CN104205490A - Antenna device - Google Patents
Antenna device Download PDFInfo
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- CN104205490A CN104205490A CN201380013572.7A CN201380013572A CN104205490A CN 104205490 A CN104205490 A CN 104205490A CN 201380013572 A CN201380013572 A CN 201380013572A CN 104205490 A CN104205490 A CN 104205490A
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- 239000000758 substrate Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000013459 approach Methods 0.000 claims description 3
- 230000003071 parasitic effect Effects 0.000 description 53
- 230000005855 radiation Effects 0.000 description 12
- 239000003792 electrolyte Substances 0.000 description 9
- 238000009740 moulding (composite fabrication) Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
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Classifications
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—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
- H01Q5/342—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
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- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
Provided is an antenna device that is configured as a multi-resonant antenna and that allows for flexible adjustment of the resonance frequencies. The antenna device comprises: a substrate, a ground pattern (GND) formed on the surface of the substrate, and a first element (3) and a second element (4). The first element includes a feeding point (FP) on a base end side and also includes first passive elements (P1a, P1b) and an antenna element (AT) connected to one another and extending. The second element has a base end connected to the ground pattern and extends along the first element. The first element has a first extending portion (E1) that extends from the base end to the first passive elements along the ground pattern, a second extending portion (E2) that extends from the first passive elements in the extending direction of the first extending portion with the antenna element (AT) existing at a midpoint, a third extending portion (E3) that extends from the front end of the second extending portion, and a fourth extending portion (E4) that extends from the front end of the third extending portion along the second extending portion and that has a front end connected to the first extending portion.
Description
Technical field
The present invention relates to a kind of antenna assembly of realizing shaking of multi resonant.
Background technology
In the past, in communication equipment, in order to make the resonance frequency of antenna realize shaking of multi resonant, and a kind of antenna assembly that possesses the antenna of radiation electrode and electrolyte blocks and use switch, control voltage source was proposed.
For example, as the prior art based on electrolyte blocks, in patent documentation 1, propose combined antenna, this combined antenna forms resin-formed body by radiation electrode, and then by electrolyte blocks being carried out to the integrated high efficiency that obtains with binding agent.
And the prior art as using switch, control voltage source proposes a kind of antenna assembly in patent documentation 2, it possesses: the 1st radiation electrode; The 2nd radiation electrode; And switch, be situated between and be located between the middle part of the 1st radiation electrode and the base end part of the 2nd radiation electrode, for the 2nd radiation electrode is electrically connected to or TURP breaks with the 1st radiation electrode.
Patent documentation 1: Japanese Patent Publication 2010-81000 communique
Patent documentation 2: Japanese Patent Publication 2010-166287 communique
Yet, in above-mentioned prior art, still remain following problem.
; according in the technology of electrolyte blocks as described in Patent Document 1; the electrolyte blocks that uses excitation radiation electrode, needs the design of electrolyte blocks, radiation electrode pattern etc. in every equipment, the bad phenomenon that exists antenna performance variation or unstable key element to increase according to this design condition.And, because radiation electrode is formed at the surface of resin-formed body, so need on resin-formed body, design radiation electrode pattern, according to installed communication equipment and its purposes, need Antenna Design and Design of Dies, cause cost significantly to increase.In addition, electrolyte blocks and resin-formed body form integrated by binding agent, therefore exist except the Q value of binding agent, also according to bonding condition (thickness of binding agent, bond area etc.), the bad phenomenon that antenna performance variation or unstable key element increase.
And, in the situation that the use switch of being recorded as patent documentation 2, control the antenna assembly of voltage source, owing to utilizing switch to switch resonance frequency, therefore need to control the structure of voltage source or reactance circuit etc., exist the antenna structure of every equipment to complicate, without the degree of freedom of design, be difficult for adjusting the problem of antenna.
Summary of the invention
The present invention completes in view of above-mentioned problem, its object is to provide a kind of antenna assembly, it can adjust each resonance frequency through shaking of multi resonant neatly, and can be cheap and easily guarantee antenna performance according to purposes and every equipment, and can realize miniaturization and slimming.
The present invention has adopted following structure for solving above-mentioned problem., being characterized as of the antenna assembly that the 1st invention is related, possess insulating properties base main body and with metal forming, form respectively the grounding pattern of pattern on the surface of this base main body, Unit the 1st and Unit the 2nd, described Unit the 1st is provided with distributing point at the base end side that approaches described grounding pattern, and be connected with the antenna element of the 1st passive component and dielectric antenna midway in turn, in the side along described grounding pattern, extend upward, the cardinal extremity of described Unit the 2nd is connected in described grounding pattern, and be connected with the 2nd passive component midway, between described grounding pattern and described Unit the 1st, along described Unit the 1st, extend, described Unit the 1st has: the 1st extension, along described grounding pattern, from cardinal extremity, extend to described the 1st passive component, the 2nd extension, the bearing of trend from described the 1st passive component along described the 1st extension extends, and sets described antenna element midway, the 3rd extension, extends towards described the 2nd unit one side from the front end of the 2nd extension, and the 4th extension, from the front end of the 3rd extension, between described the 2nd extension and described Unit the 2nd, along described the 2nd extension, extending, front end is connected in described the 1st extension.
In this antenna assembly, Unit the 1st has: the 2nd extension, and the bearing of trend from described the 1st passive component along the 1st extension extends, and sets described antenna element midway; The 3rd extension, from the front end of the 2nd extension, extends towards the 2nd unit one side; And the 4th extension, front end from the 3rd extension, between the 2nd extension and Unit the 2nd, along the 2nd extension, extend, front end is connected in the 1st extension, therefore by the 1st～4th extension connecting in the form of a ring, the open end section in Unit the 1st can be formed in the inside and outside load pattern that can effectively produce parasitic capacitance.That is,, because this load pattern becomes the open end section of antenna element, the situation that therefore becomes open end with high impedance antenna element is compared, and suppresses human body around and the impact of circumferential component, thereby can prevent antenna performance variation.
Particularly, can produce the parasitic capacitance between parasitic capacitance, antenna element and the grounding pattern of parasitic capacitance between parasitic capacitance, the 4th extension and the grounding pattern between the 4th extension and Unit the 2nd, load pattern inner (between the 2nd extension and the 4th extension), at least take Unit the 1st as the main resonance frequency obtaining with take Unit the 2nd can obtain the height adjustment degree of freedom in each resonance frequency of the main resonance frequency obtaining, and can take into account the impact of antenna performance and minimizing human body and circumferential component.
Thereby, by effectively utilizing the inside and outside compound parasitic capacitance based on above-mentioned load pattern, can realize shaking of multi resonant, and can reduce the impact of human body and circumferential component, described load pattern has the antenna element as the self-resonance of loading element can to(for) desirable resonance frequency.
And, by selecting antenna element and passive component, can adjust neatly each resonance frequency, can obtain the antenna assembly that can realize with shaking of the corresponding multi resonant of design condition.Thus, from antenna structure, can adjust neatly each resonance frequency, therefore changeable resonance frequency, and according to purposes and the variable adjustment position based on passive component etc. of equipment.
And, can in the plane of base main body, design, compare and can realize slimming with the situation of use electrolyte blocks in the past and resin-formed body etc., and by selecting the antenna element as dielectric antenna, can realize miniaturization and high performance.And, without the cost causing because of mould, design alteration etc., can realize cost degradation.
The related antenna assembly of the 2nd invention is characterised in that, in the 1st invention, possesses Unit the 3rd, Unit the 3rd forms pattern on the surface of described base main body with metal forming, described Unit the 1st have connect described the 1st extension midway with the 5th extension of described grounding pattern, one end of described Unit the 3rd is connected in the front of described the 1st extension, and the other end is connected in described Unit the 2nd midway, described the 1st extension, described the 5th extension, described grounding pattern, described Unit the 2nd and described Unit the 3rd connect in the form of a ring, thereby in inner side, form peristome.
; in this antenna assembly; because the 1st extension, the 5th extension, grounding pattern, Unit the 2nd and Unit the 3rd connect in the form of a ring; thereby in inner side, form peristome; therefore can in peristome, produce parasitic capacitance; and according to other resonance frequencys, can further realize shaking of multi resonant, and can reduce the impact of human body and circumferential component.And, by being created on the parasitic capacitance in peristome, even also can reduce the impact of human body and circumferential component for two resonance frequencys based on Unit the 1st and Unit the 2nd.
Being characterized as of the antenna assembly that the 3rd invention is related, in the 1st or the 2nd invention, possesses Unit the 4th, Unit the 4th forms pattern on the surface of described base main body with metal forming, Unit the 4th is connected in the base end side of described Unit the 1st, and at the opposition side of described grounding pattern, along described the 1st extension, extend.
; in this antenna assembly, Unit the 4th is connected in the base end side of Unit the 1st, and extends along the 1st extension at the opposition side of grounding pattern; therefore the parasitic capacitance between Unit the 4th and Unit the 1st can be effectively utilized, thereby the shaking of multi resonant based on different resonance frequencys can be further realized.
Being characterized as of the antenna assembly that the 4th invention is related, in the arbitrary invention in the 1st invention is invented to the 3rd, described the 2nd extension and described the 4th extension extend minister than the described the 3rd.
That is,, in this antenna assembly, because the 2nd extension and the 4th extension extend minister than the 3rd, therefore can more effectively obtain inside and outside the generated compound parasitic capacitance at load pattern, and can reduce the impact of human body and circumferential component.
Being characterized as of the antenna assembly that the 5th invention is related, in the arbitrary invention in the 1st invention is invented to the 4th, described base main body possesses main substrate, and the main grounding parts that is electrically connected on described grounding pattern in this main substrate is formed with pattern on surface with metal forming.
; in this antenna assembly, possesses main substrate; the main grounding parts that is electrically connected on grounding pattern in this main substrate is formed with pattern on surface with metal forming, and therefore main grounding parts one side at main substrate can arrange high-frequency circuit etc., and can realize the miniaturization of base main body.And, base main body can be arranged to the top of main substrate etc., thereby the degree of freedom that arranges in the framework of equipment improves.In addition, in order to tackle neatly the configuration condition of the framework of installing, except main substrate, also can in base main body, adopt flexible base, board etc.And, also the distance piece consisting of high dielectric constant material or elastomeric material can be inserted between base main body and main substrate, can obtain miniaturization effect and the impact absorption effect of conductive pattern (each unit).
According to the present invention, can obtain following effect.
According to antenna assembly of the present invention, by the 1st～4th extension connecting in the form of a ring, can form in the open end section of Unit the 1st can be at the inside and outside load pattern that effectively produces parasitic capacitance, and can realize shaking of multi resonant with high antenna performance, and can reduce the impact of human body and circumferential component.
And, by selecting antenna element and the 1st passive component, the 2nd passive component, can adjust neatly each resonance frequency, can realize and shaking of the corresponding multi resonant of design condition, and can realize miniaturization and high performance.
Thereby antenna assembly of the present invention is realization multi resonant shake corresponding with multiple use and equipment easily, and can realize saving spatialization.
Accompanying drawing explanation
Fig. 1 is in an execution mode of antenna assembly involved in the present invention, represents the vertical view of the position relationship of each unit.
Fig. 2 is in the present embodiment, is illustrated in the wiring diagram of the parasitic capacitance generating in antenna assembly.
Fig. 3 is in the present embodiment, represents stereogram (a), vertical view (b), front view (c) and the upward view (d) of antenna element.
Fig. 4 is in the present embodiment, represents the concise and to the point profile of antenna assembly.
Fig. 5 is in the present embodiment, the curve chart of the VSWR characteristic (voltage standing wave ratio) when being illustrated in free space state and human body and wearing 4 resonance in state.
Fig. 6 is in the present embodiment, represents the curve chart of the antenna pattern of antenna assembly.
Embodiment
A kind of execution mode of antenna assembly involved in the present invention is described referring to figs. 1 to Fig. 6 below.
As shown in Figures 1 and 2, the antenna assembly in present embodiment 1 possesses: insulating properties base main body 2; And with metal formings such as Copper Foils, form respectively grounding pattern GND, the 1st the 4, the 3rd unit 5, Unit the 3, the 2nd, unit and the 4th unit 6 of pattern on the surface of this base main body 2.
And this antenna assembly 1 possesses main substrate 2B, this main substrate is electrically connected on grounding pattern GND by connecting distribution 11, and main grounding parts G2 forms pattern on surface with metal formings such as Copper Foils.
As shown in Figure 4, aforesaid substrate main body 2 is arranged at the top of main substrate 2B, is inserted with the insulating properties distance piece S being formed by general resins such as ABS between base main body 2 and main substrate 2B.In addition, main grounding parts G2 be also arranged at base main body 2 under.
Above-mentioned the 1st unit 3 is provided with distributing point FP at the base end side that approaches grounding pattern GND, and is connected with the antenna element AT of two the 1st passive component P1a, P1b and dielectric antenna midway in turn, in the side along grounding pattern GND, extends upward.At this, along the direction of grounding pattern GND, be the bearing of trend of grounding pattern GND in the present embodiment and be the direction on the end limit along opposed grounding pattern GND.In addition, in the situation that antenna assembly is integrally formed on main substrate, and in the grounding pattern GND situation shared with occupy main grounding parts G2 that the wider area in region forms with ratio antenna, along the direction of grounding pattern GND, become the direction on end limit of the main grounding parts G2 of opposed grounding pattern GND for edge.
The cardinal extremity of above-mentioned the 2nd unit 4 is connected in the front of grounding pattern GND, and is connected with two the 2nd passive component P2a, P2b midway, between grounding pattern GND and the 1st unit 3, along the 1st unit 3, extends.
Above-mentioned the 1st unit 3 has: the 1st extension E1, along grounding pattern GND, extends to the 1st passive component P1a from cardinal extremity; The 2nd extension E2, the bearing of trend from the 1st passive component P1a along the 1st extension E1 extends, and sets the 1st passive component P1b and antenna element AT midway; The 3rd extension E3, extends towards a side of the 2nd unit 4 from the front end of the 2nd extension E2; The 4th extension E4 from the front end of the 3rd extension E3, extends along the 2nd extension E2 between the 2nd extension E2 and the 2nd unit 4, and front end is connected in the 1st extension E1.That is, by the 1st extension E1～4th extension E4 connecting in the form of a ring, can be at the inside and outside load pattern of parasitic capacitance that effectively produces in the open end section formation of the 1st unit 3.
In addition, the 3rd extension E3 extends towards the direction of the bearing of trend quadrature with the 2nd extension E2 and the 4th extension E4, and the 2nd extension E2 and the 4th extension E4 are set as longer than the 3rd extension E3.
And above-mentioned the 1st unit 3 has the 5th extension E5, the 5th extension connect the 1st extension E1 midway with grounding pattern GND.The 5th extension E5 extends towards grounding pattern GND from the 1st extension E1's midway, and is connected in grounding pattern GND midway via the 3rd passive component P3.
And one end of above-mentioned the 3rd unit 5 is connected in the front of the 1st extension E1, and the other end is connected in the 2nd unit 4 midway.That is, the other end of the 3rd unit 5 is connected between the 2nd passive component P2a and the 2nd passive component P2b.In addition, also passive component can be connected in to the part of the 3rd unit 5.
Thereby the 1st extension E1, the 5th extension E5, grounding pattern GND, the 2nd unit 4 and the 3rd unit 5 connect in the form of a ring, thereby in inner side, form peristome K.
Above-mentioned the 4th unit 6 is connected in the base end side of the 1st unit 3 via the 4th passive component P4, and extends along the 1st extension E1 at the opposition side of grounding pattern GND.
The front of above-mentioned the 1st extension E1 is set as the wide width part E1a that width forms extensivelyr than base end side, with the opposed front end that is equipped with the 4th unit 6 of this wide width part E1a.In addition, at this wide width part, E1a is connected with the front end of the 4th extension E4, and is connected with the 3rd unit 5.
Aforesaid substrate main body 2 and main substrate 2 are general printed base plate, have adopted in the present embodiment the printed base plate consisting of glass epoxy resin etc.
Above-mentioned distributing point FP is connected with the high-frequency circuit (omitting diagram) that is arranged at the main grounding parts G2 of main substrate 2B.
Above-mentioned antenna element AT be can self-resonance to desirable resonance frequency loading element, such as being illustrated in figure 3 the chip aerial that is formed with the conductive patterns such as Ag 22 on the surface of the dielectrics such as pottery 21.This antenna element AT, according to the setting of resonance frequency etc., also can select the mutually different elements such as its length, width, conductive pattern 22, and also can select identical element.
The 3, the 2nd unit 4, above-mentioned Unit the 1st and the 4th spaced interval, unit 6 and extend, so as can to produce parasitic capacitance each other and and grounding pattern GND between parasitic capacitance.
That is, as shown in Figure 2, can produce: the parasitic capacitance Ca between the 4th extension E4 and the 2nd unit 4; Parasitic capacitance Cb between the 4th extension E4 and grounding pattern GND; The parasitic capacitance Cc of load pattern inner (between the 2nd extension E2 and the 4th extension E4); Parasitic capacitance Cd between antenna element AT and grounding pattern GND and main grounding parts G2; Parasitic capacitance Ce between the 4th unit 6 and the 1st unit 3 (wide width part E1a); Parasitic capacitance Cf between the 4th unit 6 and the 1st extension E1; Parasitic capacitance Cg in peristome K; Parasitic capacitance Ch between the 4th unit 6 and grounding pattern GND and main grounding parts G2; Parasitic capacitance Ci between the 1st extension E1 and grounding pattern GND; And the 2nd parasitic capacitance Cj between unit 4 and grounding pattern GND.
Above-mentioned the 1st passive component P1a, P1b, the 2nd passive component P2a, P2b～4th passive component P4, for example, adopt wire jumper, inductor, capacitor or resistance.
Then, with reference to figure 1 and Fig. 5, each resonance frequency in the antenna assembly of present embodiment is described.
As shown in Figure 5, in the antenna assembly 1 of present embodiment, with the 1st resonance frequency f1, the 2nd resonance frequency f2, these 4 frequencies of the 3rd resonance frequency f3, the 4th resonance frequency f4 by shaking of multi resonant.
Above-mentioned the 1st resonance frequency f1 is low-frequency band in 4 resonance frequencys, by the 1st unit 3 (becoming the 1st extension E1～4th extension E4 of the 1st extension E1 and load pattern) and parasitic capacitance, is decided.And above-mentioned the 2nd resonance frequency f2 is intermediate frequency band in 4 resonance frequencys, by the 2nd unit 4 and the 1st passive component P1a, P1b, the 1st extension E1, parasitic capacitance, decided.And above-mentioned the 3rd resonance frequency f3 for being different from the intermediate frequency band of the 2nd resonance frequency f2, is decided by peristome K and the 2nd passive component P2a, P2b, grounding pattern GND and parasitic capacitance in 4 resonance frequencys.In addition, above-mentioned the 4th resonance frequency f4 is high frequency band in 4 resonance frequencys, by the 2nd unit the 4, the 2nd passive component P2a, P2b, the 1st extension E1 and parasitic capacitance, is decided.
And, for each resonance frequency, with the 3rd passive component P3, control the flowing of high-frequency current that flows to grounding pattern GND side, carry out thus final impedance adjustment.
Below, for these resonance frequencys, be described in detail.
" about the 1st resonance frequency f1 "
The frequency of above-mentioned the 1st resonance frequency f1, can be by load pattern (the 2nd extension E2～4th extension E4, antenna element AT, the 1st passive component P1a, P1b), the 1st extension E1 that comprises wide width part E1a and parasitic capacitance Ca, Cb, Cc, Cd, Ce, Cf, Cg sets and adjust.
And the impedance adjustment of the 1st resonance frequency f1, can be undertaken by setting parasitic capacitance Ca, Cb, Cc, Cd, Ce, each parasitic capacitance of Cf, Cg.
In addition, final frequency adjustment, can carry out neatly by selecting the 1st passive component P1a, P1b.
And final impedance adjustment, can carry out neatly by selecting the 3rd passive component P3.
Thus, by " antenna element AT ", " length that each unit is long ", " passive component ", can adjust neatly resonance frequency and impedance.That is, the 1st resonance frequency f1 mainly the part of the dotted line Al in Fig. 1 adjust.
" about the 2nd resonance frequency f2 "
The frequency of above-mentioned the 2nd resonance frequency f2, can be by the 4th unit the 6, the 1st extension E1, parasitic capacitance Ce, Cf, Ch sets and adjust.
And the impedance adjustment of the 2nd resonance frequency f2, can be undertaken by the setting of parasitic capacitance Ce, Cf, each parasitic capacitance of Ch.
In addition, final frequency adjustment, can carry out neatly by selecting the 4th passive component P4.
And final impedance adjustment, can be by selecting the 3rd passive component P3 to carry out neatly.
Thus, can be by " Unit the 4th ", " each element length ", " passive component " and " each parasitic capacitance " and adjust neatly resonance frequency, impedance.That is, the 2nd resonance frequency f2 mainly the part of the single-point in Fig. 1 line A2 adjust.
" about the 3rd resonance frequency f3 "
The frequency of above-mentioned the 3rd resonance frequency f3, can be by the 1st extension E1, parasitic capacitance Cf, Cg, Ci sets and adjust.
And, the impedance adjustment of the 3rd resonance frequency f3, the setting of each parasitic capacitance that can be by parasitic capacitance Cf, Cg, Ci is carried out.
In addition, final frequency adjustment, can carry out neatly by selecting the 2nd passive component P2a.
And final impedance adjustment, can carry out neatly by selecting the 3rd passive component P3.
Like this can be by " each element length ", " passive component " and " each parasitic capacitance " and adjust neatly resonance frequency, impedance.That is, the 3rd resonance frequency f3 mainly the part of the double dot dash line A3 in Fig. 1 adjust.
" about the 4th resonance frequency f4 "
The frequency of above-mentioned the 4th resonance frequency f4, can be by the 2nd unit the 4, the 1st extension E1, parasitic capacitance Ca, Cb, Cf, Cg, Cj sets and adjust.
The impedance adjustment of the 4th resonance frequency f4, the setting of each parasitic capacitance that can be by parasitic capacitance Ca, Cb, Cf, Cg, Cj is carried out.
In addition, final frequency adjustment, can carry out neatly by selecting the 2nd passive component P2a, P2b.
And final impedance adjustment, can carry out neatly by selecting the 3rd passive component P3.
Thus, can be by " the 2nd unit 4 ", " each element length ", " passive component " and " each parasitic capacitance " and adjust neatly resonance frequency, impedance.That is, the 4th resonance frequency f4 mainly the part of the dotted line A4 in Fig. 1 adjust.
Secondly, load pattern part is described.
Above-mentioned load pattern designs with following form, is arranged at the front of the 1st extension E1, by the 1st extension E1～4th extension E4, form in the form of a ring, and at the open end section load complex capacitance of the 1st unit 3.
The form of the 4th desirable extension E4 is, and the 2nd unit 4 between can produce the mode of parasitic capacitance Ca, be configured, to the 4th resonance frequency f4 based on the 2nd unit 4 also load complex capacitance.
And in order to take into account the impact of antenna performance and reduction human body and circumferential component, the area of above-mentioned load pattern part is the bigger the better.In addition, if equal area, the length of the 2nd desirable extension E2 and the 4th extension E4 be set for longer than the length of the 3rd extension E3.
Next, for peristome K, describe.
Peristome K is configured to by the 1st extension E1, the 5th extension E5, the 3rd passive component P3, grounding pattern GND, the 2nd unit the 4, the 2nd passive component P2a and the 3rd unit 5 and surrounds.Parasitic capacitance Cg by generating in this peristome K, can reduce the impact of human body and circumferential component.And this peristome K is to the 1st resonance frequency f1 based on load pattern part and the 4th resonance frequency f4 based on the 2nd unit 4, the effect by identical parasitic capacitance also can reduce the impact of human body and circumferential component.
In addition, for the high performance of antenna performance, the aperture area that it is desirable to peristome K is large, and about the 3rd passive component P3, it is desirable to desirable resonance frequency is high impedance.
Thus, in the antenna assembly 1 of present embodiment, the 1st unit 3 has: the 2nd extension E2, and the bearing of trend from the 1st passive component P1a along the 1st extension E1 extends, and sets antenna element AT midway; The 3rd extension E3, extends towards a side of the 2nd unit 4 from the front end of the 2nd extension E2; And the 4th extension E4, front end from the 3rd extension E3, between the 2nd extension E2 and the 2nd unit 4, along the 2nd extension E2, extend, front end is connected in the 1st extension E1, therefore by the 1st extension E1～4th extension E4 connecting in the form of a ring, the open end section in the 1st unit 3 can be formed in the inside and outside load pattern that can effectively produce parasitic capacitance.
That is, this load pattern becomes the open end section of antenna element (the 1st unit 3), and the situation that therefore becomes open end with the antenna element AT of high impedance is compared, and by suppressing the impact of human body around and circumferential component, can prevent antenna performance variation.
Like this, by effectively utilizing the inside and outside compound parasitic capacitance based on above-mentioned load pattern, can realize shaking of multi resonant, and can reduce the impact of human body and circumferential component, described load pattern has the antenna element AT as the self-resonance of loading element can to(for) desirable resonance frequency.
And, by selecting antenna element AT and passive component, can adjust neatly each resonance frequency, and can obtain the antenna assembly with corresponding the shaking of multi resonant that impose a condition.Thus, from antenna structure, can adjust neatly each resonance frequency, and can switch resonance frequency, according to purposes and equipment and can change the adjustment position based on passive component etc.
And, can in the plane of base main body 2, design, compare and can realize slimming with the situation of use electrolyte blocks in the past and resin-formed body, and, by selecting can to realize miniaturization and high performance as the antenna element of dielectric antenna.And without the cost of mould, design alteration etc., can realize low cost.
And, the 1st extension E1, the 5th extension E5, grounding pattern GND, the 2nd unit 4 and the 3rd unit 5 connect in the form of a ring, thereby in inner side, form peristome K, therefore in peristome K, can form parasitic capacitance Cg, and can further realize according to the shaking of multi resonant of other resonance frequencys f3, and can reduce the impact of human body and circumferential component.By the parasitic capacitance Cg generating in peristome K, even also can reduce the impact of human body and circumferential component for the 1st resonance frequency f1, the 4th resonance frequency f4.
In addition, because the 4th unit 6 is connected in the base end side of the 1st unit 3, and the opposition side at grounding pattern GND extends along the 1st extension E1, therefore can effectively utilize the parasitic capacitance between the 4th unit 6 and the 1st unit 3, thereby the resonance frequency f2 based on different from the 1st resonance frequency f1 and the 4th resonance frequency f4 can further realize shaking of multi resonant.
And, because the 2nd extension E2 and the 4th extension E4 are longer than the 3rd extension E3, therefore can more effectively obtain the compound parasitic capacitance in the inside and outside generation of load pattern, and can reduce the impact of human body and circumferential component.
And, owing to possessing the main grounding parts G2 that is electrically connected on grounding pattern GND, on surface, with metal forming, form the main substrate 2B of pattern, therefore main grounding parts G2 mono-side at main substrate 2B can arrange high-frequency circuit, and can realize the miniaturization of base main body 2.And, also base main body 2 can be arranged to the top of main substrate 2B etc., so the degree of freedom that arranges in the framework of equipment improves.In addition, in order to tackle neatly the configuration condition of the framework of installing, except main substrate 2B, in base main body 2, can also adopt flexible base, board etc.And, also the distance piece consisting of high dielectric constant material or elastomeric material can be inserted between base main body 2 and main substrate 2B, can obtain miniaturization effect and the impact absorption effect of conductive pattern (each unit).
Embodiment
Next, about the embodiment of the antenna assembly of actual fabrication present embodiment, with reference to Fig. 5 and Fig. 6, illustrate and measure the result of VSWR characteristic (voltage standing wave ratio) and about the measurement result of the antenna pattern under each resonance frequency.
First, about around without the situation of the free space state of human body and circumferential component, with by close contact, in putting into the PET bottle of the physiological saline of the identical salt concentration of human body, be assumed to be the situation that human body is worn state, the result of measuring VSWR characteristic (voltage standing wave ratio) is represented in Fig. 5.
In addition, in the mensuration of Fig. 5, as the 1st passive component P1a, use the inductor of L=1.5nH, as the 1st passive component P1b, used the inductor of L=20nH.And, as the 2nd passive component P2a, use wire jumper, as the 2nd passive component P2b, used the inductor of L=10nH.In addition, as the 3rd passive component P3, use the capacitor of C=2pF, as the 4th passive component P4, used the inductor of L=5.6nH.
As from this measurement result, the 1st～4th resonance frequency f1～f4 obtaining under free space state, even in the situation that human body is worn state, the variation of resonance frequency is also little, and change is inhibited.
As typical example, the situation of the 2nd resonance frequency f2 of the 1st resonance frequency f1 of 900MHz frequency band and 1800MHz frequency band is represented as follows.
The 1st resonance frequency f1
< free space state >
Resonance frequency: 859.3MHz (VSWR=2.50)
< human body is worn state >
Resonance frequency: 800.5MHz (VSWR=1.02)
The 2nd resonance frequency f2
< free space state >
Resonance frequency: 1829.9MHz (VSWR=1.08)
< human body is worn state >
Resonance frequency: 1710.5MHz (VSWR=1.07)
Next, about the antenna assembly of above-described embodiment, the measurement result of the antenna pattern under the 1st resonance frequency f1 and the 2nd resonance frequency f2 is represented in Fig. 6.
In addition, the bearing of trend of antenna element AT (bearing of trend of the 2nd extension E2) is made as to Y-direction, by being made as directions X from the 2nd extension E2 towards the bearing of trend of the 3rd extension E3 of the 4th extension E4, the vertical direction in the surface with respect to base main body 2 is made as to Z direction.Vertically polarized wave, horizontal polarization with respect to YZ face and ZX face now involved to power gain to be measured.And the mensuration of this antenna pattern is carried out under above-mentioned free space state.
In addition, the gain of the average power of the 1st resonance frequency f1 on YZ face is-3.0dBi that the average power gain of the 2nd resonance frequency f2 is-7.6dBi.And the average power gain of the 1st resonance frequency f1 on ZX face is-4.5dBi that the average power gain of the 2nd resonance frequency f2 is-2.2dBi.
In addition, the present invention is not limited to above-mentioned execution mode, can append various changes without departing from the spirit and scope of the present invention.
For example, in the above-described embodiment, be made as the structure of dividing the main substrate that is arranged with base main body, but can be also that all unit and grounding pattern are arranged on to 1 antenna assembly on main substrate.
And, in the above-described embodiment, only in Unit the 1st, be provided with antenna element, but also can antenna element be set to carry out the shortening of each unit in Unit the 2nd and Unit the 4th, and the miniaturization of implement device integral body.
Symbol description
1-antenna assembly, 2-base main body, 2B-main substrate, 3-Unit the 1st, 4-Unit the 2nd, 5-Unit the 3rd, 6-Unit the 4th, AT-antenna element, E1-the 1st extension, E1a-wide width part, E2-the 2nd extension, E3-the 3rd extension, E4-the 4th extension, E5-the 5th extension, GND-grounding pattern, the main grounding parts of G2-, K-peristome, P1a, P1b-the 1st passive component, P2a, P2b-the 2nd passive component, P3-the 3rd passive component, P4-the 4th passive component, FP-distributing point.
Claims (5)
1. an antenna assembly, is characterized in that, possesses:
Insulating properties base main body; And
Surface in this base main body forms respectively grounding pattern, Unit the 1st and Unit the 2nd of pattern with metal forming,
Described Unit the 1st is provided with distributing point at the base end side that approaches described grounding pattern, and is connected with the antenna element of the 1st passive component and dielectric antenna midway in turn, in the side along described grounding pattern, extend upward,
The cardinal extremity of described Unit the 2nd is connected in described grounding pattern, and is connected with the 2nd passive component midway, between described grounding pattern and described Unit the 1st, along described Unit the 1st, extend,
Described Unit the 1st has: the 1st extension, along described grounding pattern, extends to described the 1st passive component from cardinal extremity;
The 2nd extension, the bearing of trend from described the 1st passive component along described the 1st extension extends, and sets described antenna element midway;
The 3rd extension, from the front end of the 2nd extension, extends towards described the 2nd unit one side; And
The 4th extension, from the front end of the 3rd extension, between described the 2nd extension and described Unit the 2nd, extends along described the 2nd extension, and front end is connected in described the 1st extension.
2. antenna assembly according to claim 1, is characterized in that, possesses
Unit the 3rd, its surface in described base main body forms pattern with metal forming,
Described Unit the 1st has: the 5th extension, its connect described the 1st extension midway with described grounding pattern,
One end of described Unit the 3rd is connected in the front of described the 1st extension, and the other end is connected in described Unit the 2nd midway,
Described the 1st extension, described the 5th extension, described grounding pattern, described Unit the 2nd and described Unit the 3rd connect in the form of a ring, thereby form peristome in inner side.
3. antenna assembly according to claim 1, is characterized in that, possesses
Unit the 4th, its surface in described base main body forms pattern with metal forming,
Unit the 4th is connected in the base end side of described Unit the 1st, and extends along described the 1st extension at the opposition side of described grounding pattern.
4. antenna assembly according to claim 1, is characterized in that,
Described the 2nd extension and described the 4th extension extend minister than the described the 3rd.
5. antenna assembly according to claim 1, is characterized in that, possesses
Main substrate, the main grounding parts that is electrically connected on described grounding pattern forms pattern on surface with metal forming.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-096220 | 2012-04-20 | ||
| JP2012096220A JP5880248B2 (en) | 2012-04-20 | 2012-04-20 | Antenna device |
| PCT/JP2013/002604 WO2013157260A1 (en) | 2012-04-20 | 2013-04-17 | Antenna device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104205490A true CN104205490A (en) | 2014-12-10 |
| CN104205490B CN104205490B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380013572.7A Expired - Fee Related CN104205490B (en) | 2012-04-20 | 2013-04-17 | Antenna assembly |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP5880248B2 (en) |
| KR (1) | KR101961981B1 (en) |
| CN (1) | CN104205490B (en) |
| HK (1) | HK1204509A1 (en) |
| TW (1) | TWI569509B (en) |
| WO (1) | WO2013157260A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6319572B2 (en) * | 2014-06-20 | 2018-05-09 | 三菱マテリアル株式会社 | Antenna device |
| TWI734371B (en) * | 2020-02-07 | 2021-07-21 | 啓碁科技股份有限公司 | Antenna structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1926720A (en) * | 2003-12-25 | 2007-03-07 | 三菱综合材料株式会社 | Antenna device and communication apparatus |
| EP2040329A2 (en) * | 2007-09-21 | 2009-03-25 | Kabushiki Kaisha Toshiba | Antenna device and electronic apparatus |
| WO2011055003A1 (en) * | 2009-11-03 | 2011-05-12 | Pulse Finland Oy | Adjustable antenna |
| WO2012049847A1 (en) * | 2010-10-15 | 2012-04-19 | 三菱マテリアル株式会社 | Antenna-device substrate and antenna device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004096341A (en) * | 2002-08-30 | 2004-03-25 | Fujitsu Ltd | Antenna apparatus including inverted f antenna with variable resonance frequency |
| JP2005079959A (en) * | 2003-09-01 | 2005-03-24 | Matsushita Electric Ind Co Ltd | Antenna |
| JP4868128B2 (en) * | 2006-04-10 | 2012-02-01 | 日立金属株式会社 | ANTENNA DEVICE AND RADIO COMMUNICATION DEVICE USING THE SAME |
| JP2010081000A (en) | 2008-09-24 | 2010-04-08 | Murata Mfg Co Ltd | Composite antenna |
| JP5131481B2 (en) | 2009-01-15 | 2013-01-30 | 株式会社村田製作所 | ANTENNA DEVICE AND RADIO COMMUNICATION DEVICE |
-
2012
- 2012-04-20 JP JP2012096220A patent/JP5880248B2/en not_active Expired - Fee Related
-
2013
- 2013-04-17 KR KR1020147029168A patent/KR101961981B1/en active IP Right Grant
- 2013-04-17 WO PCT/JP2013/002604 patent/WO2013157260A1/en active Application Filing
- 2013-04-17 CN CN201380013572.7A patent/CN104205490B/en not_active Expired - Fee Related
- 2013-04-18 TW TW102113809A patent/TWI569509B/en not_active IP Right Cessation
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- 2015-04-17 HK HK15103761.4A patent/HK1204509A1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1926720A (en) * | 2003-12-25 | 2007-03-07 | 三菱综合材料株式会社 | Antenna device and communication apparatus |
| EP2040329A2 (en) * | 2007-09-21 | 2009-03-25 | Kabushiki Kaisha Toshiba | Antenna device and electronic apparatus |
| WO2011055003A1 (en) * | 2009-11-03 | 2011-05-12 | Pulse Finland Oy | Adjustable antenna |
| WO2012049847A1 (en) * | 2010-10-15 | 2012-04-19 | 三菱マテリアル株式会社 | Antenna-device substrate and antenna device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013157260A1 (en) | 2013-10-24 |
| KR20140146124A (en) | 2014-12-24 |
| CN104205490B (en) | 2016-08-31 |
| HK1204509A1 (en) | 2015-11-20 |
| KR101961981B1 (en) | 2019-03-25 |
| JP2013225735A (en) | 2013-10-31 |
| TWI569509B (en) | 2017-02-01 |
| JP5880248B2 (en) | 2016-03-08 |
| TW201403942A (en) | 2014-01-16 |
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