CN106299644A - Antenna assembly and the electronic equipment including this antenna assembly - Google Patents
Antenna assembly and the electronic equipment including this antenna assembly Download PDFInfo
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- CN106299644A CN106299644A CN201610698434.2A CN201610698434A CN106299644A CN 106299644 A CN106299644 A CN 106299644A CN 201610698434 A CN201610698434 A CN 201610698434A CN 106299644 A CN106299644 A CN 106299644A
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- radiation
- antenna
- department
- antenna assembly
- folding line
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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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
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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Abstract
It relates to antenna assembly and the electronic equipment including this antenna assembly, particularly relate to a kind of antenna assembly, comprising: the first Department of Radiation, for radiation and reception antenna signal, feed end, for described first Department of Radiation is couple to signal source, the first earth terminal, for being connected to ground by described first Department of Radiation.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of antenna assembly and the electricity including this antenna assembly
Subset.
Background technology
As consumption electronic product, described electronic equipment just develops towards the direction of miniaturization, and such as its thickness is increasingly
Thin, volume is more and more less.Along with lower thickness and the volume of electronic equipment diminish, important as Wireless Telecom Equipment of antenna
Ingredient, it takes up space and is also compressed accordingly, which increases the design difficulty of antenna.And the demand for development of communication technology
Antenna provides broader communication bandwidth.
As a example by planar inverted-F antenna (i.e. PIFA antenna), PIFA antenna is extensively applied in mobile phone, but is in the nature micro-strip
The PIFA antenna of antenna has the birth defect that narrow bandwidth, gain are low.The size of antenna is it is also known that ground mutually restricts with bandwidth.Separately
Outward, the application of different operating frequency range in such as wifi network, the PIFA antenna of single resonance point is also by inapplicable.
Summary of the invention
Therefore, the disclosure aim to solve the problem that technical problem can include following in one or more: reducing antenna size
Under the conditions of widen the bandwidth of PIFA antenna, improve its efficiency and gain, and make it have multiple resonance point.
One side according to the application, it is provided that a kind of antenna assembly.This antenna assembly comprises the steps that the first Department of Radiation, uses
In radiation and reception antenna signal；Feed end, for being couple to signal source by described first Department of Radiation；First earth terminal, is used for
Described first Department of Radiation is connected to ground, and wherein, described first Department of Radiation includes main antenna branch and connects with this main antenna branch
The left-hand unit connect, described main antenna branch and described left-hand unit constitute right-hand man's composite construction (CRLH).Left-hand unit makes
Its reactance parameter must be only dependent upon according to the bandwidth of the antenna assembly of the disclosure, thus breach the sky defined in CHU-limit
The restriction to antenna size of the tape width.
In the preferred form of implementation of one, described antenna assembly may also include that the second Department of Radiation, described second Department of Radiation
With described first Department of Radiation near-field coupling, it is used for radiating and receive described aerial signal；Second earth terminal, for by described second
Department of Radiation is connected to ground, and wherein, described second Department of Radiation is right-hand man's composite construction.The resonance point of the second Department of Radiation can be with
The resonance point of one Department of Radiation is different, thus provides and can adapt in the antenna assembly of multiband work.By adjusting reactance ginseng
In the case of number makes the resonance points of the second Department of Radiation close with the resonance point of the first Department of Radiation, it is also possible to make it respective humorous
The band that shakes merges, thus the bandwidth widened generally.
In the preferred form of implementation of one, described antenna assembly may also include has first and the medium of second
Plate, wherein, described first with described second opposed, wherein, described first Department of Radiation is arranged in the first of described dielectric-slab
On face, described second Department of Radiation is arranged in the position corresponding with described first Department of Radiation on described second.
Electromagnetic wave phase place propagation constant in right-hand man's composite construction can be just, zero or negative, obtain according to Bloch theorem
The dispersion relation gone out understands, and when phase propagation constant is zero or negative, resonance wavelength tends to infinitely great, and now antenna size is no longer
Limited by resonant frequency.Therefore the right-hand man's composite construction in the disclosure can be no longer by traditional, such as microstrip antenna paster
Length is required to be the restriction of transmission wavelength half, but can be made to the least.
In a preferred form of implementation, right-hand man's composite construction of the first Department of Radiation can be that to be smaller in size than sky traditional thread binding
The folding line antenna of the operation wavelength put, described folding line antenna produces left hand inductance.Specifically, folding line antenna is connected
In the inside configuration of PIFA antenna, it is equivalent to be incorporated to left hand inductance right-handed transmission line circuit.The straight line identical with geometrical length
Antenna is compared, and effective electrical length of folding line antenna is the most longer, which compensates antenna size and reduces the radiation resistance that causes and subtract
Little and and then radiation efficiency reduce.Compared with other miniaturization technology such as using high medium substrate and loading technique, bending
Wire antenna avoids the bandwidth using high medium substrate to bring and narrows and be loaded into the outer members such as such as short circuit nail, gap, resistance
The extra nonradiative loss that brings of loading technique.In the adjacent level detail of folding line antenna, electric current is contrary, therefore to appearance
It is now radiationless.Its equivalent electric electrification can be affected by the live width of regulation folding line antenna, bending joint length, bending joint number
The parameter on road such that it is able to affect the resonant frequency of its PIFA antenna accessed.
Left-handed configuration in second Department of Radiation can also be folding line antenna, wherein, and the folding line antenna of the second Department of Radiation
With the folding line antenna alignment in the first Department of Radiation, and it is collectively forming dual meander line antenna with the latter.Double folding line structure energy
Enough improve the beamwidth of antenna further.It addition, by joint number, the size etc. of regulation each folding line antenna itself, each bending
Wire antenna can have the operating frequency of oneself, thus meets the communicating requirement of multiband.
In another preferred implementing form, the second Department of Radiation can include defect photogrammetry resonance ring, and described defect ground is humorous
The ring that shakes includes at least one split ring resonator being etched in earth plate, and at least one split ring resonator described is nested with one another, its
In, the ring body of each split ring resonator produces left hand inductance and opening produces left-handed capacitors, wherein, described second Department of Radiation
Also include the conduction band with gap being arranged on described defect photogrammetry resonance ring, described defect photogrammetry resonance ring and described conduction band
Capacitive couplings.The number of rings of split ring resonator is more than 1, that is, split ring resonator can be monocycle, complementary double-deck ring or
Shellring etc..Preferably employing dual openings resonant ring, the charge accumulation of the most single opening can produce electric dipole moment, and it can slacken humorous
Shake required dipole moment, therefore uses the split ring resonator that another opening is contrary to offset the electric dipole moment of previous opening.
In the most another preferred implementation, the second Department of Radiation can include microstrip antenna, and described microstrip antenna is loaded
Left hand inductance and left-handed capacitors, wherein, described left hand inductance is produced by the short branch line of the antenna terminal of described microstrip antenna
Give birth to, and described left-handed capacitors is produced by interdigital capacitor.
In a preferred embodiment, the first Department of Radiation constitutes Zero order resonator or single order resonator.If wait
The Zero order resonator being made up of right hand electric capacity, left hand inductance and loss resistance in parallel in effect circuit diagram is incorporated to right hand electricity again
Sense, then the first Department of Radiation is changed into single order resonator from Zero order resonator.Wherein, traditional right-handed transmission line is typically equivalent to string
Connection inductance and the circuit of shunt capacitance, but in a bit of transmission line model of micronized, the connection in series-parallel of inductance can equivalence
Conversion, therefore can obtain the right hand inductance of parallel connection in single order resonator.Second Department of Radiation constitutes single order resonator.First spoke
Portion of penetrating is different from the resonance center frequeH of the second Department of Radiation, thus can obtain multiple resonance points for more multiband, and have
There is the probability of broadened bandwidth.Such as, by regulating the first Department of Radiation and the reactance parameter of the second Department of Radiation so that the first radiation
The mid frequency of portion and the second Department of Radiation near thus produce fusion, compared to the bandwidth of the first Department of Radiation or the second Department of Radiation
The bigger bandwidth of bandwidth.
Efficiency is depended in gain, therefore, in order to obtain bigger radiation efficiency and radiation gain, and can be by multiple first spokes
The portion of penetrating is connected in series and/or multiple the two the second Departments of Radiation are connected in series.Each first Department of Radiation or the second Department of Radiation have respectively
From resonance center frequeH so that antenna assembly have adapt to different operating frequency multiple resonance center frequeHs.At one
In preferred embodiment, described antenna assembly includes multiple first Department of Radiation, electric coupling between the plurality of first Department of Radiation, often
Individual first Department of Radiation has respective resonance center frequeH so that described antenna assembly have adaptation different operating frequency many
Individual resonance center frequeH.In another preferred embodiment, described antenna assembly includes multiple second Department of Radiation, the plurality of second
Department of Radiation electric coupling, each second Department of Radiation has respective resonance center frequeH, so that described antenna assembly has adaptation
Multiple resonance center frequeHs of different operating frequency.
In the preferred form of implementation of one, described first Department of Radiation can have the first reactance parameter and the first center frequency
Rate, described second Department of Radiation can have the second reactance parameter and the second mid frequency, described first reactance parameter and described
Two reactance parameters be adjusted so that described first mid frequency and the second mid frequency near and produce fusion, described to widen
The beamwidth of antenna of antenna assembly.
In the preferred form of implementation of one, described main antenna branch can be the branch of PIFA antenna.
The disclosure further relates to a kind of electronic equipment, may include that signal source, and it produces radiofrequency signal；According to the disclosure
Antenna assembly, described antenna assembly and signal source electric coupling, for the radiofrequency signal of signal source being radiate, described sky is traditional thread binding
Put and go back reception antenna signal；Earth plate, it is connected to the earth terminal in described antenna assembly.
Antenna assembly according to the disclosure breaches antenna size defined in CHU-Limit by right-hand man's composite construction
Restriction to bandwidth such that it is able to increase bandwidth under conditions of reducing antenna size.By arranging resonance point different first
Department of Radiation and the second Department of Radiation, have multiple resonance point according to the antenna assembly of the disclosure such that it is able to is adapted to multiband work
Make.By multiple first Departments of Radiation and/or multiple second Department of Radiation being connected in series and improve radiation efficiency, thus improve sky
The gain of line apparatus.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be in embodiment or description of the prior art
The required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only some realities of the present invention
Execute example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawing.Wherein:
Fig. 1 schematically shows the schematic diagram of the antenna assembly of an embodiment according to the disclosure；
Fig. 2 schematically shows the radiating surface front view of the antenna assembly of an embodiment according to the disclosure；
Fig. 3 schematically shows the schematic diagram of the antenna assembly of an embodiment according to the disclosure；
Fig. 4 schematically shows the folding line antenna of the first Department of Radiation of an embodiment according to the disclosure；
Fig. 5 schematically shows the PIFA antenna section of right-hand man's composite construction of an embodiment according to the disclosure
Zero order resonator equivalent circuit；
Fig. 6 schematically shows the PIFA antenna section of right-hand man's composite construction of an embodiment according to the disclosure
Single order resonator equivalent circuit；
Fig. 7 schematically shows the radiating surface dorsal view of the antenna assembly of an embodiment according to the disclosure；
Fig. 8 schematically shows the complementary openings resonant ring knot of the second Department of Radiation of an embodiment according to the disclosure
Structure；
Fig. 9 schematically shows right-hand man's composite construction at the dielectric-slab back side of an embodiment according to the disclosure
Equivalent circuit diagram.
Figure 10 a schematically shows the electronic equipment of an embodiment according to the disclosure, and it includes according to the disclosure
Antenna assembly.
Figure 10 b schematically shows the antenna assembly of an embodiment according to the disclosure.
For scanning property, it is marked with identical reference with running through all accompanying drawings for same or equivalent element.Accompanying drawing is only
For schematically, element therein is without perspec-tive.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is a part of embodiment of the present invention rather than whole embodiments wholely.
Fig. 1 schematically shows the schematic diagram of the antenna assembly 100 of an embodiment according to the disclosure.Antenna assembly
100 include: the first Department of Radiation 110, and for radiation and reception antenna signal, feed end 120, for by described first Department of Radiation coupling
Receiving signal source, the first earth terminal 130, for being connected to ground, wherein, described first Department of Radiation by described first Department of Radiation 110
110 include: main antenna branch 140 and the left-hand unit 150 being connected with this main antenna branch, described main antenna branch 140 and institute
State left-hand unit 150 and constitute right-hand man's composite construction.Left-hand unit 150 includes LHM (LHM).LHM includes negative Jie
Permittivity material and material with negative refractive index, i.e. dielectric constant and pcrmeability are negative material, and the resonant frequency of LHM is only
Depend on its reactance parameter, breach the quality factor learnt according to the CHU limit and thus bandwidth antenna size is limited.First
Department of Radiation 110 can include that any those skilled in the art such as PIFA antenna, monopole antenna, microstrip antenna, loop aerial recognize
For rational antenna.First Department of Radiation 110 can be arranged on the side of antenna assembly 100.
Fig. 2 schematically shows the radiating surface front view of the antenna assembly 100 of an embodiment according to the disclosure.Root
It is produced on pcb board according to the antenna assembly 100 of the disclosure.The earth plate 160 that wherein metal is made is printed on pcb board.Antenna
Device 100 includes the first Department of Radiation 110 for radiation and reception antenna signal.This first Department of Radiation is by PIFA antenna 141 He
Connect the folding line antenna 151 between the branch of PIFA antenna 141.This folding line antenna 151 constitutes left-handed configuration, and with
PIFA antenna 141 collectively forms right-hand man's composite construction.The reversed F-typed PIFA antenna 141 that metal is made passes through non-metallic truck
Contact with pcb board, and connect earth plate 160, wherein earth terminal 130 also referred to as short circuit foot by earth terminal 130.Folding line sky
Line 151 is connected between the branch of PIFA antenna 141 with the form of metal patch.The radiance of PIFA antenna 141 very great Cheng
The opening provided for its edge by its height away from pcb board and its space occupied alone is provided on degree.And this metal patch
The folding line antenna 141 of sheet form does not damage its two above parameter, and therefore the infringement to conductor is the least, improves due to physics
Size and the radiation efficiency that causes and the reduction of gain.Antenna assembly 100 also includes feed end 120, for by described first spoke
The portion of penetrating is couple to unshowned signal source.
Fig. 3 schematically shows the schematic diagram of the antenna assembly 100 showing an embodiment according to the disclosure.My god
Line apparatus 100 has dielectric-slab 101, and dielectric-slab 101 has first and second, wherein, described first with described second
Face is opposed, and wherein, the first Department of Radiation 110 as shown in Figure 1 is arranged on first of described dielectric-slab, about the first spoke
Penetrate portion 110 not repeat them here, refer to diagram and the associated description of Fig. 1.Also by the second Department of Radiation 170 on described second
It is arranged in the position corresponding with described first Department of Radiation 110.Second Department of Radiation 170 and described first Department of Radiation 110 near field coupling
Close, for radiation and reception antenna signal.Antenna assembly 100 also includes the second earth terminal 131, for by described second Department of Radiation
170 are connected to ground.Second Department of Radiation 170 is right-hand man's composite construction.
According to a kind of form of implementation of the disclosure, the first Department of Radiation 110 constitutes Zero order resonator or single order resonator, the
Two Departments of Radiation 170 constitute Zero order resonator or single order resonator, and wherein, the first Department of Radiation 110 is humorous with the second Department of Radiation 170
Center of percussion frequency of heart is different.
According to a kind of form of implementation of the disclosure, the first Department of Radiation 110 has the first reactance parameter and the first mid frequency,
Second Department of Radiation 170 has the second reactance parameter and the second mid frequency, described first reactance parameter and described second reactance ginseng
Number be adjusted so that described first mid frequency and the second mid frequency near and produce fusion, to widen described antenna assembly
The beamwidth of antenna.
Fig. 4 schematically shows the folding line antenna 151 of the first Department of Radiation according to the disclosure.Folding line antenna 151
Be the operation wavelength being smaller in size than antenna assembly, and folding line antenna 151 constitutes the left-hand unit of the first Department of Radiation 110,
Because described folding line antenna 151 produces left hand inductance, wherein, folding line antenna 151 is connected between main antenna branch.Fig. 4
The left side is the schematic diagram of folding line antenna 151, and the right is the schematic diagram of its equivalent Straight Wire Antenna.It can be seen that folding line
Effective electrical length of antenna 151 is much larger than straight right antenna, thus improves radiation impedance under conditions of keeping size constancy,
Provide the probability saving the match circuit bringing high loss.Improve under conditions of improving radiation impedance and avoiding loss
Radiation efficiency and gain.The size of folding line antenna much smaller than operation wavelength, for example, operation wavelength 1/10, be then able to by
It is fabricated to the LHM of negative index, provides left hand inductance this its for antenna assembly.Transmission in this folding line antenna
Electric field has zero phase-shift, and amplitude is equal and phase place is identical the most everywhere.This zero phase shift makes folding line antenna 151 and PIFA antenna
On the one hand the 141 right-hand man's composite constructions constituted make transmitted electromagnetic wavelength distance fidelity, and on the other hand emulation proof makes
Obtain this PIFA antenna 141 and there is the omnidirectional radiation characteristic being similar to monopole antenna.Due to the perfect lens effect of left-handed configuration,
It assembles electromagnetic wave, further increases radiation efficiency.
Left-handed configuration in second Department of Radiation 170 can also be folding line antenna 151, wherein, and the second Department of Radiation 170 curved
Broken line antenna 151 aligns with the folding line antenna 151 in the first Department of Radiation 110, and is collectively forming double folding line sky with the latter
Line.In balanced mode, in two Straight Wire Antennas that dual meander line antenna equivalence goes out, the sense of current is contrary, then in balanced mode
Global radiation impedance improves, it is to avoid must use the match circuit to cause the fraud of considerable loss in turn owing to antenna impedance is little
End.In unbalanced mode, in two Straight Wire Antennas that dual meander line antenna equivalence goes out, the sense of current is identical.And utilize balance
And reactive component can be offset in the mutually left and right between unbalanced mode, improves the beamwidth of antenna further.It addition, by institute above
Joint number, the size etc. of the regulation each folding line antenna stated itself, each folding line antenna can have the work frequency of oneself
Rate.Interaction between different folding lines forms again the 3rd operating frequency.Therefore dual meander line antenna goes for such as
The communicating requirement of the multibands such as WiFi, GSM, WLAN.
The multiple modification of folding line antenna 151 can be used, including accordion fold line in other preferred implementing form
Antenna, three-dimensional folding line antenna, gradual change type folding line antenna or row ripple folding line antenna etc..Fold what folding line antenna referred to
Being by the docking of two traditional folding line antenna end, thus its ohmage becomes original 2 times, radiation resistance becomes the most original
4 times.Because by formula (1), radiation resistance increment is appreciated that radiation efficiency is improved more than ohmage increment.
Wherein, η is radiation efficiency, RrIt is radiation resistance, RIIt it is ohmage.Three-dimensional folding line antenna can be fully sharp
With space, i.e. surround annular four times with by a traditional bending line antenna along radiating side bending.Thus in antenna properties the most very
Antenna size is reduced under conditions of big change.Gradual change type folding line antenna and row ripple folding line antenna are respectively provided with multiple resonance points
The characteristic become with frequency with radiation direction.
In a form of implementation of the disclosure, the second Department of Radiation 170 includes microstrip antenna, and described microstrip antenna is added
Having carried left hand inductance and left-handed capacitors, wherein, described left hand inductance is by the short branch line of the antenna terminal of described microstrip antenna
Produce, and described left-handed capacitors is produced by interdigital capacitor.
Fig. 5 schematically shows the Zero order resonator equivalent circuit of the first Department of Radiation 110 into right-hand man's composite construction.
Wherein use ENG (Epsilon Negative Transmission Line negative permittivity transmission line) lumped parameter model.
In the illustrated embodiment, the only dielectric constant of the left-handed configuration of the first Department of Radiation 110 is negative, forms so-called ENG
(Epsilon Negative Transmission Line negative permittivity transmission line), it is the simplification of right-hand man's composite construction
Form.In the case left-handed configuration be incorporated to be equivalent in transmission-line equivalent circuit with parallel way load left hand inductance.
Right hand electric capacity CRAnd loss resistanceProduced by PIFA antenna 141 itself, the left hand inductance L in parallel with themL
It is to be produced by the folding line antenna 151 being connected to PIFA antenna 141 inside configuration.
The admittance of this equivalent circuit diagram is:
Y=j (ω CR-1/ωLL) (2)
Resonant frequency is:
For the Zero order resonator of two ends open circuit ENG transmission line, its non-loaded quality factor q value is
Visible, the resonant frequency of Zero order resonator only with shunt inductance LLWith shunt capacitance CRRelevant, by regulation wherein
Individual or both just can adjust resonance point.It addition, bandwidth can also be by increasing shunt inductance LLOr reduce shunt capacitance CR
And expand.This breaches antenna size that Chu-limit defined by formula (6) to quality factor, thus the restriction to bandwidth.Public
N in formula represents that what equivalent circuit diagram represented is an infinitesimal of antenna.
Wherein r representative antennas size.Therefore, this right-hand man's composite construction PIFA antenna can keep even minification
The little broadened bandwidth of condition.λ represents the wavelength of aerial signal.
In order to obtain bigger radiation efficiency and radiation gain, multiple first Departments of Radiation can be connected in series.Each
One Department of Radiation or the second Department of Radiation have respective resonance center frequeH, so that antenna assembly has adaptation different operating frequency
Multiple resonance center frequeHs.Such as, described antenna assembly includes multiple first Department of Radiation, between the plurality of first Department of Radiation
Electric coupling, each first Department of Radiation has respective resonance center frequeH, so that described antenna assembly has the different work of adaptation
Multiple resonance center frequeHs of working frequency.
It should be noted that the electromagnetic wave phase place propagation constant in right-hand man's composite construction can be just, zero or negative, according to
The dispersion relation that Bloch theorem draws understands, and when phase propagation constant is zero or negative, resonance wavelength tends to infinitely great, now
Antenna size is no longer limited by resonant frequency.Require to be mainly concerned with following tripartite currently for the performance advantage of antenna
Face, namely: radiation gain, bandwidth of operation and degree of miniaturization.As it has been described above, the work of the antenna assembly 100 according to the disclosure
Bandwidth is widened by adjusting resonance center frequeH.Left and right owing to antenna size is no longer limited by resonant frequency, in the disclosure
Hands composite construction no longer can be required to be transmission wavelength half limited by traditional, such as microstrip antenna patch length again, but
Can be made to the least.Understand gain according to formula (7) and depend on efficiency:
G=η × D (7),
Wherein G is gain, and η is efficiency, and D is directivity.
Therefore, in order to obtain bigger radiation efficiency and radiation gain, multiple first Departments of Radiation can be connected in series.
Fig. 6 schematically shows the single order resonance of the first Department of Radiation 110 of the right-hand man's composite construction according to the disclosure
Device equivalent circuit.If by right hand electric capacity in parallel, left hand inductance and loss electricity in equivalent circuit diagram as shown in Figure 5
Be incorporated to right hand inductance again in the Zero order resonator that resistance is constituted, then the first Department of Radiation is changed into single order resonator from Zero order resonator.
Wherein, traditional right-handed transmission line is typically equivalent to the circuit of series inductance and shunt capacitance, but a bit of in micronized
In transmission line model, the connection in series-parallel of inductance with equivalency transform, therefore can obtain the right hand electricity of parallel connection in single order resonator
Sense, in order to derive.
The equivalent parallel inductance L of this equivalent circuit diagramSFor:
LS=1/ (1/LL+1/LR) (8)
Resonant frequency is:
According to resonance theory, when the electric energy stored is equal to the magnetic energy stored, single order mode of resonance occurs, and its nonloaded Q is
Again it can be seen that in this single order resonator, bandwidth is still the most relevant with reactance parameter.This characteristic is with above
Zero order resonator is equally owing to the propagation constant of right-hand man's composite construction is for zero or tend to endless for resonance wavelength time negative,
Also it is therefore to breach Chu-limit.After tested, according to the antenna assembly 100 of the disclosure can be equivalent to single order humorous
Shaking and increase by 22% compared to tradition right hand antenna in low frequency part relative bandwidth in the case of device, HFS relative bandwidth increases
5%.
Fig. 7 schematically shows the radiating surface dorsal view of the antenna assembly 100 according to the disclosure.This dorsal view shows
The second Department of Radiation 170 as the ingredient of antenna assembly 100.Described second Department of Radiation 170 includes constituting right hand configurations
Conventional transmission line and constitute the defect photogrammetry resonance ring 180 of left-handed configuration, described defect photogrammetry resonance ring 180 includes being etched in and connects
At least one split ring resonator in floor, at least one split ring resonator described is nested with one another, wherein, each split ring resonator
Ring body produce left hand inductance and opening and produce left-handed capacitors, wherein, described second Department of Radiation also includes being arranged in described
The conduction band with gap on defect photogrammetry resonance ring, described defect photogrammetry resonance ring and described conduction band capacitive couplings.Permissible
See, inside transmission line structure, be disposed with multipair complementary openings resonant ring 181.It is for by etching on metal floor
, the most referred to as defect photogrammetry resonance ring.These complementary openings resonant rings 181 define left hand inductance, with conventional transmission line one
Rise and constitute right-hand man's composite construction Department of Radiation.The only Department of Radiation in front is connected with distributing point, the Department of Radiation at this back side with just
There is near field electric coupling in the Department of Radiation being made up of PIFA antenna 141 and folding line inductance in face, thus also transmits electromagnetic wave.So
Structure also eliminate such as short circuit through hole, short circuit nail arrangements of electric connection, further reduce loss.
Fig. 8 schematically shows complementary openings resonant ring 181 structure of the second Department of Radiation 170 according to the disclosure.Just
For monocycle, ring body constitutes left hand inductance, and opening constitutes left-handed capacitors, and single radial cut can be formed the magnetic couple needed for resonance
The electric dipole moment that polar moment has a negative impact.Make the ring that opening direction is contrary the most outside, thus offset inside and open
The electric dipole moment of mouth.Monocycle or three rings are also feasible.It can further be seen that complementary openings resonant ring 7 is arranged above conduction band, lead
Band forms capacitive couplings with complementary openings resonant ring.
A form of implementation according to the disclosure, antenna assembly 100 includes multiple first Department of Radiation 110, the plurality of
Electric coupling between one Department of Radiation 110, each first Department of Radiation 110 has respective resonance center frequeH, so that described antenna
Device 100 has the multiple resonance center frequeHs adapting to different operating frequency.
A form of implementation according to the disclosure, antenna assembly 100 includes multiple second Department of Radiation 170, the plurality of
Two Department of Radiation 170 electric coupling, each second Department of Radiation 170 has respective resonance center frequeH, so that antenna assembly 100 has
There are the multiple resonance center frequeHs adapting to different operating frequency.Thus can carry out on antenna assembly 100 multiband work and
Multiple resonant frequency can be made close by regulating the first Department of Radiation 110 and/or the reactance parameter of the second Department of Radiation 170,
Thus the resonance band of the plurality of resonant frequency merges, and generally forms bigger bandwidth.
Fig. 9 schematically shows right-hand man's composite junction at dielectric-slab 101 back side of an embodiment according to the disclosure
The equivalent circuit diagram of structure.The right hand inductance L wherein connectedRWith right hand electric capacity C in parallelRBy traditional right-handed transmission line, i.e. conduction band
Itself produces, the left-handed capacitors C of series connectionLWith left hand inductance L in parallelLProduced by complementary openings resonant ring 181.This structure also accords with
The characteristic that crossed belt width is only determined by reactance parameter.
Dielectric-slab 101 front, right-hand man that i.e. the PIFA antenna 141 in radiating surface front and folding line antenna 151 are constituted
The center resonant frequency of Department of Radiation can with dielectric-slab 101 back side, i.e. the radiating surface back side by conventional transmission line and and defect
The center resonant frequency of right-hand man's Department of Radiation that photogrammetry resonance ring is constituted is different, work in the most respectively 2.4G conventional for WiFi and
5G, it is achieved that two-band PIFA antenna.By regulating the reactance parameter of the two right-hand man's Department of Radiation, it is possible to so that wherein the heart is humorous
Vibration frequency is close to each other and makes its respective-4dB frequency band effective integration become a ultra-wideband wider than respective frequency band
Band.
An antenna section is the most only represented above, in order to Enhanced Radiation Reduced Blast hinders with right-hand man's Department of Radiation of equivalent circuit diagram diagram
Resist and then improve radiation efficiency and gain, and in order to realize the PIFA antenna of more multiple resonance points, it is of course possible to use the most
Department of Radiation array.
Being drawn by simulation calculation, the low frequency part relative bandwidth of the antenna assembly of the disclosure is compared to conventional PIFA antennas
Increasing by 22%, HFS increases by 5%.
Figure 10 a schematically shows the electronic equipment 200 according to the disclosure, and it includes the antenna assembly according to the disclosure
100.This electronic equipment 200 includes: signal source 210, and it produces signal, this signal for example, radiofrequency signal；According to the disclosure
Antenna assembly 100, antenna assembly 100 and signal source 210 electric coupling, for the signal amplitude of signal source is shot out, antenna assembly
100 go back reception antenna signal；Earth plate 160, it is connected to the earth terminal 130 in antenna assembly 100.First Department of Radiation 110 can
To include that any those skilled in the art such as PIFA antenna, monopole antenna, microstrip antenna, loop aerial think rational sky
Line.First Department of Radiation 110 can be arranged on the side of antenna assembly 100.As shown in fig. lob, antenna assembly 100 is exemplarily
Including the PIFA antenna 141 being arranged on pcb board, it is positioned at the top of electronic equipment, and two of antenna assembly 100 lower right corner connect
The earth terminal 130 of terminal respectively ground connection and the feed end 130 connecing the signal of telecommunication.Earth terminal 130 and feed end 120 can also be arranged
Other position between PIFA antenna and pcb board, the such as upper left corner, the upper right corner etc..Use the antenna assembly according to the disclosure
The resonance point of the electronic equipment 200 of 100 increases, and wants being adapted to be applicable to the communication of the multibands such as such as WiFi, GSM, WLAN
Ask.As required, it is also possible to make it merge by arranging the resonance point of antenna assembly 100 position relative to each other thus obtain
Obtain bigger bandwidth, to reduce the distortion of communication signal, and make communication signal higher.This electronic equipment 200 can be example
Such as the mobile communication equipment for mobile phone, palm PC, wearable communication apparatus etc..
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and the electronics of foregoing description
Implementing of antenna assembly 100 in equipment 200, is referred to the diagram in the embodiment of aforementioned antenna device 100 and comes real
Existing, do not repeat them here.Furthermore, it is possible to select the detailed description of the invention of said antenna device 100 flexibly, and do not affect these public affairs
The realization of the purpose opened.
The above, the only detailed description of the invention of the disclosure, but the protection domain of the disclosure is not limited thereto, and any
Those familiar with the art, in the technical scope that the disclosure discloses, can readily occur in change or replace, should contain
Cover within the protection domain of the disclosure.Therefore, the protection domain of the disclosure should described be as the criterion with scope of the claims.
Reference numerals list
100 antenna assemblies
110 first Departments of Radiation
120 feed ends
130 first earth terminals
140 main antenna branches
150 left-hand unit
141 PIFA antennas
151 folding line antennas
160 earth plates
170 second Departments of Radiation
131 second earth terminals
101 dielectric-slabs
CRRight hand electric capacity
Loss resistance
LLLeft hand inductance
180 defect photogrammetry resonance rings
181 complementary openings resonant rings
200 electronic equipments
210 signal sources
Claims (14)
1. an antenna assembly, comprising:
First Department of Radiation, for radiation and reception antenna signal,
Feed end, for described first Department of Radiation is couple to signal source,
First earth terminal, for described first Department of Radiation being connected to ground,
Wherein, described first Department of Radiation includes: main antenna branch and the left-hand unit being connected with this main antenna branch, described main sky
Line branch and described left-hand unit constitute right-hand man's composite construction.
Antenna assembly the most according to claim 1, it is characterised in that described antenna assembly also includes:
Second Department of Radiation, described second Department of Radiation and described first Department of Radiation near-field coupling, be used for radiating and receive described antenna
Signal,
Second earth terminal, for described second Department of Radiation being connected to ground,
Wherein, described second Department of Radiation is right-hand man's composite construction.
Antenna assembly the most according to claim 2, it is characterised in that described antenna assembly also includes having first and
The dielectric-slab of two, wherein, described first with described second opposed,
Wherein, described first Department of Radiation is arranged on first of described dielectric-slab, and described second Department of Radiation is arranged in described
The position corresponding with described first Department of Radiation on two.
Antenna assembly the most according to claim 2, it is characterised in that described first Department of Radiation constitute Zero order resonator or
Single order resonator, described second Department of Radiation constitutes Zero order resonator or single order resonator, wherein, described first Department of Radiation and institute
The resonance center frequeH stating the second Department of Radiation is different.
5. according to the antenna assembly described in claim 2 or 4, it is characterised in that described first Department of Radiation has the first reactance ginseng
Number and the first mid frequency, described second Department of Radiation has the second reactance parameter and the second mid frequency, described first reactance ginseng
Number and described second reactance parameter be adjusted so that described first mid frequency and the second mid frequency near and produce fusion,
To widen the beamwidth of antenna of described antenna assembly.
6. according to the antenna assembly described in claim 1 or 3, it is characterised in that the left-hand unit of described first Department of Radiation is chi
The folding line antenna of the very little operation wavelength less than antenna assembly, described folding line antenna produces left hand inductance, wherein, folding line sky
Line is connected between main antenna branch.
7. according to the antenna assembly described in Claims 2 or 3, it is characterised in that described second Department of Radiation includes that defect ground is humorous
Shake ring, and described defect photogrammetry resonance ring includes at least one split ring resonator being etched in earth plate, described at least one open
Mouth resonant ring is nested with one another, and wherein, the ring body of each split ring resonator produces left hand inductance and opening produces left-handed capacitors,
Wherein, described second Department of Radiation also includes the conduction band with gap being arranged on described defect photogrammetry resonance ring, described defect
Photogrammetry resonance ring and described conduction band capacitive couplings.
Antenna assembly the most according to claim 6, it is characterised in that described second Department of Radiation includes producing left hand inductance
Folding line antenna, wherein, the folding line antenna of described second Department of Radiation aligns with the folding line antenna in described first Department of Radiation.
Antenna assembly the most according to claim 6, it is characterised in that folding line antenna is accordion fold wire antenna, stands
A kind of antenna in body formula folding line antenna, row ripple folding line antenna or folding line slot antenna.
10. according to the antenna assembly described in Claims 2 or 3, it is characterised in that described second Department of Radiation includes microstrip antenna,
Being loaded left hand inductance and left-handed capacitors on described microstrip antenna, wherein, described left hand inductance is by the sky of described microstrip antenna
The short branch line of line terminal produces, and described left-handed capacitors is produced by interdigital capacitor.
11. antenna assemblies according to claim 1, it is characterised in that described antenna assembly includes multiple first Department of Radiation,
Electric coupling between the plurality of first Department of Radiation, each first Department of Radiation has respective resonance center frequeH, so that described
Antenna assembly has the multiple resonance center frequeHs adapting to different operating frequency.
12. according to the antenna assembly described in claim 2 or 11, it is characterised in that described antenna assembly includes multiple second spoke
Penetrating portion, the plurality of second Department of Radiation electric coupling, each second Department of Radiation has respective resonance center frequeH, so that described
Antenna assembly has the multiple resonance center frequeHs adapting to different operating frequency.
13. antenna assemblies according to claim 1, it is characterised in that described main antenna branch is the branch of PIFA antenna.
14. 1 kinds of electronic equipments, including:
Signal source, it produces radiofrequency signal,
Antenna assembly as according to any one of claim 1 to 12, described antenna assembly and signal source electric coupling, for believing
The radiofrequency signal in number source radiate, described antenna assembly also reception antenna signal,
Earth plate, it is connected to each earth terminal in described antenna assembly.
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| CN201610698434.2A CN106299644B (en) | 2016-08-19 | 2016-08-19 | Antenna assembly and electronic equipment including the antenna assembly |
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| CN109755727A (en) * | 2018-12-29 | 2019-05-14 | 华为技术有限公司 | Antenna module and mobile terminal |
| CN110649375A (en) * | 2018-06-26 | 2020-01-03 | 中兴通讯股份有限公司 | Mobile terminal antenna and mobile terminal |
| CN112964936A (en) * | 2021-01-30 | 2021-06-15 | 天津理工大学 | Miniature antenna sensor sensitive to dielectric constant of surrounding environment |
| CN113131200A (en) * | 2021-04-21 | 2021-07-16 | 广东工业大学 | Omnidirectional circularly polarized spiral antenna with folding structure |
| WO2021164512A1 (en) * | 2020-02-20 | 2021-08-26 | Oppo广东移动通信有限公司 | Three-dimensional antenna and electronic device |
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| CN113764862A (en) * | 2021-09-03 | 2021-12-07 | 北京有竹居网络技术有限公司 | Antenna and wearable device |
| CN113764862B (en) * | 2021-09-03 | 2024-03-01 | 北京有竹居网络技术有限公司 | Antenna and wearable device |
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