CN107611618A - Leaky antenna - Google Patents
Leaky antenna Download PDFInfo
- Publication number
- CN107611618A CN107611618A CN201610538631.8A CN201610538631A CN107611618A CN 107611618 A CN107611618 A CN 107611618A CN 201610538631 A CN201610538631 A CN 201610538631A CN 107611618 A CN107611618 A CN 107611618A
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- Prior art keywords
- crack
- leaky antenna
- leaky
- antenna
- electric capacity
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- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 239000002184 metal Substances 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The invention discloses a kind of leaky antenna available for moving communicating field.Mobile terminal can use the leaky antenna to realize communication.The leaky antenna includes antenna frame and the first electric capacity；There is crack on the antenna frame；The length in the crack is less than the half-wavelength of radio；First electric capacity is connected across between the crack.Leaky antenna of the present invention realizes remains in that good communication performance when flaw size is less than the operation wavelength of half radio so that smaller, more compact structure and saves material.
Description
Technical field
The present invention relates to communication antenna technical field, particularly a kind of leaky antenna.
Background technology
Leaky antenna, slot antenna or slot antenna can be referred to as again.Slot antenna be generally used for microwave band radar,
In the equipment such as navigation, electronic countermeasure and communication, and because conformal structure can be made and particularly suitable for on high-speed aircraft.
Leaky antenna is made on metal covering, classical method requires that the length in crack should be equal to or more than the operating wave of half of radio
It is long.Thus, leaky antenna of the prior art often limits application scenario because size is larger.Particularly in mobile terminal
Field, for example mobile phone, requirement more and more higher of the people for volume.People need light weight, the mobile terminal device of small volume,
Consequently facilitating carry.
The content of the invention
An object of the present invention is to overcome deficiency of the prior art, there is provided a kind of size is small, communication performance compared with
Good leaky antenna.
To realize object above, the present invention is achieved through the following technical solutions：
The present invention provides a kind of leaky antenna.The leaky antenna includes antenna frame and the first electric capacity；The antenna bone
There is crack on frame；The length in the crack is less than the half-wavelength of radio；First electric capacity is connected across between the crack.
Preferably, the working frequency of the leaky antenna is arranged to adjustable.
Preferably, the leaky antenna also includes the second electric capacity and switch；Second electric capacity be connected across the crack it
Between；The switch connects any one being arranged in first electric capacity and the second electric capacity between the crack.
Preferably, the leaky antenna also includes control module；The control module connects with the switch, to control
State and switch on-off.
Preferably, the switch is electronic switch.
Preferably, the leaky antenna also includes the first inductance；First inductance is connected across between the crack.
Preferably, the leaky antenna also includes the second inductance；Second inductance is connected across between the crack.
Preferably, the width in the crack is less than the quarter-wave of radio.
Preferably, the two opposite sides in the crack are provided with the first current feed department and the second current feed department.
Preferably, the communication frequency of the leaky antenna is 470MHZ.
The present invention also provides a kind of mobile terminal.The mobile terminal include it is foregoing any one of leaky antenna.
Compared with prior art, leaky antenna of the present invention realizes the operation wavelength for being less than half of radio in flaw size
When remain in that good communication performance so that smaller, more compact structure and save material.The work of the leaky antenna
Working frequency can also realize adjustment by the break-make of inductance and electric capacity, so as to wider with bigger universal performance, the scope of application.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram of one of the embodiment of leaky antenna of the present invention.
Fig. 2 is two cross section structure schematic diagram of the embodiment of leaky antenna of the present invention.
Fig. 3 is the cross section structure schematic diagram of the one of which size in the crack of Fig. 2 leaky antenna.
Fig. 4 is the schematic diagram for the voltage standing wave ratio that Fig. 3 leaky antenna obtains after being emulated.
Fig. 5 is the E faces directional diagram that Fig. 3 leaky antenna obtains after being emulated.
Fig. 6 is the H faces directional diagram that Fig. 3 leaky antenna obtains after being emulated.
Fig. 7 is three cross section structure schematic diagram of the embodiment of Fig. 2 leaky antenna.
Fig. 8 is four cross section structure schematic diagram of the embodiment of leaky antenna of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
Embodiment one：
Referring to Fig. 1, it is a kind of schematic cross-section of leaky antenna 100 provided by the invention.The leaky antenna 100
Including antenna frame 1 and crack 2.The 1 electrically conductive medium substrate of antenna frame.The crack 2 is opened in the antenna bone
On frame 1.The crack 2 has the length of L signs as shown.The length L in the crack 2 is less than or original is less than half of wireless tender
Make wavelength.In the present embodiment, the crack 2 is shaped as rectangle.It should be noted that half-wavelength mentioned in the present invention
It is the half-wavelength that the leaky antenna 100 is used for the electromagnetic wave of communication.The crack 2 bridges (both sides for connecting crack 2)
There is electric capacity C.The capacitance of the electric capacity C and specific bridge position are accordingly selected according to working frequency, application conditions.
In the present embodiment, the electric capacity C is connected across 3/5ths length in the crack 2 to the position between 4/5ths length.This
When, the service behaviour of the leaky antenna 100 is preferable.
The present embodiment has carried out corresponding emulation to verify feasibility and actual effect.The present embodiment is described used by emulating
The frequency for the electromagnetic wave that leaky antenna 100 is used to communicate is 470MHZ.Bandwidth of operation is 2MHZ.Metal shell crack be 150 ×
10mm.The a length of 638.3mm of radio wave corresponding to 470MHZ, a length of 319.1mm of half-wave, the length 150mm of crack 2 are also less than four points
One of wavelength.It that is to say, mode be preferably carried out as one kind, in the present embodiment, the length L in the crack 2 is less than four/
One wavelength.
In the present embodiment, the first current feed department A and the second current feed department B is also respectively provided with the both sides in the crack 2.Can be with
It is contemplated that current feed department, also referred to as distributing point, or feed point.The first current feed department A and the second current feed department B setting root
Selected according to institute's working frequency, application conditions.In the present embodiment, the first current feed department A and two current feed department B faces, and
/ 10th length in the crack 2 are arranged on between 1/8th length.It is envisioned that radiofrequency signal is from institute
The first current feed department A and the second current feed department B is stated to burst into both sides of the electromagnetic wave along crack 2 are radiate.
Embodiment two：
Fig. 2 to 6 is referred to, the present embodiment two and the difference of embodiment one are：The crack day that embodiment two provides
The working frequency of line 100 can be adjusted.Specifically, the leaky antenna 100 realizes that working frequency is adjusted using inductance L.It is described
Inductance L is connected across between the crack 2, so that the working frequency of the leaky antenna 100 changes.The inductance L
Inductance value the working frequency that adjusts as needed of size and select.For example, the inductance value of the inductance L can be with 80NH.
Illustrate the effect emulate of leaky antenna 100 of the present invention below in conjunction with the accompanying drawings：Also referring to Fig. 4, it is
Artificial small leaky antenna standing wave pattern of the present invention.The Fig. 4 is shown, when band standing internal wave is less than 3, with a width of 7M.Voltage standing wave ratio
(Voltage Standing Wave Ratio, VSWR), can be also simply referred to as standing-wave ratio.Fig. 5 is artificial small crack of the present invention
Antenna E faces directional diagram.Fig. 5 shows that E faces maximum gain (Gain) is 4.5dB, and 3dB beam angles (Pha) are 118 degree (deg).
Fig. 6 is artificial small leaky antenna H faces directional diagram.Fig. 6 shows that H faces maximum gain is 4.5dB, and 3dB beam angles are 66
Degree.It is to be understood that the face on the far field greatest irradiation direction that E faces refer to electric field vector parallel, H faces are perpendicular
Face.
Embodiment three：
Also referring to Fig. 7, in another implementation (product for example actually produced in batches), the leaky antenna
100 include the first inductance L1 and the second inductance L2.In the present embodiment, the first inductance L1 and the second inductance L2 are bridged respectively
On crack 2.Electric capacity C is arranged between the first inductance L1 and the second inductance L2.
Example IV：
Also referring to Fig. 8, the present embodiment four and the difference of embodiment two are：The crack day that example IV provides
Line 100 realizes that the specific implementation of working frequency regulation is different.The leaky antenna 100 of the present embodiment four switchs K by setting
To control electric capacity C break-make.Specifically, the first electric capacity C1 and the second electric capacity C2 is provided between the crack 2.The K and
Any one connection in one electric capacity C1, the second electric capacity C2, with any one in the first electric capacity C1 of control, the second electric capacity C2
Break-make, so that the leaky antenna 100 can switch between two kinds of different operating frequencies, needed with adapting to different communication
Ask.The switch K can be electronic switch, so as to convenient control.The leaky antenna 100 also includes control module (in figure not
Show).The control module is used for the break-make for controlling the switch K.It is envisioned that the control module can be monolithic
Machine.
The size in the antenna frame 1 marked in diagram and crack 2 is specifically described below：The length of antenna frame 1 is
200mm, width 50mm.The length d in crack 2 is 150mm, and width W is 10mm.The crack 2 is arranged on the antenna frame 1
Middle part to obtain balanced, stable communication performance.
Embodiment five：
The present invention also provides a kind of mobile terminal (not shown).The mobile terminal includes foregoing leaky antenna
100.The mobile terminal can be mobile phone (i.e. mobile phone).The mobile terminal is realized logical by the leaky antenna 100
Letter.The leaky antenna 100 is the metal shell of the closing of mobile terminal.
Preferred embodiments of the present invention are these are only, are not used to limit to protection scope of the present invention, it is any in the present invention
Modification, equivalent substitution or improvement in spirit etc., all cover in scope of the presently claimed invention.
Claims (10)
- A kind of 1. leaky antenna, it is characterised in that：The leaky antenna includes antenna frame and the first electric capacity；The antenna frame It is upper that there is crack；The length in the crack is less than the half-wavelength of radio；First electric capacity is connected across between the crack.
- 2. leaky antenna according to claim 1, it is characterised in that：The working frequency of the leaky antenna is arranged to adjustable Section.
- 3. leaky antenna according to claim 2, it is characterised in that：The leaky antenna also includes the second electric capacity and opened Close；Second electric capacity is connected across between the crack；The switch connection is arranged in first electric capacity and the second electric capacity Any one between the crack.
- 4. leaky antenna according to claim 3, it is characterised in that：The leaky antenna also includes control module；It is described Control module connects with the switch, to be switched on-off described in control.
- 5. leaky antenna according to claim 3, it is characterised in that：The switch is electronic switch.
- 6. leaky antenna according to claim 2, it is characterised in that：The leaky antenna also includes the first inductance；It is described First inductance is connected across between the crack.
- 7. leaky antenna according to claim 6, it is characterised in that：The leaky antenna also includes the second inductance；It is described Second inductance is connected across between the crack.
- 8. leaky antenna according to any one of claim 1 to 7, it is characterised in that：The width in the crack is less than nothing The quarter-wave of line electricity.
- 9. leaky antenna according to any one of claim 1 to 7, it is characterised in that：The two opposite sides in the crack are set It is equipped with the first current feed department and the second current feed department.
- 10. leaky antenna according to claim 1, it is characterised in that：The communication frequency of the leaky antenna is 470MHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538631.8A CN107611618A (en) | 2016-07-11 | 2016-07-11 | Leaky antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538631.8A CN107611618A (en) | 2016-07-11 | 2016-07-11 | Leaky antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107611618A true CN107611618A (en) | 2018-01-19 |
Family
ID=61054731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610538631.8A Pending CN107611618A (en) | 2016-07-11 | 2016-07-11 | Leaky antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107611618A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400427A (en) * | 2018-01-25 | 2018-08-14 | 瑞声科技(新加坡)有限公司 | Antenna system |
| CN109119746A (en) * | 2018-08-23 | 2019-01-01 | 北京小米移动软件有限公司 | Terminal shell and terminal |
| WO2020052395A1 (en) * | 2018-09-13 | 2020-03-19 | 中兴通讯股份有限公司 | Terminal antenna structure and mobile terminal |
| CN111613893A (en) * | 2020-06-10 | 2020-09-01 | 安徽华米信息科技有限公司 | Multi-frequency slot antenna, terminal equipment and antenna design method |
| WO2021249170A1 (en) * | 2020-06-10 | 2021-12-16 | 安徽华米信息科技有限公司 | Multi-frequency slot antenna, terminal device and antenna resonance frequency adjustment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701618A (en) * | 2013-12-04 | 2015-06-10 | 苹果公司 | Electronic device with hybrid inverted-f slot antenna |
| US20160064812A1 (en) * | 2014-09-03 | 2016-03-03 | Apple Inc. | Electronic Device Antenna With Interference Mitigation Circuitry |
| CN105703074A (en) * | 2016-04-08 | 2016-06-22 | 东南大学 | Gate slot ground coaxial feed capacitor loaded phase step impedance tri-polarization half-groove antenna |
| CN105742820A (en) * | 2016-04-08 | 2016-07-06 | 东南大学 | Coaxial feed capacitor-loaded stepped impedance type tri-polarization half-slot antenna |
| CN206148622U (en) * | 2016-07-11 | 2017-05-03 | 上海杰盛康通信工程有限公司 | Slot antenna |
-
2016
- 2016-07-11 CN CN201610538631.8A patent/CN107611618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701618A (en) * | 2013-12-04 | 2015-06-10 | 苹果公司 | Electronic device with hybrid inverted-f slot antenna |
| US20160064812A1 (en) * | 2014-09-03 | 2016-03-03 | Apple Inc. | Electronic Device Antenna With Interference Mitigation Circuitry |
| CN105703074A (en) * | 2016-04-08 | 2016-06-22 | 东南大学 | Gate slot ground coaxial feed capacitor loaded phase step impedance tri-polarization half-groove antenna |
| CN105742820A (en) * | 2016-04-08 | 2016-07-06 | 东南大学 | Coaxial feed capacitor-loaded stepped impedance type tri-polarization half-slot antenna |
| CN206148622U (en) * | 2016-07-11 | 2017-05-03 | 上海杰盛康通信工程有限公司 | Slot antenna |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400427A (en) * | 2018-01-25 | 2018-08-14 | 瑞声科技(新加坡)有限公司 | Antenna system |
| CN109119746A (en) * | 2018-08-23 | 2019-01-01 | 北京小米移动软件有限公司 | Terminal shell and terminal |
| US11043733B2 (en) | 2018-08-23 | 2021-06-22 | Beijing Xiaomi Mobile Software Co., Ltd. | Terminal housing and terminal |
| WO2020052395A1 (en) * | 2018-09-13 | 2020-03-19 | 中兴通讯股份有限公司 | Terminal antenna structure and mobile terminal |
| CN111613893A (en) * | 2020-06-10 | 2020-09-01 | 安徽华米信息科技有限公司 | Multi-frequency slot antenna, terminal equipment and antenna design method |
| WO2021249170A1 (en) * | 2020-06-10 | 2021-12-16 | 安徽华米信息科技有限公司 | Multi-frequency slot antenna, terminal device and antenna resonance frequency adjustment method |
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