CN108832907A - Data radio station wideband impedance match network and its design method - Google Patents
Data radio station wideband impedance match network and its design method Download PDFInfo
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- CN108832907A CN108832907A CN201810516302.2A CN201810516302A CN108832907A CN 108832907 A CN108832907 A CN 108832907A CN 201810516302 A CN201810516302 A CN 201810516302A CN 108832907 A CN108832907 A CN 108832907A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
Abstract
The present invention relates to a kind of data radio station wideband impedance match network and its design methods, wherein the matching network includes the first resonant tank, first resonant tank includes the first inductance and first capacitor, and first inductance and the first capacitor are connected between device to be matched and terminal afterwards in parallel or in series；Wherein method includes the first locus of impedance for obtaining the first reflection coefficient of device to be matched on Smith chart, the data radio station wideband impedance match network that the first locus of impedance can be made to crimp or distort according to the positional relationship design of the first locus of impedance and default return loss circle, wherein, the matching network includes the first resonant tank being made of the first inductance and first capacitor, when carrying out the impedance matching of device to be matched, the first inductance and first capacitor it is in series or in parallel after be connected between device to be matched and terminal.By above-mentioned matching network and its design method, the impedance matching bandwidth of device to be matched is expanded, impedance matching effect is improved.
Description
Technical field
The present invention relates to fields of communication technology, more particularly to a kind of data radio station wideband impedance match network and its design
Method.
Background technique
In the circuit with resistance, inductance and capacitor, the inhibition risen to the electric current in circuit is called impedance
(impedance), to make circuit be in the working condition of maximum power output, it is necessary to design data radio station wideband impedance match
Network, logarithm conduct electricity road carry out impedance matching, i.e., load impedance is mutually adapted with driving source internal driving.
Currently used data radio station wideband impedance match network design method is first to the device of pending impedance matching
Frequency response carry out operation, and determine the device structure and its initial parameter, then using numerical optimization technique to device
Each parameter optimize, it is final to determine that data radio station wideband impedance match network is simultaneously realized to the device in certain broadband range
Interior impedance matching.
However, being only to realize device in certain broadband by currently used data radio station wideband impedance match network
Impedance matching in range, there is no the frequency band width for solving the problems, such as device impedance matching.
Summary of the invention
Based on this, it is necessary to not solve the frequency of device impedance matching for above-mentioned data radio station wideband impedance match network
The technical issues of rate narrow bandwidth, provides a kind of data radio station wideband impedance match network and its design method.
A kind of data radio station wideband impedance match network, the data radio station wideband impedance match network include the first resonance
Circuit, first resonant tank include the first inductance and first capacitor, first inductance and the first capacitor it is in parallel or
It is connected between device to be matched and terminal after person's series connection.
A kind of data radio station wideband impedance match network design method, the method includes：
Obtain first locus of impedance of the first reflection coefficient of device to be matched on Smith chart；
It can make first impedance according to the positional relationship design of first locus of impedance and default return loss circle
The data radio station wideband impedance match network of track curling or distortion；
Wherein, the data radio station wideband impedance match network include be made of the first inductance and first capacitor it is first humorous
Shake circuit, when carrying out the impedance matching of the device to be matched, first inductance and first capacitor series connection or simultaneously
It is connected to after connection between the device to be matched and terminal.
Above-mentioned data radio station wideband impedance match network and its design method, by drawing between device to be matched and terminal
Enter the resonant tank data radio station wideband impedance match network comprising being made of inductance and capacitor, makes the reflection system of device to be matched
The corresponding track of number is crimped or distorts, to not only realize the impedance matching of device to be matched, and expands to be matched
The impedance matching bandwidth of device.
Detailed description of the invention
Fig. 1-1 is the data radio station wideband impedance match schematic network structure of one embodiment；
Fig. 1-2 is the data radio station wideband impedance match schematic network structure of another embodiment；
Fig. 2 is the equipment under test impedance matching structure schematic diagram of one embodiment；
Fig. 3 is the data radio station wideband impedance match network design method flow chart of one embodiment；
Fig. 4 is the schematic diagram of the completely unmatched Smith chart of impedance line；
Fig. 5 is the schematic diagram of the matched Smith chart in impedance line part；
Fig. 6 is the schematic diagram of the Smith chart of impedance line exact matching；
Fig. 7 is the device input data radio station wideband impedance match schematic network structure to be matched of one embodiment；
Fig. 8 is Smith chart and the cartesian coordinate signal of reflection coefficient of the device to be matched in Single Capacitance in parallel
Figure；
Fig. 9 is Smith chart and the cartesian coordinate signal of reflection coefficient of the device to be matched in series resonant tank
Figure；
Figure 10 is that the Smith chart of reflection coefficient of the device to be matched at shunt-resonant circuit and cartesian coordinate are shown
It is intended to；
The impedance variations schematic diagram of device to be matched when Figure 11 is series resonant tank；
The impedance of device to be matched and admittance change schematic diagram when Figure 12 is shunt-resonant circuit.
Specific embodiment
Technical solution of the present invention is described in detail below with reference to specific embodiment and attached drawing, so that it is more
It is clear.
With reference to the structural schematic diagram of the data radio station wideband impedance match network as shown in Fig. 1-1 and Fig. 1-2, the present invention is real
It applies example and a kind of data radio station wideband impedance match network S10 is provided, data radio station wideband impedance match network S10 includes first
Resonant tank, first resonant tank include the first inductance S101 and first capacitor S102, the first inductance S101 and first capacitor
S102 is connected to afterwards in parallel or in series between device S20 and terminal S30 to be matched, i.e., as Figure 1-1, the first inductance S101
And it is connected between device S20 and terminal S30 to be matched after first capacitor S102 series connection, or as shown in Figs. 1-2, the first inductance
S101 and first capacitor S102 is one end ground connection, and it is in parallel that the other end is connected to formation between device S20 to be matched and terminal S30
Circuit.Wherein, device to be matched is the device for needing to carry out impedance matching, and the device which carries out impedance matching can be
Input terminal and output end do not carry out the device of impedance matching, are also possible to one end in input terminal and output end and carry out
The device of impedance matching.Therefore, data radio station wideband impedance match network can be input data radio station wideband impedance match network
Or output data radio station wideband impedance match network, wherein input data radio station wideband impedance match network respectively with device to be matched
The input port of part terminal corresponding with input terminal is connected, output data radio station wideband impedance match network respectively with it is to be matched
The output port of device terminal corresponding with output end is connected, and for the convenience of operation, usually first carries out to input network
Matching carries out the matching of output impedance network again after the completion of to be matched.
To keep the structure for treating matching device progress impedance matching apparent, one embodiment as shown in Figure 2 is provided
Equipment under test impedance matching structure schematic diagram, it is as to be matched including DUT (Device Under Test, equipment under test)
Device further includes input matching network, output matching network and the corresponding terminal of device input to be matched and output end pair
The terminal answered, wherein Zin is input impedance, and Zout is output impedance.In practical applications, data radio station broadband impedance
Distribution network can be applied in radio circuit, the key as radio circuit design.In the design of radio circuit, work as radio circuit
Impedance exact matching when, signal source impedance is equal with input impedance and its load impedance is equal with output impedance, such as Fig. 2
The impedance standard value of shown terminal is 50 ohm.This data radio station wideband impedance match network can also further apply no line number
It conducts electricity in platform, reaches superior technique application effect.
In one embodiment, data radio station wideband impedance match network can also include the second resonant tank, this second
Resonant tank includes the second inductance and the second capacitor, is connected to device to be matched and end after the first inductance and first capacitor are in parallel
When between end, it is connected between the first resonant tank and device to be matched after the second inductance and the series connection of the second capacitor, or connection
Between the first resonant tank and terminal；It is connected between device to be matched and terminal after the first inductance and first capacitor series connection
When, it is connected between the first resonant tank and device to be matched after the second inductance and the parallel connection of the second capacitor, or be connected to first
Between resonant tank and terminal, i.e. the second inductance and the second capacitor are one end ground connection, the other end be connected to device to be matched with
Shunt circuit is formed between terminal.By the way that first and second resonant tank is arranged in data radio station wideband impedance match network,
And when the first resonant tank is series resonant tank, the second resonant tank is shunt-resonant circuit；When the first resonant tank is
When shunt-resonant circuit, the second resonant tank is series resonant tank, thus utilizing the data radio station wideband impedance match net
When network treats matching device progress impedance matching, the reflection coefficient of device to be matched can be made to correspond to track and further crimp or turn round
Song, to further expand the impedance matching bandwidth of device to be matched.
In addition, data radio station wideband impedance match network may also include third inductance or third capacitor, the third inductance or
Third capacitor is connected between device to be matched and terminal or one end ground connection, the other end be connected to device to be matched and terminal it
Between, that is, it is connected in parallel between device to be matched and terminal.To which data radio station wideband impedance match network includes by inductance and capacitor
The resonant tank of composition, and the inductance or capacitor of serial or parallel connection one or more are gone back, impedance is carried out treating matching device
When matching, rapidly realizes impedance matching and extend the impedance matching bandwidth of device to be matched.
The data radio station wideband impedance match network of any one above-mentioned embodiment, it is humorous comprising being made of inductance and capacitor
Shake circuit, treat matching device carry out impedance matching when, be connected between device to be matched and terminal, not only realize to
Impedance matching with device, and make the reflection coefficient of device to be matched correspond to track and be crimped or distort, expand to
Impedance matching bandwidth with device.
Exist for traditional data radio station wideband impedance match network design method without solving device impedance matching
The problem of frequency band width, there is a need to provide a kind of data radio station wideband impedance match network design method, as shown in figure 3,
This method includes：
Step S301：Obtain first locus of impedance of the first reflection coefficient of device to be matched on Smith chart；
Step S302：It can be made according to the positional relationship design of first locus of impedance and default return loss circle described
The data radio station wideband impedance match network of the curling of first locus of impedance or distortion；Wherein, the data radio station broadband impedance
Distribution network includes the first resonant tank being made of the first inductance and first capacitor, in the impedance for carrying out the device to be matched
Timing, first inductance and the first capacitor it is in series or in parallel after be connected between the device to be matched and terminal.
Wherein, after step S301, the first impedance rail can be inductively or capacitively made by serial or parallel connection one or more
Mark is moved to circle center region, so connected with the positional relationship design of default return loss circle according to present impedance track or
Person shunt-resonant circuit, and so that locus of impedance is crimped or is distorted between device to be matched and terminal circuit access, from
And Broadband Matching is realized to greatest extent, reach better matching effect.
In the real process of impedance matching for treating matching device, desired impedance matching is unapproachable, therefore is set
Meter person is usually to control the reflection coefficient of device to be matched within the scope of certain numerical value, as realizes the impedance of device to be matched
Matching.Wherein, can by obtaining the first reflection coefficient of device to be matched corresponding first locus of impedance on Smith chart,
The current reflection coefficient of device i.e. to be matched corresponding original impedance track on Smith chart, reflects the resistance of device to be matched
Anti- situation, and return loss circle is preset, which is to realize impedance matching in device to be matched
When, the numberical range where reflection coefficient, and then obtain the positional relationship of original impedance track and default return loss circle
Determine the impedance match situation of device to be matched.When carrying out impedance matching for radio circuit, passed through according to the application of Practical Project
It tests, the corresponding reflectance value of return loss circle is set smaller than -10db.
To keep the impedance match situation that device to be matched is presented by Smith chart apparent, with reference to such as fig. 4 to fig. 6
Shown in Smith chart, wherein preset number where reflection coefficient when device reflection coefficient to be matched realizes impedance matching
Be worth range, i.e., as shown in dashed circle at fig. 4 to fig. 6 center, the interior corresponding reflectance value of return loss circle may be less than-
10db.The reflection coefficient of the device to be matched corresponding original impedance track on Smith chart is obtained as shown in Figure 4, this is original
Locus of impedance is except preset return loss circle, then device present impedance to be matched mismatches, device to be matched as shown in Figure 5
Part reflection coefficient corresponds to original impedance path portion inside preset return loss circle, partially except return loss circle, i.e.,
Device present impedance to be matched part matching, as shown in fig. 6, the corresponding original impedance track of device reflection coefficient to be matched exists
Preset return loss circle is internal, i.e., the impedance matching of device to be matched.According to the reflection coefficient of device to be matched in Smith
Corresponding original impedance track on circle diagram, it may be determined that device present impedance match condition to be matched, and then treat matching device into
Row impedance matching.
Wherein, after by the network connection of data radio station wideband impedance match between device to be matched and terminal, step
S302 may also include second locus of impedance of the second reflection coefficient for obtaining current device to be matched on Smith chart, if should
Second locus of impedance does not fully enter in default return loss circle, then increases in data radio station wideband impedance match network by the
The second resonant tank that two inductance and the second capacitor are constituted, wherein second resonant tank be connected to the first resonant tank with to
It matches between device, or is connected between the first resonant tank and terminal.By by data radio station wideband impedance match net
Network accesses the impedance match situation of device to be matched and then secondary determination device to be matched, is reflected according to device to be matched at this time
Coefficient counterpart impedance track and the positional relationship of default return loss circle are modified data radio station wideband impedance match network,
I.e. when device present impedance match condition to be matched is unsatisfactory for requiring, increase by data radio station wideband impedance match network
Two resonant tanks treat matching device and carry out impedance matching, to realize the impedance matching of device to be matched, and make device to be matched
The corresponding track of part reflection coefficient further crimps or distorts, and has further expanded the impedance matching bandwidth of device to be matched.
Further, in the data radio station wideband impedance match network of design, when the first inductance and first capacitor pass through
When being connected between device to be matched and terminal after series connection, the second inductance and the second capacitor are one end ground connection, and the other end connects
It connects between the first resonant tank and device to be matched, or is connected between the first resonant tank and terminal and forms parallel resonance
Circuit；Similarly, when the first inductance and the uniform end ground connection of first capacitor, the other end is connected to shape between device to be matched and terminal
When at shunt-resonant circuit, the second inductance and the second capacitor by be connected in series in the first resonant tank and device to be matched it
Between, or be connected between the first resonant tank and terminal.By designing when designing data radio station wideband impedance match network
The network includes first and second resonant tank, and when the first resonant tank is series resonant tank, the second resonant tank
For shunt-resonant circuit；When the first resonant tank is shunt-resonant circuit, the second resonant tank is series resonant tank, thus
When the data radio station wideband impedance match network handles matching device using the design carries out impedance matching, fully consider
Connection relationship between the internal components and device of distribution network, so that the data radio station wideband impedance match network for improving design is real
The efficiency of the impedance matching of existing device to be matched, and so that the reflection coefficient of device to be matched is corresponded to track and further crimp or turn round
Song has further expanded the impedance matching bandwidth of device to be matched.
Wherein, when being connected between device to be matched and terminal after the first inductance and first capacitor series connection, the first impedance
Track curling or distortion refer to that resistance smoother hour hands of the front end of the first locus of impedance on Smith chart move, first
Resistance circle of the low frequency end of locus of impedance on Smith chart moves counterclockwise；Similarly, when the first inductance and first capacitor
When be connected between device to be matched and terminal after parallel connection, the curling of the first locus of impedance or distortion refer to the first locus of impedance
The smoother hour hands of conductance of the front end on Smith chart move, electricity of the low frequency end of the first locus of impedance on Smith chart
Rounding moves counterclockwise.Wherein, the front end of the first locus of impedance and low frequency end according to the resonance frequency of the first resonant tank into
Row determines that phase negative side is respectively pressed with low frequency end track with the center frequency point of the first resonant tank in the front end track of the first track
To movement.By designing the data radio station wideband impedance match network of the resonant tank comprising being made of inductance and capacitor, and will
It is treated between the data radio station wideband impedance match network insertion device to be matched and terminal and matches device progress impedance matching, from
And move the front end track of the corresponding locus of impedance of device to be matched in the opposite direction with low frequency end track, make locus of impedance
It is crimped or distorts, to quickly and accurately realize the impedance matching for treating matching device, improve impedance matching efficiency simultaneously
Expand impedance matching bandwidth.
In addition, the data radio station wideband impedance match network of design may also include third inductance or third capacitor, third electricity
Sense or third capacitor are arranged in parallel or in series between device to be matched and terminal.To which data radio station wideband impedance match network includes
The resonant tank being made of inductance and capacitor, and the inductance or capacitor of serial or parallel connection one or more are gone back, to be matched
When device carries out impedance matching, impedance matching is fast implemented and has extended the impedance matching bandwidth of device to be matched.
To keep the effect of technical solution of the present invention apparent, the reflection system of device to be matched in combined impedance matching process
Number S11 situation of change of corresponding locus of impedance on Smith chart is illustrated, with reference to as shown in Figure 7 to 10, wherein
Fig. 7 is the structural schematic diagram that device input to be matched carries out impedance matching, at the input port S701 of device to be matched and end
The data radio station wideband impedance match network of design is provided between the S702 of end, thus realize the impedance matching for treating matching device,
The data radio station wideband impedance match network includes capacitor S703, inductance S704, capacitor S705, inductance S706 and capacitor S707,
Wherein the one end capacitor S703 is grounded, and the other end is connected between input port and terminal, inductance S704 and inductance S705 series connection structure
At resonant tank, one end of the resonant tank is connect with input port S701, and the other end is connect with terminal S702, inductance S706 and
Capacitor S707 parallel connection constitutes resonant tank, and wherein inductance S706 and capacitor S707 is one end ground connection, and the other end is connected to input
Between port S701 and terminal S702.Specifically, data radio station broadband impedance is designed for the impedance conditions of device to be matched
The process that distribution network carries out impedance matching can refer to Fig. 8 to 10.Wherein according to the impedance acquisition device of current device to be matched
Reflection coefficient S11, and obtain original impedance track of the reflection coefficient S11 on Smith chart and in cartesian coordinate such as
Shown in Fig. 8, reflection coefficient S11 corresponds to track 1 outside default return loss circle in Smith chart, and wherein 1Zfh is reflection
The front end of the corresponding track of coefficient S 11,1Zfl are the low frequency end that reflection coefficient S11 corresponds to track.As shown in Figure 8 it is found that reflection
Coefficient S 11, i.e. clawback loss S11 are very high, and the amplitude of S11 therefore can be according to history no better than 0db on entire available bandwidth
This close circle diagram track principle, first to a device to be matched upper capacitor S703 in parallel, one end ground connection of capacitor S703, other end company
It connects between device to be matched and terminal, by being connected in parallel with a capacitor to device to be matched, so that S11 is corresponded to track smoother along conductance
Clock is mobile, obtains the locus of impedance 2 as shown in Smith chart in Fig. 8 comprising front end 2Zfh and low frequency end 2Zfl,
It can be obtained by Fig. 8 cartesian coordinate map, by original locus of impedance 1 to the portion reflection coefficient S11 of the device to be matched of locus of impedance 2
Divide and meet impedance matching, especially in 410Mhz frequency range, the amplitude of S11 reaches about -25db.And the design for narrowband, in bandwidth
It is easy to accomplish less than -10db, but locus of impedance 2 is not met by broadband performance requirement, i.e., locus of impedance 2 is in broadband portion
Divide and be not able to satisfy impedance matching requirements yet, good impedance matching can't be reached.
Therefore, to realize good impedance matching and further increasing impedance matching bandwidth, according to the anti-of device to be matched
The positional relationship for penetrating the corresponding locus of impedance of coefficient S 11 and default return loss circle, in data radio station wideband impedance match network
It is middle to increase the series resonant tank that is made of inductance S704 and capacitor S705, be connected to after inductance S704 and capacitor S705 series connection to
Between the input port and terminal for matching device, and then obtain the Smith chart and Di Ka of reflection coefficient S11 as shown in Figure 9
That coordinate.Wherein, after accessing series resonant tank, reflection coefficient S11 corresponding locus of impedance on Smith chart
Front end track and low frequency end track be crimped according to the center frequency point of the resonant tank, the wherein front end of locus of impedance
It is determined with low frequency end by the resonance frequency of resonant tank.Center frequency point F as shown on Fig. 9 Smith chart, reflection system
Number S11 be crimped by locus of impedance 2 according to center frequency point F in the corresponding locus of impedance of Smith chart, change for comprising
The locus of impedance 3 of front end frequency point 3Zfh and low frequency end frequency point 3Zfl, wherein using center frequency point F as low-and high-frequency separation, resistance
The front end of anti-track 2 is moved along the smoother hour hands of resistance, and low frequency end moves counterclockwise along resistance circle, while close to default echo
Frequency location remains unchanged between near loss circle.The reflection coefficient S11 counterpart impedance track of above-mentioned device to be matched is to connect
The center frequency point of the resonant tank entered is that low-and high-frequency separation is changed, and compares single access inductance or capacitor, reflection coefficient
S11 counterpart impedance track is no longer along single-pathway variation, but using center frequency point as low-and high-frequency separation, the height of locus of impedance
Frequency end track is respectively moved with low frequency end track with the center frequency point in the opposite direction, to change S11 pairs of reflection coefficient
The locus of impedance answered, the locus of impedance are movable on the resistance circle entirely different with initial impedance, extend impedance matching
Frequency bandwidth further decreases the matched difficulty of device resistance to be matched, has reached unexpected effect.Significantly.Pass through
Cartesian coordinate in Fig. 9 can determine most of reflection coefficient S11 in default reflection coefficients bounds, i.e. -10db is hereinafter, meet
Impedance matching requirements.
By the positional relationship according to locus of impedance 2 and default return loss circle, the series resonance of inductance and capacitor is constructed
It circuit and connects to access and carries out impedance matching between device to be matched and terminal, obtain locus of impedance 3, pass through inductance and capacitor
Series resonant tank, realize the impedance matching bandwidth for increasing device to be matched.However, further to make locus of impedance 3
Bandwidth is met the requirements, that is, realizes the further impedance matching of device to be matched, makes the reflection coefficient S11 of device in preset range
It is interior, it can also increase the parallel resonance being made of inductance S706 and capacitor S707 in data radio station wideband impedance match network and return
Road, inductance S706 and capacitor S707 are one end ground connection, and the other end is connected between device to be matched and terminal, by parallel resonance
Circuit is simultaneously connected between device input mouth to be matched and terminal and carries out impedance matching, obtains reflection coefficient as shown in Figure 10
Locus of impedance of the S11 on Smith chart and in cartesian coordinate.Wherein bandwidth obviously further expands, reflection coefficient S11
By locus of impedance 3 using the center frequency point F of the shunt-resonant circuit of access as low-and high-frequency separation, the front end on Smith chart
It is moved along the smoother hour hands of conductance, and low frequency end moves counterclockwise along conductance circle, changes as comprising front end frequency point 4Zfh and low frequency
The locus of impedance 4 of frequency point 4Zfl is held, and locus of impedance 4 realizes in preset reflection coefficient S11 circle and treats adaptation
The impedance matching of part.Similarly, the schematic diagram by reflection coefficient S11 in Figure 10 in cartesian coordinate is it is found that device to be matched
Reflection coefficient S11 value in preset target value -10db hereinafter, realizing the impedance matching to current device to be matched.
Wherein, it on the resistance circle of Smith chart, according to device reflection coefficient counterpart impedance track to be matched and presets
The positional relationship of return loss circle, determines and constructs the series resonant tank of inductance and capacitor, and by the resonant tank series connection
After entering device to be matched, the center frequency point of series resonant tank can be calculated according to following equation：
Wherein, Δ Z is impedance variation amount, Δ ZSFor series resonant tank impedance variation amount, LSFor series inductance, CSFor string
Join capacitor, ωSFor the angular frequency of series resonant tank.
With reference to the variation schematic diagram of device to be matched as shown in figure 11 in series resonant tank, to device to be matched
After series resonant tank, using center frequency point fs as low-and high-frequency separation, impedance is in front end and low frequency end with frequency
Change is changed with different trend.And on Smith chart, center frequency point fs counterpart impedance value remains stationary, device reflection
Coefficient counterpart impedance track is using center frequency point fs as low-and high-frequency separation, and front end is mobile around the smoother hour hands of resistance, low frequency end
Mobile counterclockwise around resistance circle, reflection coefficient counterpart impedance track is crimped in Smith chart inner ring, thus not only real
The impedance matching of matching device is now treated, and expands impedance matching bandwidth, improves the efficiency of impedance matching.
Similarly, on the conductance circle of Smith chart, according to device reflection coefficient counterpart impedance track to be matched and in advance
If the positional relationship of return loss circle, the shunt-resonant circuit of inductance and capacitor is determined and constructs, and the resonant tank is in parallel
It accesses after device to be matched, the center frequency point of shunt-resonant circuit can be calculated according to following equation：
Wherein Δ ZPFor shunt-resonant circuit impedance variation amount, LPFor shunt inductance, CPFor shunt capacitance, ωPIt is in parallel humorous
Vibration circuit angular frequency, Δ Y are admittance change amount, Δ YPFor shunt-resonant circuit admittance change amount.
With reference to the variation schematic diagram of device to be matched as shown in figure 12 at shunt-resonant circuit, to device to be matched
After shunt-resonant circuit, using center frequency point fp as low-and high-frequency separation, impedance and admittance in front end and low frequency end with difference
Trend changes as frequency changes.And on Smith chart, center frequency point fp counterpart impedance value remains stationary, device reflection
Coefficient counterpart impedance track is using center frequency point fp as low-and high-frequency separation, and front end is mobile around the smoother hour hands of conductance, low frequency end
Mobile counterclockwise around conductance circle, reflection coefficient counterpart impedance track is crimped in Smith chart inner ring, thus not only real
The impedance matching of matching device is now treated, and expands impedance matching bandwidth, improves the efficiency of impedance matching.
The data radio station wideband impedance match network design method of any one above-mentioned embodiment, by obtaining device to be matched
Original impedance track of the reflection coefficient of part on Smith chart, and according to the position of the locus of impedance and default return loss circle
Set relational design data radio station wideband impedance match network, wherein the data radio station wideband impedance match network include by inductance and
The resonant tank that capacitor is constituted in parallel or series accesses device to be matched and terminal when treating matching device and carrying out impedance matching
Between, so that device resistance track to be matched is crimped or is distorted, to not only realize the impedance matching of device to be matched, also
The further expansion impedance matching bandwidth of device to be matched.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
It should be noted that term involved in the embodiment of the present invention " first second third " be only be that difference is similar
Object, do not represent the particular sorted for object, it is possible to understand that ground, " Yi Er third " can be in the case where permission
Exchange specific sequence or precedence.It should be understood that the object that " first second third " is distinguished in the appropriate case can be mutual
It changes, so that the embodiment of the present invention described herein can be real with the sequence other than those of illustrating or describing herein
It applies.
Several embodiments of the present invention above described embodiment only expresses, therefore description is more specific, but can not be
And it is interpreted as limitations on the scope of the patent of the present invention.It should be pointed out that for those of ordinary skill in the art, not departing from
Under the premise of present inventive concept, several modifications and improvements can be also made, these are all within the scope of protection of the present invention.Therefore, originally
The scope of protection shall be subject to the appended claims for patent of invention.
Claims (8)
1. a kind of data radio station wideband impedance match network, which is characterized in that the data radio station wideband impedance match network packet
The first resonant tank is included, first resonant tank includes the first inductance and first capacitor, first inductance and described first
Capacitor is connected between device to be matched and terminal afterwards in parallel or in series.
2. data radio station wideband impedance match network according to claim 1, which is characterized in that the data radio station broadband
Impedance matching network further includes the second resonant tank, and second resonant tank includes the second inductance and the second capacitor；
When being connected between the device to be matched and the terminal after first inductance and first capacitor series connection, institute
It is connected between first resonant tank and the device to be matched after stating the second inductance and second capacitor parallel connection, or
It is connected between first resonant tank and the terminal；
When being connected between the device to be matched and the terminal after first inductance and the first capacitor are in parallel, institute
It is connected between first resonant tank and the device to be matched after stating the second inductance and second capacitor series connection, or
It is connected between first resonant tank and the terminal.
3. according to claim 1 to data radio station wideband impedance match network described in 2 any one, which is characterized in that the number
The platform wideband impedance match network that conducts electricity further includes third inductance or third capacitor, and the third inductance or the third capacitor are in parallel
Or it is connected between the device to be matched and the terminal.
4. a kind of data radio station wideband impedance match network design method, which is characterized in that the method includes：
Obtain first locus of impedance of the first reflection coefficient of device to be matched on Smith chart；
It can make first locus of impedance according to the positional relationship design of first locus of impedance and default return loss circle
The data radio station wideband impedance match network of curling or distortion；
Wherein, the data radio station wideband impedance match network includes that the first resonance being made of the first inductance and first capacitor returns
Road, when carrying out the impedance matching of the device to be matched, first inductance and the first capacitor it is in series or in parallel after
It is connected between the device to be matched and terminal.
5. data radio station wideband impedance match network design method according to claim 4, which is characterized in that the method
Further include：
After by data radio station wideband impedance match network connection between the device to be matched and the terminal, obtain
Take second locus of impedance of the second reflection coefficient of presently described device to be matched on Smith chart；
If second locus of impedance does not fully enter in the default return loss circle, in the data radio station broadband impedance
Increase the second resonant tank being made of the second inductance and the second capacitor in matching network, wherein second resonant tank connects
It connects between first resonant tank and the device to be matched, or is connected to first resonant tank and the terminal
Between.
6. data radio station wideband impedance match network design method according to claim 5, which is characterized in that when described
After one inductance and the first capacitor series connection when being connected between the device to be matched and the terminal, second inductance and
It is connected between first resonant tank and the device to be matched after second capacitor is in parallel, or is connected to described the
Between one resonant tank and the terminal；
When being connected between the device to be matched and the terminal after first inductance and the first capacitor are in parallel, institute
It is connected between first resonant tank and the device to be matched after stating the second inductance and second capacitor series connection, or
It is connected between first resonant tank and the terminal.
7. data radio station wideband impedance match network design method according to claim 5, which is characterized in that when described
When being connected between the device to be matched and the terminal after one inductance and first capacitor series connection, the first impedance rail
Mark curling or distortion refer to that the smoother hour hands of resistance of the front end of first locus of impedance on the Smith chart move
Dynamic, resistance circle of the low frequency end of first locus of impedance on the Smith chart moves counterclockwise；
When being connected between the device to be matched and the terminal after first inductance and the first capacitor are in parallel, institute
It states the curling of the first locus of impedance or distortion refers to electricity of the front end of first locus of impedance on the Smith chart
Rounding moves clockwise, and conductance circle of the low frequency end of first locus of impedance on the Smith chart moves counterclockwise.
8. being existed according to data radio station wideband impedance match network design method, feature described in claim 4 to 7 any one
In the data radio station wideband impedance match network further includes third inductance or third capacitor, the third inductance or described
Three capacitors are arranged in parallel or in series between the device to be matched and the terminal.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713904A (en) * | 2020-12-23 | 2021-04-27 | 陕西烽火电子股份有限公司 | Composite tuning network and antenna tuner |
| CN113242029A (en) * | 2021-05-12 | 2021-08-10 | 西北工业大学深圳研究院 | Multi-frequency impedance matching method based on lumped element |
| CN115659891A (en) * | 2022-11-23 | 2023-01-31 | 荣耀终端有限公司 | Optimization method of resonant network and electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277754A (en) * | 1998-08-28 | 2000-12-20 | 三菱电机株式会社 | Two-frequency impedance matching circuit |
| CN101084623A (en) * | 2004-10-29 | 2007-12-05 | 北电网络有限公司 | Band reject filters |
| CN102075158A (en) * | 2010-12-29 | 2011-05-25 | 重庆邮电大学 | Method for designing ultra wideband impedance matching network |
| CN103454654A (en) * | 2013-09-11 | 2013-12-18 | 中国电子科技集团公司第五十四研究所 | Configurable matching network used at satellite navigation radio frequency front end |
| CN104285373A (en) * | 2012-03-19 | 2015-01-14 | 盖尔创尼克斯有限公司 | Broadband matching circuits |
| US20150179406A1 (en) * | 2012-06-15 | 2015-06-25 | Ecole Polytechnique | Electrical circuit to impedance match a source and a load at multiple frequencies, method to design such a circuit |
| CN108051825A (en) * | 2017-11-30 | 2018-05-18 | 苏州切思特电子有限公司 | One kind is based on T-shaped high-pass filter on-vehicle positioning terminal |
-
2018
- 2018-05-25 CN CN201810516302.2A patent/CN108832907A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277754A (en) * | 1998-08-28 | 2000-12-20 | 三菱电机株式会社 | Two-frequency impedance matching circuit |
| CN101084623A (en) * | 2004-10-29 | 2007-12-05 | 北电网络有限公司 | Band reject filters |
| CN102075158A (en) * | 2010-12-29 | 2011-05-25 | 重庆邮电大学 | Method for designing ultra wideband impedance matching network |
| CN104285373A (en) * | 2012-03-19 | 2015-01-14 | 盖尔创尼克斯有限公司 | Broadband matching circuits |
| US20150179406A1 (en) * | 2012-06-15 | 2015-06-25 | Ecole Polytechnique | Electrical circuit to impedance match a source and a load at multiple frequencies, method to design such a circuit |
| CN103454654A (en) * | 2013-09-11 | 2013-12-18 | 中国电子科技集团公司第五十四研究所 | Configurable matching network used at satellite navigation radio frequency front end |
| CN108051825A (en) * | 2017-11-30 | 2018-05-18 | 苏州切思特电子有限公司 | One kind is based on T-shaped high-pass filter on-vehicle positioning terminal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713904A (en) * | 2020-12-23 | 2021-04-27 | 陕西烽火电子股份有限公司 | Composite tuning network and antenna tuner |
| CN113242029A (en) * | 2021-05-12 | 2021-08-10 | 西北工业大学深圳研究院 | Multi-frequency impedance matching method based on lumped element |
| CN115659891A (en) * | 2022-11-23 | 2023-01-31 | 荣耀终端有限公司 | Optimization method of resonant network and electronic equipment |
| CN115659891B (en) * | 2022-11-23 | 2023-05-16 | 荣耀终端有限公司 | Optimization method of resonant network and electronic equipment |
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