terminal, wherein an antenna device is arranged on the mobile terminal, and the antenna device is the antenna device.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of an overall structure of an antenna device according to a first embodiment of the present invention;
fig. 2 is an enlarged view of the antenna structure shown in the "V" portion of the antenna device shown in fig. 1;
fig. 3 is a schematic current path diagram of an antenna device in practical application according to a first embodiment of the present invention;
FIG. 4 is an enlarged view of the structure of the portion "M" in FIG. 3;
fig. 5 is a schematic overall structure diagram of an antenna device according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of an LC filter module in the antenna device shown in fig. 5;
fig. 7 is a schematic structural diagram of an LC filter module in the antenna device shown in fig. 5;
fig. 8 is a schematic structural diagram of an LC filter module in the antenna device shown in fig. 5;
fig. 9 is a schematic view of an overall structure of an antenna device according to a third embodiment of the present invention;
fig. 10 is an enlarged view of the structure of an antenna switch assembly in the antenna device shown in fig. 9;
fig. 11 is a schematic overall structure diagram of an antenna device according to a fourth embodiment of the present invention;
fig. 12 is a schematic view of an overall structure of an antenna device according to a fifth embodiment of the present invention.
Description of the main symbols:
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The number of the antennas is increased, the distance between the antennas is reduced, so that the isolation between the antennas is deteriorated, the multi-frequency common antenna is difficult to be well realized in a compact space, and all the antennas are ensured to have a good radiation environment.
The first embodiment is as follows:
referring to fig. 1 to 4, the antenna device according to the first embodiment of the present invention includes a metal antenna 11, wherein a spacer 111 is disposed on the metal antenna 11, and an antenna unit area (within a dashed line frame shown in fig. 2) is disposed on each of two sides of the spacer 111. It should be added that the metal antenna body 11 may be in the form of a metal frame, LDS, FPC, or the like.
An antenna slot 110 is formed in the metal antenna body 11, a first grounding point 1101 is provided on one side of the antenna slot 110, and a proximal grounding point 112 and a distal grounding point 113 are further provided on the other side of the antenna slot 110. As can be seen from fig. 2, the metal antenna body 11 is disposed opposite to a circuit board 21, and a first feeding point 211 is disposed on the circuit board 21, wherein the first feeding point 211 is directed to the metal antenna body 11 and located at a side close to the antenna slot 110. The first feeding point 211 is close to the antenna slot 110, and can feed and receive radio frequency signals.
As can be seen from fig. 2, the first grounding point 1101, the first feeding point 211, the near-end grounding point 112 and the far-end grounding point 113 are all located in the antenna body unit area. Specifically, the near-end ground point 112 is located on a side close to the antenna slot 110, the far-end ground point 113 is located on a side close to the isolation portion 111, and the isolation portion 111 is provided with an isolation portion ground point 1111.
The width of the antenna seam 110 is 0.5mm to 2mm in the antenna seam 110. For the isolation part 111, the width of the isolation part 111 is at least 3mm, and the width of the isolation part 111 can be adjusted to adjust the isolation between the same or similar frequency bands of the two antennas.
It should be added here that, at a position adjacent to the first feeding point 211, an antenna matching may be correspondingly provided, and the antenna matching may adjust the antenna impedance (which is composed of a plurality of capacitors and inductors, and a switch, an adjustable capacitor, and the like).
Referring to fig. 4, for the antenna device in the present embodiment, the current path in the actual operation generally includes three, specifically: the path I is the main path of the lowest frequency current, the path II is the main path of the middle frequency band current, and the path III is the main path of the highest frequency current. In practical applications, the lengths of the three current paths can be changed by adjusting the positions of the first feeding point 211, the near-end grounding point 112, and the far-end grounding point 113, so as to adjust the frequency offset. For example, n41 or WIFI 2.4G is implemented through path (r); pass path 2 implements n 78; and realizing n79 or WIFI 5G through the path (c).
The antenna device comprises a metal antenna body, wherein an isolation part is led out of the metal antenna body, and the isolation between the same or similar frequency bands of two antennas can be improved by setting the width of the isolation part, so that the radiation environment of the antennas is ensured; in addition, the antenna device comprises a first feeding point, a near-end grounding point and a far-end grounding point, and in practical application, the frequency offset can be adjusted by adjusting the positions of the first feeding point, the near-end grounding point and the far-end grounding point; meanwhile, the near-end grounding point of each antenna can be directly grounded, and grounded through a capacitor or an inductor, or grounded through a filter network formed by the capacitor and the inductor, and the like, so that different frequency band requirements are realized. The antenna device provided by the invention can ensure the radiation environment of the antenna and can meet the radiation requirements of different frequency bands.
Example two:
referring to fig. 5 to 8, the second embodiment of the antenna device of the present invention is substantially the same as the first embodiment, except that an LC filter module 31 is disposed between the near-end grounding point 112 and the metal antenna body 11.
There are many different combinations possible for the LC filter module 31. Specifically, as shown in fig. 6, as an embodiment, the LC filter module 31 includes a first inductor L1 and a first capacitor C1 connected in parallel, and both the first inductor L1 and the first capacitor C1 are connected in series with a second inductor L2.
In another embodiment, as shown in fig. 7, the LC filter module 31 includes a third inductor L3 and a second capacitor C2 connected in parallel, and the third inductor L3 and the second capacitor C2 are both connected in series with the third capacitor C3.
In another embodiment, as shown in fig. 8, the LC filter module 31 includes a fourth inductor L4 and a fourth capacitor C4 connected in parallel. It should be added here that the LC filter module 31 may be a single capacitor or a single inductor.
It should be noted that, in this embodiment, by disposing the LC filter module 31 between the near-end grounding point 112 and the metal antenna body 11, the LC filter module 31 is loaded through the LC network and then grounded, so that flexible frequency adjustment can be achieved by using the LC network.
Example three:
referring to fig. 9 and 10, the antenna device according to the third embodiment of the present invention is substantially the same as that of the first embodiment, except that an antenna switch element 41 is disposed between the near-end grounding point 112 and the metal antenna body 11.
Referring to fig. 10, the antenna switch assembly 41 includes a switch 410, a first LC filter module 411 and a second LC filter module 412 connected to the switch 410, wherein the first LC filter module 411 and the second LC filter module 412 are both connected to a first ground point 1101. It should be added that the specific structure of the first LC filter module 411 and the second LC filter module 412 may be one of the structures described in the second embodiment with respect to the LC filter module 31.
In this embodiment, it can be understood that, by the above-mentioned switch 410, free switching between the above-mentioned first LC filtering module 411 and the second LC filtering module 412 can be realized, so as to realize switching of the antenna frequency band. In addition, in the practical embodiment, the switching is not limited to the switching between two filtering modules, and the switching may be performed between a plurality of filtering modules.
Example four:
referring to fig. 11, the antenna device according to the fourth embodiment of the present invention is substantially the same as that of the first embodiment, except that a bridging point 1102 is led out from the metal antenna body 11, wherein the distance from the bridging point 1102 to the antenna slot 110 is greater than the distance from the first grounding point 1101 to the antenna slot 110 in the first embodiment.
In practical applications, by adjusting the position of the bridging point 1102, the matching of the first feeding point 211 and the grounding pattern of the near-end grounding point 112, more current paths can be generated to realize more frequency bands, such as the path (r) in fig. 11.
Example five:
referring to fig. 12, the antenna device according to the fifth embodiment of the present invention is substantially the same as that in the first embodiment, except that a seam crossing point 1102 and a seam crossing loading element 51 are disposed on the metal antenna body 11, the seam crossing loading element 51 and the first feeding point 211 are disposed on two sides of the antenna seam 110, respectively, and the seam crossing loading element 51 includes an LC filter module, and the LC filter module is grounded.
In this embodiment, by adding the gap-crossing loading member 51, the LC filter module can be loaded to the ground, or different LC filter modules can be switched by the antenna switch to be loaded to the ground, so as to implement more frequency band characteristics and frequency modulation modes.
The invention also provides a mobile terminal, wherein an antenna device is arranged on the mobile terminal, and the antenna device is the antenna device.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer 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.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An antenna device is characterized by comprising a metal antenna body, wherein an isolation part is arranged on the metal antenna body, an antenna body unit area is respectively arranged on two sides of the isolation part, an antenna seam is formed in the metal antenna body, a first grounding point is arranged on one side of the antenna seam, a near-end grounding point and a far-end grounding point are further arranged on the other side of the antenna seam, the metal antenna body and a circuit board are oppositely arranged, a first feeding point is arranged on the circuit board, the first feeding point points to the metal antenna body and is positioned on one side close to the antenna seam, the first feeding point is used for adjusting antenna impedance, and the first grounding point, the first feeding point, the near-end grounding point and the far-end grounding point are all positioned in the antenna body unit area.
2. The antenna assembly of claim 1 wherein said proximal ground point is located adjacent said antenna seam and said distal ground point is located adjacent said isolator portion, an isolator ground point being provided on said isolator portion.
3. The antenna device according to claim 2, wherein the width of the antenna seam is 0.5mm to 2mm, and the width of the spacer is at least 3 mm.
4. The antenna device according to claim 1, wherein an LC filter module is disposed between the proximal ground point and the metal antenna body, the LC filter module being in the form of any one of:
comprises a capacitor;
comprises an inductor;
the device comprises a capacitor and an inductor which are connected in parallel;
including a capacitor and an inductor connected in series.
5. The antenna device according to claim 4, wherein the LC filter module comprises a first inductor and a first capacitor connected in parallel, and the first inductor and the first capacitor are both connected in series with a second inductor.
6. The antenna device according to claim 4, wherein the LC filter module comprises a third inductor and a second capacitor connected in parallel, and the third inductor and the second capacitor are both connected in series with the third capacitor.
7. The antenna device according to claim 4, wherein the LC filter module comprises a fourth inductor and a fourth capacitor connected in parallel with each other.
8. The antenna device according to claim 1, wherein an antenna switch assembly is disposed between the proximal ground point and the metal antenna body, the antenna switch assembly includes a switch, and a first LC filter module and a second LC filter module connected to the switch, and the first LC filter module and the second LC filter module are both connected to a first ground point.
9. The antenna device according to claim 1, wherein a cross-slot connecting point and a cross-slot loading element are disposed on the metal antenna body, the cross-slot loading element and the first feeding point are disposed on two sides of the antenna slot, respectively, the cross-slot loading element at least includes an LC filter module, and the LC filter module is grounded.
10. A mobile terminal provided with an antenna device, characterized in that the antenna device is an antenna device according to any of the preceding claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910913364.1A CN110600881A (en) | 2019-09-25 | 2019-09-25 | Antenna device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910913364.1A CN110600881A (en) | 2019-09-25 | 2019-09-25 | Antenna device and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110600881A true CN110600881A (en) | 2019-12-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910913364.1A Pending CN110600881A (en) | 2019-09-25 | 2019-09-25 | Antenna device and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110600881A (en) |
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| CN112542679A (en) * | 2020-12-18 | 2021-03-23 | 维沃移动通信有限公司 | Electronic device |
| CN112821035A (en) * | 2020-12-31 | 2021-05-18 | 维沃移动通信有限公司 | Electronic device |
| CN112909509A (en) * | 2021-01-20 | 2021-06-04 | 维沃移动通信有限公司 | Antenna and electronic device |
| CN115036674A (en) * | 2021-03-03 | 2022-09-09 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
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| CN115036674A (en) * | 2021-03-03 | 2022-09-09 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |
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| RJ01 | Rejection of invention patent application after publication |