CN110504945B - Reconfigurable annular filtering device - Google Patents
Reconfigurable annular filtering device Download PDFInfo
- Publication number
- CN110504945B CN110504945B CN201910716594.9A CN201910716594A CN110504945B CN 110504945 B CN110504945 B CN 110504945B CN 201910716594 A CN201910716594 A CN 201910716594A CN 110504945 B CN110504945 B CN 110504945B
- Authority
- CN
- China
- Prior art keywords
- mode resonator
- evanescent mode
- bias voltage
- diode
- evanescent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 67
- 230000008054 signal transmission Effects 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 description 23
- 238000010168 coupling process Methods 0.000 description 23
- 238000005859 coupling reaction Methods 0.000 description 23
- 238000012360 testing method Methods 0.000 description 16
- 239000000758 substrate Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003631 expected effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
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 piezoelectric or electrostrictive material
- H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a reconfigurable annular filtering device. The first adjusting device, the filtering device and the plurality of bias voltage sources are ingeniously combined and applied, so that a user can directly adjust the plurality of bias voltage sources by adjusting the first adjusting device, the filtering device achieves an expected filtering effect, and the use convenience of the annular filtering device is improved.
Description
Technical Field
The invention relates to a wireless communication technology, in particular to a reconfigurable annular filtering device.
Background
At present, military and strong countries in the world appoint a plurality of research and development plans for system integration technology. In particular, the united states navy, air force laboratories, and the defense advanced pre-research program agency (DARPA) have conducted long-term, staged, multiple project research efforts in this area; similar research programs have emerged in europe; other countries and governments have also invested large amounts of manpower and material resources for research. The problem of interference of signal channels with different frequencies is an urgent problem to be solved in a multiband communication system.
When the filtering device in the prior art is actually applied, the filtering device needs to be actually operated, adjusted and tested so as to enable the filtering device to achieve the expected effect, but workers in the non-field are unfamiliar with the technology in the field, and when parameters in the filtering device are debugged, the debugging needs to be assisted by people in the field, and the debugging process is complex, consumes manpower resources, and is not convenient for actual application.
Disclosure of Invention
In view of the prior art and the problems thereof, an object of the present invention is to provide a loop filter apparatus. The problem that workers in the non-field need to adjust and test the actual operation of the filtering device to enable a filtering network to achieve the expected effect, the workers in the field need to assist debugging nearby, the debugging process is complex, manpower resources are consumed, and practical application is inconvenient to achieve is solved.
The invention is realized by the following technical scheme:
comprises a shell, a filtering device, a plurality of bias voltage sources and a first adjusting device, wherein the filtering device and the plurality of bias voltage sources are arranged in the shell, the first adjusting device is arranged outside the shell,
the filtering device is connected with a plurality of bias voltage sources, and the first adjusting device is connected with the plurality of bias voltage sources and is used for adjusting the bias voltages of the bias voltage sources, so that the filtering device carries out filtering processing on input signals under the action of the bias voltages applied by the plurality of bias voltage sources and outputs two signals with the same or opposite phases;
the filtering device comprises a plurality of evanescent mode resonators, each evanescent mode resonator is of a hollow tubular structure, one side of each evanescent mode resonator is provided with a piezoelectric actuator, and the piezoelectric actuators and the evanescent mode resonators form a cavity structure;
each of the piezoelectric actuators is connected to one of the plurality of bias voltage sources.
Optionally, the filtering device includes a first evanescent mode resonator, a second evanescent mode resonator, a third evanescent mode resonator, a fourth evanescent mode resonator, and four varactor circuits;
the first evanescent mode resonator, the second evanescent mode resonator, the third evanescent mode resonator and the fourth evanescent mode resonator are distributed in a ring shape, two adjacent evanescent mode resonators are connected through one varactor circuit, each varactor circuit is connected with one bias voltage source in the plurality of bias voltage sources to receive bias voltages applied by the bias voltage sources,
the four variable capacitance circuits are matched with the four resonators to filter the input signals under the action of bias voltages applied by a plurality of bias voltage sources, so that two signals with the same or opposite phases are output at the second evanescent-mode resonator and the third evanescent-mode resonator.
Optionally, the varactor circuit includes a varactor element, and a first patch resistor connected to the varactor element, and the varactor circuit is connected to a bias voltage source through an end of the first patch resistor away from the varactor element, where the varactor element is connected to one end of each of two adjacent evanescent mode resonators.
Optionally, the varactor elements are a first diode and a second diode sharing a cathode, cathodes of the first diode and the second diode sharing the cathode are connected with a bias voltage source through a chip resistor, and two anodes of the first diode and the second diode sharing the cathode are respectively connected with one end of each of two adjacent evanescent mode resonators.
Optionally, the filtering apparatus further includes four signal transmission circuits;
the other ends of the first evanescent mode resonator and the fourth evanescent mode resonator are respectively externally connected with input signals through the signal transmission circuit, and the signal transmission circuit is used for reducing return loss of signal input.
Optionally, the second evanescent mode resonator and the third evanescent mode resonator each output a signal via one signal transmission circuit, and the signal transmission circuit is further configured to reduce return loss of signal output.
Optionally, the signal transmission circuit includes a common-cathode third diode and a common-cathode fourth diode, cathodes of the common-cathode third diode and cathodes of the common-cathode fourth diode are connected to a bias voltage source through a second chip resistor, anode ends of the common-cathode third diode and anodes of the common-cathode fourth diode are connected to one end of the evanescent mode resonator, and other ends of anodes of the common-cathode third diode and anodes of the common-cathode fourth diode output signals or are externally connected to the input signals.
Optionally, the annular filter device further includes a display device;
the display device is arranged on the outer side of the shell, connected with the filtering device and used for displaying the central frequency of the input signal and the central frequency of the output signal in the filtering device and displaying the phase difference between the output signals.
The invention has the following advantages:
the invention provides a reconfigurable annular filter device, which comprises a shell, a filter device, a plurality of bias voltage sources and a first regulating device, wherein the filter device and the plurality of bias voltage sources are arranged in the shell, the first regulating device is arranged outside the shell,
the filtering device is connected with a plurality of bias voltage sources, and the first adjusting device is connected with the plurality of bias voltage sources and is used for adjusting the bias voltages of the bias voltage sources, so that the filtering device carries out filtering processing on input signals under the action of the bias voltages applied by the plurality of bias voltage sources and outputs two signals with the same or opposite phases. So that a non-skilled worker can directly adjust the plurality of bias voltage sources by adjusting the first adjusting device under the condition that the skilled worker is not aware of the technical skill in the art, so that the filtering device can achieve the target effect on the filtering processing of the input signal.
Drawings
Fig. 1 is a schematic structural diagram of an annular filter device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another annular filter apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third annular filter device according to an embodiment of the present invention;
fig. 4a is a test diagram of power division S parameters of the annular filter device in the embodiment of the present invention (S21, S31);
fig. 4b is a test diagram (S11, S41) of power division S parameters of the annular filter device according to the embodiment of the present invention;
fig. 5 is a diagram illustrating a test of phase imbalance of power division output signals of the annular filter device according to an embodiment of the present invention;
FIG. 6a is a test chart of balun S parameters of the annular filter device in the embodiment of the present invention (S24, S34);
FIG. 6b is a diagram of a test chart of balun S-parameters of the annular filter device in an embodiment of the present invention (S14, S44);
FIG. 7 is a diagram illustrating a phase imbalance test of the balun output signals of the annular filter device according to an embodiment of the present invention;
FIG. 8a is a bandwidth reconfigurable parameter test chart (S21, S31) of the annular filter device in the embodiment of the present invention;
FIG. 8b is a bandwidth reconfigurable parameter test chart (S24, S34) of the annular filter device in the embodiment of the present invention;
fig. 9a is a power division ratio reconfigurable parameter test chart (S21, S31) of the annular filter device in the embodiment of the present invention;
fig. 9b is a power division ratio reconfigurable parameter test diagram (S24, S34) of the annular filter apparatus according to the embodiment of the present invention.
Icon: 1-a filtering means; 10-a first evanescent-mode resonator; 20-a second evanescent-mode resonator; 30-a third evanescent-mode resonator; 40-a fourth evanescent-mode resonator; 50-a varactor circuit; 51-a varactor element; 511-a first diode; 512-a second diode; 52-first chip resistance; 53-bias voltage source; 60-a substrate; 61-copper foil; 70-a signal transmission circuit; 71-a third diode; 72-a fourth diode; 73-a second chip resistor; 80-piezoelectric actuator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments and the accompanying drawings.
The annular filter device provided by the embodiment of the invention comprises a shell, a filter device, a plurality of bias voltage sources and a first adjusting device, wherein the filter device and the plurality of bias voltage sources are arranged in the shell, the first adjusting device is arranged on the outer side of the shell,
the filtering device is connected with a plurality of bias voltage sources, and the first adjusting device is connected with the plurality of bias voltage sources and is used for adjusting the bias voltages of the bias voltage sources, so that the filtering device carries out filtering processing on input signals under the action of the bias voltages applied by the plurality of bias voltage sources and outputs two signals with the same or opposite phases.
Optionally, the housing may be a hollow cuboid, or may also be another hollow three-dimensional figure.
Alternatively, the first adjustment device may be one or more rotary adjustment switches. The first adjusting device is marked with scales capable of adjusting numerical values.
In the prior art, workers not in the field are unfamiliar with the technology in the field, and the workers in the field need to assist in debugging nearby when adjusting and testing parameters in the filtering device, so that the process consumes manpower resources and is inconvenient.
In the embodiment of the present invention, the first adjusting device connected to the multiple bias voltage sources is provided, and the multiple bias voltage sources are adjusted by adjusting the first adjusting device, so that a non-skilled worker directly adjusts the multiple bias voltage sources 53 by adjusting the first adjusting device without knowing the technique in the art, so that the filtering device achieves a target effect on the filtering process of the input signal. The aim of saving manpower is achieved, and the adjustment process of the plurality of bias voltage sources is convenient and quick.
The staff in the non-field can adjust to the target value scale according to the scale marked with the adjustable value on the first adjusting device, so as to adjust the plurality of bias voltage sources, and enable the filtering device to filter the input signal to achieve the target effect.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a filtering apparatus according to an embodiment of the present invention. The filtering device 1 comprises a first evanescent mode resonator 10, a second evanescent mode resonator 20, a third evanescent mode resonator 30, a fourth evanescent mode resonator 40 and four varactor circuits 50;
the first evanescent mode resonator 10, the second evanescent mode resonator 20, the third evanescent mode resonator 30 and the fourth evanescent mode resonator 40 are distributed in a ring shape, two adjacent evanescent mode resonators are connected through one varactor circuit 50, the first evanescent mode resonator 10 and the fourth evanescent mode resonator 40 are externally connected with input signals, so that the input signals are matched with the four varactor circuits 50 through the four evanescent mode resonators, and two signals with the same or opposite phases are output from the second evanescent mode resonator 20 and the third evanescent mode resonator 30.
In the prior art, the filter system has a complex structure and an overlarge size, so that the filter system has remarkable energy consumption and does not conform to the mainstream trend of miniaturization, integration and low energy consumption of the existing transceiving front-end circuit.
In the embodiment of the invention, the evanescent mode resonators are adopted to form the filtering device 1, and the filtering device 1 is a microwave passive network, so that the filtering device 1 has low energy loss, simple structure and easy processing and realization, and accords with the mainstream trend of miniaturization, integration and low energy consumption of the current circuit.
Optionally, in the embodiment of the present invention, four evanescent mode resonators and four varactor circuits 50 are mounted on the same substrate 60, the four evanescent mode resonators are connected to the varactor circuits 50 through microstrips, the substrate 60 is a substrate of a Rogers4350B type, the thickness of the substrate 60 is 60 mils, the substrate 60 is further provided with a signal input port and a signal output port, the signal input port and the signal output port are respectively provided with SMA joints, the coplanar waveguides on the first evanescent mode resonator 10 and the fourth evanescent mode resonator 40 are connected to the SMA joint on the signal input port, and the coplanar waveguides on the second evanescent mode resonator 20 and the third evanescent mode resonator 30 are connected to the SMA joint on the signal output port.
In the prior art, a filtering device excessively depends on three magnetic couplings and one electric coupling generated between resonators to realize the function of fixing the phase difference between output signals, but only realizes the function of fixing the phase difference between the output signals through the three magnetic couplings and the one electric coupling between the resonators, the phase of the signals needs to be additionally processed in the subsequent signal acquisition process, two signals of a target phase difference, a target bandwidth and a target power division ratio cannot be directly obtained, the total process of acquiring the signals of the target phase difference is complex and inconvenient, and the cost of additionally processing the phases of the signals is needed.
In the embodiment of the present invention, an operator may control a capacitance value of varactor circuit 50 to enable capacitive coupling to occur between any two adjacent evanescent-mode resonators, where any two adjacent evanescent-mode resonators of the four evanescent-mode resonators may be inductively coupled or capacitively coupled, so that an input signal is matched with the four varactor circuits 50 to output two signals with the same or opposite phases from second evanescent-mode resonator 20 and third evanescent-mode resonator 30. Wherein the phase of the two signals, and the phase difference between the two signals, can be controlled by a human operator. Therefore, the total process of acquiring signals with the same or different phases is convenient and quick, and the cost of processing the phases of additional signals is avoided.
Alternatively, each evanescent-mode resonator may output a signal, an external input signal and a connection signal terminal.
In the embodiment of the present invention, the varactor circuit 50 includes a varactor element 51, and a first patch resistor 52 connected to the varactor element 51, and the varactor circuit 50 is connected to a bias voltage source 53 through one end of the first patch resistor 52 away from the varactor element 51, where the varactor element 51 is connected to one end of two adjacent evanescent mode resonators.
Optionally, the varactor element 51 is connected to microstrips on two adjacent evanescent mode resonators.
Optionally, the varactor element 51 is a first diode 511 and a second diode 512 which are common cathodes, cathodes of the first diode 511 and the second diode 512 which are common cathodes are connected to a bias voltage source 53 through a first patch resistor 52, and two anodes of the first diode 511 and the second diode 512 which are common cathodes are respectively connected to one end of each of two adjacent evanescent mode resonators.
In the embodiment of the present invention, optionally, the first diode 511 may be a diode with labels C9, C11, C13, and C15; the second diode 512 may be a diode labeled C10, C12, C14, C16; the first chip resistor 52 may be resistors denoted by reference numerals R5, R6, R7, and R8.
Optionally, a groove is formed in the substrate 60, the substrate 60 is connected with the evanescent mode resonator through copper plating to realize capacitive load, a branch is added to the capacitive load, a through hole on the substrate is punched at the other end of the branch to be connected with the evanescent mode resonator, and a varactor diode is loaded on the other surface of the evanescent mode resonator opposite to the substrate 60, so that inter-stage inductive coupling and capacitive coupling switching and adjustment are realized.
If the varactor elements are not two diodes sharing a cathode, the filtering effect of the filter device on the input signal is easily affected when a bias voltage is input to the varactor circuit. The varactor element 51 in the embodiment of the present invention is configured as two diodes sharing a cathode, when the bias voltage 53 is input to the varactor circuit 50, the voltage at the cathode shared by the two diodes is simultaneously increased, the capacitance is increased, and due to the unidirectional conductivity of the diodes, the current does not flow to the evanescent mode resonator, so that the filtering effect of the filter apparatus 1 is not affected.
The bias voltage provided by the bias voltage source 53 is a dc bias voltage. By controlling the bias voltage provided by the bias voltage source 53 to increase, the voltage values at the cathodes of the first diode 511 and the second diode 512 increase, and the capacitances of the first diode 511 and the second diode 512 increase, so that capacitive coupling is generated between the two evanescent mode resonators.
Optionally, each diode in the embodiment of the present invention is a varactor diode with a model number of MA46H201, and each chip resistor in the embodiment of the present invention is a chip resistor with a model number of 0402 package of 100 kilo-ohms.
In the embodiment of the present invention, when a worker needs to acquire two signals with a phase difference of 180 °, capacitance values of the varactor circuits 50 between the first evanescent mode resonator 10 and the third evanescent mode resonator 30, between the first evanescent mode resonator 10 and the second evanescent mode resonator 20, and between the second evanescent mode resonator 20 and the fourth evanescent mode resonator 40 are changed, so that electric coupling is generated between the first evanescent mode resonator 10 and the third evanescent mode resonator 30, between the first evanescent mode resonator 10 and the second evanescent mode resonator 20, between the second evanescent mode resonator 20 and the fourth evanescent mode resonator 40, and magnetic coupling is generated between outputs of the third evanescent mode resonator 30 and the fourth evanescent mode resonator 40. An input signal is externally connected through the fourth evanescent mode resonator 40, the first evanescent mode resonator 10 is externally connected with a signal terminal, so that the input signal is matched with the four variable capacitance circuits 50 through the four evanescent mode resonators, and two signals with a phase difference of 180 degrees can be output from the second evanescent mode resonator 20 and the third evanescent mode resonator 30, wherein the phases of the two signals are opposite. The function of balun filtering of the annular filtering device in the embodiment of the invention is realized.
Alternatively, the capacitance values of the variable capacitance circuits 50 between the first evanescent-mode resonator 10 and the third evanescent-mode resonator 30, between the first evanescent-mode resonator 10 and the second evanescent-mode resonator 20, and between the second evanescent-mode resonator 20 and the fourth evanescent-mode resonator 40 are changed, so that the first evanescent-mode resonator 10 and the third evanescent-mode resonator 30, the first evanescent-mode resonator 10 and the second evanescent-mode resonator 20, and the second evanescent-mode resonator 20 and the fourth evanescent-mode resonator 40 are electrically coupled, and magnetic coupling is generated between the outputs of the third evanescent-mode resonator 30 and the fourth evanescent-mode resonator 40. An input signal is externally connected to the first evanescent mode resonator 10, and a signal terminal is externally connected to the fourth evanescent mode resonator, so that the input signal is matched with the four varactor circuits 50 through the four evanescent mode resonators, and two signals with a phase difference of 0 ° with the input signal can be output from the second evanescent mode resonator 20 and the third evanescent mode resonator 30, wherein the phases of the two signals are the same, so that the function of power division filtering of the annular filtering device in the embodiment of the present invention is realized.
The specific coupling coefficient relationship between two adjacent resonators is as follows: f 34 ＝-F 0 ，F 12 ＝F 13 ＝F 24 ＝F 0 In which F is 12 Is the coupling coefficient, F, between said first evanescent-mode resonator 10 and said second evanescent-mode resonator 20 34 Is the coupling coefficient between third evanescent-mode resonator 30 and fourth evanescent-mode resonator 40, F 13 Is the firstCoupling coefficient, F, between an evanescent-mode resonator 10 and a third evanescent-mode resonator 30 24 Is the coupling coefficient between the second evanescent-mode resonator 20 and the fourth evanescent-mode resonator 40, F 0 Coupling coefficient for capacitive coupling between two adjacent evanescent-mode resonators, -F 0 The coupling coefficient at which inductive coupling occurs between two adjacent evanescent-mode resonators.
Optionally, the filtering apparatus 1 in the embodiment of the present invention further includes four signal transmission circuits 70;
the first evanescent-mode resonator 10 and the fourth evanescent-mode resonator 40 are each externally connected to an input signal via one of the signal transmission circuits 70, and the signal transmission circuit 70 is configured to reduce return loss of the input signal.
Third evanescent-mode resonator 20 and third evanescent-mode resonator 30 each output a signal via one of signal transmission circuits 70, and signal transmission circuit 70 is further configured to reduce return loss of the signal output.
Optionally, the signal transmission circuit 70 includes a common-cathode third diode 71 and a common-cathode fourth diode 72, cathodes of the common-cathode third diode 71 and the common-cathode fourth diode 72 are connected to the bias voltage source 53 through a second chip resistor 73, anode ends of the common-cathode third diode 71 and the common-cathode fourth diode 72 are connected to one end of the resonator, and other anode ends of the common-cathode third diode 71 and the common-cathode fourth diode 72 output signals or are externally connected to the input signals.
In the embodiment of the invention, the evanescent mode resonator, the signal input end and the signal output end can be controlled to generate capacitive coupling between the resonator and the signal input end and the signal output end by adjusting the bias voltage provided by the bias voltage source 53, so that the coupling strength between the resonator and the signal input end and the signal output end is promoted, and the return loss of signal output is further reduced.
In the embodiment of the present invention, optionally, the third diode 71 may be diodes with labels C1, C3, C5, and C7; the fourth diode 72 may be a diode labeled C10, C12, C14, C16; the second chip resistor 73 may be resistors denoted by reference numerals R5, R6, R7, and R8.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another annular filter device according to an embodiment of the present invention. A copper foil 61 is coated on the substrate 60, and four piezoelectric actuators are mounted on the substrate 30 through the copper foil 31.
Each evanescent mode resonator is of a hollow tubular structure, one side of each evanescent mode resonator is provided with a piezoelectric actuator 80, and the piezoelectric actuator 80 and the evanescent mode resonators form a cavity structure.
Each of the piezoelectric actuators 80 is connected with one bias voltage source 53 of a plurality of bias voltage sources, so that the piezoelectric actuator 80 moves relative to the evanescent mode resonator under the action of the bias voltage applied by the bias voltage source 53, the size of the cavity structure is influenced, and the center frequency of the input signal is adjusted. Further, the frequency, bandwidth, and power ratio of the filter device 1 can be adjusted, and the bandwidth and power ratio are adjusted by the capacitance of 51.
Optionally, each evanescent mode resonator is bonded to the piezoelectric actuator 80 by a conductive silver paste.
Optionally, the piezoelectric actuator 80 in the embodiment of the present invention is a ceramic actuator.
Optionally, the piezoelectric actuator 80 in the embodiment of the present invention is a piezoelectric actuator with model number T216-A4 NO-05.
In the embodiment of the present invention, one piezoelectric actuator 80 is disposed on one side of each evanescent-mode resonator, and the piezoelectric actuator 80 and the evanescent-mode resonator form a cavity structure. Each of the piezoelectric actuators is connected to one bias voltage source 53 of a plurality of bias voltage sources, so that the piezoelectric actuator 80 moves relative to the evanescent mode resonator under the action of the bias voltage applied by the bias voltage source 53, thereby affecting the size of the cavity structure and further adjusting the center frequency of the input signal. So that the filtering device 1 has the function of flexibly adjusting the frequency, the bandwidth and the power-dividing ratio.
Optionally, the annular filter device further includes a display device; the display device is arranged on the outer side of the shell, connected with the filtering device and used for displaying the central frequency of the input signal and the central frequency of the output signal in the filtering device and displaying the phase difference between the output signals.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a third annular filter device according to an embodiment of the present invention. Through design, simulation and optimization, the specific dimensions of the filter formed by the filtering device 1 in the embodiment of the present invention are finally determined as follows:
the shorter side length L1 of the substrate 60 is 45.1 mm, the longer side length L2 of the substrate 60 is 46.1mm, the height H1 of the substrate 60 is 1.524 mm, the diameter D1 of the resonator cavity is 12 mm, the height H2 of the resonator cavity is 20 microns, the diameter D2 of the capacitive load in the resonator is 4mm, and the length L3 of the coplanar waveguide in the resonator is 2.56 microns.
Please refer to fig. 4 to fig. 9. Fig. 4 to fig. 9 respectively show the S parameter of the filter apparatus 1 and the test result of the phase imbalance degree of the output signal when the varactor diode is at different capacitance values and the piezoelectric actuators 80 are at different bias voltages by changing the bias voltage provided by the bias voltage source 53 according to the embodiment of the present invention, and the test result indicates that the design concept of the present invention is correct and feasible, where fig. 8a and fig. 8b are parameter test graphs when the first evanescent mode resonator 10 and the fourth evanescent mode resonator 40 input signals when bandwidth is different; fig. 9a and 9b are parameter test charts of input signals of the first evanescent-mode resonator 10 and the fourth evanescent-mode resonator 40 at different power ratios.
In summary, the embodiment of the invention provides a ring filter device, which includes a housing, a filter device, a plurality of bias voltage sources, and a first adjusting device, wherein the filter device and the plurality of bias voltage sources are disposed inside the housing, the first adjusting device is disposed outside the housing,
the filtering device is connected with a plurality of bias voltage sources, and the first adjusting device is connected with the plurality of bias voltage sources and is used for adjusting the bias voltages of the bias voltage sources, so that the filtering device carries out filtering processing on input signals under the action of the bias voltages applied by the plurality of bias voltage sources and outputs two signals with the same or opposite phases. So that the non-skilled worker can directly adjust the plurality of bias voltage sources by adjusting the first adjusting device under the condition that the skilled worker does not know the technology in the field, so that the filtering processing of the input signal by the filtering device achieves the target effect.
Furthermore, the filtering device comprises a first evanescent mode resonator, a second evanescent mode resonator, a third evanescent mode resonator, a fourth evanescent mode resonator and four variable capacitance circuits; the first evanescent mode resonator, the second evanescent mode resonator, the third evanescent mode resonator and the fourth evanescent mode resonator are distributed in a ring shape, two adjacent evanescent mode resonators are connected through one varactor circuit, each varactor circuit is connected with one bias voltage source in the plurality of bias voltage sources to receive bias voltage applied by the bias voltage source, the first evanescent mode resonator and the fourth evanescent mode resonator are externally connected with input signals, and the four varactor circuits are matched with the four resonators to filter the input signals mutually under the action of the bias voltages applied by the plurality of bias voltage sources, so that two signals with the same or opposite phases are output at the second evanescent mode resonator and the third evanescent mode resonator. The filter device has low energy loss, simple structure and easy processing and realization, and accords with the mainstream trend of miniaturization, integration and low energy consumption of the current circuit. And the two signals of the target phase difference can be conveniently and quickly acquired, and the cost of extra signal phase processing is avoided.
Furthermore, each evanescent mode resonator is of a hollow tubular structure, one side of each evanescent mode resonator is provided with a piezoelectric actuator, and the piezoelectric actuator and the evanescent mode resonators form a cavity structure; each piezoelectric actuator is externally connected with a bias voltage, so that under the action of the bias voltage, the piezoelectric actuators move towards the evanescent mode resonator to influence the size of the cavity structure, and further the central frequency of the input signal is adjusted.
Further, the filtering device further comprises four signal transmission circuits; the other ends of the first evanescent mode resonator and the fourth evanescent mode resonator are externally connected with input signals through the signal transmission circuit respectively, and the signal transmission circuit is used for reducing return loss of signal input. And the second evanescent mode resonator and the third evanescent mode resonator output signals through one signal transmission circuit respectively, and the signal transmission circuit is further used for reducing return loss of signal output. The evanescent mode resonator is controlled to generate capacitive coupling with the signal input end and the signal output end by adjusting the bias voltage between the evanescent mode resonator and the signal transmission circuit, so that the coupling strength between the evanescent mode resonator and the signal input end and the signal output end is promoted, and the return loss of signal input or output is further reduced.
The above-described embodiments are merely preferred embodiments, which are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A reconfigurable ring filter device, comprising a housing, a filter device, a plurality of bias voltage sources, and a first tuning device, the filter device and the plurality of bias voltage sources being disposed inside the housing, the first tuning device being disposed outside the housing,
the filtering device is connected with a plurality of bias voltage sources, and the first adjusting device is connected with the plurality of bias voltage sources and is used for adjusting the bias voltages of the bias voltage sources, so that the filtering device carries out filtering processing on input signals under the action of the bias voltages applied by the plurality of bias voltage sources and outputs two signals with the same or opposite phases;
the filtering device comprises a plurality of evanescent mode resonators, each evanescent mode resonator is of a hollow tubular structure, one side of each evanescent mode resonator is provided with a piezoelectric actuator, and the piezoelectric actuators and the evanescent mode resonators form a cavity structure;
each of the piezoelectric actuators is connected to one of the plurality of bias voltage sources.
2. A ring filter arrangement as claimed in claim 1, characterized in that the filter arrangement comprises a first evanescent mode resonator, a second evanescent mode resonator, a third evanescent mode resonator, a fourth evanescent mode resonator, and four varactor circuits;
the first evanescent mode resonator, the second evanescent mode resonator, the third evanescent mode resonator and the fourth evanescent mode resonator are distributed in a ring shape, two adjacent evanescent mode resonators are connected through one varactor circuit, each varactor circuit is connected with one bias voltage source in the plurality of bias voltage sources to receive bias voltages applied by the bias voltage sources,
the first evanescent mode resonator and the fourth evanescent mode resonator are externally connected with input signals, and the four variable capacitance circuits are matched with the four resonators to filter the input signals under the action of bias voltages applied by a plurality of bias voltage sources, so that two signals with the same or opposite phases are output at the second evanescent mode resonator and the third evanescent mode resonator.
3. The ring filter device according to claim 2, characterized in that the varactor circuit comprises a varactor element and a first patch resistor connected with the varactor element, and the varactor circuit is connected with a bias voltage source through one end of the first patch resistor far away from the varactor element, wherein the varactor element is connected with one end of two adjacent evanescent mode resonators.
4. The ring filter device according to claim 3, wherein the varactor elements are a first diode and a second diode which are connected in a cathode-sharing manner, cathodes of the first diode and the second diode are connected with a bias voltage source through a chip resistor, and two anodes of the first diode and the second diode of the cathode-sharing manner are respectively connected with one end of each of two adjacent evanescent mode resonators.
5. A loop filter arrangement as claimed in claim 2, characterized in that the filter arrangement further comprises four signal transmission circuits;
the other ends of the first evanescent mode resonator and the fourth evanescent mode resonator are respectively externally connected with input signals through the signal transmission circuit, and the signal transmission circuit is used for reducing return loss of signal input.
6. The loop filter arrangement of claim 5, wherein the second evanescent mode resonator and the third evanescent mode resonator each output a signal via one of the signal transmission circuits, the signal transmission circuit further configured to reduce return loss of the signal output.
7. The loop filter device according to any one of claims 5 and 6, wherein the signal transmission circuit comprises a common-cathode third diode and a common-cathode fourth diode, cathodes of the common-cathode third diode and the common-cathode fourth diode are connected with a bias voltage source through a second chip resistor, one ends of anodes of the common-cathode third diode and the common-cathode fourth diode are connected with one end of the evanescent mode resonator, and the other ends of the anodes of the common-cathode third diode and the common-cathode fourth diode output signals or are externally connected with the input signals.
8. A loop filter arrangement as claimed in claim 1, further comprising a display device;
the display device is arranged on the outer side of the shell, connected with the filtering device and used for displaying the central frequency of the input signal and the central frequency of the output signal in the filtering device and displaying the phase difference between the output signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910716594.9A CN110504945B (en) | 2019-08-05 | 2019-08-05 | Reconfigurable annular filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910716594.9A CN110504945B (en) | 2019-08-05 | 2019-08-05 | Reconfigurable annular filtering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110504945A CN110504945A (en) | 2019-11-26 |
| CN110504945B true CN110504945B (en) | 2022-12-02 |
Family
ID=68588023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910716594.9A Active CN110504945B (en) | 2019-08-05 | 2019-08-05 | Reconfigurable annular filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110504945B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146548A (en) * | 2019-12-30 | 2020-05-12 | 电子科技大学 | Reconfigurable gap bridge filter network based on SIW evanescent mode resonator |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621329A (en) * | 2008-07-03 | 2010-01-06 | 华为技术有限公司 | Method and system for measuring bias points of double-parallel modulator |
| CN103199325A (en) * | 2013-03-09 | 2013-07-10 | 西安电子科技大学 | Band gap reconfigurable micro-band ultra wide band filter |
| WO2013159010A1 (en) * | 2012-04-19 | 2013-10-24 | Qualcomm Mems Technologies, Inc. | Two- and three-substrate level processes for producing evanescent-mode electromagnetic-wave cavity resonators |
| CN105514549A (en) * | 2014-09-23 | 2016-04-20 | 南京理工大学 | Miniature triple-band band-pass filter based on embedded quarter-wavelength resonators |
| CN105870553A (en) * | 2016-05-23 | 2016-08-17 | 西安电子科技大学 | Reconfigurable substrate integrated waveguide bandpass filter and reconfigurable method of filter |
| CN107123844A (en) * | 2017-04-06 | 2017-09-01 | 江南大学 | A kind of electric tunable electro-magnetic bandgap wave filter of miniature restructural |
| CN107646174A (en) * | 2015-05-20 | 2018-01-30 | 菲尼萨公司 | Method and apparatus for the network of hardware configuration |
| CN108847516A (en) * | 2018-08-01 | 2018-11-20 | 江苏贝孚德通讯科技股份有限公司 | A kind of evaporative pattern waveguide high-pass filter |
| CN109150129A (en) * | 2018-07-24 | 2019-01-04 | 电子科技大学 | A kind of band logical/band resistance frequency response reconfigurable filter |
| CN109449547A (en) * | 2018-10-30 | 2019-03-08 | 成都频岢微电子有限公司 | Restructural balun filter based on half-wave resonator |
| CN109473756A (en) * | 2018-11-16 | 2019-03-15 | 西安电子科技大学 | A kind of complete restructural difference filter |
| CN109961997A (en) * | 2017-12-22 | 2019-07-02 | 中微半导体设备(上海)股份有限公司 | Plasma processing apparatus and its DC offset voltage control method |
| CN110011015A (en) * | 2019-03-01 | 2019-07-12 | 电子科技大学 | A kind of frequency and bandwidth reconfigurable microwave triplexer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8933594B2 (en) * | 2008-09-27 | 2015-01-13 | Witricity Corporation | Wireless energy transfer for vehicles |
| US10122478B2 (en) * | 2015-02-27 | 2018-11-06 | Purdue Research Foundation | Methods and devices for real-time monitoring of tunable filters |
-
2019
- 2019-08-05 CN CN201910716594.9A patent/CN110504945B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621329A (en) * | 2008-07-03 | 2010-01-06 | 华为技术有限公司 | Method and system for measuring bias points of double-parallel modulator |
| WO2013159010A1 (en) * | 2012-04-19 | 2013-10-24 | Qualcomm Mems Technologies, Inc. | Two- and three-substrate level processes for producing evanescent-mode electromagnetic-wave cavity resonators |
| CN103199325A (en) * | 2013-03-09 | 2013-07-10 | 西安电子科技大学 | Band gap reconfigurable micro-band ultra wide band filter |
| CN105514549A (en) * | 2014-09-23 | 2016-04-20 | 南京理工大学 | Miniature triple-band band-pass filter based on embedded quarter-wavelength resonators |
| CN107646174A (en) * | 2015-05-20 | 2018-01-30 | 菲尼萨公司 | Method and apparatus for the network of hardware configuration |
| CN105870553A (en) * | 2016-05-23 | 2016-08-17 | 西安电子科技大学 | Reconfigurable substrate integrated waveguide bandpass filter and reconfigurable method of filter |
| CN107123844A (en) * | 2017-04-06 | 2017-09-01 | 江南大学 | A kind of electric tunable electro-magnetic bandgap wave filter of miniature restructural |
| CN109961997A (en) * | 2017-12-22 | 2019-07-02 | 中微半导体设备(上海)股份有限公司 | Plasma processing apparatus and its DC offset voltage control method |
| CN109150129A (en) * | 2018-07-24 | 2019-01-04 | 电子科技大学 | A kind of band logical/band resistance frequency response reconfigurable filter |
| CN108847516A (en) * | 2018-08-01 | 2018-11-20 | 江苏贝孚德通讯科技股份有限公司 | A kind of evaporative pattern waveguide high-pass filter |
| CN109449547A (en) * | 2018-10-30 | 2019-03-08 | 成都频岢微电子有限公司 | Restructural balun filter based on half-wave resonator |
| CN109473756A (en) * | 2018-11-16 | 2019-03-15 | 西安电子科技大学 | A kind of complete restructural difference filter |
| CN110011015A (en) * | 2019-03-01 | 2019-07-12 | 电子科技大学 | A kind of frequency and bandwidth reconfigurable microwave triplexer |
Non-Patent Citations (2)
| Title |
|---|
| Lowering the energy consumption in silicon photonic devices and systems [Invited];Zhiping Zhou等;《Photonics Research》;20151001(第05期);151-157 * |
| 可重构射频滤波器发展现状与趋势;黄晓国等;《通信对抗》;20170315(第01期);322-328 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110504945A (en) | 2019-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110492865B (en) | Mixed filter network | |
| CN110504945B (en) | Reconfigurable annular filtering device | |
| CN110444844B (en) | Single-channel and multi-channel reconfigurable filter circuit | |
| CN103280621A (en) | Five-quintiles power divider | |
| CN111146548A (en) | Reconfigurable gap bridge filter network based on SIW evanescent mode resonator | |
| CN110061333B (en) | Microwave electrically tunable band-stop filter with high suppression degree and wide tuning range | |
| CN109525129B (en) | Rectifier circuit based on cooperative network and design method | |
| KR20020092815A (en) | Filter component and communication apparatus | |
| CN105164850B (en) | Directional coupler | |
| CN106207335A (en) | A kind of adjustable reconfigurable band filter | |
| CN110445471B (en) | Dual-band reconfigurable radio frequency power amplifier and control method thereof | |
| CN110994102B (en) | Power divider with reconfigurable distribution path number and distribution ratio | |
| CN105789785A (en) | Center frequency and bandwidth adjustable substrate integrated waveguide filter | |
| CN110289830B (en) | Branch filter network | |
| CN103152003B (en) | Ultra wide band electrically tunable band-pass filter group and control method for frequency thereof | |
| CN112216939A (en) | Filter device and method for realizing filtering power division and duplexer functions | |
| KR102200380B1 (en) | Compact low loss millimeter-wave power divider and combiner device | |
| WO2020134419A1 (en) | Continuously adjustable analog phase shifter | |
| CN110518892B (en) | Orthogonal filter device | |
| CN214380821U (en) | Phase shift circuit for Ka-band radio frequency chip | |
| CN210274005U (en) | V-frequency-band miniaturized low-power-consumption high-power digital phase-shifting network | |
| CN110365304B (en) | Branch filter | |
| CN210469235U (en) | Dual-band reconfigurable radio frequency power amplifier | |
| Wang et al. | Design of frequency/passband adjustable filtering power divider based on liquid metal | |
| De et al. | Tunable SIW band pass filters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |