CN110504945A - A kind of restructural loop filtering device - Google Patents
A kind of restructural loop filtering device Download PDFInfo
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- CN110504945A CN110504945A CN201910716594.9A CN201910716594A CN110504945A CN 110504945 A CN110504945 A CN 110504945A CN 201910716594 A CN201910716594 A CN 201910716594A CN 110504945 A CN110504945 A CN 110504945A
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- disappearance mould
- bias voltage
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- 238000001914 filtration Methods 0.000 title claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 230000008034 disappearance Effects 0.000 claims description 170
- 230000009471 action Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 description 17
- 238000010168 coupling process Methods 0.000 description 17
- 238000005859 coupling reaction Methods 0.000 description 17
- 238000012360 testing method Methods 0.000 description 17
- 239000000758 substrate Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/205—Constructional features of resonators consisting of piezoelectric or electrostrictive material having multiple resonators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
- H03H9/545—Filters comprising resonators of piezo-electric or electrostrictive material including active elements
Abstract
The invention discloses a kind of restructural loop filtering devices.First regulating device cleverly combined and application with filter and multiple bias voltage sources, ensure that user of service can be directly by adjusting the first regulating device, multiple bias voltage sources are adjusted, so that the filter is reached expected filter effect, improves the property easy to use of loop filtering device.
Description
Technical field
The present invention relates to wireless communication technique more particularly to a kind of restructural loop filtering devices.
Background technique
Currently, military power all specifies numerous r and D Programs to system integrated technique in the world.Especially
It is that USN, Air Force experiment room and defense advanced beforehand research Plan Bureau (DARPA) have carried out for a long time stage by stage in the field
Multiple project research work；Also there is similar project in Europe；Other countries and district government have also put into largely
Man power and material studied.Wherein, the problem of different frequency signals passage interference is one in multi-band communication systems
Item urgent problem.
Filter in the prior art in practical application, need to filter practical operation adjust and test, with
So that filter is reached desired effect, but be that non-those skilled in the art is unfamiliar with art technology, in debugging filter
When parameter, need those skilled in the art in other assist in debugging, and debugging process is complicated, labor intensive resource is not easy to practical application.
Summary of the invention
For the prior art and its problem, the purpose of the present invention is to provide a kind of loop filtering devices.It is existing to solve
Filter, non-this field worker need to filter practical operation adjust and test so that filter network reaches pre-
Think effect, needs those skilled in the art in other assist in debugging, by debugging process complexity, labor intensive resource is not easy to practical application
The problem of.
The present invention is realized by the following technical scheme:
Including shell, filter, multiple bias voltage sources and the first regulating device, the filter and the multiple
Bias voltage source is set to the enclosure interior, and first regulating device is set to the hull outside,
The filter is connect with multiple bias voltage sources, first regulating device and multiple bias voltage sources
Connection, for adjusting the bias voltage of the bias voltage source, applies the filter by multiple bias voltage sources
Under the action of the bias voltage added, the signal of input is filtered, and two signals that output phase is identical or opposite；
The filter includes multiple disappearance mould resonators, each disappearance mould resonator is hollow tubular structure, often
The side of one disappearance mould resonator is provided with a piezoelectric actuator, the piezoelectric actuator and the disappearance mould resonator
Form cavity body structure；
Each described piezoelectric actuator connects a bias voltage source in the multiple bias voltage source.
Optionally, the filter is humorous including the first disappearance mould resonator, the second disappearance mould resonator, third disappearance mould
Shake device, the 4th disappearance mould resonator and four transfiguration circuits；
The first disappearance mould resonator, the second disappearance mould resonator, third disappearance mould resonator, the 4th disappearance mould resonance
Device is annularly distributed, and passes through a transfiguration circuit connection between two adjacent disappearance mould resonators, wherein each institute
A bias voltage source in the multiple bias voltage source of transfiguration circuit connection is stated, to receive the bias voltage source application
Bias voltage,
The first disappearance mould resonator and the 4th external input signal of disappearance mould resonator, four transfiguration circuits exist
Under the action of the bias voltage that multiple bias voltage sources apply, co-operatively to the input signal between four resonators
It is filtered, keeps output phase at the second disappearance mould resonator and the third disappearance mould resonator identical or opposite
Two signals.
Optionally, the transfiguration circuit includes varactor element, and the first Chip-R connecting with the varactor element,
The transfiguration circuit connects bias voltage source far from one end of the varactor element by first Chip-R, wherein institute
Varactor element is stated to connect with one end on two neighboring disappearance mould resonator.
Optionally, the varactor element is the first diode of common cathode, the second diode, the 1st of the common cathode the
Pole pipe, the second diode cathode pass through Chip-R connect bias voltage source, the first diode of the common cathode, the two or two
Two anodes of pole pipe are connect with one end on two neighboring disappearance mould resonator respectively.
Optionally, the filter further includes four signal circuits；
The other end of the first disappearance mould resonator and the 4th disappearance mould resonator is respectively passed through a signal
The transmission of electricity external input signal in road, the return loss that the signal circuit inputs for reducing signal.
Optionally, the second disappearance mould resonator and the third disappearance mould resonator are respectively transmitted through a signal
Circuit output signal, the signal circuit are also used to reduce the return loss of signal output.
Optionally, the signal circuit includes the third diode of common cathode, the 4th diode, the common cathode
Third diode, the 4th diode cathode by the second Chip-R connect bias voltage source, the 3rd 2 of the common cathode the
Pole pipe, the 4th diode anode one end connect with one end of the disappearance mould resonator, the third diode of the common cathode,
The anode other end output signal of 4th diode or the external input signal.
Optionally, the loop filtering device further includes display device；
The display device is set to the hull outside, and the display device is connect with the filter, for showing
The centre frequency for showing input signal and output signal in the filter is also used to show phase difference between output signal.
The present invention has the advantage that
The present invention provides restructural loop filtering devices, including shell, filter, multiple bias voltage sources and first
Regulating device, the filter and the multiple bias voltage source are set to the enclosure interior, first regulating device
It is set to the hull outside,
The filter is connect with multiple bias voltage sources, first regulating device and multiple bias voltage sources
Connection, for adjusting the bias voltage of the bias voltage source, applies the filter by multiple bias voltage sources
Under the action of the bias voltage added, the signal of input is filtered, and two signals that output phase is identical or opposite.
So that non-this field staff in the case where not knowing art technology, directly passes through and adjusts the first regulating device to multiple
Bias voltage source is adjusted, so that filter reaches target effect to the filtering processing of input signal.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of loop filtering device provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another loop filtering device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the third loop filtering device provided in an embodiment of the present invention；
Fig. 4 a is that the function of annular filter in the embodiment of the present invention divides S parameter test chart (S21, S31)；
Fig. 4 b is that the function of annular filter in the embodiment of the present invention divides S parameter test chart (S11, S41)；
Fig. 5 is that the function of annular filter in the embodiment of the present invention divides phase of output signal degree of unbalancedness test chart；
Fig. 6 a is the balun S parameter test chart (S24, S34) of annular filter in the embodiment of the present invention；
Fig. 6 b is the balun S parameter test chart (S14, S44) of annular filter in the embodiment of the present invention；
Fig. 7 is the balun phase of output signal degree of unbalancedness test chart of annular filter in the embodiment of the present invention；
Fig. 8 a is the restructural parameter testing figure (S21, S31) of bandwidth of annular filter in the embodiment of the present invention；
Fig. 8 b is the restructural parameter testing figure (S24, S34) of bandwidth of annular filter in the embodiment of the present invention；
Fig. 9 a is the function point of annular filter in the embodiment of the present invention than restructural parameter testing figure (S21, S31)；
Fig. 9 b is the function point of annular filter in the embodiment of the present invention than restructural parameter testing figure (S24, S34).
Icon: 1- filter；10- the first disappearance mould resonator；20- the second disappearance mould resonator；30- third disappearance mould
Resonator；The 4th disappearance mould resonator of 40-；50- transfiguration circuit；51- varactor element；511- first diode；512- the two or two
Pole pipe；The first Chip-R of 52-；53- bias voltage source；60- substrate；61- copper foil；70- signal circuit；71- the three or two
Pole pipe；The 4th diode of 72-；The second Chip-R of 73-；80- piezoelectric actuator.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail.
A kind of loop filtering device provided in an embodiment of the present invention, including shell, filter, multiple bias voltage sources and
First regulating device, the filter and the multiple bias voltage source are set to the enclosure interior, and described first is adjusted
Device is set to the hull outside,
The filter is connect with multiple bias voltage sources, first regulating device and multiple bias voltage sources
Connection, for adjusting the bias voltage of the bias voltage source, applies the filter by multiple bias voltage sources
Under the action of the bias voltage added, the signal of input is filtered, and two signals that output phase is identical or opposite.
Optionally, the shell can be hollow cuboid, can also be other hollow solid figures.
Optionally, first regulating device can be one or more rotation regulating switch.Described first adjusts dress
Set the scale for indicating adjustable numerical value.
In the prior art, the ginseng because non-those skilled in the art is unfamiliar with art technology, in adjusting, test filter
When number, need those skilled in the art in other assist in debugging, process labor intensive resource, inconvenience.
In the embodiment of the present invention, by the way that the first regulating device for connecting with multiple bias voltage sources is arranged, pass through adjusting the
One regulating device is in turn adjusted multiple bias voltage sources, so that non-this field staff is not knowing art technology
In the case where, directly multiple bias voltage sources 53 are adjusted by adjusting the first regulating device, so that filter is to defeated
The filtering processing for entering signal reaches target effect.Achieve the purpose that saving manpower uses, and to the tune of multiple bias voltage sources
Section process is convenient, fast.
Non- this field staff can be adjusted according to the scale for indicating adjustable numerical value in first regulating device
Target value scale is saved, and then reaches the adjusting to multiple bias voltage sources, so that filtering of the filter to input signal
Processing reaches target effect.
Referring to Fig. 1, Fig. 1 is a kind of structural schematic diagram of filter provided in an embodiment of the present invention.Filter 1 wraps
Include the first disappearance mould resonator 10, the second disappearance mould resonator 20, third disappearance mould resonator 30, the 4th disappearance mould resonator 40
And four transfiguration circuits 50；
The first disappearance mould resonator 10, the second disappearance mould resonator 20, third disappearance mould resonator the 30, the 4th disappear
Mould resonator 40 is annularly distributed, and is connected between two adjacent disappearance mould resonators by a transfiguration circuit 50, institute
The first disappearance mould resonator 10 and the external input signal of the 4th disappearance mould resonator 40 are stated, so that the input signal passes through four
Cooperation between disappearance mould resonator and four transfiguration circuits 50 disappears from the second disappearance mould resonator 20 and the third
Two identical or opposite signals of output phase at mould resonator 30.
In the prior art, oversized since structure is complicated for filter system, significant energy consumption is brought, is not met
Current receiving and transmitting front end circuit miniaturization, integrated, low energy consumption main trend.
Filter 1 is formed by using disappearance mould resonator in the embodiment of the present invention, which is microwave passive
Network, so that 1 energy loss of filter is low, structure is simple, is easily worked realization, meet current circuit miniaturization, it is integrated,
The main trend of low energy consumption.
Optionally, in embodiments of the present invention four disappearance mould resonators and four transfiguration circuits 50 are mounted on same base
On plate 60, four disappearance mould resonators are connect by micro-strip with the transfiguration circuit 50, and substrate 60 is using model
The substrate of Rogers4350B, substrate 60 with a thickness of 60 Mills, be wherein additionally provided with signal input port and signal on substrate 60
Output port, wherein signal input port and signal output port are respectively arranged with sub-miniature A connector, the first disappearance mould resonator 10,
Sub-miniature A connector connection on co-planar waveguide and signal input port on 4th disappearance mould resonator 40, the second disappearance mould resonator
20, the sub-miniature A connector connection on the co-planar waveguide and signal output port on third disappearance mould resonator 30.
In the prior art, filter excessively relies on three magnetic couplings generated between resonator and one is electrically coupled realization
The function of fixed skew between output signal, but be electrically coupled by three magnetic couplings between resonator and one only realize it is defeated
Out between signal fixed skew function, also needed in follow-up signal acquisition process extraly to the phase of signal at
Reason, can not directly obtain two signals that target phase difference, bandwidth, function are divided to ratio, and the total process of signal for obtaining target phase difference is multiple
Cost that is miscellaneous, inconvenient, and needing additionally to handle the phase of signal.
In embodiments of the present invention, staff can be by the capacitance variation of control transfiguration circuit 50, so that arbitrarily
Capacitive coupling occurs between two neighboring disappearance mould resonator, at this time two disappearance moulds of arbitrary neighborhood in four disappearance mould resonators
Resonator can be inductive coupling or capacitive coupling, so that input signal passes through four disappearance mould resonators and four transfiguration circuits
Cooperation between 50, from output phase from the second disappearance mould resonator 20 and third disappearance mould resonator 30 it is identical or opposite two
A signal.Phase difference between the phase of two of them signal and two signals can be controlled by staff.With
The total process of signal for keeping acquisition phase identical or different is convenient, fast, avoids the cost of extra Phase Processing.
Optionally, each disappearance mould resonator can output signal, external input signal and connection signal terminal.
In embodiments of the present invention, the transfiguration circuit 50 includes varactor element 51, and is connected with the varactor element 51
The first Chip-R 52 connect, the transfiguration circuit 50 pass through one of first Chip-R 52 far from the varactor element 51
End connection bias voltage source 53, wherein the varactor element 51 is connect with one end on two neighboring disappearance mould resonator.
Optionally, the varactor element 51 is connect with the micro-strip on two neighboring disappearance mould resonator.
Optionally, the varactor element 51 is the first diode 511 of common cathode, the second diode 512, the common cathode
First diode 511, the second diode 512 cathode by the first Chip-R 52 connect bias voltage source 53, it is described total
The first diode 511 of cathode, the second diode 512 two anodes respectively with one end on two neighboring disappearance mould resonator
Connection.
In the embodiment of the present invention, optionally, first diode 511 can be the diode of label C9, C11, C13, C15；
Second diode 512 can be the diode of label C10, C12, C14, C16；First Chip-R 52 can for label R5, R6,
The resistance of R7, R8.
Optionally, slot on substrate 60, by substrate 60 copper facing connect disappearance mould resonator and realize that capacitive character is negative
Carry, minor matters are added on capacity load, the through-hole that the minor matters other end is beaten on substrate be connected to disappearance mould resonator relative to
The another side of substrate 60 loads varactor, realizes inductive coupling and capacitive coupling switching and adjusting between grade.
If the varactor element is not two diodes of common cathode, when bias voltage is input to transfiguration circuit
When, it is easy to influence the filter to the filter effect of input signal.Varactor element 51 in the embodiment of the present invention is set as altogether
Two diodes of cathode, the voltage when bias voltage 53 is input to the transfiguration circuit 50, at two diode common cathodes
It raises simultaneously, capacitor increases, and due to the one-way conduction of diode, can't make current direction disappearance mould resonator, and then not
The filter effect of the filter 1 can be impacted.
Wherein, the bias voltage that bias voltage source 53 provides is DC offset voltage.It is mentioned by controlling bias voltage source 53
The bias voltage of confession increases, and voltage value increases at the cathode of the first diode 511 and the second diode 512, and then leads
The capacitor of the first diode 511 and the second diode 512 is caused to increase, so that generating electricity between two disappearance mould resonators
Hold coupling.
Optionally, each diode in the embodiment of the present invention is the varactor of model MA46H201, the present invention
The equal model 0402 of each Chip-R in embodiment encapsulates 100 kilo-ohms of Chip-R.
In the embodiment of the present invention, when staff needs to get two signals that phase difference is 180 °, by changing institute
State the first disappearance mould resonator 10 and third disappearance mould resonator 30, the first disappearance mould resonator 10 and the second disappearance mould resonator
The capacitance of transfiguration circuit 50 between 20, between the second disappearance mould resonator 20 and the 4th disappearance mould resonator 40, so that institute
State the first disappearance mould resonator 10 and third disappearance mould resonator 30, the first disappearance mould resonator 10 and the second disappearance mould resonator
20, generate and be electrically coupled between the second disappearance mould resonator 20 and the 4th disappearance mould resonator 40, third disappearance mould resonator 30 with
Magnetic coupling is generated between the output of 4th disappearance mould resonator 40.Wherein, by the external input signal of the 4th disappearance mould resonator 40,
First disappearance mould resonator, 10 outer signal terminal, to pass input signals through four disappearance mould resonators and four transfiguration circuits
Cooperation between 50, can be from two that the second disappearance mould resonator 20 and 30 phase difference output of third disappearance mould resonator are 180 °
A signal, the opposite in phase of two of them signal.Realize the function of the balun filtering of the loop filtering device in the embodiment of the present invention
Energy.
Optionally, by changing the first disappearance mould resonator 10 and third disappearance mould resonator 30, the first disappearance mould
Between resonator 10 and the second disappearance mould resonator 20, between the second disappearance mould resonator 20 and the 4th disappearance mould resonator 40
The capacitance of transfiguration circuit 50, so that the first disappearance mould resonator 10 and third disappearance mould resonator 30, the first disappearance mould
Resonator 10 and the second disappearance mould resonator 20 generate electricity between second disappearance mould resonator 20 and the 4th disappearance mould resonator 40
Coupling generates magnetic coupling between third disappearance mould resonator 30 and the output of the 4th disappearance mould resonator 40.Wherein disappear by first
Die the external input signal of mould resonator 10, and the 4th disappearance mould resonator outer signal terminal is disappeared with passing input signals through four
The cooperation died between mould resonator and four transfiguration circuits 50, can be from the second disappearance mould resonator 20 and third disappearance mould resonance
The output of device 30 and 0 ° of phase phase difference of input signal of two signals, the phase of two of them signal is identical, realizes that the present invention is real
Apply the function of the function point filtering of the loop filtering device in example.
Coefficient of coup relationship between specific two neighboring resonator are as follows: F34=-F0, F12=F13=F24=F0, wherein F12
For the coefficient of coup between the first disappearance mould resonator 10 and the second disappearance mould resonator 20, F34For third disappearance mould resonance
The coefficient of coup between device 30 and the 4th disappearance mould resonator 40, F13For the first disappearance mould resonator 10 and third disappearance mould
The coefficient of coup between resonator 30, F24For the coupled systemes between the second disappearance mould resonator 20 and the 4th disappearance mould resonator 40
Number, F0Coefficient of coup when capacitive coupling ,-F are generated between two neighboring disappearance mould resonator0It is humorous for two neighboring disappearance mould
Coefficient of coup when inductive coupling is generated between vibration device.
Optionally, the filter 1 in the embodiment of the present invention further includes four signal circuits 70；
First disappearance mould resonator 10, the 4th disappearance mould resonator 40 are respectively external defeated through a signal circuit 70
Enter signal, the return loss that the signal circuit 70 inputs for reducing signal.
Third disappearance mould resonator 20, third disappearance mould resonator 30 are respectively through the output of signal circuit 70 letter
Number, the signal circuit 70 is also used to reduce the return loss of signal output.
Optionally, the signal circuit 70 includes third diode 71, the 4th diode 72 of common cathode, described total
The third diode 71 of cathode, the cathode of the 4th diode 72 connect bias voltage source 53 by the second Chip-R 73, described
The third diode 71 of common cathode, anode one end of the 4th diode 72 are connect with one end of the resonator, the common cathode
Third diode 71, the 4th diode 72 anode other end output signal or the external input signal.
It can be biased by adjusting between disappearance mould resonator and signal input part, signal output end in the embodiment of the present invention
The size for the bias voltage that voltage source 53 provides controls and generates capacitor coupling between resonator and signal input part, signal output end
It closes, promotes stiffness of coupling between the two, and then reduce the return loss of signal output.
In the embodiment of the present invention, optionally, third diode 71 can be the diode of label C1, C3, C5, C7；4th
Diode 72 can be the diode of label C10, C12, C14, C16；Second Chip-R 73 can be label R5, R6, R7, R8
Resistance.
Fig. 2 is please referred to, Fig. 2 is the structural schematic diagram of another loop filtering device provided in an embodiment of the present invention.
One layer of copper foil 61 is covered on substrate 60, four piezoelectric actuators are mounted on substrate 30 by copper foil 31.
Wherein, each disappearance mould resonator is hollow tubular structure, and the side of each disappearance mould resonator is all provided with
It is equipped with a piezoelectric actuator 80, the piezoelectric actuator 80 forms cavity body structure with the disappearance mould resonator.
Each described piezoelectric actuator 80 connects a bias voltage source 53 in multiple bias voltage sources, so that inclined
The piezoelectric actuator 80 is moved relative to the disappearance mould resonator under the action of setting the bias voltage of the application of voltage source 53, shadow
The size of the cavity body structure is rung, and then adjusts the centre frequency of the input signal.And then the frequency of adjustable filter 1
Rate, bandwidth, function point ratio, wherein bandwidth, function point compare the capacitance adjustment with 51.
Optionally, each disappearance mould resonator is Nian Jie by conductive silver paste with piezoelectric actuator 80.
Optionally, the piezoelectric actuator 80 in the embodiment of the present invention is ceramic brake device.
Optionally, piezoelectric actuator 80 is braked using the piezoelectricity of model T216-A4NO-05 in the embodiment of the present invention
Device.
In the embodiment of the present invention, by being provided with a piezoelectric actuator in the side of each disappearance mould resonator
80, the piezoelectric actuator 80 forms cavity body structure with the disappearance mould resonator.Each described piezoelectric actuator connection is more
A bias voltage source 53 in a bias voltage source, so that described under the action of the bias voltage that bias voltage source 53 applies
Piezoelectric actuator 80 is moved relative to the disappearance mould resonator, influences the size of the cavity body structure, and then adjust described defeated
Enter the centre frequency of signal.So that the filter 1 has the function of that flexible modulation frequency, bandwidth, function divide ratio.
Optionally, the loop filtering device further includes display device；The display device is set to the hull outside,
The display device is connect with the filter, for showing the center of input signal and output signal in the filter
Frequency is also used to show phase difference between output signal.
Referring to Fig. 3, Fig. 3 is the structural schematic diagram of the third loop filtering device provided in an embodiment of the present invention.By
Design, emulation and optimization, finally determine the specific size of the constituted filter of filter 1 in the embodiment of the present invention such as
Under:
The shorter edge length L1 of substrate 60 is 45.1 millimeters, and the longer sides length L2 of substrate 60 is 46.1mm millimeters, substrate
60 height H1 is 1.524 millimeters, and the diameter D1 of resonator cavities is 12 millimeters, and the high H2 of resonator cavities is 20 microns, humorous
The diameter D2 of capacity load is 4mm in vibration device, and the length L3 of co-planar waveguide is 2.56 microns in resonator.
Fig. 4 is please referred to Fig. 9.Fig. 4 to Fig. 9 respectively illustrates the embodiment of the present invention and is provided by changing bias voltage source 53
Bias voltage, in different capacitances, in different biass, the S of the filter 1 joins each piezoelectric actuator 80 varactor
Several and phase of output signal degree of unbalancedness test result, test result show that design concept of the present invention is correctly feasible, wherein
Parameter when Fig. 8 a, Fig. 8 b are different bandwidth, when the first disappearance mould resonator 10 and the 4th disappearance mould 40 input signal of resonator
Test chart；Fig. 9 a, Fig. 9 b be different function point than when, the first disappearance mould resonator 10 and 40 input signal of the 4th disappearance mould resonator
When parameter testing figure.
In conclusion the embodiment of the present invention provides a kind of loop filtering device, which includes shell, filtering
Device, multiple bias voltage sources and the first regulating device, the filter and the multiple bias voltage source are set to described
Enclosure interior, first regulating device are set to the hull outside,
The filter is connect with multiple bias voltage sources, first regulating device and multiple bias voltage sources
Connection, for adjusting the bias voltage of the bias voltage source, applies the filter by multiple bias voltage sources
Under the action of the bias voltage added, the signal of input is filtered, and two signals that output phase is identical or opposite.
So that non-this field staff in the case where not knowing art technology, directly passes through and adjusts the first regulating device to multiple
Bias voltage source is adjusted, so that filter reaches target effect to the filtering processing of input signal.
Further, filter includes the first disappearance mould resonator, the second disappearance mould resonator, third disappearance mould resonance
Device, the 4th disappearance mould resonator and four transfiguration circuits；The first disappearance mould resonator, the second disappearance mould resonator,
Three disappearance mould resonators, the 4th disappearance mould resonator are annularly distributed, and pass through one between two adjacent disappearance mould resonators
The transfiguration circuit connection, wherein a bias voltage in each described the multiple bias voltage source of transfiguration circuit connection
Source, to receive the bias voltage that the bias voltage source applies, the first disappearance mould resonator and the 4th disappearance mould resonator
External input signal, four transfiguration circuits are humorous with four under the action of the bias voltage that multiple bias voltage sources apply
Co-operatively the input signal is filtered between vibration device, makes the second disappearance mould resonator and the third
Two identical or opposite signals of output phase at disappearance mould resonator.So that filter energy loss is low, structure is simple, holds
Easy processing is realized, current circuit miniaturization, integrated, low energy consumption main trend are met.And get target phase difference
Two signals are convenient and efficient, avoid the cost of extra Phase Processing.
Further, each disappearance mould resonator is hollow tubular structure, and the side of each disappearance mould resonator is equal
It is provided with a piezoelectric actuator, the piezoelectric actuator and the disappearance mould resonator form cavity body structure；Described in each
The external bias voltage of piezoelectric actuator, so that the piezoelectric actuator is for disappearing under the action of the bias voltage
The movement of mould resonator influences the size of the cavity body structure, and then adjusts the centre frequency of the input signal.
Further, the filter further includes four signal circuits；The first disappearance mould resonator and institute
The other end of the 4th disappearance mould resonator is stated respectively through an external input signal of signal circuit, the signal transmission electricity
The return loss that road inputs for reducing signal.The second disappearance mould resonator and the third disappearance mould resonator are respectively through one
A signal circuit output signal, the signal circuit are also used to reduce the return loss of signal output.So that
By adjusting the bias voltage size between disappearance mould resonator and signal circuit, controls disappearance mould resonator and signal is defeated
Enter and generate capacitive coupling between end, signal output end, promote stiffness of coupling between the two, and then reduces signal input or output
Return loss.
Above-described embodiment is only preferred embodiment, the protection scope being not intended to limit the invention, in spirit of the invention
With any modifications, equivalent replacements, and improvements made within principle etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of restructural loop filtering device, which is characterized in that including shell, filter, multiple bias voltage sources and
One regulating device, the filter and the multiple bias voltage source are set to the enclosure interior, and described first adjusts dress
It installs and is placed in the hull outside,
The filter is connect with multiple bias voltage sources, and first regulating device and multiple bias voltage sources connect
It connects, for adjusting the bias voltage of the bias voltage source, applies the filter by multiple bias voltage sources
Bias voltage under the action of, the signal of input is filtered, and two signals that output phase is identical or opposite；
The filter includes multiple disappearance mould resonators, each disappearance mould resonator is hollow tubular structure, each
The side of disappearance mould resonator is provided with a piezoelectric actuator, and the piezoelectric actuator is formed with the disappearance mould resonator
Cavity body structure；
Each described piezoelectric actuator connects a bias voltage source in the multiple bias voltage source.
2. a kind of loop filtering device according to claim 1, which is characterized in that the filter includes the first disappearance
Mould resonator, the second disappearance mould resonator, third disappearance mould resonator, the 4th disappearance mould resonator and four transfiguration circuits；
The first disappearance mould resonator, the second disappearance mould resonator, third disappearance mould resonator, the 4th disappearance mould resonator are in
Annular distribution passes through a transfiguration circuit connection, wherein each described change between two adjacent disappearance mould resonators
Capacitive circuit connects a bias voltage source in the multiple bias voltage source, to receive the biasing that the bias voltage source applies
Voltage,
The first disappearance mould resonator and the 4th external input signal of disappearance mould resonator, four transfiguration circuits are multiple
Under the action of the bias voltage that bias voltage source applies, co-operatively the input signal is carried out between four resonators
Filtering processing keeps output phase at the second disappearance mould resonator and the third disappearance mould resonator identical or opposite
Two signals.
3. loop filtering device according to claim 2, which is characterized in that the transfiguration circuit includes varactor element, with
And the first Chip-R being connect with the varactor element, the transfiguration circuit is by first Chip-R far from the change
The one end for holding element connects bias voltage source, wherein one end on the varactor element and two neighboring disappearance mould resonator connects
It connects.
4. loop filtering device according to claim 3, which is characterized in that the varactor element is the one or two of common cathode
Pole pipe, the second diode, the first diode of the common cathode, the second diode cathode biased electrical is connected by Chip-R
Potential source, two anodes respectively and on two neighboring disappearance mould resonator of the first diode of the common cathode, the second diode
One end connection.
5. loop filtering device according to claim 2, which is characterized in that the filter further includes that four signals pass
Transmission of electricity road；
The other end of the first disappearance mould resonator and the 4th disappearance mould resonator respectively transmits electricity through a signal
The external input signal in road, the return loss that the signal circuit inputs for reducing signal.
6. loop filtering device according to claim 5, which is characterized in that the second disappearance mould resonator and described
Respectively through a signal circuit output signal, the signal circuit is also used to reduce signal three disappearance mould resonators
The return loss of output.
7. according to loop filtering device described in any one of claim 5 and 6, which is characterized in that the signal circuit
Third diode, the 4th diode including common cathode, the third diode of the common cathode, the cathode of the 4th diode pass through
Second Chip-R connects bias voltage source, the third diode of the common cathode, the 4th diode anode one end with it is described
One end of disappearance mould resonator connects, the anode other end output signal of the third diode of the common cathode, the 4th diode
Or the external input signal.
8. loop filtering device according to claim 1, which is characterized in that the loop filtering device further includes display dress
It sets；
The display device is set to the hull outside, and the display device is connect with the filter, for showing
The centre frequency for stating input signal and output signal in filter is also used to show phase difference between output signal.
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