CN108682951A - A kind of low-frequency range small size antenna - Google Patents
A kind of low-frequency range small size antenna Download PDFInfo
- Publication number
- CN108682951A CN108682951A CN201810690236.0A CN201810690236A CN108682951A CN 108682951 A CN108682951 A CN 108682951A CN 201810690236 A CN201810690236 A CN 201810690236A CN 108682951 A CN108682951 A CN 108682951A
- Authority
- CN
- China
- Prior art keywords
- frequency range
- irradiation unit
- low
- small size
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 230000005284 excitation Effects 0.000 claims abstract description 24
- 230000005855 radiation Effects 0.000 claims description 53
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000010137 moulding (plastic) Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- 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
-
- 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
- H01Q5/328—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 between a radiating element and ground
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Landscapes
- Support Of Aerials (AREA)
Abstract
The invention discloses a kind of low-frequency range small size antennas comprising substrate, ground plane, excitation point, irradiation unit, first capacity cell and inductance element；The substrate is printed circuit board；The ground plane, the excitation point, the irradiation unit, the first capacity cell and inductance element setting are on the substrate；First capacity cell connects the excitation point and the irradiation unit head end；The inductance element connects the end of the irradiation unit and the ground plane；The excitation point, the irradiation unit and the ground plane form ring topology.The adjustment of parameter of the present invention by adjusting the length and width of irradiation unit and to inductance member device and capacity cell, it can realize the impedance for changing antenna and resonant frequency, so that the occupied space of antenna is substantially reduced, low-frequency range antenna is realized in the space of very little, requirement difficulty of the equipment design to aerial position is reduced, and the design efficiency of antenna is also greatly improved.
Description
Technical field
The present invention relates to a kind of antenna more particularly to a kind of low-frequency range small size antennas.
Background technology
In a wireless communication device, for emitting, receive radio wave to transmit, exchange the antenna of radio data signal
Device, undoubtedly one of most important component in wireless communication device.
Internet of Things (Internet of Things, abbreviation IOT) is the information carriers such as internet, conventional telecommunications net,
It is that all common objects that can exercise standalone feature can be made to realize the network to interconnect.With the continuous development of technology of Internet of things
With the continuous expansion of market scale, have become one of the technology of world community and the grand strategy of re-invent industry.Lora makees
Be also important one of the means of communication of Internet of Things for a kind of long range communication scheme based on spread spectrum, working frequency range
(433MHz is that China exempts from application transmitting receives frequency to 150MHz to 1GHz, and can be used directly need not manage, in China using most
It is extensive), it is required according to antenna theory, corresponding resonance length λ/4 of antenna resonance branch, each branch substantially needs access to
λ/4 required band requirement length L ≈ wherein λ=C/f wherein C are approximately equal to the light velocity, the required frequency of f respective antennas；Therefore
Low-frequency antenna general radiation arm is longer, in a smaller space the more difficult resonance form formed.Due to answering for Internet of Things
Must include many wireless small-sized terminals with level, the development trend of wireless terminal is miniaturization and portability, therefore to antenna
Design proposes higher challenge, also bigger to antenna space requirement since the more low then wavelength of frequency range is longer, but traditional high-performance
The volume of antenna is larger, cannot meet the miniature requirement of equipment, therefore, now urgently research and develop it is a kind of miniaturization and it is versatile
Antenna is to need to overcome the problems, such as at present.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of low-frequency range small size antennas.
A kind of low-frequency range small size antenna of the present invention include substrate, ground plane, excitation point, irradiation unit, the first capacity cell and
Inductance element；The substrate is printed circuit board；The ground plane, the excitation point, the irradiation unit, the first capacity cell and
The inductance element setting is on the substrate；First capacity cell connects the excitation point and the irradiation unit head end；
The inductance element connects the end of the irradiation unit and the ground plane；The excitation point, the irradiation unit and the ground connection
Face forms ring topology；Wherein the first capacitance can adjust impedance, and preferable resonance is formed by adjusting specific frequency impedance,
Improve aerial radiation effect；Inductance component dramatically increases radiator resonance wavelength, to reduce radiator occupied space.
Preferably, the irradiation unit includes multiple radiation branch, and multiple radiation branch are sequentially connected；Multiple spokes
One side in the substrate is arranged in the part for penetrating branch, and another part of multiple radiation branch is arranged in the substrate
Another side.
Preferably, the line width of the irradiation unit is between 0.8mm to 1.5mm.
Preferably, the substrate may be used in the better plank of high frequency characteristics, such as F4B.
Preferably, further comprise supporting body；The supporting body is arranged on the substrate, with certain height
Degree；The irradiation unit is all arranged on the carrier using metal, such as the molding holders of PE PC ABS；Irradiation unit can be used
The preferable metal material of ductility or flexible circuit board are fixed on holder.
Preferably, it is 5mm-15mm, capacitance that distance a little is encouraged described in the positional distance of second capacity cell
Between 0-4.7pF, wherein 0 is equivalent to open-circuit condition, i.e., it is empty herein to paste.
Preferably, the value of first capacity cell is 0.5-3pF.
Preferably, the value of the inductance element is 0-33nH, wherein 0 is equivalent to short-circuit condition, irradiation unit directly passes through 0 Ω
Resistance is directly connected to the ground plane.
Preferably, multiple radiation branch are placed around the ground plane, increase irradiation unit length in a limited space,
Further reduce antenna occupied space.
Preferably, the ground plane is the multilayer circuit board for arranging transceiver circuit and radio circuit.
Implement a kind of low-frequency range small size antenna of the present invention, there is technique effect beneficial below：
A kind of low-frequency range small size antenna of the present invention is by adjusting the length and width of irradiation unit and to inductance member device and electricity
Hold the adjustment of the parameter of element, so that it may which to realize the impedance and the resonant frequency that change antenna, and its integral ground face can be with
It is the circuit board for carrying transceiver circuit and radio circuit, so that the occupied space of antenna is substantially reduced so that low-frequency range
Antenna can be realized in the space of very little, reduce requirement difficulty of the equipment design to aerial position, and make the design of antenna
Efficiency also greatly improves, and so as to shorten the project cycle, has stronger versatility and practicability.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of perspective view of the embodiment one of low-frequency range small size antenna of the present invention comprising the first capacity cell, the
Two capacity cells, irradiation unit, substrate and inductance element；
Fig. 2 is a kind of front schematic view of the embodiment one of low-frequency range small size antenna shown in FIG. 1；
Fig. 3 is a kind of front schematic view of the embodiment one of low-frequency range small size antenna shown in FIG. 1；
Fig. 4 is a kind of stereogram of the embodiment two of low-frequency range small size antenna of the present invention；
Fig. 5 is inductance element shown in Fig. 2, and inductance value changes antenna resonance and changes contrast schematic diagram；
Fig. 6 is the second capacity cell shown in FIG. 1, and capacitance changes antenna resonance and changes contrast schematic diagram；
Fig. 7 is the first capacity cell shown in FIG. 1, and capacitance changes antenna resonance and changes contrast schematic diagram；
Fig. 8 is irradiation unit shown in FIG. 1, and size changes antenna resonance and changes contrast schematic diagram；
Fig. 9 is substrate shown in FIG. 1, and size changes antenna resonance and changes contrast schematic diagram.
In figure：11, substrate；12, ground plane；13, encourage point；14, irradiation unit；141, the first radiation branch；142, second
Radiation branch；143, third radiation branch；144, the 4th radiation branch；145, the 5th radiation branch；146, the 6th radiation branch；
147, the 7th radiation branch；148, the 8th radiation branch；15, the first capacity cell；16, inductance element；17, the second capacitance member
Part；21, substrate；22, ground plane；23, encourage point；24, irradiation unit；25, the first capacity cell；26, inductance element；27, second
Capacity cell；28, supporting body.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1, Fig. 2 and Fig. 3, in the present embodiment, a kind of low-frequency range small size antenna of the present invention includes base
Plate 11, ground plane 12, excitation point 13, irradiation unit 14, the first capacity cell 15, the second capacity cell 16 and inductance element 17；Institute
It is printed circuit board to state substrate 11；The ground plane 12, the excitation point 13, the irradiation unit 14, first capacity cell
15, second capacity cell 16 and the inductance element 17 are arranged on the substrate 11；First capacity cell 15 connects
Connect 14 head end of the excitation point 13 and the irradiation unit；Second capacity cell 16 connects middle-end and the institute of the irradiation unit 14
State ground plane 12；The inductance element 17 connects end and the ground plane 12 of the irradiation unit 14；The excitation point 13, institute
It states irradiation unit 14 and the ground plane 12 forms ring topology, form the annular of a generation resonance.
The irradiation unit 14 includes the first radiation branch 141, the second radiation branch 142, third radiation branch the 143, the 4th
Radiation branch 144, the 5th radiation branch 145, the 6th radiation branch 146, the 7th radiation branch 147 and the 8th radiation branch 148,
First radiation branch 141, second radiation branch 142, the third radiation branch 143, the 4th radiation branch
144, the 5th radiation branch 145, the 6th radiation branch 146, the 7th radiation branch 147 and the 8th radiation
Branch 148 is sequentially connected, and main function is the length for increasing the irradiation unit 14, and the irradiation unit 14 can be according to practical sky
Between size and frequency is required to decrease or increase, wherein the line width of the irradiation unit 14 is preferred in 0.8mm to 1.5mm；Described
One radiation branch 141, second radiation branch 142, the third radiation branch 143, the 4th radiation branch 144, institute
The 5th radiation branch 145, the 6th radiation branch 146 and the 7th radiation branch 147 is stated to be arranged in the substrate 11
On one side, the another side in the substrate 11 is arranged in the 8th radiation branch 148；Second radiation branch 142, the third
It is radiation branch 143, the 4th radiation branch 144, the 5th radiation branch 145, the 6th radiation branch 146, described
7th radiation branch 147 and the 8th radiation branch 148 are placed around the ground plane 12, the 7th radiation branch 147
It is connected by via with the 8th radiation branch 148, the aperture of the via is preferred for 0.2mm-0.5mm；The irradiation unit
14 material is realized by etching copper material on the substrate 11.
The ground plane 12 can be the multilayer circuit board for arranging transceiver circuit and radio circuit.
The excitation point 13 is arranged bottom sides in the ground plane 12, and one end of the irradiation unit 14 is from the excitation
Point 13 starts then to be connected to the another side of the substrate 11 by via plus end around the left and right sides of the substrate 11, then
The ground plane 12 is extended to from the side of the another side of the substrate 11 to connect, and further reduces space.
For the value of first capacity cell 15 between 0.5pF to 3pF, effect is the resonance location by changing antenna
And impedance, the capacitance of first capacity cell 15 is smaller, and antenna real impedance is smaller.
The value of the inductance element 16 is for 0 between 33nH, and inductance value is bigger, and the antenna resonance the close toward low frequency.
Second capacity cell 17 is arranged in the suitable position of 14 middle-end of the irradiation unit, in the present embodiment,
Described in the positional distance of second capacity cell 17 excitation point 13 distance 5mm-15mm be preferred, capacitance 0 to 4.7pF it
Between, 17 capacitance of the second capacity cell is bigger, and the resonance the close toward low frequency.
The ground plane 12 is arranged to multilayered structure, and as the bearing part of transceiver system, whole transceiver needs
The circuit and chip wanted can design on the ground plane 12, the substrate of antenna system part holding at transceiver system
It carries.
The size of the substrate 11 makes the appropriate adjustments according to specifically used environment：Size with specific reference to practical transceiver system
Circuit of uniting occupies size adjustment, while according to the requirement of antenna efficiency, preferred version 400MHz or more, minimum dimension suggestion width
10mm or more, length 30mm or more, the radiation above headroom of arm section 8mm are preferred；Antenna proposal substrate length near 100MHz
50mm, width 15mm or more.The plank of the substrate 11 is high frequency plank, and in the present embodiment, the plank of the substrate 11 is FR4
Epoxy resin.
Referring to Fig. 4, Fig. 4 is a kind of stereogram of the embodiment two of low-frequency range small size antenna of the present invention.
A kind of low-frequency range small size antenna of the present invention includes substrate 21, ground plane 22, excitation point 23, the 24, first electricity of irradiation unit
Hold element 25, inductance element 26, the second capacity cell 27 and supporting body 28；The substrate 21 is printed circuit board；The ground connection
Face 22, excitation point the 23, first capacity cell 25, the second capacity cell 26, inductance element 27 and supporting body 28 are arranged in the base
On plate 21；The irradiation unit 24 is arranged on the supporting body 28；First capacity cell 25 connects 23 He of the excitation point
The irradiation unit 24；Second capacity cell 26 connects the middle-end and the ground plane 22 of the irradiation unit 24；The inductance
Element 27 connects end and the ground plane 22 of the irradiation unit 24；It the excitation point 23, the irradiation unit 24 and described connects
Ground 22 forms ring topology, forms the annular of a generation resonance.
The supporting body 28 is to have certain height space plastic rubber bracket, can be the molding branch of PC, PE or ABS
Frame；The radiator 24 is the good metal or flexible circuit board of ductility；The supporting body 28 can further reduce use
Space, and further increase antenna efficiency.
Referring to Fig. 5, setting first capacity cell 15 is 1pF capacitances, second capacity cell 17 is 1.5pF electricity
Hold, changing the inductance inductance value of the inductance element 16 can obtain：In the state that other states are constant：The inductance element 16
Sensibility reciprocal it is bigger, antenna resonant frequency is lower, and the wherein corresponding resonant frequency of 1nH, 5.6nH, 9.1nH, 22nH is：
495MHz、445MHz、425MHz、365MHz。
Referring to Fig. 6, setting first capacity cell 15 is 1pF capacitances, the inductance element 16 is 9.1nH inductance,
Changing the capacitance of second capacity cell 17 can obtain：In the case where other conditions are constant：The second capacitance member
The capacitor's capacity of part 17 is bigger, and antenna resonant frequency is lower, wherein 0 (open circuit), 0.5pF, 1.0pF, 2.7pF respectively to it is humorous
Vibration frequency is：552MHz、505MHz、470MHz、402MHz.
Referring to Fig. 7, it is 9.1nH inductance that the inductance element 16, which is arranged, it is 1pF electricity that second capacity cell 17, which is arranged,
Hold, change the capacitance of first capacity cell 15, obtain resonance variation, obviously it can be seen that impedance generation is very big from figure
Variation, the capacitance of first capacity cell 15 is smaller, and circle diagram state more restrains, while resonance can be slightly partially short.
Fig. 8 and Fig. 9 are please referred to, the length of the irradiation unit 14 is changed, antenna resonance can change, and length is shorter, shape
At resonance more toward high frequency direction.A kind of low-frequency range small size antenna of the present invention selects a frequency range testing efficiency to prove antenna
Actual emanations effect exempts to apply frequency range, a kind of low-frequency range small size antenna selection of the present invention since 433MHz belongs at home
433MHz resonance is tested, and the length using the radiator 14 is 45mm, width 5mm, the capacitance of the first capacity cell 15
1pF, 16 capacitance of the second capacity cell are 1.5pF, and 17 inductance value of inductance element is 10nH, and resonant frequency is in 433MHz, test effect
Rate such as Fig. 7.The area of the substrate 11 increases simultaneously, and the overall effect of antenna also can be promoted further, select the substrate 11
Length be 55mm, width 20mm, the irradiation unit 14 is that stay length be 20mm, width 20mm, and antenna resonance is adjusted to
433MHz, testing efficiency such as Fig. 8.
In conclusion a kind of low-frequency range small size antenna of the present invention can pass through the irradiation unit 14 for increasing or reducing
Length and width, and the parameter of first capacity cell, second capacity cell and the inductance element is carried out respectively
Adjustment, may be implemented any frequency range in low-frequency range, can form preferable resonance.
A kind of low-frequency range small size antenna provided in an embodiment of the present invention has technique effect beneficial below：
A kind of low-frequency range small size antenna of the present invention is by adjusting the length and width of irradiation unit and to inductance member device and electricity
Hold the adjustment of the parameter of element, so that it may which to realize the impedance and the resonant frequency that change antenna, and its integral ground face can be with
It is the circuit board for carrying transceiver circuit and radio circuit, so that the occupied space of antenna is substantially reduced so that low-frequency range
Antenna can be realized in the space of very little, reduce requirement difficulty of the equipment design to aerial position, and make the design of antenna
Efficiency also greatly improves, and so as to shorten the project cycle, has stronger versatility and practicability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (11)
1. a kind of low-frequency range small size antenna, it is characterised in that：It includes substrate, ground plane, excitation point, irradiation unit, the first capacitance
Element and inductance element；The substrate is printed circuit board；The ground plane, the excitation point, the irradiation unit, described first
Capacity cell and inductance element setting are on the substrate；First capacity cell connects the excitation point and the spoke
Penetrate the head end in portion；The inductance element connects the end of the irradiation unit and the ground plane；The excitation point, the irradiation unit
Ring topology is formed with the ground plane.
2. a kind of low-frequency range small size antenna according to claim 1, it is characterised in that：The irradiation unit includes multiple radiation
Branch, multiple radiation branch are sequentially connected；The one side in the substrate is arranged in a part for multiple radiation branch, more
The another side in the substrate is arranged in the remainder of a radiation branch.
3. a kind of low-frequency range small size antenna according to claim 2, it is characterised in that：The line width of the irradiation unit exists
Between 0.8mm to 1.5mm.
4. a kind of low-frequency range small size antenna according to claim 1, it is characterised in that：It further comprises supporting body；Institute
Supporting body setting is stated on the substrate, with certain height；The supporting body is the holder of plastic molding, the radiation
Portion is fixed on the supporting body using ductility good metal or flexible circuit board.
5. a kind of low-frequency range small size antenna according to claim 1, it is characterised in that：It further comprises the second capacitance member
Part, the second capacity cell setting on the substrate, connect the middle-end of the irradiation unit and the ground plane.
6. a kind of low-frequency range small size antenna according to claim 5, it is characterised in that：The position of second capacity cell
Distance apart from the excitation point is 5mm-15mm, and for capacitance for 0 between 4.7pF, 0 is open-circuit condition.
7. according to a kind of low-frequency range small size antenna of claim 1-6 any one of them, it is characterised in that：The first capacitance member
The value of part is between 0.5pF to 3pF.
8. according to a kind of low-frequency range small size antenna of claim 1-6 any one of them, it is characterised in that：The inductance element
For value for 0 between 33nH, 0 is short-circuit condition.
9. according to a kind of low-frequency range small size antenna of claim 1-6 any one of them, it is characterised in that：The plank of the substrate
For high frequency plank.
10. a kind of low-frequency range small size antenna according to claim 2 or 3, it is characterised in that：Multiple radiation branch are enclosed
It is placed around the ground plane.
11. according to a kind of low-frequency range small size antenna of claim 1-6 any one of them, it is characterised in that：The ground plane is
Arrange the multilayer circuit board of transceiver circuit and radio circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690236.0A CN108682951A (en) | 2018-06-28 | 2018-06-28 | A kind of low-frequency range small size antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690236.0A CN108682951A (en) | 2018-06-28 | 2018-06-28 | A kind of low-frequency range small size antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108682951A true CN108682951A (en) | 2018-10-19 |
Family
ID=63812672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810690236.0A Pending CN108682951A (en) | 2018-06-28 | 2018-06-28 | A kind of low-frequency range small size antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108682951A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101884134A (en) * | 2007-11-30 | 2010-11-10 | 莱尔德技术股份有限公司 | Antenna assembly and the portable radio communication device that comprises this antenna assembly |
| CN104885296A (en) * | 2013-12-31 | 2015-09-02 | 华为终端有限公司 | Loop antenna and mobile terminal |
| CN105449364A (en) * | 2014-09-26 | 2016-03-30 | 联想(北京)有限公司 | Antenna and mobile terminal |
| CN106505323A (en) * | 2016-12-08 | 2017-03-15 | 上海煜鹏通讯电子股份有限公司 | Low frequency broadband mobile terminal antenna is realized using double resonance |
| CN106785429A (en) * | 2016-12-11 | 2017-05-31 | 杨明 | A kind of method of electric small loop antenna system sending signal in micro wireless sensor |
| CN106848607A (en) * | 2017-01-11 | 2017-06-13 | 瑞声科技（南京）有限公司 | A kind of antenna assembly |
| CN207199821U (en) * | 2017-06-19 | 2018-04-06 | 上海传英信息技术有限公司 | A kind of antenna of mobile terminal and the mobile terminal with the antenna |
| CN208299038U (en) * | 2018-06-28 | 2018-12-28 | 深圳市恒祥通天线技术有限公司 | A kind of low-frequency range small size antenna |
-
2018
- 2018-06-28 CN CN201810690236.0A patent/CN108682951A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101884134A (en) * | 2007-11-30 | 2010-11-10 | 莱尔德技术股份有限公司 | Antenna assembly and the portable radio communication device that comprises this antenna assembly |
| CN104885296A (en) * | 2013-12-31 | 2015-09-02 | 华为终端有限公司 | Loop antenna and mobile terminal |
| CN105449364A (en) * | 2014-09-26 | 2016-03-30 | 联想(北京)有限公司 | Antenna and mobile terminal |
| CN106505323A (en) * | 2016-12-08 | 2017-03-15 | 上海煜鹏通讯电子股份有限公司 | Low frequency broadband mobile terminal antenna is realized using double resonance |
| CN106785429A (en) * | 2016-12-11 | 2017-05-31 | 杨明 | A kind of method of electric small loop antenna system sending signal in micro wireless sensor |
| CN106848607A (en) * | 2017-01-11 | 2017-06-13 | 瑞声科技（南京）有限公司 | A kind of antenna assembly |
| CN207199821U (en) * | 2017-06-19 | 2018-04-06 | 上海传英信息技术有限公司 | A kind of antenna of mobile terminal and the mobile terminal with the antenna |
| CN208299038U (en) * | 2018-06-28 | 2018-12-28 | 深圳市恒祥通天线技术有限公司 | A kind of low-frequency range small size antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11450945B2 (en) | Wireless handheld devices, radiation systems and manufacturing methods | |
| US7924226B2 (en) | Tunable antenna | |
| US11509340B2 (en) | Small antenna apparatus and method for controlling the same | |
| EP4231448A1 (en) | Wireless handheld devices, radiation systems and manufacturing methods | |
| CN106575816A (en) | Slim radiating systems for electronic devices | |
| TWI517498B (en) | Antenna device | |
| CN101740862A (en) | Dipole antenna of RF chip | |
| JP2004519148A (en) | Wireless terminal with multiple antennas | |
| CN109449575A (en) | A kind of antenna structure and terminal device | |
| CN106058429A (en) | Electronic device with antenna | |
| CN105917527A (en) | Multi-band antenna and communication terminal | |
| CN208299038U (en) | A kind of low-frequency range small size antenna | |
| CN104937774B (en) | A kind of antenna assembly and electronic equipment | |
| JP2017188882A (en) | Antenna device | |
| CN112397902B (en) | Antenna, impedance matching method thereof and terminal | |
| CN103326110B (en) | three-dimensional spiral antenna and its application | |
| CN108682951A (en) | A kind of low-frequency range small size antenna | |
| TW201528608A (en) | Wireless communication device | |
| CN110098491A (en) | One kind can configure active integrated antenna array | |
| CN207800893U (en) | Antenna attachment structure and terminal | |
| JPH0652215U (en) | Wideband printed antenna | |
| Mhatre et al. | Electrically small wearable tunable antenna that fits into smartwatch dial | |
| Kakoyiannis et al. | Ground plane considerations for printed monopole antennas integrated into wireless sensor devices | |
| JP2004519158A (en) | Wireless terminal | |
| CN102469390B (en) | Loudspeaker device with antenna structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |