CN113241517A - Split-feed type mobile phone antenna - Google Patents
Split-feed type mobile phone antenna Download PDFInfo
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- CN113241517A CN113241517A CN202110507414.3A CN202110507414A CN113241517A CN 113241517 A CN113241517 A CN 113241517A CN 202110507414 A CN202110507414 A CN 202110507414A CN 113241517 A CN113241517 A CN 113241517A
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- 230000005855 radiation Effects 0.000 claims abstract description 58
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 29
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- LAXBNTIAOJWAOP-UHFFFAOYSA-N 2-chlorobiphenyl Chemical compound ClC1=CC=CC=C1C1=CC=CC=C1 LAXBNTIAOJWAOP-UHFFFAOYSA-N 0.000 description 1
- 101710149812 Pyruvate carboxylase 1 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
-
- 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
-
- 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
- H01Q21/00—Antenna arrays or systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Set Structure (AREA)
- Support Of Aerials (AREA)
Abstract
The invention provides a branch feed type mobile phone antenna for realizing multi-frequency coverage in a compact environment, which only divides a feed point on a PCB into a first antenna line and a second antenna line to be connected to a radiation area without a combiner, and has higher antenna efficiency; the first coupling point of the first antenna circuit and the second coupling point of the second antenna circuit are distributed on two sides of the gap, and the distance is short.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a split-feed mobile phone antenna.
Background
With the gradual maturity and popularization of the next generation mobile communication technology 5G, people begin to enjoy the service experience of high speed, low time delay and high reliability brought by the 5G technology, and the 5G mobile phone begins to enter the visual field of users as an important role in the mobile internet wave. The high-speed requirements of people in games and video and audio scenes require that more antennas with more frequency bands than those in the 4G era are plugged in the limited space of a mobile phone; and the current mobile phone pursues the screen occupation ratio, the antenna clearance is extruded, the antenna environment is further deteriorated, and the antenna design difficulty is greatly increased. Under the background, a single antenna needs to cover all frequency bands, and the difficulty of meeting the performance requirements of each frequency band is high.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide a branch feed type mobile phone antenna for realizing multi-frequency coverage in a compact environment.
The invention discloses a separate feeding type mobile phone antenna, which comprises a PCB (printed circuit board), a radiation area and an antenna assembly, wherein a gap is formed between the PCB and the radiation area;
the antenna assembly comprises a feeding point, a first antenna line and a second antenna line, wherein the feeding point is arranged on the PCB; one end of the first antenna circuit is connected with the feed point, the other end of the first antenna circuit is connected with the first coupling point on the radiation area, one end of the second antenna circuit is connected with the feed point, and the other end of the second antenna circuit is connected with the second coupling point on the radiation area;
a slit is arranged on the radiation area, the slit divides the radiation area into a first radiation area and a second radiation area, and the first coupling point and the second coupling point are respectively positioned on the first radiation area and the second radiation area on two sides of the slit; a first grounding point is arranged on the first radiation area, and a second grounding point is arranged on the second radiation area; and LDS/FPC wiring is arranged on the first antenna circuit or the second antenna circuit.
Preferably, the first antenna line and the second antenna line are respectively disposed on two sides of the PCB and overlap each other.
Preferably, the distance between the first ground point and the slit is 5-15mm, and the distance between the second ground point and the slit is 20-45 mm.
Preferably, the distance between the first ground point and the slit is S1The distance between the second grounding point and the slit is S2，S1Is S2/4-S2/2。
Preferably, the size of the slit is 1.0-3.0 mm; the slit is filled with a dielectric.
Preferably, a first matching circuit is arranged on the first antenna circuit, and a second matching circuit is arranged on the second antenna circuit; the first matching circuit comprises a first capacitor, a first inductor and a first switch, and the first capacitor and the first inductor are connected with the feeding point through the first switch; the second matching circuit comprises a second capacitor, a second inductor and a second switch, and the second capacitor and the second inductor are connected with the feeding point through the second switch.
Preferably, the first capacitor and the second capacitor are adjustable capacitors; the first inductor and the second inductor are adjustable inductors.
Preferably, a filter network is further disposed on the first antenna line or the second antenna line, and the filter network includes a single third capacitor and a single third inductor, or a plurality of third capacitors and a plurality of third inductors.
Preferably, the first antenna line is connected with the feeding point through a first connecting piece, and the second antenna line is connected with the feeding point through a second connecting piece; the first connecting piece and the second connecting piece are connected by a thimble or a spring sheet.
Preferably, the radiation area is a mobile phone frame, a mobile phone back shell or an LDS/FPC board.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. compared with the prior art that the antenna is connected to the PCB through the combiner, the antenna does not need the combiner, only the feeding point on the PCB is divided into the first antenna line and the second antenna line to be connected to the radiation area, and the antenna efficiency is higher;
2. the first coupling point of the first antenna circuit and the second coupling point of the second antenna circuit are distributed on two sides of the gap, and the distance is short.
Drawings
Fig. 1 is a first embodiment of a branch feeding type mobile phone antenna provided by the present invention;
fig. 2 is a second embodiment of the branch feeding type mobile phone antenna provided by the present invention.
Wherein: the antenna comprises a main board 1, a radiation area 2, a feed point 3, a first coupling point 4, a second coupling point 5, a LDS/FPC wiring 6, a first matching circuit 7, a second matching circuit 8, a filter network loading point 9, a first grounding point 10, a second grounding point 11 and a slit 12.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure 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 also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The invention discloses a separate feeding type mobile phone antenna which comprises a PCB (printed Circuit Board) 1, a radiation area 2 and an antenna assembly, wherein a gap is arranged between the PCB 1 and the radiation area 2, and a non-conductive medium is filled between the gaps.
The antenna assembly comprises a feeding point 3, a first antenna line and a second antenna line, the feeding point 3 is arranged on the PCB board 1, and the feeding point 3 is divided into the first antenna line and the second antenna line to be connected to the radiation area 2.
Specifically, one end of the first antenna circuit is connected with the feed point 3, the other end of the first antenna circuit is connected with the first coupling point 4 on the radiation area 2, one end of the second antenna circuit is connected with the feed point 3, and the other end of the second antenna circuit is connected with the second coupling point 5 on the radiation area 2, so that two antenna circuits are formed and are respectively used as a low-frequency band and a medium-high frequency band, and the LTE full-band antenna is suitable for the two antenna circuits.
Specifically, the radiation region 2 is provided with a slit 12, the slit 12 is filled with a dielectric medium, the slit 12 divides the radiation region 2 into a first radiation region and a second radiation region, the first coupling point 4 and the second coupling point 5 are respectively located on the first radiation region and the second radiation region on two sides of the slit 12, and the distance between the first coupling point and the second coupling point is short, so that the occupied space of the antenna can be saved, and the antenna is suitable for intelligent terminals such as mobile phones in a compact environment.
The first radiation area is provided with a first grounding point 10, the second radiation area is provided with a second grounding point 11, and the first antenna circuit or the second antenna circuit is provided with an LDS/FPC wiring 6.
Preferably, the first antenna circuit and the second antenna circuit are respectively arranged on two sides of the PCB board 1, so that the space of the PCB board 1 is effectively utilized. In another preferred embodiment, the first antenna circuit and the second antenna circuit are respectively disposed on two sides of the PCB board 1 and are overlapped with each other, so as to better save the wiring position.
Preferably, the distance between the ground point of the middle-high frequency band and the slit 12 is smaller than the distance between the ground point of the low frequency band and the slit 12.
In one embodiment, the first antenna line is in a middle-high frequency band, the second antenna line is in a low frequency band, the distance between the first grounding point 10 and the slit 12 is 5-15mm, the distance between the second grounding point 11 and the slit 12 is 20-45mm, and more preferably, the distance between the first grounding point 10 and the slit 12 is 10mm, and the distance between the second grounding point 11 and the slit 12 is 30 mm.
In another embodiment, the first antenna line is in a low frequency band and the second antenna line is in a medium-high frequency band, the distance between the first grounding point 10 and the slit 12 is 20-45mm, the distance between the second grounding point 11 and the slit 12 is 5-15mm, and more preferably, the distance between the first grounding point 10 and the slit 12 is 30mm, and the distance between the second grounding point 11 and the slit 12 is 10 mm.
Preferably, in the embodiment where the first antenna line is in the middle-high frequency band and the second antenna line is in the low frequency band, the distance between the first grounding point 10 and the slit 12 is S1The distance between the second grounding point 11 and the slit 12 is S2，S1Is S2/4-S2Per 2, more preferably, S1Is S2/3。
Similarly, in the embodiment where the second antenna line is in the middle-high frequency band and the first antenna line is in the low frequency band, the distance between the first grounding point 10 and the slit 12 is S1The distance between the second grounding point 11 and the slit 12 is S2，S2Is S1/4-S1Per 2, more preferably, S2Is S1/3。
It should be noted that the numerical range is only a preferable range and is not a necessary numerical range for realizing the present invention, and numerical values outside the numerical range are still within the range to be protected by the present invention.
Preferably, the size of the slit 12 is 1.0-3.0mm, more preferably 2.0 mm.
Preferably, the first antenna circuit is provided with a first matching circuit 7, the second antenna circuit is provided with a second matching circuit 8, and the first matching circuit 7 and the second matching circuit 8 can adjust the antenna impedance.
The first matching circuit 7 comprises a first capacitor, a first inductor and a first switch, and the first capacitor and the first inductor are connected with the feeding point 3 through the first switch. The second matching circuit 8 comprises a second capacitor, a second inductor and a second switch, and the second capacitor and the second inductor are connected with the feeding point 3 through the second switch.
In one embodiment, the first capacitor and the second capacitor are adjustable capacitors, and the first inductor and the second inductor are adjustable inductors. In another embodiment, an adjustable capacitor is provided in addition to the first capacitor and the second capacitor, and an adjustable inductor is provided in addition to the first inductor and the second inductor.
Preferably, a filter network loading point 9 is further disposed on the first antenna line or the second antenna line, and bandwidth of the medium-high frequency band can be widened by using the filter network.
In one embodiment, the filter network comprises a single third capacitor and a single third inductor. In another embodiment, the filter network comprises a combination of a plurality of third capacitances and a plurality of third inductances.
Preferably, the first antenna circuit is connected with the feeding point 3 through a first connecting piece, the second antenna circuit is connected with the feeding point 3 through a second connecting piece, and the first connecting piece and the second connecting piece are connected by a thimble or a spring sheet.
Preferably, the radiation area 2 is a mobile phone frame, a mobile phone back shell, or an LDS/FPC board.
This is illustrated in detail by two examples.
The first embodiment, see fig. 1, includes a main board (i.e. a PCB board 1), and a metal frame (i.e. a radiation area 2) around the main board, where a slit 12 is disposed on the frame, and divides the radiation area 2 into a first radiation area and a second radiation area, the two antenna radiation areas 2 are respectively disposed on two sides of the slit, and the remote feed ends of the two radiation areas 2 are respectively disposed with a first ground point 10 and a second ground point 11.
The antenna feed point 3 is divided into two paths on the mainboard, one path on the right side is directly connected to a second radiation area on the right side of the gap, and the radiation unit is used as a low-frequency band; one path on the left side is connected to a first radiation area on the left side of the gap through a section of LDS/FPC wiring 6, and the radiation unit is used as a medium-high frequency band. The feed point 3 can feed and receive radio frequency signals, and a first matching circuit 7 and a second matching circuit 8 are respectively arranged on the two feed lines. And a filter network loading point 9 is also arranged on the second radiation area on the right side.
Second embodiment, referring to fig. 2, the structure of this embodiment is similar to that of the first embodiment, except that the first radiation region on the left side of the slot is a low frequency band, the second radiation region on the right side is a medium-high frequency band, and the first radiation region on the left side has a filter network loading point 9.
In the above two embodiments, the radiation area 2 may also be a metal back cover of a mobile phone, or an LDS or FPC.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. A split-feed mobile phone antenna is characterized by comprising a PCB (printed Circuit Board), a radiation area and an antenna assembly, wherein a gap is formed between the PCB and the radiation area;
the antenna assembly comprises a feeding point, a first antenna line and a second antenna line, wherein the feeding point is arranged on the PCB; one end of the first antenna circuit is connected with the feed point, the other end of the first antenna circuit is connected with the first coupling point on the radiation area, one end of the second antenna circuit is connected with the feed point, and the other end of the second antenna circuit is connected with the second coupling point on the radiation area;
a slit is arranged on the radiation area, the slit divides the radiation area into a first radiation area and a second radiation area, and the first coupling point and the second coupling point are respectively positioned on the first radiation area and the second radiation area on two sides of the slit; a first grounding point is arranged on the first radiation area, and a second grounding point is arranged on the second radiation area;
and LDS/FPC wiring is arranged on the first antenna circuit or the second antenna circuit.
2. The shunt-feed mobile phone antenna according to claim 1, wherein the first antenna line and the second antenna line are respectively disposed on two sides of the PCB and overlap each other.
3. The shunt-feed type mobile phone antenna according to claim 1, wherein the distance between the first ground point and the slit is 5-15mm, and the distance between the second ground point and the slit is 20-45 mm.
4. The shunt-fed mobile phone antenna according to claim 3, wherein the distance between the first ground point and the slit is S1The distance between the second grounding point and the slit is S2，S1Is S2/4-S2/2。
5. The shunt-feed type mobile phone antenna according to claim 1, wherein the size of the slit is 1.0-3.0 mm;
the slit is filled with a dielectric.
6. The shunt feed type mobile phone antenna according to claim 1, wherein a first matching circuit is arranged on the first antenna circuit, and a second matching circuit is arranged on the second antenna circuit;
the first matching circuit comprises a first capacitor, a first inductor and a first switch, and the first capacitor and the first inductor are connected with the feeding point through the first switch;
the second matching circuit comprises a second capacitor, a second inductor and a second switch, and the second capacitor and the second inductor are connected with the feeding point through the second switch.
7. The shunt feed type mobile phone antenna according to claim 6, wherein the first capacitor and the second capacitor are adjustable capacitors; the first inductor and the second inductor are adjustable inductors.
8. The shunt-feed mobile phone antenna according to claim 1, wherein a filter network is further disposed on the first antenna line or the second antenna line, and the filter network comprises a single third capacitor and a single third inductor, or a plurality of third capacitors and a plurality of third inductors.
9. The shunt feed type mobile phone antenna according to claim 1, wherein the first antenna line is connected to the feed point through a first connecting member, and the second antenna line is connected to the feed point through a second connecting member;
the first connecting piece and the second connecting piece are connected by a thimble or a spring sheet.
10. The branch feed type mobile phone antenna according to claim 1, wherein the radiation area is a mobile phone frame, a mobile phone back shell, or an LDS/FPC board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507414.3A CN113241517A (en) | 2021-05-10 | 2021-05-10 | Split-feed type mobile phone antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507414.3A CN113241517A (en) | 2021-05-10 | 2021-05-10 | Split-feed type mobile phone antenna |
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| CN113241517A true CN113241517A (en) | 2021-08-10 |
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| CN202110507414.3A Pending CN113241517A (en) | 2021-05-10 | 2021-05-10 | Split-feed type mobile phone antenna |
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| CN111628298A (en) * | 2019-02-27 | 2020-09-04 | 华为技术有限公司 | Integrated antenna and electronic device |
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2021
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| CN103682620A (en) * | 2012-09-25 | 2014-03-26 | 宏达国际电子股份有限公司 | Mobile device |
| CN105227198A (en) * | 2014-06-20 | 2016-01-06 | 展讯通信（上海）有限公司 | A kind of antenna system and mobile terminal |
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Application publication date: 20210810 |