CN104854756B - Antenna assembly - Google Patents
Antenna assembly Download PDFInfo
- Publication number
- CN104854756B CN104854756B CN201380065801.XA CN201380065801A CN104854756B CN 104854756 B CN104854756 B CN 104854756B CN 201380065801 A CN201380065801 A CN 201380065801A CN 104854756 B CN104854756 B CN 104854756B
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- extension
- auxiliary antenna
- antenna portion
- unit
- main body
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- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000011888 foil Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 239000010409 thin film Substances 0.000 claims abstract description 9
- 230000003071 parasitic effect Effects 0.000 claims description 36
- 239000010408 film Substances 0.000 claims description 11
- 230000005855 radiation Effects 0.000 description 12
- 238000005452 bending Methods 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000011889 copper foil Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000003989 dielectric material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000368 destabilizing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
-
- 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
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
- H01Q5/364—Creating multiple current paths
- H01Q5/371—Branching current paths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
Abstract
The present invention provides a kind of antenna assembly, and it can neatly adjust each resonant frequency of multi-resonant, and can realize miniaturization and slimming.The antenna assembly of the present invention possesses insulative substrate main body (2)；And form the ground plane (GND) of pattern with metal foil respectively in base main body, 1st unit (3) and the 2nd unit (4), Unit the 1st is provided with distributing point (FP) in the cardinal extremity for being configured at ground plane side and extended, midway is connected with the antenna element (AT) of dielectric antenna, and the 1st auxiliary antenna portion (6) is connected with front end, Unit the 2nd is connected to base end side and the extension of Unit the 1st, midway is connected with passive element (P2), and, the 2nd auxiliary antenna portion (7) is connected with front end, 1st auxiliary antenna portion and the 2nd auxiliary antenna portion are formed and turned back by flexible thin film's conductor, and in the top of base main body, interval extends between the base main body.
Description
Technical field
The present invention relates to a kind of antenna assembly of achievable multi-resonant.
Background technology
In the past, in a communications device, in order that the resonant frequency multi-resonant of antenna, propose one kind possess radiation electrode and
The antenna of electrolyte blocks, or used switch and the antenna assembly in control voltage source.For example, as showing using electrolyte blocks
There is technology, a kind of combined antenna is proposed in patent document 1, by forming radiation electrode on resin-formed body, and utilize
Binding agent makes electrolyte blocks integrated, so as to obtain high efficiency.
Also, as the prior art for having used switch and control voltage source, propose that a kind of day is traditional thread binding in patent document 2
Put, the antenna assembly possesses：1st radiation electrode；2nd radiation electrode；And switch, be situated between located at the 1st radiation electrode middle part with
Between the base end part of 2nd radiation electrode, for being connected or disconnected with the 2nd radiation electrode and the 1st radiation electrode.
Patent document 1：Japanese Patent Publication 2010-81000 publications
Patent document 2：Japanese Patent Publication 2010-166287 publications
However, problems with is still suffered from the above prior art.
The electricity of excitation radiation electrode is used in the technology using electrolyte blocks i.e., as described in Patent Document 1
Medium block, the design of electrolyte blocks, radiation electrode pattern etc. is needed in each equipment, is existed according to the design condition and day
Line degradation or the increased unfavorable condition of destabilizing factor.Also, because radiation electrode is formed at the table of resin-formed body
Face, it is therefore desirable to radiation electrode pattern is designed on resin-formed body, and according to the communication equipment installed or its purposes needs
Antenna Design, mold design, so as to cause cost to be significantly increased.In addition, make electrolyte blocks and resin forming using binding agent
Body integration, therefore exist in addition to the Q values of binding agent, always according to bonding condition (thickness of binding agent, bond area etc.)
And antenna performance is deteriorated or the increased unfavorable condition of destabilizing factor.Also, in using as described in Patent Document 2
Switch, in the case of the antenna assembly in control voltage source, due to carrying out the switching of resonant frequency with switch, it is therefore desirable to control
The structure of voltage source and feedback circuit etc., existing complicates the antenna structure in each equipment, no design freedom, easily
Tested rotating platform the problem of becoming difficulty.
The content of the invention
The present invention is to complete in view of the above problems, its object is to provide a kind of antenna assembly, the antenna assembly energy
Enough each resonant frequencies for neatly adjusting multi-resonant, and inexpensively and can readily insure that corresponding to each purposes and equipment
Antenna performance, and can realize miniaturization and slimming.
In order to solve described problem, the present invention uses following structure.That is, the antenna assembly of the 1st invention possesses：Insulating properties base
Plate main body；And form ground plane, Unit the 1st and the Unit the 2nd of pattern with metal foil respectively in the base main body, the described 1st
Unit is provided with distributing point in the cardinal extremity for being configured at the ground plane side and extended, and is connected with the antenna element of dielectric antenna halfway
Part, also, the 1st auxiliary antenna portion is connected with front end, Unit the 2nd is connected to base end side and the extension of Unit the 1st, midway
Passive element is connected with, also, the 2nd auxiliary antenna portion is connected with front end, the 1st auxiliary antenna portion and the 2nd auxiliary
Antenna part is formed and turned back by flexible thin film's conductor, and in the top of the base main body, and between being spaced apart of the base main body
Every extension.
In the antenna assembly, the 1st auxiliary antenna portion and the 2nd auxiliary antenna portion are formed and turned back by flexible thin film's conductor,
And interval extends between the top of base main body, with the base main body, therefore by effectively utilizing the 1st auxiliary antenna
Ground plane in portion, the 2nd auxiliary antenna portion and base main body, as to desired resonant frequency will not self-resonance load cell
Caused parasitic capacitance between the antenna element and each unit of part, so as to realize multi-resonant.Also, the 1st auxiliary
Antenna part and the 2nd auxiliary antenna portion are formed and turned back by flexible thin film's conductor, therefore can suitably change the 1st auxiliary antenna
The interval in portion, the 2nd auxiliary antenna portion and base main body, in the case that the space change at position is set, or it must incite somebody to action
In the case of 1st auxiliary antenna portion, the bending configuration of the 2nd auxiliary antenna portion, the configuration of institute's mounting frame also can be neatly tackled
Condition.Especially, antenna element and passive element are not installed in the 1st auxiliary antenna portion, the 2nd auxiliary antenna portion, but by described in
Element is only installed on base main body side, so as to substantially ensure that the flexibility in the 1st auxiliary antenna portion, the 2nd auxiliary antenna portion.And
And by selecting antenna element and each passive element, each resonant frequency and impedance can be neatly adjusted, and can obtain can be real
The now antenna assembly of double resonance corresponding with purposes and equipment, design condition.In addition, can be with the 1st auxiliary antenna portion, the 2nd
The extension shape of auxiliary antenna portion and each unit in the plane of base main body is designed, with using conventional dielectric
Block is compared with the situation of resin-formed body etc. can realize slimming, and by being selected as the antenna element of dielectric antenna
Part, miniaturization and high performance can be realized.Also, without the caused cost by mould, design alteration etc., it can realize
Cost degradation.
The antenna assembly of 2nd invention is characterised by, in the 1st invention, the 1st auxiliary antenna portion and described 2nd auxiliary
Help antenna part and pattern is formed with metal foil on insulating properties film.That is, in the antenna assembly, due to the 1st auxiliary antenna portion and
2nd auxiliary antenna portion forms pattern on insulating properties film with metal foil, therefore can obtain higher flexibility, also, conduct
The material of insulating properties film, the insulating properties film of high-k is properly selected, so as to obtain the 1st auxiliary antenna portion, the 2nd
The pattern in auxiliary antenna portion shortens effect, also, also copes with the relatively low situation of desired frequency band or require further small
The situation of type.In addition, general flexible printing substrate can be utilized, it is capable of the reduction of cost of implementation.
The antenna assembly of 3rd invention is characterised by, in the 1st or the 2nd invention, the 1st auxiliary antenna portion and described
The open end in the 2nd auxiliary antenna portion configures in the opposite direction each other.That is, in the antenna assembly, due to the 1st auxiliary antenna portion and
The open end in 2 auxiliary antenna portions configures in the opposite direction each other, therefore the higher part of mutual impedance is each opposite direction, no
It can only suppress to couple, and caused parasitic capacitance each other can be effectively utilized.
The antenna assembly of 4th invention is characterised by, in any one of the 1st to the 3rd invention, the 1st auxiliary day
The open end in line portion configures in the opposite direction relative to the open end of the antenna element.That is, in the antenna assembly, due to the 1st
The open end in auxiliary antenna portion configures in the opposite direction relative to the open end of antenna element, therefore the part that mutual impedance is higher
It opposite direction towards each other, can not only suppress to couple, and caused parasitic capacitance each other can be effectively utilized.
The antenna assembly of 5th invention is characterised by, in any one of the 1st to the 4th invention, in the described 1st auxiliary
Distance piece is provided between antenna part and the 2nd auxiliary antenna portion and the base main body.That is, in the antenna assembly, by
In being provided with distance piece between the 1st auxiliary antenna portion and the 2nd auxiliary antenna portion and base main body, therefore by being set as providing
The distance piece of thickness and can be by the interval holding of the 1st auxiliary antenna portion, the 2nd auxiliary antenna portion and base main body to be constant.And
And by the way that the material of distance piece is set into high dielectric material, therefore the 1st auxiliary antenna portion, the 2nd auxiliary antenna portion can be obtained
Pattern shortens effect.In addition, impact absorbing effect can be obtained by using rubber elastomeric material.
The antenna assembly of 6th invention is characterised by possessing Unit the 3rd in any one of the 1st to the 5th invention, should
Unit the 3rd forms pattern in the base main body with metal foil, and extends from the cardinal extremity of Unit the 1st, and front end exists
Position away from being connected to the ground plane from the distributing point, Unit the 1st has：1st extension, it is described being configured at
The cardinal extremity of ground plane side is provided with distributing point, and extends to from the direction that the ground plane leaves；And the 2nd extension, from this
The front end of 1st extension extends to along the direction of the ground plane, and Unit the 2nd has：3rd extension, it is single from the described 1st
The cardinal extremity of member extends to from the direction that the 1st extension leaves；And the 4th extension, from the front end of the 3rd extension along described
1st extension extends to from the direction that the ground plane leaves, and the 1st auxiliary antenna portion has：5th extension, from described
The front end of 2nd extension extends to the top of the base main body；And the 6th extension, from the front end of the 5th extension along described
2nd extension extends, and the 2nd auxiliary antenna portion has：7th extension, from the front end of the 4th extension to the substrate
The top extension of main body；And the 8th extension, extend from the front end of the 7th extension along the 6th extension, the 2nd extension
Portion is extended in a manner of it can produce the parasitic capacitance between the ground plane relative to the ground plane interval, and
Midway is provided with the antenna element.That is, in the antenna assembly, can be produced by the configuration of above-mentioned each extension：1st
Parasitic capacitance between extension and the 4th extension；1st auxiliary antenna portion (mainly the 6th extension) is between the 7th extension
Parasitic capacitance；Parasitic capacitance of the 1st auxiliary antenna portion (mainly the 6th extension) between the 8th extension；1st auxiliary day
Parasitic capacitance of the line portion (mainly the 6th extension) between antenna element；1st auxiliary antenna portion (mainly the 6th extension)
Parasitic capacitance between ground plane；Parasitic capacitance between antenna element and ground plane；Between 7th extension and ground plane
Parasitic capacitance；And the 8th parasitic capacitance between extension and ground plane.
Following effect can be played according to the present invention.That is, according to the antenna assembly of the present invention, the 1st auxiliary antenna portion and the 2nd
Auxiliary antenna portion is formed and is folded back by flexible thin film's conductor, and in the base provided with each unit, antenna element and passive element
Interval extends between the top of plate main body, with the base main body, therefore can neatly adjust each resonant frequency, and can
Double resonance corresponding with design condition is realized, and miniaturization and high performance can be realized.So as to antenna assembly of the invention
Multi-resonant corresponding with multiple use and equipment can be easily realized, and space saving can be realized and improve distribution and set
The free degree put.
Brief description of the drawings
Fig. 1 is in an embodiment of antenna assembly involved in the present invention, is represented the 1st auxiliary antenna portion and the 2nd
The top view of the state (a) of auxiliary antenna portion expansion and the major part for the state (b) turned back.
Fig. 2 is the side view for the major part for representing antenna assembly in the present embodiment.
Fig. 3 is to represent the stereogram (a) of antenna element, top view (b), front view (c) in the present embodiment and face upward
View (d).
Fig. 4 is the wiring diagram for representing the caused parasitic capacitance in antenna assembly in the present embodiment.
Fig. 5 is in the embodiment of antenna assembly involved in the present invention, represents VSWR characteristic (voltages during double resonance
Standing-wave ratio) curve map.
Fig. 6 is the antenna pattern that 900MHz frequency bands are represented in the embodiment of antenna assembly involved in the present invention
Curve map.
Fig. 7 is the antenna pattern that 1800MHz frequency bands are represented in the embodiment of antenna assembly involved in the present invention
Curve map.
Fig. 8 is in the embodiment of antenna assembly involved in the present invention, represents bending configuration and by the thickness of distance piece
It is set to 6mm situation (a), bending configuration and the thickness of distance piece is set to 3mm situation (b), arranged perpendicular and by distance piece
Thickness be set to 6mm situation (c) antenna assembly major part side view.
Fig. 9 is in the embodiment of antenna assembly involved in the present invention, represents bending configuration and by the thickness of distance piece
It is set to 6mm situation, bending configuration and the thickness of distance piece is set to 3mm situation, arranged perpendicular and by the thickness of distance piece
It is set to the 1st resonant frequency of 6mm situation and the curve map of the 2nd resonant frequency.
Figure 10 is the major part when framework for representing antenna assembly is cut off in other examples of present embodiment
Side view.
Embodiment
Hereinafter, referring to figs. 1 to Fig. 5, an embodiment of antenna assembly involved in the present invention is illustrated.
As shown in Figures 1 and 2, the antenna assembly 1 in present embodiment possesses insulative substrate main body 2 and in substrate master
Form ground plane GND, the 1st unit 3, the 2nd unit 4 and the 3rd unit 5 of pattern on body 2 with metal foils such as copper foils respectively.In addition,
The installation region of RF circuit blocks etc. is provided with ground plane GND.
Above-mentioned 1st unit 3 is provided with distributing point FP in the cardinal extremity for being configured at ground plane GND side and extended, and is connected with halfway
The antenna element AT and the 1st passive element P1 of dielectric antenna, and the 1st auxiliary antenna portion 6 is connected with front end.Above-mentioned 2nd
Unit 4 is connected to the base end side of the 1st unit 3 and extension, is connected with the 2nd passive element P2 halfway, and be connected with the 2nd in front end
Auxiliary antenna portion 7.Above-mentioned 3rd unit 5 extends from the cardinal extremity of the 1st unit 3, and front end positions away from connecting from distributing point FP
In ground plane GND.Also, it is connected with the 3rd passive element P3 in the midway of the 3rd unit 5.
As shown in Fig. 1 (b) and Fig. 2, above-mentioned 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 are by flexible thin film's conductor
Formed and turned back, and interval extends between the top of base main body 2, with the base main body 2.Also, aid in day the 1st
Distance piece 8 is provided between auxiliary antenna portion 7 of line portion 6 and the 2nd and base main body 2.
These the 1st auxiliary antenna portions 6 and the 2nd auxiliary antenna portion 7 are formed on insulating properties film 9 with metal foils such as copper foils to scheme
Case.It is auxiliary using composition the 1st is provided between the two layers of polyimide film of insulating properties film 9 is formed in the present embodiment
Help the flexible printing substrate of the copper foil in the auxiliary antenna portion 7 of antenna part 6 and the 2nd.In addition, the 1st auxiliary antenna portion the 6 and the 2nd aids in day
Line portion 7 is connected to the 1st unit 3 and the 2nd unit 4 by welding, but can also use other attachment structures.
Above-mentioned 1st unit 3 has：1st extension E1, the cardinal extremity for being configured at ground plane GND side is provided with distributing point FP,
And extend to from the direction that ground plane GND leaves；And the 2nd extension E2, from the 1st extension E1 front end to along ground plane
GND direction (opposed ground plane GND end edge) extension.
Above-mentioned 2nd unit 4 has：3rd extension E3, from the cardinal extremity of the 1st unit 3 to from the side that the 1st extension E1 leaves
To extension；And the 4th extension E4, from the 3rd extension E3 front end along the 1st extension E1 to from the side that ground plane GND leaves
To extension.
Above-mentioned 1st auxiliary antenna portion 6 has：5th extension E5, from the 2nd extension E2 front end to the upper of base main body 2
Fang Yanshen；And the 6th extension E6, extend from the 5th extension E5 front end along the 2nd extension E2.
Above-mentioned 2nd auxiliary antenna portion 7 has：7th extension E7, from the 4th extension E4 front end to the upper of base main body 2
Fang Yanshen；And the 8th extension E8, extend from the 7th extension E7 front end along the 6th extension E6.
Above-mentioned 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 are set as line width than the 1st unit 3 and the 2nd unit 4
It is wide.Especially, the 6th extension E6 and the 7th extension E7 is formed as wide cut, not only increases antenna occupied area, and effective land productivity
It is broadband so as to realize with caused parasitic capacitance between antenna element AT and each unit.Additionally, it is preferred that it will correspond to low humorous
The auxiliary antenna portion of vibration frequency is configured at inner side (close to antenna element AT side).I.e., in the present embodiment, than corresponding
In high frequency band be the 2nd frequency f2 the 2nd auxiliary antenna portion 7 closer to inner side, be configured with corresponding to i.e. the 1st frequency f1's of low-frequency band
1st auxiliary antenna portion 6.Thereby, it is possible to make to correspond to low-frequency band i.e. the 1st frequency f1 the 1st auxiliary antenna portion 6 close to antenna element
AT, and make it away from RF circuit blocks or framework for being arranged on ground plane GND etc..
Above-mentioned 2nd extension E2 is in a manner of it can produce the parasitic capacitance between ground plane GND relative to ground plane
GND intervals extend, and midway is provided with above-mentioned antenna element AT.In addition, above-mentioned 3rd unit 5 is relative to the 1st extension
E1 extends to the opposite side of the 2nd unit 4 and positions away from being connected to ground plane in midway bending, and from the 1st extension E1
GND。
The open end in above-mentioned 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 configures in the opposite direction each other.Also, the 1st is auxiliary
Help the open end of antenna part 6 relative to antenna element AT open end (end of the 2nd extension E2 front) in the opposite direction
Configuration.
Aforesaid substrate main body 2 is in general printed base plate, in the present embodiment using the glass by rectangular shape
The main body of the printed base plate of the compositions such as epoxy resin.
Above-mentioned distributing point FP is connected to the distributing point of high-frequency circuit (omitting diagram) via power supply components such as coaxial cables.
As the power supply component, it can use connector, the contacts such as coaxial cable, socket that there is the attachment structure of plate spring shape, contact
Attachment structure with pin probe shape or aciculiform shape, utilize the various structures such as the attachment structure of welding pad.For example, make
By the use of coaxial cable as in the case of power supply component, in the ground wire of ground plane GND base end side connecting coaxial cable, and together
The cored wire of shaft cable is connected to distributing point FP.
Above-mentioned antenna element AT be to desired resonant frequency will not self-resonance load elements, for example, as shown in Figure 3
For in the antenna component of conductive pattern 102 of the surface of the dielectrics such as ceramics 101 formed with Ag etc..Antenna element AT is according to humorous
The setting of vibration frequency etc. can select the mutually different elements such as its length, width, conductive pattern 102, and can also select
Identical element.The passive element P3 of above-mentioned 1st passive element P1~the 3rd can use such as inductor, capacitor or resistance.
Between 1st unit 3, the 2nd unit 4, the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 are that can produce
The mode of each parasitic capacitance and the parasitic capacitance between ground plane GND is spaced apart interval extension.That is, as shown in Figure 4 can
Produce：Parasitic capacitance Ca between 1st extension E1 and the 4th extension E4；(mainly the 6th extension of 1st auxiliary antenna portion 6
E6) the parasitic capacitance Cb between the 7th extension E7；1st auxiliary antenna portion 6 (mainly the 6th extension E6) and the 8th extension
Parasitic capacitance Cc between E8；Parasitism electricity of the 1st auxiliary antenna portion 6 (mainly the 6th extension E6) between antenna element AT
Hold Cd；Parasitic capacitance Ce of the 1st auxiliary antenna portion 6 (mainly the 6th extension E6) between ground plane GND；Antenna element AT
The parasitic capacitance Cg between parasitic capacitance Cf, the 7th extension E7 and ground plane GND between ground plane GND；8th extension
Parasitic capacitance Ch between E8 and ground plane GND.
Above-mentioned distance piece 8 is the cuboid or plate body formed such as the resin as ABS, passes through insulating properties binding agent or double
Face seal etc. and set.Set location on the thickness and base main body 2 of the distance piece 8 is according to the setting unit of antenna assembly 1
Depending on the space of position and antenna element AT installation site etc..In the present embodiment, as shown in Fig. 2 distance piece 8 is from substrate
The end edge of main body 2 positions away from being arranged between antenna element AT and ground plane GND, the 1st auxiliary antenna portion the 6 and the 2nd auxiliary
Antenna part 7 is when turning back as the state of bending configuration.In addition, the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 are via insulation
Property film 9 is simultaneously fixed on the upper surface of distance piece 8 by binding agent or two-sided tape etc..
Then, the resonant frequency in the antenna assembly 1 of present embodiment is illustrated with reference to figure 5.
As shown in figure 5, in the antenna assembly 1 of present embodiment, with the 1st resonant frequency f1 and the 2nd resonant frequency f2 this
Two resonant frequencies and by multi-resonant.Above-mentioned 1st resonant frequency f1 be lower band in two resonant frequencies (for example,
900MHz frequency bands) resonant frequency, it is by antenna element AT, the 1st unit 3, the length in the 1st auxiliary antenna portion 6, each parasitic capacitance
Depending on Ca~Cf.Also, above-mentioned 2nd resonant frequency f2 is high frequency band (for example, 1800MHz frequency bands) in two resonant frequencies
Resonant frequency, its by the 1st unit 3, the 2nd unit 4, the length in the 2nd auxiliary antenna portion 7, parasitic capacitance Ca, Cb, Cc, Cg, Ch and
It is fixed.
In addition, the 1st resonant frequency f1 final adjustment can be neatly adjusted using the 1st passive element P1.
Also, the 2nd resonant frequency f2 final adjustment can be neatly adjusted using the 2nd passive element P2.
Also, depending on the impedance under the 1st resonant frequency f1 is by each parasitic capacitance Ca~Cf.Also, under the 2nd resonant frequency f2
Impedance by each parasitic capacitance Ca, Cb, Cc, Cg, Ch depending on.In addition, for each resonant frequency, the 3rd passive element P3 energy is utilized
It is enough neatly to carry out final impedance adjustment.
So as to which the 1st resonant frequency f1 is mainly adjusted by the part surrounded in Fig. 4 with dotted line A1.Also, the 2nd resonance frequency
Rate f2 is mainly adjusted by the part surrounded in Fig. 4 with dotted line A2.Therefore, in antenna action, not merely with antenna element AT
And each passive element P1~P3, the parasitic capacitance gone back between the parasitic capacitance between range site, each unit and ground plane GND,
1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 and each unit or ground plane GND parasitic capacitance, so as to realize antenna
Occupy the miniaturization in region.
Therefore, in the antenna assembly 1 of present embodiment, because the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 are by scratching
Property thin film conductor formed and turned back, and interval extends between the top of base main body 2, with the base main body 2, therefore logical
Cross the 1st auxiliary antenna portion 6 that effectively utilizes and the 2nd auxiliary antenna portion 7 with the ground plane GND in base main body 2, as to wishing
The resonant frequency of prestige will not self-resonance load elements antenna element AT and each unit between caused parasitic capacitance, so as to
Enough realize multi-resonant.
Also, because the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 are formed and turned back by flexible thin film's conductor, therefore
The 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 and the interval of base main body 2 can be suitably changed, even in setting position
Gap change in the case of, or the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 must be bent to the situation of configuration
Under, it also can neatly tackle the configuration condition of institute's mounting frame.Especially, in the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7
In, antenna element AT or passive element are not installed, and it is only installed on to the side of base main body 2, so as to substantially ensure that the 1st is auxiliary
Help the flexibility in the auxiliary antenna portion 7 of antenna part 6 and the 2nd.
Also, by selecting antenna element AT and each passive element P1~P3, can neatly adjust each resonant frequency and
Impedance, and the antenna assembly that double resonance corresponding with purposes and equipment, design condition can be achieved can be obtained.In addition, can
Carried out with the 1st auxiliary antenna portion 6 and the extension shape of the 2nd auxiliary antenna portion 7 and each unit in the plane of base main body 2
Design, thus with it is conventional use the situation of electrolyte blocks and resin-formed body etc. compared with can realize slimming, and pass through
The antenna element AT of dielectric antenna is selected as, miniaturization and high performance can be realized.Also, without by mould, design
Change etc. and caused cost, low cost can be realized.
Also, because the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 form figure on insulating properties film by metal foil
Case, therefore higher flexibility can be obtained, also, as the material of insulating properties film, high-k can be properly selected
Material, so as to obtain the pattern in the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 shorten effect, further, it is possible to tackle
The situation that the relatively low situation of desired frequency band or requirement further minimize.In addition, general flexible printing base can be utilized
Plate, it is capable of the reduction of cost of implementation.
Also, because the open end in the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 configures in the opposite direction each other, therefore
The higher part of mutual impedance can not only suppress to couple, and can effectively utilize each other each other in opposite direction
Between caused parasitic capacitance.In addition, the open end in the 1st auxiliary antenna portion 6 relative to antenna element AT open end towards negative side
To configuration, therefore the higher part of mutual impedance can not only suppress to couple each other in opposite direction, and can be effectively
Utilize caused parasitic capacitance among each other.
Also, due to being provided with distance piece between the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 and base main body 2
8, therefore by being set as the distance piece 8 of specific thickness and can be by the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 and substrate
The interval holding of main body 2 is constant.Also, the material of distance piece 8 is set to high dielectric material, therefore the 1st auxiliary can be obtained
The pattern in the auxiliary antenna portion 7 of antenna part 6 and the 2nd shortens effect.In addition, it can also be obtained by using rubber elastomeric material
Impact absorbing effect.
Embodiment
Then, in the embodiment of the antenna assembly of actual fabrication present embodiment, reference picture 5 to Fig. 9 is relevant to illustrate
VSWR characteristics (voltage standing wave ratio), antenna pattern during double resonance under each resonant frequency and change distance piece condition
The measurement result of situation.
In addition, in each passive element, the 1st passive element P1：10nH, the 2nd passive element P2：1.5nH, the 3rd passive yuan
Part P3：10nH has used inductor.Also, the thickness of distance piece 8 is set to 6mm.As shown in figure 5, in embodiments of the invention
In, the 1st resonant frequency f1：927.13MHz、VSWR：1.17th, bandwidth (V.S.W.R≤3)：82.9MHz, the 2nd resonant frequency f2：
1848.97MHz、VSWR：1.28th, bandwidth (V.S.W.R≤3)：593.1MHz.
Also, on the measure of antenna pattern, by the 1st extension E1 bearing of trend i.e. towards ground plane GND side
To X-direction is set to, the opposite direction of the 2nd extension E2 bearing of trend is set to Y-direction, by relative to the surface of base main body 2
Vertical direction is set to Z-direction.Determine and now involve power gain relative to the vertically polarized wave in YZ faces, horizontal polarization.
Fig. 6 is the antenna pattern (YZ faces) under the 1st resonant frequency f1 of 900MHz frequency bands, and average power gain is
0.4dBi.Fig. 7 is the antenna pattern (YZ faces) under the 2nd resonant frequency f2 of 1800MHz frequency bands, average power gain for-
0.4dBi。
Then, shown in Fig. 8 for resonant frequency to the configuration condition in the 1st auxiliary antenna portion and the 2nd auxiliary antenna portion
Influence the result confirmed.Wherein, in bending configuration and the thickness of distance piece 8 is set to 6mm situation (Fig. 8 (a)), curved
Song configuration and the thickness of distance piece 8 is set to 3mm situation (Fig. 8 (b)), arranged perpendicular and is set to the thickness of distance piece 8
In 6mm situation (Fig. 8 (c)), the change to the 1st resonant frequency f1 and the 2nd resonant frequency f2 respectively is determined and compared
Compared with.In addition, above-mentioned bending is configured to following situation, i.e. makes the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 with from substrate master
It is above-mentioned to hang down along the situation of the upper surface setting of distance piece 8 after the state extension that adipping is bent for the time being upward of body 2
Directly it is configured to following situation, i.e. make the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 from base main body 2 upward for the time being to vertical
Nogata is to situation about after extension, being set along the upper surface of distance piece 8.
Also, under in arranged perpendicular and the thickness of distance piece 8 is set into 6mm situation (Fig. 8 (c)), distance piece 8 is set
Put near the end edge of base main body 2, and the right side of antenna element AT in Fig. 1.From the result, relative to respectively matching somebody with somebody
Put, resonant frequency is controlled as ± 1% or so small change in 900/1800MHz frequency bands, relative to the 1st auxiliary antenna
The frequency variation of the configuration in portion and the 2nd auxiliary antenna portion is smaller, and easily tackles each equipment installed.
In addition, the present invention is not limited to above-mentioned embodiment and embodiment, without departing from the spirit and scope of the present invention
Various changes can be added.
For example, in the above-described embodiment, antenna element is provided with the 2nd extension, but can also be set in the 4th extension
Put antenna element.In this case, the length of Unit the 2nd can be shortened by the antenna element of the 4th extension, be suitable for antenna
Narrow situation of occupied area etc..Also, by the way that parasitic capacitance Ca can be increased using antenna element in the 4th extension.
In addition, as embodiment described above, the 1st auxiliary antenna portion and the 2nd are set preferably by flexible printing substrate
Auxiliary antenna portion, but can also be formed with other flexible conductor films.For example, it is also possible to using with flexible slim epoxy
Glass substrate, and the pattern in the 1st auxiliary antenna portion and the 2nd auxiliary antenna portion is formed thereon using metal foils such as copper foils.
Also, the flexible printing in the 1st auxiliary antenna portion and the 2nd auxiliary antenna portion in the above-described embodiment, will be provided with
Substrate is installed on distance piece and is arranged above base main body, but is used as other examples, as shown in Figure 10, can not also utilize
Distance piece, but the flexibility in the 1st auxiliary antenna portion 6 and the 2nd auxiliary antenna portion 7 will be provided with using binding agent or two-sided tape etc.
Printed base plate is pasted on the inner surface of the framework 20 of the communication equipment for being built-in with antenna assembly etc., so as to base main body 2
The mode of top extension is configured.
Symbol description
1- antenna assemblies, 2- base main bodies, the units of 3- the 1st, the units of 4- the 2nd, the units of 5- the 3rd, the auxiliary antenna portions of 6- the 1st,
The auxiliary antenna portions of 7- the 2nd, 8- distance pieces, AT- antenna elements, the extensions of E1- the 1st, the extensions of E2- the 2nd, the extensions of E3- the 3rd,
The extensions of E4- the 4th, the extensions of E5- the 5th, the extensions of E6- the 6th, the extensions of E7- the 7th, the extensions of E8- the 8th, GND- ground planes,
The passive elements of P1- the 1st, the passive elements of P2- the 2nd, the passive elements of P3- the 3rd, FP- distributing points.
Claims (5)
1. a kind of antenna assembly, it is characterised in that possess：
Insulative substrate main body；And form ground plane, the Unit the 1st and the 2nd of pattern with metal foil respectively in the base main body
Unit,
Unit the 1st is provided with distributing point in the cardinal extremity for being configured at the ground plane side and extended, and is connected with dielectric halfway
The antenna element of antenna, also, the 1st auxiliary antenna portion is connected with front end, Unit the 2nd is connected to Unit the 1st
Base end side simultaneously extends, and is connected with passive element halfway, also, the 2nd auxiliary antenna portion is connected with front end, the 1st auxiliary day
Line portion and the 2nd auxiliary antenna portion are formed and turned back by flexible thin film's conductor, and in the top of the base main body, with the base
Interval extends between plate main body,
The open end in the 1st auxiliary antenna portion configures in the opposite direction relative to the open end of the antenna element.
2. antenna assembly according to claim 1, it is characterised in that
The 1st auxiliary antenna portion and the 2nd auxiliary antenna portion form pattern on insulating properties film with metal foil.
3. antenna assembly according to claim 1, it is characterised in that
The open end in the 1st auxiliary antenna portion and the 2nd auxiliary antenna portion configures in the opposite direction each other.
4. antenna assembly according to claim 1, it is characterised in that
Distance piece is provided between the 1st auxiliary antenna portion and the 2nd auxiliary antenna portion and the base main body.
5. antenna assembly according to claim 1, it is characterised in that
Possessing Unit the 3rd, Unit the 3rd forms pattern in the base main body with metal foil, also, from Unit the 1st
Cardinal extremity extension, front end positioning away from being connected to the ground plane from the distributing point, and Unit the 1st has：1st prolongs
Extending portion, the cardinal extremity for being configured at the ground plane side is provided with distributing point, and extended to from the direction that the ground plane leaves；
And the 2nd extension, extend from the front end of the 1st extension to along the direction of the ground plane, Unit the 2nd has：3rd prolongs
Extending portion, extend from the cardinal extremity of Unit the 1st to from the direction that the 1st extension leaves；And the 4th extension, prolong from the 3rd
The front end of extending portion extends along the 1st extension to from the direction that the ground plane leaves, and the 1st auxiliary antenna portion has：
5th extension, extend from the front end of the 2nd extension to the top of the base main body；And the 6th extension, prolong from the 5th
The front end of extending portion extends along the 2nd extension, and the 2nd auxiliary antenna portion has：7th extension, from the 4th extension
Top from front end to the base main body extend；And the 8th extension, from the front end of the 7th extension along the 6th extension
Extension, the 2nd extension is in a manner of it can produce the parasitic capacitance between the ground plane relative to the ground plane
Interval extends, and midway is provided with the antenna element.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2013/000243 WO2014111975A1 (en) | 2013-01-18 | 2013-01-18 | Antenna device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104854756A CN104854756A (en) | 2015-08-19 |
| CN104854756B true CN104854756B (en) | 2017-11-14 |
Family
ID=51209109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380065801.XA Expired - Fee Related CN104854756B (en) | 2013-01-18 | 2013-01-18 | Antenna assembly |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101970861B1 (en) |
| CN (1) | CN104854756B (en) |
| HK (1) | HK1209906A1 (en) |
| WO (1) | WO2014111975A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101805777B1 (en) | 2015-07-01 | 2017-12-07 | 김미정 | Rf passive element and miniaturization method thereof |
| US10516212B2 (en) | 2016-07-01 | 2019-12-24 | Mee Jeong KIM | RF passive device and miniaturization method therefor |
| US11862838B2 (en) | 2020-04-17 | 2024-01-02 | Apple Inc. | Electronic devices having wideband antennas |
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| CN1862877A (en) * | 2005-01-31 | 2006-11-15 | 富士通电子零件有限公司 | Antenna and electric device |
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| KR100910526B1 (en) * | 2007-11-20 | 2009-07-31 | 삼성전기주식회사 | Antenna and mobile communication device using the same |
| JP2010081000A (en) | 2008-09-24 | 2010-04-08 | Murata Mfg Co Ltd | Composite antenna |
| JP2010093383A (en) * | 2008-10-03 | 2010-04-22 | Toshiba Corp | Electrical circuit material, antenna device and method for manufacturing the electrical circuit material |
| JP5131481B2 (en) | 2009-01-15 | 2013-01-30 | 株式会社村田製作所 | ANTENNA DEVICE AND RADIO COMMUNICATION DEVICE |
| JP5645118B2 (en) * | 2010-11-24 | 2014-12-24 | 三菱マテリアル株式会社 | Antenna device |
-
2013
- 2013-01-18 CN CN201380065801.XA patent/CN104854756B/en not_active Expired - Fee Related
- 2013-01-18 WO PCT/JP2013/000243 patent/WO2014111975A1/en active Application Filing
- 2013-01-18 KR KR1020157019503A patent/KR101970861B1/en active IP Right Grant
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2015
- 2015-10-23 HK HK15110445.3A patent/HK1209906A1/en not_active IP Right Cessation
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|---|---|---|---|---|
| CN1862877A (en) * | 2005-01-31 | 2006-11-15 | 富士通电子零件有限公司 | Antenna and electric device |
| CN101548428A (en) * | 2006-12-04 | 2009-09-30 | 松下电器产业株式会社 | Antenna device and electronic apparatus using the same |
| CN102422485A (en) * | 2009-04-02 | 2012-04-18 | 阿莫泰克有限公司 | Internal antenna module |
| CN102035065A (en) * | 2009-09-29 | 2011-04-27 | Tdk株式会社 | Antenna and communication device |
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Also Published As
| Publication number | Publication date |
|---|---|
| HK1209906A1 (en) | 2016-04-08 |
| KR101970861B1 (en) | 2019-04-19 |
| KR20150109363A (en) | 2015-10-01 |
| CN104854756A (en) | 2015-08-19 |
| WO2014111975A1 (en) | 2014-07-24 |
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