CN111834745A - Antenna device and electronic equipment - Google Patents
Antenna device and electronic equipment Download PDFInfo
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- CN111834745A CN111834745A CN202010742102.6A CN202010742102A CN111834745A CN 111834745 A CN111834745 A CN 111834745A CN 202010742102 A CN202010742102 A CN 202010742102A CN 111834745 A CN111834745 A CN 111834745A
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- 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
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- 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
- H01Q1/243—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 with built-in antennas
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- 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
- H01Q5/10—Resonant antennas
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- 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
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The embodiment of the application discloses antenna device and electronic equipment, antenna device includes: the radiator, one end of radiator is the earthing terminal, another end is the unsettled free end, there is a feed point between earthing terminal and free end, the radiator between feed point and earthing terminal forms the first radiation section, the radiator between feed point and free end forms the second radiation section; the feed source is electrically connected with the feed point and used for feeding a first frequency band excitation signal into the radiating body, and the first frequency band excitation signal is used for exciting the first radiating section to generate resonance of a first frequency band; the band elimination device is electrically connected between the feed source and the feed point, the feed source is also used for providing multi-frequency mixed excitation signals, the band elimination device is used for dividing the multi-frequency mixed excitation signals into excitation signals of a second frequency band and a third frequency band, and the excitation signals of the second frequency band and the third frequency band are respectively used for exciting the second radiation section to generate resonance of the second frequency band and the third frequency band.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to an antenna device and electronic equipment.
Background
With the continuous development of communication technology, more and more functions and technologies are continuously integrated into electronic devices such as mobile phones and tablet computers.
At present, a common antenna scheme cannot cover multiple frequency bands due to environmental restrictions, and in order to meet the requirement of bandwidth, an antenna may be generally connected with a tuning device such as a variable capacitor or a switch, so as to implement multi-band coverage. As shown in fig. 1 to 3, three equivalent schematic diagrams for implementing antenna tuning by using switches or variable capacitors are shown, where Tuner is a switch, and C isaThe switch and the variable capacitor are grounded or connected with the feed source.
However, for the solutions of fig. 1 to 3, which implement multiple frequencies of the antenna, a certain number of switches or variable capacitors must be added, the number of components is large, the structure is complex, and only two frequency bands of resonance can be implemented.
Disclosure of Invention
The embodiment of the application provides an antenna device electronic device and an antenna resonance method, and through flexible application of a band elimination device, resonance of an antenna on three frequency bands can be achieved, and the structure of the antenna is simplified.
The technical scheme of the embodiment of the application is realized as follows:
an embodiment of the present application provides an antenna apparatus, including:
the radiator comprises a radiator body, wherein one end of the radiator body is a grounding end, the other end of the radiator body is a suspended free end, a feeding point is arranged between the grounding end and the free end, the radiator body between the feeding point and the grounding end forms a first radiation section, and the radiator body between the feeding point and the free end forms a second radiation section;
the feed source is electrically connected with the feed point and used for feeding a first frequency band excitation signal into the radiating body, and the first frequency band excitation signal is used for exciting the first radiating section to generate resonance of a first frequency band;
the band elimination device is electrically connected between the feed source and the feed point, the feed source is also used for providing multi-frequency mixed excitation signals, the band elimination device is used for dividing the multi-frequency mixed excitation signals into excitation signals of a second frequency band and a third frequency band, and the excitation signals of the second frequency band and the third frequency band are respectively used for exciting the second radiation band to generate resonance of the second frequency band and the third frequency band.
In the above antenna device, further comprising:
the coupling device is electrically connected between the band elimination device and the feed source and is used for coupling the first frequency band excitation signal and the multi-frequency mixed excitation signal to the band elimination device.
In the above antenna device, the resonance frequency of the band elimination device is a target frequency;
the band elimination device is used for dividing signals with the frequency higher than the target frequency and signals with the frequency lower than the target frequency from the multi-frequency mixed excitation signals to obtain the excitation signals of the second frequency band and the third frequency band.
In the above antenna device, the band elimination device is a band elimination filter;
the band-stop filter is a lumped band-stop element or a distributed band-stop element.
In the above antenna device, the coupling device is a coupling capacitor;
the coupling capacitor is a lumped capacitive element or a distributed capacitive element.
The embodiment of the application provides electronic equipment, and the electronic equipment comprises the antenna device.
In the above electronic device, comprising:
the metal middle frame is provided with a gap to form two free ends;
and a part of the middle frame between the grounding point of the metal middle frame and one of the two free ends forms a radiator of the antenna device.
In the above electronic device, further comprising: a main board, a plurality of first and second connection terminals,
the main board is arranged in the metal middle frame, and the metal middle frame surrounds the main board;
in the above electronic device, the feed source and the matching circuit included in the antenna device are disposed on the main board.
In the above electronic device, further comprising: a battery;
the battery is electrically connected with the mainboard and used for supplying power to the mainboard.
The embodiment of the application provides an antenna device and electronic equipment, and the antenna device includes: the radiator, one end of radiator is the earthing terminal, another end is the unsettled free end, there is a feed point between earthing terminal and free end, the radiator between feed point and earthing terminal forms the first radiation section, the radiator between feed point and free end forms the second radiation section; the feed source is electrically connected with the feed point and used for feeding a first frequency band excitation signal into the radiating body, and the first frequency band excitation signal is used for exciting the first radiating section to generate resonance of a first frequency band; the band elimination device is electrically connected between the feed source and the feed point, the feed source is also used for providing multi-frequency mixed excitation signals, the band elimination device is used for dividing the multi-frequency mixed excitation signals into excitation signals of a second frequency band and a third frequency band, and the excitation signals of the second frequency band and the third frequency band are respectively used for exciting the second radiation section to generate resonance of the second frequency band and the third frequency band. The antenna device provided by the embodiment of the application can realize the resonance of the antenna on three frequency bands and simplify the structure of the antenna through the flexible application of the band elimination device.
Drawings
Fig. 1 is a first schematic diagram of an antenna tuning scheme provided in the prior art;
fig. 2 is an equivalent schematic diagram of an antenna tuning scheme provided in the prior art;
fig. 3 is a third schematic diagram of an antenna tuning scheme provided in the prior art;
fig. 4 is a first schematic structural diagram of an antenna apparatus according to an embodiment of the present disclosure;
fig. 5 is a second schematic structural diagram of an antenna device according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an antenna apparatus according to an embodiment of the present application;
fig. 7(a) is a first schematic diagram of a current distribution provided in an embodiment of the present application;
fig. 7(b) is a schematic view of a current distribution according to an embodiment of the present application;
fig. 8 is a first diagram illustrating a relationship between return loss and frequency according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a band elimination device provided in an embodiment of the present application;
FIG. 10 is a schematic diagram illustrating the variation of the impedance of a band stop device according to an embodiment of the present application;
FIG. 11 is a schematic diagram of a band stop device according to an embodiment of the present application;
fig. 12 is a second schematic diagram illustrating a relationship between return loss and frequency according to an embodiment of the present disclosure;
fig. 13 is a schematic diagram of the antenna efficiency according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
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. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings.
The embodiment of the application provides an antenna device. Fig. 4 is a first schematic structural diagram of an antenna apparatus according to an embodiment of the present disclosure. As shown in fig. 4, the antenna device 1 includes:
the radiator 10, one end of the radiator 10 is the ground terminal, another end is the free end suspended in midair, there is a feed point between ground terminal and the free end, the radiator 10 between feed point and ground terminal forms the first radiation section 101, the radiator 10 between feed point and free end forms the second radiation section 102;
the feed source 11 is electrically connected with the feed point and used for feeding a first frequency band excitation signal into the radiator 10, and the first frequency band excitation signal is used for exciting the first radiation section 101 to generate resonance of a first frequency band;
the band elimination device 12 is electrically connected between the feed source 11 and a feed point, the feed source 11 is further used for providing a multi-frequency mixed excitation signal, the band elimination device 12 is used for dividing the multi-frequency mixed excitation signal into excitation signals of a second frequency band and a third frequency band, and the excitation signals of the second frequency band and the third frequency band are respectively used for exciting the second radiation band 102 to generate resonance of the second frequency band and the third frequency band.
It should be noted that, in the embodiment of the present application, the feed source 11 may be a device that provides an excitation signal, such as a radio frequency chip. The specific feed source 11 may be determined according to actual requirements, and the embodiment of the present application is not limited.
It should be noted that, in the embodiment of the present application, the band-stop device 12 may be a band-stop filter. The specific band-stop filter can be a lumped band-stop element or a distributed band-stop element. The type of the band-stop filter can be determined according to actual requirements and application scenarios, and the embodiment of the present application is not limited.
It should be noted that, in the embodiment of the present application, as shown in fig. 4, on the radiator 10, the feeding point is divided into two segments, namely, a first radiating segment 101 and a second radiating segment 102. The feed source 11 can provide a first frequency band excitation signal and a multi-frequency mixed excitation signal, wherein the first frequency band excitation signal can excite the first radiation section 101 to generate resonance of the first frequency band, and the multi-frequency mixed excitation signal is divided into excitation signals of a second frequency band and a third frequency band under the action of the band elimination device 12, and can excite the second radiation section 102 to generate resonance of the second frequency band and the third frequency band. That is, the antenna device 1 can actually realize resonance in the first frequency band, the second frequency band, and the third frequency band, i.e., resonance in three frequency bands, respectively.
Fig. 5 is a second schematic structural diagram of an antenna device according to an embodiment of the present application. As shown in fig. 5, in the embodiment of the present application, the antenna apparatus 1 further includes: and the coupling device 13 is electrically connected between the band elimination device 12 and the feed source 11, and is used for coupling the first frequency band excitation signal and the multi-frequency mixed excitation signal to the band elimination device 12.
It should be noted that, in the embodiment of the present application, the coupling device 13 may be a coupling capacitor. The specific coupling capacitance may be a lumped capacitive element or a distributed capacitive element. The type of the coupling capacitor may be determined according to actual requirements and application scenarios, and the embodiment of the present application is not limited.
Specifically, in the embodiment of the present application, the resonant frequency of the band elimination device 12 is the target frequency; the band elimination device 12 is used for dividing signals with frequencies higher than the target frequency and signals with frequencies lower than the target frequency from the multi-frequency mixed excitation signals to obtain excitation signals of a second frequency band and a third frequency band.
It should be noted that, in the embodiment of the present application, in the case of only accessing the coupling device 13 without accessing the band-stop device 12, as shown in the connection schematic diagram of fig. 6, after the coupling device 13 couples the excitation signal of the first frequency band provided by the feed source 11 to the first radiation segment 101, the first radiation segment 101 generates a resonance 1 under excitation of the excitation signal of the first frequency band, and the current distribution of the resonance 1 is shown in fig. 7(a), after the coupling device 13 couples another excitation signal provided by the feed source 11 to the second radiation segment 102, the second radiation segment 102 generates a resonance 2 under excitation of the excitation signal, and the current distribution of the resonance 2 is shown in fig. 7(b), that is, in fact, the radiator 10 can resonantly cover a dual-frequency band, and the return loss schematic diagram of the radiator 10 is shown in fig. 8, that is, the radiator 10 generates resonance of the dual-frequency band.
It is understood that, in the embodiment of the present application, the coupling device 13 is actually used to couple the multi-frequency mixed excitation signal provided by the feed source 11 to the band elimination device 12, and the band elimination device 12 may divide the multi-frequency mixed excitation signal, so as to provide excitation signals of two frequency bands for the second radiation section 102, thereby implementing multi-frequency resonance of the second radiation section 102.
Fig. 9 is a schematic structural diagram of a band elimination device according to an embodiment of the present application. As shown in fig. 9, the bandstop device 12 may include a capacitance C1 and an inductance L1. The impedance z of the bandstop device 12 at different frequencies can be calculated using the following equation:
where f is the frequency, ω ═ 2 π f. The impedance of the band elimination device 12 at different frequencies is shown in fig. 10, and it can be known from fig. 10 that the band elimination device 12 is equivalent to an inductor when the frequency of the input signal is lower than the resonant frequency of the band elimination device, that is, the target frequency, and is equivalent to a capacitor when the frequency of the input signal is higher than the target frequency, so that the signal division can be realized.
It can be understood that, in the embodiment of the present application, in accessing the band elimination device 12, that is, in the connection relationship shown in fig. 4 and fig. 5, the band elimination device 12 may divide the multi-frequency mixed excitation signal provided by the feed source 11 to obtain the excitation signals of the second frequency band and the third frequency band. Specifically, in the multi-frequency hybrid excitation signal, the band elimination device 12 is equivalent to a series inductance for a portion lower than the target frequency and is equivalent to a series capacitance for a portion higher than the target frequency, as shown in fig. 11, and the series inductance can actually reduce resonance and the series capacitance can improve resonance, so that the second radiation section 102 can be further excited to generate resonance in two frequency bands, and finally, the radiator 10 can generate resonance in three frequency bands to cover the three frequency bands, as shown in fig. 12.
Fig. 13 is a schematic diagram of the antenna efficiency according to an embodiment of the present application. As shown in fig. 13, in the embodiment of the present application, the radiator 10 has good performance in all three frequency bands, and the efficiency of the radiator 10 can meet the design requirement of the antenna.
An embodiment of the present application provides an antenna apparatus, including: the radiator, one end of radiator is the earthing terminal, another end is the unsettled free end, there is a feed point between earthing terminal and free end, the radiator between feed point and earthing terminal forms the first radiation section, the radiator between feed point and free end forms the second radiation section; the feed source is electrically connected with the feed point and used for feeding a first frequency band excitation signal into the radiating body, and the first frequency band excitation signal is used for exciting the first radiating section to generate resonance of a first frequency band; the band elimination device is electrically connected between the feed source and the feed point, the feed source is also used for providing multi-frequency mixed excitation signals, the band elimination device is used for dividing the multi-frequency mixed excitation signals into excitation signals of a second frequency band and a third frequency band, and the excitation signals of the second frequency band and the third frequency band are respectively used for exciting the second radiation section to generate resonance of the second frequency band and the third frequency band. The antenna device provided by the embodiment of the application can realize the resonance of the antenna on three frequency bands and simplify the structure of the antenna through the flexible application of the band elimination device.
The embodiment of the present application further provides an electronic device, which includes the antenna apparatus 1. It should be noted that, in the embodiment of the present application, the electronic device may be a mobile phone, a tablet computer, a notebook computer, or the like. Specific electronic devices are not limited in the embodiments of the present application.
Fig. 14 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 14, the electronic apparatus 2 includes the antenna device 1, and the electronic apparatus 2 includes:
the metal middle frame 20 is provided with a gap to form two free ends;
a portion of the middle frame between the ground point of the metal middle frame 20 and one of the two free ends forms the radiator 10 included in the antenna device 1.
It is understood that, in the embodiment of the present application, a segment of the radiator 10 as the antenna device 1 may be separated from the metal middle frame 20 by a slot.
In the embodiment of the present application, as shown in fig. 14, the electronic device 2 further includes:
the main board 21, the main board 21 is set up in the metal middle frame 20, the metal middle frame 20 surrounds the main board 21;
it should be noted that, in the embodiment of the present application, as shown in fig. 14,
the feed 11 and the band stop device 12 comprised by the antenna arrangement 1 are disposed on the motherboard 21. In addition, a coupling capacitor 13 (not shown in the figure) between the feed source 11 and the band-stop device 12 is also disposed on the motherboard 21.
It should be noted that, in the embodiment of the present application, the electronic device 2 further includes a main board 21, the main board 21 is disposed inside the electronic device 2, and the metal middle frame 20 is a frame of the electronic device 2, and surrounds the main board 21.
It will be appreciated that in the embodiment of the present application, the motherboard 21 is actually a printed circuit board, and that not only the above-mentioned feed source 11, band rejection device 12 and coupling capacitor 13, but also other circuits or components may be disposed on the motherboard 21 to provide different functions. The specific components disposed on the motherboard 21 may be determined according to actual requirements, and the embodiment of the present application is not limited.
In the embodiment of the present application, as shown in fig. 14, the electronic device 2 further includes:
a battery 22;
the battery 22 is connected to the main board 21 and is used for supplying power to the main board 21.
It is understood that, in the embodiment of the present application, the electronic device 2 further includes a battery 22, the battery 22 is connected to the motherboard 21 to supply power to the motherboard 21, and various components or circuits are disposed on the motherboard 21 to enable normal operation.
It should be noted that, in the embodiment of the present application, as shown in fig. 14, the electronic device 2 may further include a front camera 23, a rear camera 24, a metal floor and screen 25, a small board 26, a speaker 27, and the like, and further, the electronic device 2 may further include a card slot 28 for inserting a user card and a Universal Serial Bus (USB) interface 29. Of course, the electronic device 2 may also include other specific components, and the embodiment of the present application is not limited.
It can be understood that, compared with the antenna design solutions provided by the prior art shown in fig. 1 to fig. 3, in the embodiment of the present application, the electronic device 2 does not need to use a switch or a variable resistor, and only by flexible application of the band elimination device 12, the antenna can generate resonance in three frequency bands, so that the cost of the electronic device 2 can be reduced to a certain extent.
The embodiment of the application provides electronic equipment which comprises the antenna device. According to the electronic equipment provided by the embodiment of the application, the antenna device is flexibly applied through the band elimination device, so that the antenna can generate resonance of three frequency bands, and the structure of the electronic equipment is simplified.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application are included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An antenna device, comprising:
the radiator comprises a radiator body, a first radiating section and a second radiating section, wherein one end of the radiator body is a grounding end, the other end of the radiator body is a suspended free end, a feeding point is arranged between the grounding end and the free end, the radiator body between the feeding point and the grounding end forms the first radiating section, and the radiator body between the feeding point and the free end forms the second radiating section;
the feed source is electrically connected with the feed point and used for feeding a first frequency band excitation signal into the radiating body, and the first frequency band excitation signal is used for exciting the first radiating section to generate resonance of a first frequency band;
the band elimination device is electrically connected between the feed source and the feed point, the feed source is also used for providing multi-frequency mixed excitation signals, the band elimination device is used for dividing the multi-frequency mixed excitation signals into excitation signals of a second frequency band and a third frequency band, and the excitation signals of the second frequency band and the third frequency band are respectively used for exciting the second radiation band to generate resonance of the second frequency band and the third frequency band.
2. The antenna device according to claim 1, further comprising:
the coupling device is electrically connected between the band elimination device and the feed source and is used for coupling the first frequency band excitation signal and the multi-frequency mixed excitation signal to the band elimination device.
3. The antenna arrangement according to claim 1, characterized in that the resonance frequency of the band-stop device is a target frequency;
the band elimination device is used for dividing signals with the frequency higher than the target frequency and signals with the frequency lower than the target frequency from the multi-frequency mixed excitation signals to obtain the excitation signals of the second frequency band and the third frequency band.
4. The antenna device of claim 1,
the band elimination device is a band elimination filter;
the band-stop filter is a lumped band-stop element or a distributed band-stop element.
5. The antenna device according to claim 2,
the coupling device is a coupling capacitor;
the coupling capacitor is a lumped capacitive element or a distributed capacitive element.
6. An electronic device, characterized in that the electronic device comprises an antenna arrangement according to any of claims 1-5.
7. The electronic device of claim 6, wherein the electronic device comprises:
the metal middle frame is provided with a gap to form two free ends;
and a part of the middle frame between the grounding point of the metal middle frame and one of the two free ends forms a radiator included by the antenna device.
8. The electronic device of claim 7, further comprising:
the mainboard sets up in the metal center, the metal center centers on the mainboard.
9. The electronic device of claim 8,
the feed source and the band elimination device which are comprised by the antenna device are arranged on the mainboard.
10. The electronic device of claim 8, further comprising:
a battery;
the battery is electrically connected with the mainboard and used for supplying power to the mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742102.6A CN111834745A (en) | 2020-07-29 | 2020-07-29 | Antenna device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010742102.6A CN111834745A (en) | 2020-07-29 | 2020-07-29 | Antenna device and electronic equipment |
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| CN111834745A true CN111834745A (en) | 2020-10-27 |
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| CN202010742102.6A Pending CN111834745A (en) | 2020-07-29 | 2020-07-29 | Antenna device and electronic equipment |
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| CN112531342A (en) * | 2020-12-07 | 2021-03-19 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
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| CN112531342A (en) * | 2020-12-07 | 2021-03-19 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
| CN112909509B (en) * | 2021-01-20 | 2023-08-22 | 维沃移动通信有限公司 | Antenna and electronic device |
| CN112909509A (en) * | 2021-01-20 | 2021-06-04 | 维沃移动通信有限公司 | Antenna and electronic device |
| CN112928469A (en) * | 2021-01-22 | 2021-06-08 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN112928469B (en) * | 2021-01-22 | 2023-12-26 | Oppo广东移动通信有限公司 | Antenna device and electronic equipment |
| CN115411503A (en) * | 2021-05-27 | 2022-11-29 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN115411503B (en) * | 2021-05-27 | 2024-03-08 | Oppo广东移动通信有限公司 | Antenna device and electronic equipment |
| CN114725663A (en) * | 2022-04-28 | 2022-07-08 | 深圳汉阳天线设计有限公司 | Multi-frequency antenna and electronic equipment |
| WO2024078168A1 (en) * | 2022-10-10 | 2024-04-18 | Oppo广东移动通信有限公司 | Antenna assembly, middle frame assembly, and electronic device |
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