CN218385731U - Antenna device and terminal - Google Patents
Antenna device and terminal Download PDFInfo
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- CN218385731U CN218385731U CN202222105415.8U CN202222105415U CN218385731U CN 218385731 U CN218385731 U CN 218385731U CN 202222105415 U CN202222105415 U CN 202222105415U CN 218385731 U CN218385731 U CN 218385731U
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Abstract
The application discloses antenna device and terminal, this antenna device includes: the antenna comprises a first radiator, a second radiator and a third radiator, wherein one end of the first radiator comprises a first grounding point and a feeding point; and one end of the second radiator is spaced and overlapped with the other end of the first radiator, and the other end of the second radiator comprises a second grounding point. By the method, technical support can be provided for effectively reducing the SAR value of the high-frequency antenna device.
Description
Technical Field
The application relates to the technical field of antennas, in particular to an antenna device and a terminal.
Background
At present, high frequency antenna devices of conventional mobile phones, for example: in The Frequency Division Duplex-Long Term Evolution (FDD-LTE) B7 band, after The Total Radiated Power (TRP) in The Over The Air technology test (OTA) of these high Frequency antenna apparatuses exceeds 17dB, the Specific Absorption Rate (SAR) value is easily exceeded when The FCC (Federal Communications Commission) certification test is performed.
SUMMERY OF THE UTILITY MODEL
Based on this, the embodiments of the present application provide an antenna device and a terminal, which can provide technical support for effectively reducing the SAR value of a high-frequency antenna device.
In a first aspect, the present application provides an antenna arrangement comprising:
the antenna comprises a first radiating body, a second radiating body and a radiating element, wherein one end of the first radiating body comprises a first grounding point and a feeding point;
and one end of the second radiator is spaced and overlapped with the other end of the first radiator, and the other end of the second radiator comprises a second grounding point.
In a second aspect, the present application provides a terminal comprising an antenna arrangement as described above.
The embodiment of the application provides an antenna device and a terminal, wherein the antenna device comprises a first radiating body and a second radiating body, one end of the first radiating body comprises a first grounding point and a feeding point, the other end of the first radiating body is spaced from and overlapped with one end of the second radiating body, and the other end of the second radiating body comprises a second grounding point. After the first radiator feeds power, because one end of the second radiator is spaced and overlapped with the other end of the first radiator, the first radiator can feed power to the second radiator in a coupling mode, so that the current of the first radiator can be reduced, a part of electromagnetic radiation of the first radiator is dispersed, and technical support can be provided for effectively reducing the SAR value of the high-frequency antenna device.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an antenna apparatus of the present application;
fig. 2 is a schematic structural diagram of another embodiment of an antenna apparatus of the present application;
fig. 3 is a schematic structural diagram of an embodiment of the terminal of the present application.
Description of the main elements and symbols:
1. a first radiator; 11. one end of a first radiator; 111. a first ground point; 112. a feed point; 12. the other end of the first radiator; 2. a second radiator; 21. one end of the second radiator; 22. the other end of the second radiator; 221. a second ground point; 100. a terminal; 3. a slot clamping hole; 4. a first ground connection; 5. a feed connection; 6. a second ground connection.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all 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 application.
It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, fig. 1 and 2 are schematic structural diagrams of two embodiments of an antenna device according to the present application, where the antenna device includes: a first radiator 1 and a second radiator 2.
One end 11 of the first radiator 1 includes a first ground point 111 and a feeding point 112; one end 21 of the second radiator 2 is spaced from and overlapped with the other end 12 of the first radiator 1, and the other end 22 of the second radiator 2 includes a second grounding point 221.
In the related art, when only one radiator is provided, since the grounding point and the feeding point of the radiator are located at the same end of the radiator, the grounding point and the feeding point of the radiator are too close to each other, and the electromagnetic radiation at the feeding point is strongest, the radiation per unit area of the antenna device is too high, and the SAR value is most prone to exceed the standard.
The antenna device according to the embodiment of the present application includes a first radiator 1 and a second radiator 2, and although one end 11 of the first radiator 1 includes a first ground point 111 and a feeding point 112, the other end 12 of the first radiator 1 is spaced apart from and overlaps one end 21 of the second radiator 2, and the other end 22 of the second radiator 2 includes a second ground point 221. After the first radiator 1 feeds power, because one end 21 of the second radiator 2 is spaced and overlapped with the other end 12 of the first radiator 1, the first radiator 1 can feed power to the second radiator 2 in a coupling manner, so that the current of the first radiator 1 can be reduced, a part of electromagnetic radiation of the first radiator 1 is dispersed, and technical support can be provided for effectively reducing the SAR value of the high-frequency antenna device.
In one embodiment, among the first grounding point 111 and the feeding point 112 at the one end 11 of the first radiator 1, the feeding point 112 at the one end 11 of the first radiator 1 is far away from the second grounding point 221 at the other end 22 of the second radiator 2, and the first grounding point 111 at the one end 11 of the first radiator 1 is close to the second grounding point 221 at the other end 22 of the second radiator 1.
In the embodiment of the present application, the feeding point 112 of the one end 11 of the first radiator 1 is farther from the second grounding point 221 of the other end 22 of the second radiator 1 than the first grounding point 111 of the one end 11 of the first radiator 1, so that the current of the first radiator 1 can be better reduced and the electromagnetic radiation of the first radiator 1 can be better dispersed.
In an embodiment, a first distance D1 between the one end 21 of the second radiator 2 and the other end 12 of the first radiator 1 is greater than 0mm and less than 2 mm. Generally, the smaller the first distance D1 between the one end 21 of the second radiator 2 and the other end 12 of the first radiator 1 is, the greater the coupling effect between the first radiator 1 and the second radiator 2 is, and the greater the coupling effect is, the better the current of the first radiator 1 can be reduced, and the electromagnetic radiation of the first radiator 1 can be dispersed. Therefore, the first distance D1 separating the one end 21 of the second radiator 2 from the other end 12 of the first radiator 1 cannot be too large, and needs to be less than 2 mm. For example: the first distance may be 0.2 millimeters, 0.5 millimeters, 1 millimeter, 1.5 millimeters, or 1.8 millimeters, among others.
In an embodiment, the shape of the first radiator 1 includes one of an inverted F shape and a zigzag shape. The shapes of inverted F and Z are common shapes of radiators at present. Referring to fig. 2, the first radiator 1 has a zigzag shape. Of course, the shape of the first radiator 1 may also be other shapes, for example, as shown in fig. 1, the shape of the first radiator 1 may be a straight line shape.
In an embodiment, the second distance D2 between the feeding point 112 at the one end 11 of the first radiator 1 and the second grounding point 221 at the other end 22 of the second radiator 2 is adjustable according to the frequency band corresponding to the antenna device.
In an embodiment, the length L1 of the overlapping portion between the one end 21 of the second radiator 2 and the other end 12 of the first radiator 1 is adjustable according to the frequency band corresponding to the antenna device.
In an embodiment, the total width L2 of the first radiator 1 and the second radiator 2 may be adjusted according to a frequency band corresponding to the antenna device.
In an embodiment, when the frequency band corresponding to the antenna device is a fdd-lte B7 frequency band (B7 frequency band, i.e. uplink 2500-2570MHz, downlink 2620-2690 MHz), a second distance D2 between the feeding point 112 at the one end 11 of the first radiator 1 and the second grounding point 221 at the other end 22 of the second radiator 2 is greater than 20 mm; the length L1 of the overlapping portion between one end 21 of the second radiator 2 and the other end 12 of the first radiator 1 is greater than 5 mm; the total width L2 of the first radiator 1 and the second radiator 2 is greater than 6mm.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the terminal of the present application, where the terminal 100 includes the antenna device as described above.
The antenna device of the terminal in the embodiment of the application can be prepared by processes such as a Flexible Printed Circuit (FPC), a Print Direct Structuring (PDS), a Laser Direct Structuring (LDS), and the like.
In one embodiment, the side of the terminal 100 includes a card slot 3, the first radiator 1 is located at the side edge of the terminal 100, the first ground point 111 and the feeding point 112 of one end 11 of the first radiator 1 are far away from the card slot 3, and the other end 12 of the first radiator 1 is close to the card slot.
In the embodiment of the present application, the first radiator 1 is a main radiator for receiving or transmitting signals, and the other end 12 of the first radiator 1 is a main part for receiving or transmitting signals, so in order to avoid signal blocking and to make the other end 12 of the first radiator 1 close to the slot hole, the first grounding point 111 and the feeding point 112 of the one end 11 of the first radiator 1 are far away from the slot hole 3.
In an embodiment, the second radiator 2 is disposed on a side of the first radiator 1 away from the card slot 3. I.e. the first radiator 1 is between the card slot aperture 3 and the second radiator 2.
In the embodiment of the present application, the first radiator 1 is a main radiator for receiving or transmitting signals, and in order to avoid blocking of the signals as much as possible, the second radiator 2 is disposed on a side of the first radiator 1 away from the slot hole 3, that is, the first radiator 1 is disposed between the slot hole 3 and the second radiator 2.
In one embodiment, the terminal 100 further includes a first ground connector 4, a feed connector 5 and a second ground connector 6, wherein one end of the first ground connector 4 is connected to the first ground point 111 at the one end 11 of the first radiator 1, and the other end is connected to a first ground signal point (not shown); one end of the feed connector 5 is connected to the feed point 112 at one end 11 of the first radiator 1, and the other end is connected to a feed signal point (not shown); one end of the second ground connector 6 is connected to the second ground point 221 of the other end 22 of the second radiator 2, and the other end is connected to a second ground signal point (not shown). The first ground connector 4, the feed connector 5 and the second ground connector 6 may be elastic pieces.
According to practical situations, the position of the antenna device is not limited to the right side position of the terminal in the figure, and can be located at the top, bottom and left side positions of the terminal. The position of the antenna device is not limited to the inside of the housing of the front housing of the terminal, and may be located on the outer surface of the housing or on the rear housing of the terminal.
The antenna device according to the embodiment of the present application will be described below with reference to specific examples.
The terminal takes a mobile phone as an example, and the frequency band corresponding to the antenna device is a frequency division duplex-long term evolution B7 frequency band (B7 frequency band, i.e. uplink 2500-2570MHz, downlink 2620-2690 MHz).
Referring to fig. 3, the antenna device according to the embodiment of the present invention is located at the edge of the right side of the mobile phone, and the whole antenna device is composed of two parts, the first part is the high-frequency antenna body (i.e., the first radiator 1) and its grounding point and feeding point (i.e., the first grounding point 111 and the feeding point 112). In the figure, the first radiator 1 is a main radiator, the main radiator is located on the side edge of the mobile phone, and the other end 12 of the main radiator is located near the slot 3, one end 11 of the main radiator includes a first grounding point 111 and a feeding point 112, and the positions of the first grounding point 111 and the feeding point 112 are far away from the slot 3 relative to the other end 12 of the main radiator. The second part is the added remote parasitic radiator (i.e. the second radiator 2) and the remote ground point (i.e. the second ground point 221). The distance (i.e., the second distance D2) between the distal ground point (i.e., the second ground point 221) and the feeding point (i.e., the feeding point 112) of the main radiator (i.e., the first radiator 1) is greater than 20mm, and the total width of the two radiators (i.e., the total width L2 of the first radiator 1 and the second radiator 2) is greater than 6mm. The first part serves as a main radiator of the high-frequency antenna to perform the main radiation function of the antenna device, and the second part serves as a coupling auxiliary radiator of the high-frequency antenna to help the antenna device radiate and also serves to disperse electromagnetic radiation of the high-frequency antenna. The high-frequency antenna device ensures the radiation intensity of the antenna device bus, and disperses the radiation intensity of the antenna device on a unit area, thereby meeting the requirements of OTA TRP and FCC certification SAR value. Under the condition of the same TRP, the SAR value of the antenna device is far lower than that of a conventional antenna device, the FCC certification test cost and the SAR reduction cost of a mobile phone are saved, and the product competitiveness is improved.
In summary, the high-frequency antenna device according to the embodiment of the present application adds a far-end parasitic radiator and a far-end ground point on the basis of the ground point and the feed point of the conventional radiator, and the far-end ground point can disperse electromagnetic radiation of the high-frequency antenna device, thereby effectively reducing the SAR value of the high-frequency antenna device. The high-frequency antenna device of the embodiment of the application has the following advantages compared with the conventional antenna device: for the same TRP, the SAR value of the high frequency antenna device of the embodiment of the present application is much lower than that of the conventional antenna device, and for the specific data, see table 1.
TABLE 1
| Scheme(s) | OTA(dBm) | SAR(W/kg) |
| Conventional antenna device (LTE B7) | 17 | 3.5 |
| Antenna device of the embodiment of the application (LTE B7) | 17 | 0.9 |
In table 1, the frequency bands corresponding to the high-frequency antenna device and the conventional antenna device in the embodiment of the present application are both LTE B7 frequency bands, where the SAR value of the conventional antenna device exceeds a standard seriously, the SAR value is 3.5W/kg (FCC SAR standard < 1.6W/kg), SAR reduction measures must be used, and the performance of the antenna device is seriously affected; the high-frequency antenna device of the embodiment of the application has the SAR value reaching the standard under the condition of the same TRP, and the SAR value is very small (the SAR value is 0.9W/kg and is only about 1/4 of the SAR value of the conventional antenna device), so that the OTA performance requirement of the antenna device is met, and the extremely low SAR value is ensured.
It is to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The preferred embodiments of the present application have been described above with reference to the accompanying drawings, and are not intended to limit the scope of the claims of the application accordingly. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present application are intended to be within the scope of the claims of the present application.
Claims (10)
1. An antenna device, characterized in that the antenna device comprises:
the antenna comprises a first radiating body, a second radiating body and a radiating element, wherein one end of the first radiating body comprises a first grounding point and a feeding point;
and one end of the second radiator is spaced and overlapped with the other end of the first radiator, and the other end of the second radiator comprises a second grounding point.
2. The antenna device according to claim 1, wherein, of the first ground point and the feed point at the one end of the first radiator, the feed point at the one end of the first radiator is distant from the second ground point at the other end of the second radiator, and the first ground point at the one end of the first radiator is close to the second ground point at the other end of the second radiator.
3. The antenna device of claim 1, wherein a first distance between one end of the second radiator and the other end of the first radiator is greater than 0mm and less than 2 mm.
4. The antenna device according to claim 1, wherein the shape of the first radiator comprises one of an inverted-F shape and a zigzag shape.
5. The antenna device of claim 1,
a second distance between a feed point at one end of the first radiator and a second grounding point at the other end of the second radiator can be adjusted along with a frequency band corresponding to the antenna device;
the length of the overlapping part between one end of the second radiator and the other end of the first radiator can be adjusted along with the frequency band corresponding to the antenna device;
the total width of the first radiator and the second radiator can be adjusted along with the frequency band corresponding to the antenna device.
6. The antenna device according to claim 5, wherein when the frequency band corresponding to the antenna device is a frequency division Duplex-Long term evolution B7 frequency band,
a second distance between a feed point at one end of the first radiator and a second ground point at the other end of the second radiator is greater than 20 millimeters;
the length of an overlapping part between one end of the second radiator and the other end of the first radiator is more than 5 millimeters;
the total width of the first radiator and the second radiator is larger than 6 millimeters.
7. A terminal, characterized in that the terminal comprises an antenna arrangement according to any of claims 1-6.
8. The terminal of claim 7, wherein the side of the terminal includes a card slot, wherein the first radiator is located along the side of the terminal, wherein the first ground point and the feed point of one end of the first radiator are located away from the card slot, and wherein the other end of the first radiator is located close to the card slot.
9. The terminal of claim 8, wherein the second radiator is disposed on a side of the first radiator remote from the card slot.
10. The terminal of claim 7, further comprising a first ground connector, a feed connector, and a second ground connector, wherein one end of the first ground connector is connected to the first ground point at one end of the first radiator, and the other end is connected to a first ground signal point; one end of the feed connecting piece is connected with a feed point at one end of the first radiator, and the other end of the feed connecting piece is connected with a feed signal point; one end of the second grounding connecting piece is connected with a second grounding point at the other end of the second radiator, and the other end of the second grounding connecting piece is connected with a second grounding signal point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222105415.8U CN218385731U (en) | 2022-08-10 | 2022-08-10 | Antenna device and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222105415.8U CN218385731U (en) | 2022-08-10 | 2022-08-10 | Antenna device and terminal |
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| Publication Number | Publication Date |
|---|---|
| CN218385731U true CN218385731U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222105415.8U Active CN218385731U (en) | 2022-08-10 | 2022-08-10 | Antenna device and terminal |
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| CN (1) | CN218385731U (en) |
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- 2022-08-10 CN CN202222105415.8U patent/CN218385731U/en active Active
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