CN104993235B - A kind of antenna assembly and electronic equipment - Google Patents
A kind of antenna assembly and electronic equipment Download PDFInfo
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- CN104993235B CN104993235B CN201510325362.2A CN201510325362A CN104993235B CN 104993235 B CN104993235 B CN 104993235B CN 201510325362 A CN201510325362 A CN 201510325362A CN 104993235 B CN104993235 B CN 104993235B
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Abstract
The invention discloses a kind of antenna assembly and electronic equipment, the antenna assembly includes: antenna；First stage circuit units, first stage circuit units include an inductance, and the inductance has first end and second end, and the first end is connected with the antenna；Matching unit has third end and the 4th end, and the third end is connected with the second end, the 4th end ground connection；Wherein, when the electronic equipment needs to receive or sends the first signal, first stage circuit units are made to generate the first electric current corresponding with the first current frequency of first signal, and then make the antenna and the metal plate being arranged in the electronic equipment connecting with the antenna that resonance occur under the action of first electric current, the first radiation signal corresponding with first signal is generated, so that first signal is received or sent by the electronic equipment.
Description
Technical field
The present invention relates to electronic technology field, in particular to a kind of antenna assembly and electronic equipment.
Background technique
With the continuous development of science and technology, electronic equipment has also obtained development at full speed, becomes people's daily life
Necessity.In order to meet the use demand of user, the function of electronic equipment is more and more, so that the structure of electronic equipment is more next
It is more complicated, to keep antenna institute energy the space occupied in electronic equipment smaller and smaller；And the communications band in electronic equipment exists
When the low-frequency range of 700-960MHz, electromagnetic wavelength is long, and in order to enable the antenna to generate resonance, the length of antenna will at least reach
To the 1/4 of electromagnetic wavelength, this forms huge contradiction with the day space of lines that current electronic equipment can provide.
In the prior art, for above-mentioned contradiction, a kind of switch adjustable antenna is proposed, which utilizes rearrangeable switch,
Be separately connected different inductively or capacitively equal elements and form resonance circuit, according to the frequency for receiving signal select corresponding capacitor or
Inductance component so that the metal floor of electronic equipment generates radiation signal under the action of resonance circuit, and passes through accurate electricity
Container piece carries out impedance matching to radiation signal, and then radiation signal is enable to be received by electronic equipment.
In realizing the embodiment of the present application during technical solution, the discovery prior art exists as follows present inventor
Technical problem:
Since the antenna of electronic equipment in the prior art needs accurate capacitor element to carry out impedance matching, in this way, when
With capacitor element there are when some little deviations, the impedance of radiation signal and the impedance mismatch of signal receiver will result in, from
And prevent signal receiver from receiving the signal well, so, there is the matching to antenna in electronic equipment in the prior art
The high technical problem of the required precision of device.
Further, there is the high technology of the required precision of the matching device to antenna due to electronic equipment in the prior art
Problem, in this way, when there are the performances that when error, will affect electronic equipment reception signal for the precision of matching device, so, existing skill
Electronic equipment in the art technical problem unstable there are the performance of antenna.
Summary of the invention
The embodiment of the present application provides a kind of antenna assembly and electronic equipment, deposits for solving electronic equipment in the prior art
In the high technical problem of the required precision of the matching device to antenna, realize that the technology for reducing the required precision to matching device is imitated
Fruit.
On the one hand the embodiment of the present application provides a kind of antenna assembly, be applied in an electronic equipment, comprising:
Antenna；
First stage circuit units, first stage circuit units include an inductance, and the inductance has first end and the
Two ends, the first end are connected with the antenna；
Matching unit has third end and the 4th end, and the third end is connected with the second end, the 4th termination
Ground；
Wherein, when the electronic equipment needs to receive the first signal, make first stage circuit units generate with it is described
Corresponding first electric current of first current frequency of the first signal, and then make the antenna and the setting connecting with the antenna in institute
It states the metal plate in electronic equipment and occurs resonance under the action of first electric current, generate corresponding with first signal the
One radiation signal, the matching unit is by adjusting corresponding first signal parameter of first radiation signal, so that described the
The port parameter of one signal parameter and the radio receiver of the electronic equipment matches, and then enables the first signal quilt
The electronic equipment receives；
When the electronic equipment needs to send second signal, generate first stage circuit units and second letter
Number corresponding second electric current of the second current frequency, and then make the antenna and the metal plate in the effect of second electric current
Lower generation resonance generates the second radiation signal corresponding with the second signal, and it is described to pass through second radiation signal
Antenna transmitting.
Optionally, first stage circuit units further include the adjustable electric for being connected in parallel on the first end and the second end
Hold；
Wherein, when the electronic equipment needs to receive first signal, pass through the detection unit of the electronic equipment
First current frequency of first signal is detected, the control unit of the electronic equipment is based on first current frequency
The current capacitor value for adjusting the tunable capacitor is in the first capacitor value corresponding with first current frequency, so that described
Primary circuit unit generates first electric current；
When the electronic equipment needs to send the second signal, the second signal is detected by the detection unit
Second current frequency, described control unit adjusts the current capacitive reactance of the tunable capacitor based on second current frequency
Value is in the second capacitor value corresponding with second current frequency, so that first stage circuit units generate second electricity
Stream.
Optionally, when the antenna is in low frequency operation state, the current capacitor value is specifically less than pre- equal to one
If the third capacitor value of threshold value, so that corresponding first impedance of first stage circuit units is in inductive, and then make the electricity
Sense can be tuned the antenna.
Optionally, when the antenna is in high-frequency work state, the current capacitor value is specially to be greater than described preset
4th capacitor value of threshold value so that corresponding second impedance of first stage circuit units is in capacitive character, and then eliminates the electricity
Feel the high inhibition effect in the high-frequency work state.
Optionally, when the matching unit is specially a matching inductance, the matching unit is specifically used for according to
The port Impedance value of radio receiver adjusts the corresponding first signal impedance value of first radiation signal, so that described first
Signal impedance value matches with the port Impedance value.
It optionally, is specially by least one matching inductance and at least one matching capacitance by simultaneously in the matching unit
Join or be composed in series a matching network when, the matching unit is specifically used for according to the port power of the radio receiver
Corresponding first signal power of first radiation signal is adjusted, so that first signal power and the port power phase
Match；Or
The matching unit is specifically used for adjusting first radiation according to the port Impedance value of the radio receiver
The corresponding first signal impedance value of signal, so that the first signal impedance value matches with the port Impedance value.
Optionally, the first length of the antenna is less than 1/4 or institute of the corresponding first wave length of first radiation signal
The first length for stating antenna is less than the 1/4 of the corresponding second wave length of second radiation signal.
On the other hand the embodiment of the present application provides a kind of electronic equipment, comprising:
Shell；
Metal plate is arranged in the shell；
Antenna assembly is arranged in the shell, is connected with the metal plate, the antenna assembly specifically includes: antenna；
First stage circuit units, first stage circuit units include an inductance, and the inductance has first end and second end, described
First end is connected with the antenna；Matching unit has third end and the 4th end, and the third end is connected with the second end,
The 4th end ground connection；
Wherein, when the electronic equipment needs to receive the first signal, the antenna and first stage circuit units are produced
Raw the first electric current corresponding with the first current frequency of first signal, and then make the antenna and the metal plate described
Resonance occurs under the action of first electric current, generates the first radiation signal corresponding with first signal, the matching unit is logical
Corresponding first signal parameter of first radiation signal is overregulated, so that first signal parameter and the electronic equipment
The port parameter of radio receiver matches, and then first signal is enable to be received by the electronic equipment；
When the electronic equipment needs to send second signal, the antenna is generated with first stage circuit units and institute
Corresponding second electric current of the second current frequency of second signal is stated, and then makes the antenna and the metal plate in second electricity
Resonance occurs under the action of stream, generates the second radiation signal corresponding with the second signal, and make second radiation signal
Emitted by the antenna.
Optionally, when the electronic equipment, which further includes, frequency detector and controller, first stage circuit units
It further include the tunable capacitor for being connected in parallel on the first end and the second end；
Wherein, when the electronic equipment needs to receive first signal, by described in frequency detector detection
First current frequency of first signal, the controller adjust working as the tunable capacitor based on first current frequency
Preceding capacitor value is in the first capacitor value corresponding with first current frequency, so that described in first stage circuit units generation
First electric current；
When the electronic equipment needs to send the second signal, second letter is detected by the frequency detector
Number second current frequency, the controller adjusts the current capacitive reactance of the tunable capacitor based on second current frequency
Value is in the second capacitor value corresponding with second current frequency, so that first stage circuit units generate second electricity
Stream.
Optionally, when the antenna is in low frequency operation state, the current capacitor value is specifically less than pre- equal to one
If the third capacitor value of threshold value, so that corresponding first impedance of first stage circuit units is in inductive, and then make the electricity
Sense can be tuned the antenna.
Optionally, when the antenna is in high-frequency work state, the current capacitor value is specially to be greater than described preset
4th capacitor value of threshold value so that corresponding second impedance of first stage circuit units is in capacitive character, and then eliminates the electricity
Feel the high inhibition effect in the high-frequency work state.
Optionally, when the matching unit is specially a matching inductance, the matching unit is specifically used for according to
The port Impedance value of radio receiver adjusts the corresponding first signal impedance value of first radiation signal, so that described first
Signal impedance value matches with the port Impedance value.
It optionally, is specially by least one matching inductance and at least one matching capacitance by simultaneously in the matching unit
Join or be composed in series a matching network when, the matching unit is specifically used for according to the port power of the radio receiver
Corresponding first signal power of first radiation signal is adjusted, so that first signal power and the port power phase
Match；Or
The matching unit is specifically used for adjusting first radiation according to the port Impedance value of the radio receiver
The corresponding first signal impedance value of signal, so that the first signal impedance value matches with the port Impedance value.
Optionally, the first length of the antenna is less than 1/4 or institute of the corresponding first wave length of first radiation signal
The first length for stating antenna is less than the 1/4 of the corresponding second wave length of second radiation signal.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit:
One, due to the technical solution in the embodiment of the present application, using the first stage circuit units, first stage circuit units
It include an inductance, the inductance is with first end and second end, the technological means that the first end is connected with the antenna, this
Sample, inductance are attached in series with antenna, and the capacitive of nature is offset using the perception of inductance, form series resonance,
Since series inductance can effectively eliminate the capacitive of antenna itself, so, matching unit is only to the low-and high-frequency of current resonance at this time
Optimization function is played, the device of matching unit will not bring biggish deviation to the impedance matching of entire antenna, without
Accurate capacitor element is just able to achieve impedance optimization, so, it efficiently solves electronic equipment in the prior art and exists to antenna
Matching device the high technical problem of required precision, realize the technical effect for reducing the required precision to matching device.
Two, due to the technical solution in the embodiment of the present application, using the first stage circuit units, first stage circuit units
It include an inductance, the inductance is with first end and second end, the technological means that the first end is connected with the antenna, this
Sample, inductance are attached in series with antenna, and the capacitive of nature is offset using the perception of inductance, form series resonance,
Since series inductance can effectively eliminate the capacitive of antenna itself, so, matching unit is only to the low-and high-frequency of current resonance at this time
Optimization function is played, the device of matching unit will not bring biggish deviation to the impedance matching of entire antenna, and then will not shadow
The performance that electronic equipment receives signal is rung, so, it efficiently solves electronic equipment in the prior art there are the performances of antenna not
Stable technical problem realizes the technical effect for improving the stability of antenna performance.
It three, further include being connected in parallel on institute using first stage circuit units due to the technical solution in the embodiment of the present application
The technological means of the tunable capacitor of first end and the second end is stated, in this way, passing through electronics when antenna is when low frequency operation
Tunable capacitor is transferred to low capacitance by the control unit of equipment, at this point, tunable capacitor is similar to open a way, meets antenna low frequency operation
Impedance matching；When antenna is when high-frequency work, tunable capacitor is transferred to high capacity by control unit, at this point, adjustable electric
Appearance is similar to access, eliminates series inductance in the high inhibition effect of high frequency, and then nor affect on the high-frequency work of antenna, so,
The technical effect of high and low frequency work requirements can be met simultaneously by realizing an antenna assembly.
Four, due to the technical solution in the embodiment of the present application, first spoke is less than using the first length of the antenna
The first length for penetrating 1/4 or the antenna of the corresponding first wave length of signal is less than corresponding second wave of second radiation signal
Long 1/4 and first stage circuit units is made to generate the first electric current corresponding with the first current frequency of first signal,
And then make the antenna and the metal plate being arranged in the electronic equipment connecting with the antenna in first electric current
Effect is lower to occur resonance, the technological means of the first radiation signal corresponding with first signal is generated, in this way, due to antenna
Length is less than the 1/4 of signal wavelength, i.e. the length of antenna is short electrical length, and antenna assembly, which uses, utilizes match circuit and ground template die
Formula radiation is to generate the non-resonant manner of relatively good radiation, and therefore, antenna assembly is realizing the same of preferable radiation effect
When, antenna length is further shortened, the technical effect for saving electronic device space is realized.
Detailed description of the invention
Technical solution in order to illustrate the embodiments of the present invention more clearly or in prior art, below retouches embodiment
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention one
A little embodiments.
Fig. 1 is the structural schematic diagram of the first better embodiment of the application antenna assembly；
Fig. 2 is that the schematic diagram at the top of electronic equipment is arranged in the first better embodiment of the application antenna assembly；
Fig. 3 is that the first stage circuit units 20 include a tunable capacitor in the first better embodiment of the application antenna assembly
22 structural schematic diagram；
Fig. 4 is the structural schematic diagram of the second better embodiment of the application electronic equipment.
Specific embodiment
The embodiment of the present application provides a kind of antenna assembly and electronic equipment, deposits for solving electronic equipment in the prior art
In the high technical problem of the required precision of the matching device to antenna, realize that the technology for reducing the required precision to matching device is imitated
Fruit.
Technical solution in the embodiment of the present application is in order to solve the above technical problems, general thought is as follows:
A kind of antenna assembly is applied in an electronic equipment, comprising:
Antenna；
First stage circuit units, first stage circuit units include an inductance, and the inductance has first end and the
Two ends, the first end are connected with the antenna；
Matching unit has third end and the 4th end, and the third end is connected with the second end, the 4th termination
Ground；
Wherein, when the electronic equipment needs to receive the first signal, make first stage circuit units generate with it is described
Corresponding first electric current of first current frequency of the first signal, and then make the antenna and the setting connecting with the antenna in institute
It states the metal plate in electronic equipment and occurs resonance under the action of first electric current, generate corresponding with first signal the
One radiation signal, the matching unit is by adjusting corresponding first signal parameter of first radiation signal, so that described the
The port parameter of one signal parameter and the radio receiver of the electronic equipment matches, and then enables the first signal quilt
The electronic equipment receives；
When the electronic equipment needs to send second signal, generate first stage circuit units and second letter
Number corresponding second electric current of the second current frequency, and then make the antenna and the metal plate in the effect of second electric current
Lower generation resonance generates the second radiation signal corresponding with the second signal, and it is described to pass through second radiation signal
Antenna transmitting.
In the above-mentioned technical solutions, using the first stage circuit units, first stage circuit units include an inductance, institute
Inductance is stated with first end and second end, the technological means that the first end is connected with the antenna, in this way, inductance and antenna with
Concatenated mode is attached, and the capacitive of nature is offset using the perception of inductance, series resonance is formed, since series inductance can have
The capacitive of the elimination antenna itself of effect, so, matching unit only plays optimization function to the low-and high-frequency of current resonance at this time, matches
The device of unit will not bring biggish deviation to the impedance matching of entire antenna, just can without accurate capacitor element
Realize impedance optimization, so, the precision for efficiently solving electronic equipment in the prior art in the presence of the matching device to antenna is wanted
High technical problem is sought, realizes the technical effect for reducing the required precision to matching device.
In order to better understand above scheme, technical solution of the present invention is done in detail below by attached drawing and specific embodiment
Thin explanation, it should be understood that the specific features in the embodiment of the present application and embodiment are to the detailed of technical solution of the present invention
Illustrate, rather than the restriction to technical solution of the present invention, in the absence of conflict, in the embodiment of the present application and embodiment
Technical characteristic can be combined with each other.
Embodiment one
As shown in Figure 1, being the structural schematic diagram of the first better embodiment of the application antenna assembly.The antenna assembly is set
It sets in an electronic equipment, for receiving and emitting the wireless signal of the electronic equipment.In practical applications, the electronics is set
Standby can be laptop, tablet computer, mobile phone etc., be also possible to other electronic equipment for needing transmitting/receiving wireless signal,
This, just different one schematically illustrates.In following specific descriptions, it will come to implement the application so that the electronic equipment is mobile phone as an example
Antenna assembly in example is illustrated.
A kind of antenna assembly is applied in an electronic equipment, comprising:
Antenna 10；
First stage circuit units 20, the first stage circuit units 20 include an inductance 21, inductance 21 have first end 211 and
Second end 212, first end 211 are connected with antenna 10；
Matching unit 30 has third end 31 and the 4th end 32, and third end 31 is connected with second end 212, and the 4th end 32 connects
Ground；
Wherein, when the electronic equipment needs to receive the first signal, generate the first stage circuit units 20 and described the
Corresponding first electric current of first current frequency of one signal, and then make antenna 10 and the setting connecting with antenna 10 in the electronics
Resonance occurs under the action of first electric current for the metal plate in equipment, generates the first radiation corresponding with first signal
Signal, matching unit 30 is by adjusting corresponding first signal parameter of first radiation signal, so that first signal is joined
Several port parameters with the radio receiver of the electronic equipment match, and then enable first signal by the electronics
Equipment receives；
When the electronic equipment needs to send second signal, generate the first stage circuit units 20 and the second signal
Corresponding second electric current of the second current frequency, and then send out antenna 10 and the metal plate under the action of second electric current
Raw resonance, generates the second radiation signal corresponding with the second signal, and sends out second radiation signal by antenna 10
It penetrates.
In the specific implementation process, when the electronic equipment is mobile phone, as shown in Fig. 2, the metal plate specifically can be with
The pcb board for each functional module that be in mobile phone include, for realizing ground connection；The antenna assembly can be set on the top of mobile phone
Portion or bottom the antenna assembly can also be arranged at the top of mobile phone and mobile phone bottom simultaneously, in the embodiment of the present application,
With no restriction to the specific location of antenna assembly.By taking the antenna assembly is arranged in mobile phone bottom as an example, the antenna assembly tool
Body is divided into antenna 10 and match circuit corresponding with antenna 10, i.e. the first stage circuit units 20 and matching unit 30.Antenna 10
Specifically it can be a sheet metal, concrete shape can be set according to actual needs, in the embodiment of the present application
With no restriction.First stage circuit units 20 include mainly an inductance 21, and induction reactance value is selected according to actual needs,
First end 211 in inductance 21 is connect with antenna 10, with antenna 10 formed series system, the second end 212 of inductance 21 with match
The third end 31 of unit 30 is connected, and the 4th section 32 of matching unit 30 is connected with the metal plate, is grounded.
In the specific implementation process, in order to reduce the mobile phone space that antenna assembly occupies, the first length of antenna 10 is less than
First length of 1/4 or the antenna of the corresponding first wave length of first radiation signal is less than second radiation signal pair
The 1/4 of the second wave length answered.In general, for antenna when receiving or sending signal generation resonance, the length of antenna is at least
The 1/4 of its radiation signal wavelength is needed, such as the electromagnetic wave of 1GHz, wavelength 300mm, then in order to receive electromagnetic wave letter
Number, antenna has to generate resonance with the electromagnetic wave signal, and at this moment, the length of antenna just must be greater than being equal to 300/4=
75mm.In the embodiment of the present application, the length of antenna is set smaller than the short electrical length of the 1/4 of radiation signal wavelength, as 50mm,
25mm etc., correspondingly, the antenna assembly using disresonance form, using the common resonance of match circuit and pcb board come
Generate radiation.
In the embodiment of the present application, in order to enable the antenna assembly while in low-frequency range and high band operation, the first order
Circuit unit 20 further includes the tunable capacitor 22 for being connected in parallel on first end 211 and second end 212, as shown in Figure 3, wherein described
When electronic equipment needs to receive first signal, the institute of first signal is detected by the detection unit of the electronic equipment
The first current frequency is stated, the control unit of the electronic equipment adjusts the current of tunable capacitor 22 based on first current frequency
Capacitor value is in the first capacitor value corresponding with first current frequency, so that the first stage circuit units 20 generate described first
Electric current；
When the electronic equipment needs to send the second signal, the second signal is detected by the detection unit
Second current frequency, described control unit based on second current frequency adjust tunable capacitor 22 current capacitor value
In the second capacitor value corresponding with second current frequency, so that the first stage circuit units 20 generate second electric current.
In the specific implementation process, tunable capacitor 22 is specifically as follows BST tunable capacitor, and patch tunable capacitor (SMD) is inserted
Part tunable capacitor (DIP), or ceramic tunable capacitor, PVC tunable capacitor, air tunable capacitor etc., ordinary skill people
Member can be selected according to actual needs, in the embodiment of the present application with no restriction.When the electronic equipment is mobile phone
When, include the detection unit for detecting signal frequency in mobile phone, is matched such as signal explorer, and with the antenna assembly
Controller etc., when signal explorer has detected an electromagnetic wave signal, signal explorer can detect the electromagnetic wave automatically
The signal frequency of signal, and will test result and be sent to controller, then controller will be according to the signal frequency tune detected
The capacitor value of whole tunable capacitor, so that the first stage circuit units 20 be enable to generate the first electric current.
In the embodiment of the present application, when antenna 10 is in low frequency operation state, the current capacitor value is specifically less than
Equal to the third capacitor value of a preset threshold, so that corresponding first impedance of first stage circuit units is in inductive, in turn
The inductance is set to be tuned the antenna；When antenna 10 is in high-frequency work state, the current capacitor value tool
Body is the 4th capacitor value greater than the preset threshold, so that corresponding second impedance of the first stage circuit units is in capacitive character, into
And the inductance is eliminated in the high inhibition effect of the high-frequency work state.
In the specific implementation process, specifically there is the following two kinds implementation to the adjustment of the current capacitor value:
First way:
Continue to use above-mentioned example, and with the induction reactance value of inductance 21 be 15nH, tunable capacitor 22 is that (BST is adjustable for BST tunable capacitor
The position of minimum capacitance of capacitor is 4pF, maximum capacitor value 16pF) for, when to be tested with one waiting for the signal explorer of mobile phone
When the collection of letters, signal explorer can detect the signal frequency of the signal to be received automatically, as the signal frequency of the signal is
700MHz, then signal explorer will test result and be sent to controller, and controller judges that the signal frequency of 700MHz is low frequency,
Just the capacitance of BST tunable capacitor is adjusted to minimum value 4pF；When signal explorer detects that the signal frequency of signal to be received is
When 1710MHz, controller judges that the signal frequency of 1710MHz is high frequency, and the capacitance of BST tunable capacitor is just adjusted to maximum
Value 16pF.
The second way:
Continue to use above-mentioned example, and with the induction reactance value of inductance 21 be 15nH, tunable capacitor 22 is that (BST is adjustable for BST tunable capacitor
The position of minimum capacitance of capacitor is 4pF, maximum capacitor value 16pF) for, when to be tested with one waiting for the signal explorer of mobile phone
When the collection of letters, signal explorer can detect the signal frequency of the signal to be received automatically, as the signal frequency of the signal is
700MHz, then signal explorer will test result and be sent to controller, and controller judges that the signal frequency of 700MHz is low frequency,
Just the capacitance of BST tunable capacitor is adjusted to any one capacitance less than 8pF, since 700MHz is the antenna assembly energy
The minimum value of the low frequency signal received, so BST capacitance can be adjusted to minimum value 4pF at this time；When signal explorer is examined
When the signal frequency for measuring signal to be received is 800MHz, controller judges that the signal frequency of 800MHz is still low frequency, just will
The capacitance of BST tunable capacitor is adjusted to any one capacitance less than 8pF, since 800MHz is located in low frequency signal frequency range
Between be worth, so, at this time controller control BST tunable capacitor capacitance be adjusted to 6pF；When signal explorer detect it is to be received
When the signal frequency of signal is 1710MHz, controller judges that the signal frequency of 1710MHz is high frequency, just by BST tunable capacitor
Capacitance be adjusted to any one capacitance greater than 10pF, BST capacitance can be adjusted to 16pF at this time；When signal frequency is
When 2170MHz, the capacitance of BST tunable capacitor can be adjusted to 10pF by controller.
In the embodiment of the present application, when the first stage circuit units 20 generation resonance current, and then make antenna 10 and metal plate
It further include having matching unit 30 in the antenna assembly to advanced optimize impedance matching after generating radiation signal.Specific
In implementation process, matching unit 30 has the following two kinds specific implementation:
First way:
Matching unit 30 is specially a matching inductance, and correspondingly, matching unit 30 is specifically used for being connect according to the radio
The port Impedance value of receipts machine adjusts the corresponding first signal impedance value of first radiation signal, so that first signal impedance
Value matches with the port Impedance value.
In the specific implementation process, matching unit 30 can be an inductance, and induction reactance value can be described for 10nH, 5nH etc.
The induction reactance value of inductance can be selected according to actual needs.The antenna assembly is adjusted by the induction reactance value of the inductance
Overall impedance value, and then the impedance value for the radiation signal for generating the antenna assembly meets radio reception generator terminal in mobile phone
The impedance value range of mouthful institute's energy received signal, and then receives first signal by mobile phone.
The second way:
Matching unit 30 is specially to pass through group in parallel or series by least one matching inductance and at least one matching capacitance
At a matching network, correspondingly, matching unit 30 be specifically used for according to the port power of the radio receiver adjust institute
Corresponding first signal power of the first radiation signal is stated, so that first signal power matches with the port power；Or
Matching unit 30 is specifically used for adjusting the first radiation letter according to the port Impedance value of the radio receiver
Number corresponding first signal impedance value, so that the first signal impedance value matches with the port Impedance value.
In the specific implementation process, matching unit 30 can be the matching network being made of multiple capacitors, inductance component, electricity
The induction reactance value of sense can be for 10nH, 5nH etc., and the capacitor value of capacitor can be 2pF, 3pF etc., and those of ordinary skill in the art can be with
It is selected according to actual needs.It is traditional thread binding that the day is adjusted by the induction reactance value of the inductance and the capacitor value of the capacitor
The overall impedance value set, and then the impedance value for the radiation signal for generating the antenna assembly meets radio receiver in mobile phone
Port can the impedance value range of received signal or the signal power and mobile phone of the radiation signal for generating the antenna assembly
The reception power of middle radio receiver port matches, and then receives first signal by mobile phone.
Embodiment two
Based on inventive concept same as a kind of antenna assembly of the embodiment of the present application, as shown in figure 4, for the application second compared with
The structural schematic diagram of good embodiment electronic equipment.In practical applications, the electronic equipment can be laptop, plate
Computer, mobile phone etc. are also possible to other electronic equipment for needing to emit and receive wireless signal, here, just different one schematically illustrating.
It, will be by taking the electronic equipment be mobile phone as an example, to be illustrated in following specific descriptions.
A kind of electronic equipment, comprising:
Shell 101；
Metal plate 102 is arranged in shell 101；
Antenna assembly 103 is arranged in shell 101, is connected with metal plate 102, antenna assembly 103 specifically includes: antenna；
First stage circuit units, first stage circuit units include an inductance, and the inductance has first end and second end, described
First end is connected with the antenna；Matching unit has third end and the 4th end, and the third end is connected with the second end,
The 4th end ground connection；
Wherein, when the electronic equipment needs to receive the first signal, the antenna and first stage circuit units are produced
Raw the first electric current corresponding with the first current frequency of first signal, and then make the antenna and metal plate 102 described
Resonance occurs under the action of first electric current, generates the first radiation signal corresponding with first signal, the matching unit is logical
Corresponding first signal parameter of first radiation signal is overregulated, so that first signal parameter and the electronic equipment
The port parameter of radio receiver matches, and then first signal is enable to be received by the electronic equipment；
When the electronic equipment needs to send second signal, the antenna is generated with first stage circuit units and institute
Corresponding second electric current of the second current frequency of second signal is stated, and then makes the antenna and metal plate 102 in second electricity
Resonance occurs under the action of stream, generates the second radiation signal corresponding with the second signal, and make second radiation signal
Emitted by the antenna.
In the specific implementation process, by taking the electronic equipment is mobile phone as an example, antenna assembly 103 be can be set on mobile phone top
Portion, as shown, also can be set in mobile phone bottom, it, can also be simultaneously in the case where the day space of lines that mobile phone is reserved allows
Antenna assembly 103 is both provided at the top and bottom of mobile phone, in the embodiment of the present application with no restriction.
In the embodiment of the present application two, when the electronic equipment, which further includes, frequency detector and controller, described
Primary circuit unit further includes the tunable capacitor for being connected in parallel on the first end and the second end；
Wherein, when the electronic equipment needs to receive first signal, by described in frequency detector detection
First current frequency of first signal, the controller adjust working as the tunable capacitor based on first current frequency
Preceding capacitor value is in the first capacitor value corresponding with first current frequency, so that described in first stage circuit units generation
First electric current；
When the electronic equipment needs to send the second signal, second letter is detected by the frequency detector
Number second current frequency, the controller adjusts the current capacitive reactance of the tunable capacitor based on second current frequency
Value is in the second capacitor value corresponding with second current frequency, so that first stage circuit units generate second electricity
Stream.
In the embodiment of the present application two, when the antenna is in low frequency operation state, the current capacitor value is specially
Less than or equal to the third capacitor value of a preset threshold, so that corresponding first impedance of first stage circuit units is in inductive,
And then the inductance is enable to be tuned the antenna.
In the embodiment of the present application two, when the antenna is in high-frequency work state, the current capacitor value is specially
Greater than the 4th capacitor value of the preset threshold, so that corresponding second impedance of first stage circuit units is in capacitive character, into
And the inductance is eliminated in the high inhibition effect of the high-frequency work state.
In the embodiment of the present application two, when the matching unit is specially a matching inductance, the matching unit is specific
For adjusting the corresponding first signal impedance value of first radiation signal according to the port Impedance value of the radio receiver,
So that the first signal impedance value matches with the port Impedance value.
In the embodiment of the present application two, the matching unit be specially by least one matching inductance and at least one
When passing through the matching network formed in parallel or series with capacitor, the matching unit is specifically used for according to the radio reception
The port power of machine adjusts corresponding first signal power of first radiation signal so that first signal power with it is described
Port power matches；Or
The matching unit is specifically used for adjusting first radiation according to the port Impedance value of the radio receiver
The corresponding first signal impedance value of signal, so that the first signal impedance value matches with the port Impedance value.
In the embodiment of the present application two, the first length of the antenna is less than the corresponding first wave of first radiation signal
First length of long 1/4 or the antenna is less than the 1/4 of the corresponding second wave length of second radiation signal.
By one or more technical solutions in the embodiment of the present application, following one or more technology effects may be implemented
Fruit:
One, due to the technical solution in the embodiment of the present application, using the first stage circuit units, first stage circuit units
It include an inductance, the inductance is with first end and second end, the technological means that the first end is connected with the antenna, this
Sample, inductance are attached in series with antenna, and the capacitive of nature is offset using the perception of inductance, form series resonance,
Since series inductance can effectively eliminate the capacitive of antenna itself, so, matching unit is only to the low-and high-frequency of current resonance at this time
Optimization function is played, the device of matching unit will not bring biggish deviation to the impedance matching of entire antenna, without
Accurate capacitor element is just able to achieve impedance optimization, so, it efficiently solves electronic equipment in the prior art and exists to antenna
Matching device the high technical problem of required precision, realize the technical effect for reducing the required precision to matching device.
Two, due to the technical solution in the embodiment of the present application, using the first stage circuit units, first stage circuit units
It include an inductance, the inductance is with first end and second end, the technological means that the first end is connected with the antenna, this
Sample, inductance are attached in series with antenna, and the capacitive of nature is offset using the perception of inductance, form series resonance,
Since series inductance can effectively eliminate the capacitive of antenna itself, so, matching unit is only to the low-and high-frequency of current resonance at this time
Optimization function is played, the device of matching unit will not bring biggish deviation to the impedance matching of entire antenna, and then will not shadow
The performance that electronic equipment receives signal is rung, so, it efficiently solves electronic equipment in the prior art there are the performances of antenna not
Stable technical problem realizes the technical effect for improving the stability of antenna performance.
It three, further include being connected in parallel on institute using first stage circuit units due to the technical solution in the embodiment of the present application
The technological means of the tunable capacitor of first end and the second end is stated, in this way, passing through electronics when antenna is when low frequency operation
Tunable capacitor is transferred to low capacitance by the control unit of equipment, at this point, tunable capacitor is similar to open a way, meets antenna low frequency operation
Impedance matching；When antenna is when high-frequency work, tunable capacitor is transferred to high capacity by control unit, at this point, adjustable electric
Appearance is similar to access, eliminates series inductance in the high inhibition effect of high frequency, and then nor affect on the high-frequency work of antenna, so,
The technical effect of high and low frequency work requirements can be met simultaneously by realizing an antenna assembly.
Four, due to the technical solution in the embodiment of the present application, first spoke is less than using the first length of the antenna
The first length for penetrating 1/4 or the antenna of the corresponding first wave length of signal is less than corresponding second wave of second radiation signal
Long 1/4 and first stage circuit units is made to generate the first electric current corresponding with the first current frequency of first signal,
And then make the antenna and the metal plate being arranged in the electronic equipment connecting with the antenna in first electric current
Effect is lower to occur resonance, the technological means of the first radiation signal corresponding with first signal is generated, in this way, due to antenna
Length is less than the 1/4 of signal wavelength, i.e. the length of antenna is short electrical length, and antenna assembly, which uses, utilizes match circuit and ground template die
Formula radiation is to generate the non-resonant manner of relatively good radiation, and therefore, antenna assembly is realizing the same of preferable radiation effect
When, antenna length is further shortened, the technical effect for saving electronic device space is realized.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (14)
1. a kind of antenna assembly is applied in an electronic equipment, comprising:
Antenna；
First stage circuit units, first stage circuit units include an inductance, and the inductance has first end and second end,
The first end is connected with the antenna, forms series resonance；
Matching unit has third end and the 4th end, and the third end is connected with the second end, the 4th end ground connection, institute
Matching unit is stated for optimizing the low-and high-frequency of the resonance；
Wherein, when the electronic equipment needs to receive the first signal, generate first stage circuit units and described first
Corresponding first electric current of first current frequency of signal, and then make the antenna and the setting connecting with the antenna in the electricity
Resonance occurs under the action of first electric current for the metal plate in sub- equipment, generates the first spoke corresponding with first signal
Signal is penetrated, the matching unit is by adjusting corresponding first signal parameter of first radiation signal, so that first letter
Number parameter and the port parameter of the radio receiver of the electronic equipment match, and then keep first signal described
Electronic equipment receives；
When the electronic equipment needs to send second signal, generate first stage circuit units and the second signal
Corresponding second electric current of second current frequency, and then send out the antenna and the metal plate under the action of second electric current
Raw resonance, generates the second radiation signal corresponding with the second signal, and second radiation signal is made to pass through the antenna
Transmitting.
2. antenna assembly as described in claim 1, which is characterized in that first stage circuit units further include be connected in parallel on it is described
The tunable capacitor of first end and the second end；
Wherein, it when the electronic equipment needs to receive first signal, is detected by the detection unit of the electronic equipment
The control unit of first current frequency of first signal, the electronic equipment is adjusted based on first current frequency
The current capacitor value of the tunable capacitor is in the first capacitor value corresponding with first current frequency, so that the first order
Circuit unit generates first electric current；
When the electronic equipment needs to send the second signal, the institute of the second signal is detected by the detection unit
The second current frequency is stated, described control unit is adjusted at the current capacitor value of the tunable capacitor based on second current frequency
In the second capacitor value corresponding with second current frequency, so that first stage circuit units generate second electric current.
3. antenna assembly as claimed in claim 2, which is characterized in that described when the antenna is in low frequency operation state
Current capacitor value is specifically less than the third capacitor value equal to a preset threshold, so that first stage circuit units corresponding the
One impedance is in inductive, and then the inductance is enable to be tuned the antenna.
4. antenna assembly as claimed in claim 3, which is characterized in that described when the antenna is in high-frequency work state
Current capacitor value is specially the 4th capacitor value for being greater than the preset threshold, so that first stage circuit units corresponding second
Impedance is in capacitive character, and then eliminates the inductance in the high inhibition effect of the high-frequency work state.
5. antenna assembly as described in claim 3 or 4, which is characterized in that in the matching unit be specially a matching inductance
When, the matching unit is specifically used for adjusting first radiation signal pair according to the port Impedance value of the radio receiver
The the first signal impedance value answered, so that the first signal impedance value matches with the port Impedance value.
6. antenna assembly as described in claim 3 or 4, which is characterized in that in the matching unit specially by least one
When matching inductance and at least one matching capacitance pass through the matching network formed in parallel or series, the matching unit is specifically used
In adjusting corresponding first signal power of first radiation signal according to the port power of the radio receiver, so that institute
The first signal power is stated to match with the port power；Or
The matching unit is specifically used for adjusting first radiation signal according to the port Impedance value of the radio receiver
Corresponding first signal impedance value, so that the first signal impedance value matches with the port Impedance value.
7. antenna assembly as claimed in claim 6, which is characterized in that the first length of the antenna is less than first radiation
First length of 1/4 or the antenna of the corresponding first wave length of signal is less than the corresponding second wave length of second radiation signal
1/4.
8. a kind of electronic equipment, comprising:
Shell；
Metal plate is arranged in the shell；
Antenna assembly is arranged in the shell, is connected with the metal plate, the antenna assembly includes antenna；First order electricity
Road unit, first stage circuit units include an inductance, and the inductance has first end and a second end, the first end with
The antenna is connected, and forms series resonance；Matching unit has third end and the 4th end, the third end and the second end
It is connected, the 4th end ground connection, the matching unit is used to optimize the low-and high-frequency of the resonance；
Wherein, when the electronic equipment needs to receive the first signal, the antenna and first stage circuit units generate with
Corresponding first electric current of first current frequency of first signal, and then make the antenna and the metal plate described first
Resonance occurs under the action of electric current, generates the first radiation signal corresponding with first signal, the matching unit passes through tune
Corresponding first signal parameter of first radiation signal is saved, so that first signal parameter and the electronic equipment is wireless
The port parameter of electric receiver matches, and then first signal is enable to be received by the electronic equipment；
When the electronic equipment needs to send second signal, the antenna and first stage circuit units are generated and described the
Corresponding second electric current of second current frequency of binary signal, and then make the antenna and the metal plate in second electric current
Effect is lower to occur resonance, generates the second radiation signal corresponding with the second signal, and pass through second radiation signal
The antenna transmitting.
9. electronic equipment as claimed in claim 8, which is characterized in that the electronic equipment further include have frequency detector and
When controller, first stage circuit units further include the tunable capacitor for being connected in parallel on the first end and the second end；
Wherein, when the electronic equipment needs to receive first signal, pass through frequency detector detection described first
First current frequency of signal, the controller adjust the current appearance of the tunable capacitor based on first current frequency
Anti- value is in the first capacitor value corresponding with first current frequency, so that first stage circuit units generate described first
Electric current；
When the electronic equipment needs to send the second signal, the second signal is detected by the frequency detector
Second current frequency, the controller are adjusted at the current capacitor value of the tunable capacitor based on second current frequency
In the second capacitor value corresponding with second current frequency, so that first stage circuit units generate second electric current.
10. electronic equipment as claimed in claim 9, which is characterized in that described when the antenna is in low frequency operation state
Current capacitor value is specifically less than the third capacitor value equal to a preset threshold, so that first circuit unit corresponding first
Impedance is in inductive, and then the inductance is enable to be tuned the antenna.
11. electronic equipment as claimed in claim 10, which is characterized in that when the antenna is in high-frequency work state, institute
Stating current capacitor value is specially to be greater than the 4th capacitor value of the preset threshold, so that first stage circuit units corresponding the
Two impedances are in capacitive character, and then eliminate the inductance in the high inhibition effect of the high-frequency work state.
12. electronic equipment as described in claim 10 or 11, which is characterized in that the matching unit be specially a matching electricity
When sense, the matching unit is specifically used for adjusting first radiation signal according to the port Impedance value of the radio receiver
Corresponding first signal impedance value, so that the first signal impedance value matches with the port Impedance value.
13. electronic equipment as described in claim 10 or 11, which is characterized in that in the matching unit specially by least one
When a matching inductance and at least one matching capacitance pass through the matching network formed in parallel or series, the matching unit is specific
For adjusting corresponding first signal power of first radiation signal according to the port power of the radio receiver, so that
First signal power matches with the port power；Or
The matching unit is specifically used for adjusting first radiation signal according to the port Impedance value of the radio receiver
Corresponding first signal impedance value, so that the first signal impedance value matches with the port Impedance value.
14. electronic equipment as claimed in claim 13, which is characterized in that the first length of the antenna is less than first spoke
The first length for penetrating 1/4 or the antenna of the corresponding first wave length of signal is less than corresponding second wave of second radiation signal
Long 1/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325362.2A CN104993235B (en) | 2015-06-12 | 2015-06-12 | A kind of antenna assembly and electronic equipment |
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| CN201510325362.2A CN104993235B (en) | 2015-06-12 | 2015-06-12 | A kind of antenna assembly and electronic equipment |
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| CN104993235B true CN104993235B (en) | 2019-01-15 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140644A (en) * | 2015-08-24 | 2015-12-09 | 联想(北京)有限公司 | Antenna and electronic equipment |
| CN107369912A (en) * | 2016-05-11 | 2017-11-21 | 中兴通讯股份有限公司 | Antenna and antenna tuning method |
| CN108288767B (en) * | 2017-12-29 | 2021-06-01 | 瑞声精密制造科技(常州)有限公司 | Antenna system and mobile terminal |
| CN109510606B (en) * | 2018-12-29 | 2024-09-17 | 北京小米移动软件有限公司 | Cascade circuit |
| CN113540753A (en) * | 2020-04-21 | 2021-10-22 | 鸿富锦精密电子(郑州)有限公司 | Antenna structure and wireless communication device with same |
| CN114584156B (en) * | 2020-12-02 | 2024-05-10 | 杭州海康威视数字技术股份有限公司 | Monitoring device and communication control method thereof |
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| CN1778049A (en) * | 2003-04-18 | 2006-05-24 | 株式会社友华 | Variable tuning antenna and mobile wireless device using same |
| CN101447604A (en) * | 2008-12-30 | 2009-06-03 | 清华大学 | Built-in antenna for digital video broadcast-handheld mobile terminal based on variable-capacitance matching circuit |
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