CN109449575B - Antenna structure and terminal equipment - Google Patents
Antenna structure and terminal equipment Download PDFInfo
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- CN109449575B CN109449575B CN201811455526.3A CN201811455526A CN109449575B CN 109449575 B CN109449575 B CN 109449575B CN 201811455526 A CN201811455526 A CN 201811455526A CN 109449575 B CN109449575 B CN 109449575B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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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
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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
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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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
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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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
- 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
- H01Q5/321—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 within a radiating element or between connected radiating elements
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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
- 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
- H01Q5/335—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 at the feed, e.g. for impedance matching
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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
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention provides an antenna structure and terminal equipment. The antenna structure includes: a feed source; the metal arm is provided with a gap for dividing the metal arm into a first metal arm and a second metal arm, and one end of the first metal arm and one end of the second metal arm far away from the gap are respectively grounded; a feeding point is arranged at a preset position of the first metal arm; an impedance matching network connected to the feed point and the feed source, respectively. The invention can cover a plurality of frequency bands by using one antenna structure while meeting the performance requirement of the antenna, can reduce the number of the antennas, further is beneficial to reducing the structural space occupied by the total feed network, reduces the layout difficulty of the whole antenna, can also reduce the number of gaps of the whole antenna, is beneficial to improving the structural strength and meeting the appearance requirement of the whole product.
Description
Technical Field
The embodiment of the invention relates to the technical field of electronics, in particular to an antenna structure and terminal equipment.
Background
With the maturity and development of New air interface (NR) of fifth generation communication technology (5G), 5G NR mobile terminal products are getting closer and closer to us.
In the 5G era, the situation that the same operator owns networks of different systems (including 4G, 5G and WLAN) will still exist for a long time. The 5G mobile phone needs to firstly adopt 2T4R (2 antenna transmission/4 antenna reception) as a basic scheme of a transceiver in a sub-6GHz (lower than 6GHz band), and for a terminal antenna, at least 4 sub-6G antennas (domestic sub-6G includes two bands of N78 and N79, and 4 antennas of two bands or a combination of more single-band antennas need to be covered at the same time) on the basis of the original multiple antennas (for example, LTE 4 x 4MIMO is supported). The addition of the GPS L5 frequency band antenna which can be used for improving the positioning accuracy is equivalent to 5-9 more antennas than the prior art. In addition, some operators also have some requirements for inter-band Carrier Aggregation (CA), such as requirement for coexistence of B1/B3, B39/B41, N78/B3, N79/B41, and the like, and requirement for antenna to cover multiple frequency bands simultaneously.
Meanwhile, with the continuous improvement of the screen ratio of the mobile phone, the effective headroom of the antenna is becoming worse and worse, and the effective radiation space of the antenna becomes worse and worse. Antenna workers need to address the issue of implementing more antennas and radiating them efficiently in more hostile headroom environments, and at the same time, more complex antenna isolation, coexistence and efficiency issues.
For the current mainstream all-metal back cover and metal middle frame appearance mobile phones, the increase of the antennas also means the increase of the antenna slots, and great influence is brought to the reliability and the appearance of the structure. All the factors restrict the design of the antenna, and very serious challenges are brought to antenna workers.
Disclosure of Invention
The embodiment of the invention provides an antenna structure and a mobile terminal, and aims to solve the problems that the number of antennas is large and the layout of the whole antenna is difficult due to the fact that 5G terminal equipment covers a plurality of frequency bands.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an antenna structure, including:
a feed source;
the metal arm is provided with a gap for dividing the metal arm into a first metal arm and a second metal arm, and one end of the first metal arm and one end of the second metal arm far away from the gap are respectively grounded; a feeding point is arranged at a preset position of the first metal arm;
the impedance matching network is respectively connected with the feed point and the feed source;
the first metal arm is excited by the feed source to generate a first resonance mode with a first resonance frequency and a second resonance mode with a second resonance frequency;
the second metal arm generates a third resonant mode having a third resonant frequency through slot coupling.
In a second aspect, an embodiment of the present invention further provides a mobile terminal, including: the antenna structure as described in the above embodiments.
In the embodiment of the invention, the metal arm is provided with the gap for dividing the metal arm into the first metal arm and the second metal arm, the preset position of the first metal arm is provided with the feed point and the impedance matching network respectively connected with the feed point and the feed source, the antenna structure can realize that the first metal arm generates the first resonance mode with the first resonance frequency and the second resonance mode with the second resonance frequency through the excitation of the feed source, the second metal arm generates the third resonance mode with the third resonance frequency through the gap coupling, and when the performance requirement of the antenna is met, one antenna structure can cover a plurality of frequency bands, the number of the antennas can be reduced, thereby being beneficial to reducing the structural space occupied by the total feed network, reducing the layout difficulty of the whole antenna, and reducing the number of the gaps of the whole antenna, the structural strength is improved, and the appearance requirement of the whole machine product is met.
Drawings
Fig. 1 is a schematic diagram of an antenna structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the change of the VSWR with frequency of the antenna structure according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of an impedance adjusting circuit connected in series with an impedance matching network according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an impedance adjusting circuit and an impedance matching network connected in parallel according to an embodiment of the invention.
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 some, not all, embodiments of the present invention. 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.
Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention. The antenna structure includes: a feed source 5; the device comprises a metal arm, wherein a gap 3 for dividing the metal arm into a first metal arm 1 and a second metal arm 2 is formed in the metal arm, and one end E of the first metal arm 1 and one end A, far away from the gap 3, of the second metal arm 2 are respectively grounded; a feeding point D is arranged at a preset position of the first metal arm 1; and the impedance matching network 4 is respectively connected with the feeding point D and the feed source 5.
The first metal arm 1 is excited by the feed source 5 to generate a first resonance mode with a first resonance frequency and a second resonance mode with a second resonance frequency; the second metal arm 2 is coupled through the slot 3 to generate a third resonant mode having a third resonant frequency.
It should be noted that the first metal arm 1 and the second metal arm 2 may be generally referred to as antenna resonating arms.
Here, the first metal arm 1 and the second metal arm 2 are made of a metal conductive material, and may be made of a common Flexible Printed Circuit (FPC), a Printed Direct Structuring (PDS), a Laser Direct Structuring (LDS), or a metal conductive material such as a metal middle frame or a part of a metal back cover.
In fig. 1, G1 and G2 are reference grounds of the antenna. CE, the first metal arm 1, is connected to G1 to form a first antenna element; AB, i.e. the second metal arm 2, is connected to G2 to form a second antenna element.
Here, preferably, the gap 3 is filled with a non-metallic dielectric material, and a medium such as plastic is generally used.
As shown in fig. 1, the first metal arm 1 and the second metal arm 2 have a coupling capacitance between the point B, C of the slot 3, and the parallel plate capacitor is formed by B, C, the slot 3, and the non-metallic dielectric material filled in the slot 3.
Here, the capacitance value of the coupling capacitor is related to the area of the end face where point B, C is located, the distance between points B, C, and the medium filled in the gap 3.
Further, the radio frequency energy reaches the feeding point D of the first metal arm 1 through the feed 5 and the impedance matching network 4, and is thereby excited to generate a first resonance mode having a first resonance frequency and a second resonance mode having a second resonance frequency.
Radio frequency energy passes through the feed 5 and the impedance matching network 4, passes through the feed point D of the first antenna element (the first metal arm 1 and the G1 are connected to form the first antenna element), reaches the metal part at one end of the slot 3 formed by the first metal arm 1 and the second metal arm 2, specifically, the metal arm in the DC section in the figure, reaches the point C, passes through the coupling capacitance of the slot 3, and is transmitted to the second antenna element (the second metal arm 2 and the G2 are connected to form the second antenna element), and a third resonant mode having a third resonant frequency is excited.
It should be noted that the magnitude of the third resonant frequency is related to the length of the second metal arm 2. The length of the second metal arm 2 is related to the gap 3, for example, the area of the end face where the point B, C is located, the distance between B, C, the medium filled in the gap 3, and the like.
The antenna structure provided by the embodiment of the invention can realize that the first metal arm generates a first resonance mode with a first resonance frequency and a second resonance mode with a second resonance frequency through the excitation of the feed source, the second metal arm generates a third resonance mode with a third resonance frequency through the coupling of the gap, and can cover a plurality of frequency bands by utilizing one antenna structure while meeting the performance requirement of the antenna, thereby reducing the number of the antennas, further being beneficial to reducing the structural space occupied by the total feed network, reducing the layout difficulty of the whole antenna, and reducing the number of the gaps of the whole antenna, the structural strength of the whole machine is improved, and the appearance requirement of the whole machine product is met.
As an alternative implementation manner, the length from the feeding point D to the other end C of the first metal arm 1 (i.e. from the feeding point D to one end of the first metal arm 1 and the second metal arm 2 forming the slot 3) is greater than or equal to 2mm and less than or equal to 8 mm.
Here, it is preferable that the length from the feeding point D to the other end C of the first metal arm 1 is 5 mm.
Based on the above implementation manner, in a preferred embodiment, in order to enable the first metal arm 1 to be excited by the feed 5 to simultaneously excite the resonant mode based on the GPS L5 frequency band and the resonant mode based on the 5G N79 frequency band, optionally, the length of the first metal arm 1 is greater than or equal to 22mm and less than or equal to 30 mm.
It should be noted that the GPS L5 frequency band specifically includes: 1176.45 + -50 MHz.
The 5G N79 frequency band is specifically: 4400MHz to 5000 MHz.
Here, it is preferable that the length of the first metal arm 1 is 26 mm.
In order to enable the first metal arm 1 to be excited by the feed source 5 to simultaneously excite a resonance mode based on a GPS L5 frequency band and a resonance mode based on a 5G N79 frequency band, and enable the second metal arm 2 to be excited by a coupling capacitance of the slot 3 to excite a resonance mode based on a 5G N78 frequency band, optionally, the length of the second metal arm 2 is greater than or equal to 5mm and less than or equal to 11 mm.
It should be noted that, the 5G N78 frequency band specifically includes: 3300 MHz-3800 MHz.
Based on the dimensional characteristics of the metal arms, the first resonant frequency f1 is smaller than the third resonant frequency f3, and the third resonant frequency f3 is smaller than the second resonant frequency f 2.
In another preferred embodiment, in order to enable the first metal arm 1 to be excited by the feed 5 to simultaneously excite the resonance mode based on the WIFI 2.4 frequency band and the resonance mode based on the 5G N79 frequency band, optionally, the length of the first metal arm 1 is greater than or equal to 8mm and less than or equal to 18 mm.
It should be noted that, the WIFI 2.4 frequency band specifically is: 2400M MHz-2500 MHz.
Here, it is preferable that the length of the first metal arm is 10 mm.
In order to enable the first metal arm 1 to be excited by the feed source 5 to simultaneously excite a resonance mode based on the WIFI 2.4 frequency band and a resonance mode based on the 5G N79 frequency band, and enable the second metal arm 2 to be excited by the coupling capacitance of the slot 3 to excite a resonance mode based on the 5G N78 frequency band, optionally, the length of the second metal arm 2 is greater than or equal to 5mm and less than or equal to 11 mm.
Based on the dimensional characteristics of the metal arms, the first resonant frequency f1 is smaller than the third resonant frequency f3, and the third resonant frequency f3 is smaller than the second resonant frequency f 2.
Based on the two embodiments with the dimensional characteristics of the metal arms described above, the antenna structure is finally able to simultaneously generate three resonance modes of the first resonance frequency f1, the second resonance frequency f2 and the third resonance frequency f 3. As shown in fig. 2, the schematic diagram shows the variation of the voltage standing wave ratio of the antenna structure with frequency at the same time. The horizontal axis represents the frequency f and the vertical axis represents the voltage standing wave ratio VWSR. Wherein, curve H represents a first resonance mode excited by the first metal arm 1 (CE segment metal part in fig. 1) through the feed 5, and f1 represents a first resonance frequency; curve J represents the coupling of the second metal arm 2 (the AB-segment metal part in fig. 1) through the slot 3, thus exciting a third resonance mode, and f3 represents the third resonance frequency; curve K represents a second resonance mode excited by the first metal arm 1 (CE segment metal part in fig. 1) through the feed 5, and f2 represents a second resonance frequency. The three resonance modes exist simultaneously, and multi-band coverage of the antenna can be realized.
It should be noted that, if the length of the first metal arm 1 is greater than or equal to 22mm and less than or equal to 30mm, the corresponding first resonant frequency f1 is a frequency within the GPS L5 frequency band; if the length of the first metal arm 1 is greater than or equal to 8mm and less than or equal to 18mm, the corresponding first resonant frequency f1 is a frequency within the WIFI 2.4 frequency band.
Preferably, the impedance matching network 4 includes, but is not limited to, one of the following combinations:
a first inductor;
a first capacitor;
the second inductor is connected with the second capacitor in series;
the third inductor is connected with the third capacitor in parallel.
Here, any series-parallel combination may be performed between the above combinations according to actual needs.
It should be noted that the impedance matching network 4 is used to match the antenna and the feeder to obtain maximum power transmission.
Based on the embodiment shown in fig. 1, in the actual overall layout design of the terminal device to which the antenna structure is applied, the position of the feeding point D is often limited by other factors such as stacking of components, so that the difference between the distance from the feeding point D to the slot 3 (i.e., the length of the CD shown in fig. 1) and the optimal size of 5mm is large; or, the coupling capacitance at the slot 3 may change due to the difference in the spacing between the actual B, C and the cross-sectional size or the filled medium, and the difference in the coupling amount may affect the initial impedance of the antenna, resulting in a shift in the resonant frequency of the antenna, and affecting the performance of the antenna, so as to meet the performance requirement of the antenna, and ensure that three resonant modes are excited while reducing the number of slots in the overall design, in another preferred embodiment of the present invention, the antenna structure of the present invention may further include:
an impedance adjusting circuit connected in series or in parallel with the impedance matching network 4.
Here, the impedance adjusting circuit is used to optimize the antenna bandwidth, widen the antenna bandwidth, and also to modify the resonant frequency of the antenna so that the antenna impedance loop becomes more convergent on the smith chart, thereby widening the bandwidth and improving the performance of the antenna.
In one example, as shown in fig. 3, it is one of the schematic diagrams of the impedance adjusting circuit connected in series with the impedance matching network. The antenna structure includes a plurality of impedance matching networks, e.g., M1, Mn, and the impedance adjusting circuit includes: a fourth inductor and a fourth capacitor connected in series with the fourth inductor.
In fig. 3, the fourth inductor and the fourth capacitor are connected in series and then connected in series between the impedance matching network M1 and Mn.
Here, optionally, the capacitance value of the fourth capacitor is greater than or equal to 0.1pf and less than or equal to 1.5 pf. The inductance value of the fourth inductor is greater than or equal to 1nH and less than or equal to 8 nH.
Preferably, the capacitance value of the fourth capacitor is 0.5 pf. The inductance value of the fourth inductor is 3 nH.
It should be noted that, the fourth inductor and the fourth capacitor connected in series may be a group connected in series in the impedance matching network, or may be a plurality of groups connected in series in the impedance matching network.
In another example, as shown in fig. 4, a second schematic diagram of the impedance adjusting circuit connected in parallel with the impedance matching network is shown. The impedance adjusting circuit in the antenna structure comprises: a fourth inductor and a fourth capacitor connected in series with the fourth inductor.
In fig. 4, the fourth inductor and the fourth capacitor are connected in series and then connected in parallel to the impedance matching network M. Here, as shown in fig. 4, there are two sets of the fourth inductor and the fourth capacitor connected in series. The specific connection relationship in each group is that the first end of the fourth inductor is connected with the impedance matching network M, and the second end of the fourth inductor is connected with the first end of the fourth capacitor; the second end of the fourth capacitor is grounded.
Here, optionally, the capacitance value of the fourth capacitor is greater than or equal to 0.1pf and less than or equal to 1.5 pf. The inductance value of the fourth inductor is greater than or equal to 1nH and less than or equal to 5 nH.
Preferably, the capacitance value of the fourth capacitor is 0.3 pf. The inductance value of the fourth inductor is 2.2 nH.
It should be noted that, the fourth inductor and the fourth capacitor connected in series may be connected in parallel in the impedance matching network, or may be connected in parallel in the impedance matching network.
The antenna structure provided by the embodiment of the invention can realize that the first metal arm generates a first resonance mode with a first resonance frequency and a second resonance mode with a second resonance frequency through the excitation of the feed source by arranging the feed point and the impedance matching network respectively connected with the feed point and the feed source on the metal arm, and the second metal arm generates a third resonance mode with a third resonance frequency through the coupling of the gap, and can cover a plurality of frequency bands by utilizing one antenna structure while meeting the performance requirement of the antenna, thereby reducing the number of the antennas and further being beneficial to reducing the structural space occupied by the total feed network (comprising a radio frequency feed, a test seat, a matching network, a feed spring structure and the like), the layout difficulty of the complete machine antenna is reduced, the number of gaps of the complete machine antenna can be reduced, the structural strength of the complete machine is improved, and the appearance requirement of a complete machine product is met.
An embodiment of the present invention further provides a terminal device, including: the antenna structure as described in the above embodiments.
In a preferred embodiment, the terminal device may further include: the metal middle frame, wherein, the first metal arm 1 and the second metal arm 2 are the component of the metal middle frame.
The terminal device described in the above embodiments may be a mobile phone, a navigation device, a tablet computer, a Personal Digital Assistant (PDA), or a notebook computer.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. An antenna structure, comprising:
a feed source (5);
the metal arm is provided with a gap (3) which divides the metal arm into a first metal arm (1) and a second metal arm (2), and one end (E) of the first metal arm (1) far away from the gap (3) and one end (A) of the second metal arm (2) far away from the gap (3) are respectively grounded; a feeding point (D) is arranged at a preset position of the first metal arm (1);
an impedance matching network (4), the impedance matching network (4) being connected to the feed point (D) and the feed source (5), respectively;
wherein the first metal arm (1) is excited by the feed source (5) to generate a first resonance mode with a first resonance frequency and a second resonance mode with a second resonance frequency;
the second metal arm (2) is coupled through a gap (3) to generate a third resonance mode with a third resonance frequency;
the length from the feeding point (D) to the other end (C) of the first metal arm (1) is greater than or equal to 2mm and less than or equal to 8 mm;
the length of the first metal arm (1) is greater than or equal to 22mm and less than or equal to 30mm, the length of the second metal arm (2) is greater than or equal to 5mm and less than or equal to 11mm, so that the first metal arm (1) is excited by the feed source (5) to simultaneously excite a first resonance mode based on a GPS L5 frequency band and a second resonance mode based on a 5G N79 frequency band, and simultaneously the second metal arm (2) is excited to excite a third resonance mode based on a 5G N78 frequency band through a coupling capacitor of the gap (3);
or, the length of the first metal arm (1) is greater than or equal to 8mm and less than or equal to 18mm, the length of the second metal arm (2) is greater than or equal to 5mm and less than or equal to 11mm, so that the first metal arm (1) is excited by the feed source (5) to simultaneously excite a first resonance mode based on a WIFI 2.4 frequency band and a second resonance mode based on a 5G N79 frequency band, and simultaneously, the second metal arm (2) is excited to simultaneously excite a third resonance mode based on a 5G N78 frequency band through the coupling capacitance of the gap (3).
2. The antenna structure according to claim 1, characterized in that the first resonance frequency is smaller than the third resonance frequency, which is smaller than the second resonance frequency.
3. The antenna structure according to claim 1, characterized in that the impedance matching network (4) comprises one of the following combinations:
a first inductor;
a first capacitor;
the second inductor is connected with the second capacitor in series;
the third inductor is connected with the third capacitor in parallel.
4. The antenna structure according to claim 1, further comprising:
an impedance adjusting circuit connected in series or in parallel with the impedance matching network.
5. The antenna structure according to claim 3, characterized in that the impedance adjusting circuit comprises:
a fourth inductor;
a fourth capacitor in series with the fourth inductor.
6. An antenna structure according to claim 1, characterized in that the slot (3) is filled with a non-metallic dielectric material.
7. A terminal device, comprising: an antenna structure as claimed in any one of claims 1 to 6.
8. The terminal device according to claim 7, further comprising: a metal middle frame;
the first metal arm (1) and the second metal arm (2) are components of the metal middle frame.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811455526.3A CN109449575B (en) | 2018-11-30 | 2018-11-30 | Antenna structure and terminal equipment |
| PCT/CN2019/117066 WO2020108281A1 (en) | 2018-11-30 | 2019-11-11 | Antenna structure and terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811455526.3A CN109449575B (en) | 2018-11-30 | 2018-11-30 | Antenna structure and terminal equipment |
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| CN109449575A CN109449575A (en) | 2019-03-08 |
| CN109449575B true CN109449575B (en) | 2021-03-16 |
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| CN201811455526.3A Active CN109449575B (en) | 2018-11-30 | 2018-11-30 | Antenna structure and terminal equipment |
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Families Citing this family (6)
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| CN109449575B (en) * | 2018-11-30 | 2021-03-16 | 维沃移动通信有限公司 | Antenna structure and terminal equipment |
| CN110518342A (en) * | 2019-09-25 | 2019-11-29 | 南昌黑鲨科技有限公司 | Multi-frequency multi-mode antenna |
| CN111370855B (en) * | 2020-03-20 | 2021-07-20 | 维沃移动通信有限公司 | Antenna structure and electronic equipment |
| CN116130939A (en) * | 2020-03-26 | 2023-05-16 | 华为技术有限公司 | Antenna and terminal equipment |
| CN112002994B (en) * | 2020-08-27 | 2023-12-01 | 维沃移动通信有限公司 | Antenna structure and electronic equipment |
| CN114243265B (en) * | 2020-09-09 | 2024-05-07 | 北京小米移动软件有限公司 | Antenna structure and communication equipment |
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| CN103928753B (en) * | 2014-04-11 | 2016-08-24 | 广东欧珀移动通信有限公司 | A kind of mobile phone and antenna thereof |
| CN203774453U (en) * | 2014-04-11 | 2014-08-13 | 广东欧珀移动通信有限公司 | Mobile phone and antenna thereof |
| CN105789836B (en) * | 2014-12-24 | 2019-06-25 | 联想(北京)有限公司 | Antenna system and mobile terminal |
| CN105789882B (en) * | 2014-12-26 | 2019-05-17 | 比亚迪股份有限公司 | The antenna of mobile terminal and mobile terminal |
| TWI617088B (en) * | 2016-05-23 | 2018-03-01 | 宏碁股份有限公司 | Communication device with metal-frame half-loop antenna element |
| CN106532268B (en) * | 2016-10-31 | 2019-05-17 | 维沃移动通信有限公司 | A kind of antenna structure and mobile terminal |
| CN108767500A (en) * | 2018-05-31 | 2018-11-06 | 维沃移动通信有限公司 | A kind of antenna assembly and mobile terminal |
| CN108808221B (en) * | 2018-06-19 | 2021-05-04 | 深圳市万普拉斯科技有限公司 | Antenna system and mobile terminal |
| CN109449575B (en) * | 2018-11-30 | 2021-03-16 | 维沃移动通信有限公司 | Antenna structure and terminal equipment |
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2018
- 2018-11-30 CN CN201811455526.3A patent/CN109449575B/en active Active
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| CN109449575A (en) | 2019-03-08 |
| WO2020108281A1 (en) | 2020-06-04 |
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