CN109599648A - The adjustable multifunctional filter of centre frequency and bandwidth based on mini strip line resonator - Google Patents
The adjustable multifunctional filter of centre frequency and bandwidth based on mini strip line resonator Download PDFInfo
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- CN109599648A CN109599648A CN201811275954.8A CN201811275954A CN109599648A CN 109599648 A CN109599648 A CN 109599648A CN 201811275954 A CN201811275954 A CN 201811275954A CN 109599648 A CN109599648 A CN 109599648A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/08—Strip line resonators
- H01P7/088—Tunable resonators
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Abstract
The invention discloses a kind of centre frequencies based on mini strip line resonator and the adjustable multifunctional filter of bandwidth, including the first electric impedance resonator, second electric impedance resonator, third electric impedance resonator, varactor D1, varactor D2, varactor D3, varactor D4, varactor D5, varactor D6, varactor D7, varactor D8, varactor D9, varactor D10, varactor D11, varactor D12, varactor D13, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, capacitor C1, capacitor C2 and capacitor C3.The spacing of first low-impedance strips of the first low-impedance strips and the second electric impedance resonator is 2mm, and the spacing of the first low-impedance strips of the first low-impedance strips and third electric impedance resonator of the second electric impedance resonator is 1.2mm.
Description
Technical field
The present invention relates to field of wireless communications systems, and centre frequency and the bandwidth for being based especially on mini strip line resonator are adjustable
Multifunctional filter.
Background technique
With the fast development of modern wireless communication systems, frequency spectrum resource growing tension, more and more environment are required
Electronic equipment used in it has tunable, multi-functional feature, to improve the utilization rate of frequency spectrum resource.Wherein, balun is filtered
Wave device is a kind of independent microwave passive component, by means of the jamproof principle of balancing circuitry in signal system, while balun
Filter also has many advantages, such as low cost, high integration, miniaturization, and therefore, balun filter becomes exploitation electromagnetism interference
One of key of radar communications system.In addition, power divider is also the important devices of radio-frequency front-end, often answered with filter
In the circuit of radio-frequency front-end, the function of filtering and power distribution is realized by cascade mode, in this way can
Making system, volume is relatively large, and the insertion loss of simultaneity factor also can be bigger.Power splitter and filter pass through integrated
Mode realizes the function of filtering and power distribution, thus can reduction system overall volume, while can also improve the whole of system
Body loss.Currently, the adjustable extent of existing balun filter is lower, and it is not directed to centre frequency and opposite band on the market
Wide controllable balun filter.In addition, being there is no on the market about balun filter and power splitter filter in no adjunct circuit
In the case where the Research Literature mutually converted.
Such as application No. is " 201410210133.1 ", it is entitled " bandwidth and working frequency it is individually controllable multilayer bimodulus it is double
The Chinese patent of passband balun filter " comprising the first microwave dielectric substrate, the second microwave dielectric substrate, the first microwave are situated between
The one side of matter substrate towards the second microwave dielectric substrate is equipped with as the first metal layer publicly, and the first metal layer is equipped with two
Item is orthogonal and unequal first gap of length, the one side far from the second microwave dielectric substrate of the first microwave dielectric substrate are equipped with
First patch resonator, the first patch resonator are provided with that two orthogonal and unequal second gap of length, the first patch are humorous
The device that shakes is equipped with an input terminal, and the one side far from the first microwave dielectric substrate of the second microwave dielectric substrate is equipped with the second patch resonant
Device, the second patch resonator be equipped with that two orthogonal and length third gap not etc. and the second patch resonator with it is defeated
Enter the both ends rectified and handed over to set there are two output end.The patent can be controlled respectively by the length in two the first gaps of control respectively
The bandwidth for making corresponding passband can be controlled separately corresponding passband by the length in two the second gaps of control and third gap
Centre frequency, realize two pass band widths of independent control and centre frequency using novel topological structure.But the patent
There is also following shortcomings: first, load varactor is more, increases the insertion loss of circuit and using difficulty.The
Two, centre frequency adjustable range is about 26%, still there is further room for promotion.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of centre frequency and bandwidth based on mini strip line resonator
Adjustable multifunctional filter, The technical solution adopted by the invention is as follows:
The adjustable multifunctional filter of centre frequency and bandwidth based on mini strip line resonator:
Including be covered on medium substrate and in the first electric impedance resonator of Γ type structure, the second electric impedance resonator and
Third electric impedance resonator, varactor D1, the varactor that anode uses microstrip line to connect with the first electric impedance resonator
D7 and varactor D10, varactor D12 that anode is connect with the second electric impedance resonator using microstrip line, transfiguration two
Pole pipe D11, varactor D8 and varactor D3, the transfiguration that anode uses microstrip line to connect with third electric impedance resonator
Diode D5, varactor D9 and varactor D13, the capacitor C1 that one end is connect with the cathode of varactor D7, with
The cathode of the second port Port2 of the other end connection of capacitor C1, cathode and varactor D1 connect and the transfiguration of plus earth
Diode D2, the capacitor C2 that one end is connect with the cathode of varactor D8, the first port being connect with the other end of capacitor C2
The cathode of Port1, cathode and varactor D3 connect and the varactor D4 of plus earth, one end and varactor D9
Cathode connection capacitor C3, the third port Port3 being connect with the other end of capacitor C3, the yin of cathode and varactor D5
Pole connect and plus earth varactor D6, and with first port Port1, second port Port2 and third port
The sub-miniature A connector that Port3 connects one to one.First electric impedance resonator and the second electric impedance resonator relative position are laid, and
It lays second electric impedance resonator position opposite with third electric impedance resonator.Wherein, the medium substrate with a thickness of 25mil, and
Relative dielectric constant is 10.2.
First electric impedance resonator, the second electric impedance resonator are identical with the structure of third electric impedance resonator, include one
Body formed the first low-impedance strips and the second low-impedance strips, the side edge of first low-impedance strips and the side of the second low-impedance strips
Edge is total to side and collectively forms Γ type structure by the first low-impedance strips and the second low-impedance strips.
The length l of first low-impedance strips1For 8mm, width w1For 4mm, and the length l of second low-impedance strips2For
20mm, width w2For 1.18mm.
The spacing of first low-impedance strips of the first low-impedance strips and the second electric impedance resonator of first electric impedance resonator
s1For 2mm, the distance s of the first low-impedance strips of the first low-impedance strips and third electric impedance resonator of the second electric impedance resonator2For
1.2mm。
The varactor D10, varactor D11, varactor D13, varactor D1, varactor
D7, varactor D3, varactor D8, varactor D5 and varactor D9 cathode with reverse bias power supply
Connection.
Further, the multifunctional filter further includes the first low-impedance strips company of one end and the first electric impedance resonator
Connect and the other end ground connection resistance R9, one end connect with the first low-impedance strips of the second electric impedance resonator and the other end be grounded
Resistance R10 and one end are connect with the first low-impedance strips of third electric impedance resonator and the resistance R11 of other end ground connection.
Further, the multifunctional filter, further include one end respectively with varactor D10 and varactor
The resistance R7 that the cathode of D11 connects and the other end is connect with reverse bias power supply, one end respectively with varactor D12 and change
The resistance R8 that the cathode for holding diode D13 connects and the other end is connect with reverse bias power supply, is connected to varactor D1's
Resistance R2 between cathode and reverse bias power supply, the electricity being connected between the cathode of varactor D7 and reverse bias power supply
R1 is hindered, the resistance R3 being connected between the cathode of varactor D8 and reverse bias power supply is connected to varactor D3's
Resistance R4 between cathode and reverse bias power supply, the electricity being connected between the cathode of varactor D9 and reverse bias power supply
Hinder R6, and the resistance R5 being connected between the cathode of varactor D5 and reverse bias power supply.
Preferably, the varactor D1 is connected to the bottom center of the first low-impedance strips of the first electric impedance resonator,
And varactor D7 is connected to the distance d of the first low-impedance strips bottom away from the first electric impedance resonator1At 0.68mm.It is described
Varactor D5 is connected to the bottom center of the first low-impedance strips of third electric impedance resonator, and varactor D9 is connected to
The distance d of the first low-impedance strips bottom away from third electric impedance resonator1At 0.68mm.The varactor D3 is connected to
The bottom center of first low-impedance strips of two electric impedance resonators, and varactor D8 is connected to away from the second electric impedance resonator
The distance d of one low-impedance strips bottom2At 1.38mm.
Preferably, the resistance R9 is connected to the bottom margin of the first low-impedance strips of the first electric impedance resonator and with
First low-impedance strips of one electric impedance resonator and the total side of the second low-impedance strips are opposite；The resistance R10 is connected to the second impedance
The bottom margin of first low-impedance strips of resonator and the first low-impedance strips and the second low-impedance strips with the second electric impedance resonator
Total side it is opposite；The resistance R11 is connected to the bottom margin of the first low-impedance strips of third electric impedance resonator and hinders with third
First low-impedance strips of antiresonance device and the total side of the second low-impedance strips are opposite.
Compared with prior art, the invention has the following advantages:
(1) the first electric impedance resonator in the present invention and third electric impedance resonator share the second electric impedance resonator, and divide
Do not transmit signal by way of field coupling and magnetic field coupling, make two-way phase of output signal respectively in advance with lag 90 °, from
What forms the output of balun signal.
(2) present invention is changed into magnetic field coupling by the capacitor between the second electric impedance resonator and third electric impedance resonator
Field coupling is changed into power splitter by balun to realize that phase is consistent.
(3) present invention makes field coupling by capacitance size between the second electric impedance resonator and third electric impedance resonator
It cancels out each other with magnetic field coupling itself, to realize two port filter device.
(4) present invention is by the adjusting to capacitance size between input/output port and electric impedance resonator, resonator with
The adjusting of capacitance size and the concatenated ground capacity of quarter-wave resonance device high impedance micro-strip line end between resonator
It is worth the adjusting of size, so that external sort factor is controlled, electromagnetic coupling coefficient and resonator electrical length, to reach realization pair
Mutual conversion between centre frequency, the adjusting of bandwidth and balun filter, function filter-divider and two port filter device.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to the attached drawing used required in embodiment
It is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as to protection
The restriction of range to those skilled in the art without creative efforts, can also be attached according to these
Figure obtains other relevant attached drawings.
Fig. 1 is that the present invention is used as structure size schematic diagram.
Fig. 2 is that the present invention is used as pictorial diagram.
Fig. 3 is S11 parameters simulation figure of the present invention as balun filter.
Fig. 4 is S21 parameters simulation figure of the present invention as balun filter.
Fig. 5 is S31 parameters simulation figure of the present invention as balun filter.
Fig. 6 is that the bandwidth adjustment that the present invention is 1.1GHz as the centre frequency of balun filter tests S11 parameters simulation
Figure.
Fig. 7 is that the bandwidth adjustment that the present invention is 1.1GHz as the centre frequency of balun filter tests S21 parameters simulation
Figure.
Fig. 8 is that the bandwidth adjustment that the present invention is 1.1GHz as the centre frequency of balun filter tests S31 parameters simulation
Figure.
Fig. 9 is that the bandwidth adjustment that the present invention is 1.22GHz as the centre frequency of balun filter tests S11 parameters simulation
Figure.
Figure 10 is that the bandwidth adjustment test S21 parameter that the present invention is 1.22GHz as the centre frequency of balun filter is imitated
True figure.
Figure 11 is that the bandwidth adjustment test S31 parameter that the present invention is 1.22GHz as the centre frequency of balun filter is imitated
True figure.
Figure 12 is signal output port amplitude and phase unbalance degree test chart (one) of the present invention as balun filter.
Figure 13 is signal output port amplitude and phase unbalance degree test chart (two) of the present invention as balun filter.
Figure 14 is S11 parameters simulation figure of the present invention as function filter-divider.
Figure 15 is S21 parameters simulation figure of the present invention as function filter-divider.
Figure 16 is S31 parameters simulation figure of the present invention as function filter-divider.
Figure 17 is that the bandwidth adjustment that the present invention is 1.1GHz as the centre frequency of function filter-divider tests S11 parameters simulation
Figure.
Figure 18 is that the bandwidth adjustment that the present invention is 1.1GHz as the centre frequency of function filter-divider tests S31 parameters simulation
Figure.
Figure 19 is that the bandwidth adjustment that the present invention is 1.2GHz as the centre frequency of function filter-divider tests S11 parameters simulation
Figure.
Figure 20 is that the bandwidth adjustment that the present invention is 1.2GHz as the centre frequency of function filter-divider tests S31 parameters simulation
Figure.
Figure 21 is signal output port amplitude and phase unbalance degree test chart (one) of the present invention as function filter-divider.
Figure 22 is signal output port amplitude and phase unbalance degree test chart (two) of the present invention as function filter-divider.
Figure 23 is S11 parameters simulation figure of the present invention as dual-port reconfigurable filter.
Figure 24 is S21 parameters simulation figure of the present invention as dual-port reconfigurable filter.
Figure 25 is S31 parameters simulation figure of the present invention as dual-port reconfigurable filter.
Figure 26 is the bandwidth adjustment test that the present invention is 1.06GHz as the centre frequency of dual-port reconfigurable filter
S11 parameters simulation figure.
Figure 27 is the bandwidth adjustment test that the present invention is 1.06GHz as the centre frequency of dual-port reconfigurable filter
S21 parameters simulation figure.
Figure 28 is the bandwidth adjustment test that the present invention is 1.06GHz as the centre frequency of dual-port reconfigurable filter
S31 parameters simulation figure.
Figure 29 is the bandwidth adjustment test that the present invention is 1.16GHz as the centre frequency of dual-port reconfigurable filter
S11 parameters simulation figure.
Figure 30 is the bandwidth adjustment test that the present invention is 1.16GHz as the centre frequency of dual-port reconfigurable filter
S21 parameters simulation figure.
Figure 31 is the bandwidth adjustment test that the present invention is 1.16GHz as the centre frequency of dual-port reconfigurable filter
S31 parameters simulation figure.
In above-mentioned attached drawing, the corresponding component names of appended drawing reference are as follows:
The first low-impedance strips of 1-, the second low-impedance strips of 2-.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application apparent, with reference to the accompanying drawings and examples to the present invention
It is described further, embodiments of the present invention include but is not limited to the following example.Based on the embodiment in the application, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to the application
The range of protection.
Embodiment
As shown in Figure 1 to Figure 2, it present embodiments provides a kind of centre frequency based on mini strip line resonator and bandwidth is adjustable
Multifunctional filter, which includes balun filter, function filter-divider and dual-port reconfigurable filter.Its
In, medium substrate in the present embodiment with a thickness of 25mil, and relative dielectric constant is 10.2, in addition, varactor is selected
SMV123 series.It should be noted that the serial numbers term such as " first " described in the present embodiment, " second " be only used for distinguishing it is similar
Component cannot be understood as the specific restriction to protection scope.In addition, " bottom " described in the present embodiment, " top ", " edge "
Etc. directionalities term be illustrated based on the drawings.
Specifically, which includes the first impedance for being covered on medium substrate and be in Γ type structure
Resonator, the second electric impedance resonator and third electric impedance resonator, what anode was connect with the first electric impedance resonator using microstrip line
Varactor D1, varactor D7 and varactor D10, anode are connect with the second electric impedance resonator using microstrip line
Varactor D12, varactor D11, varactor D8 and varactor D3, anode with third impedance resonance
Device uses varactor D5, varactor D9 and the varactor D13 of microstrip line connection, one end and varactor D7
Cathode connection capacitor C1, the second port Port2 being connect with the other end of capacitor C1, the yin of cathode and varactor D1
Pole connects and varactor D2, the capacitor C2 that one end is connect with the cathode of varactor D8 of plus earth, with capacitor C2's
The cathode of the first port Port1 of other end connection, cathode and varactor D3 connect and the varactor of plus earth
D4, the capacitor C3 that one end is connect with the cathode of varactor D9, the third port Port3 being connect with the other end of capacitor C3,
The cathode of cathode and varactor D5 connect and the varactor D6 of plus earth, with first port Port1, second port
The sub-miniature A connector that Port2 and third port Port3 connect one to one, first low-impedance strips of one end and the first electric impedance resonator
The resistance R9 of connection and other end ground connection, one end is connect with the first low-impedance strips of the second electric impedance resonator and the other end is grounded
Resistance R10, one end is connect with the first low-impedance strips of third electric impedance resonator and the resistance R11 of other end ground connection, one end point
It is not connect with the cathode of varactor D10 and varactor D11 and resistance that the other end is connect with reverse bias power supply
R7, one end is connect with the cathode of varactor D12 and varactor D13 respectively and the other end and reverse bias power supply connect
The resistance R8 connect, the resistance R2 being connected between the cathode of varactor D1 and reverse bias power supply are connected to two pole of transfiguration
Resistance R1 between the cathode and reverse bias power supply of pipe D7, be connected to varactor D8 cathode and reverse bias power supply it
Between resistance R3, the resistance R4 being connected between the cathode of varactor D3 and reverse bias power supply is connected to two pole of transfiguration
Resistance R6 between the cathode and reverse bias power supply of pipe D9, and it is connected to the cathode and reverse bias electricity of varactor D5
Resistance R5 between source.Wherein, varactor D10, varactor D11, varactor D13, varactor D1, change
Hold diode D7, varactor D3, varactor D8, varactor D5 and varactor D9 cathode and reversely
Bias supply connection.In addition, the resistance value of resistance R1 to resistance R11 are 100k Ω, capacitor C1 to capacitor C3 is 8pF.
In the present embodiment, first electric impedance resonator and the second electric impedance resonator relative position are laid, and the second impedance
It lays resonator position opposite with third electric impedance resonator.First electric impedance resonator, the second electric impedance resonator and third resistance
The structure of antiresonance device is identical, includes integrally formed first low-impedance strips 1 and the second low-impedance strips 2, first low-resistance
The side edge of anti-band and the side edge of the second low-impedance strips are total to side and are collectively formed by the first low-impedance strips and the second low-impedance strips
Γ type structure.Wherein, resistance R9 be connected to the first low-impedance strips of the first electric impedance resonator bottom margin and with the first impedance
First low-impedance strips of resonator and the total side of the second low-impedance strips are opposite.And the resistance R10 is connected to the second impedance resonance
The bottom margin of first low-impedance strips of device and with the first low-impedance strips of the second electric impedance resonator and being total to for the second low-impedance strips
Side is opposite；At the same time, resistance R11 is connected to the bottom margin and and third of the first low-impedance strips of third electric impedance resonator
First low-impedance strips of electric impedance resonator and the total side of the second low-impedance strips are opposite.
In the present embodiment, the length l of the first low-impedance strips1For 8mm, width w1For 4mm, and second low-impedance strips
Length l2For 20mm, width w2For 1.18mm.The first low-impedance strips and the second electric impedance resonator of first electric impedance resonator
The first low-impedance strips distance s1For 2mm, the of the first low-impedance strips of the second electric impedance resonator and third electric impedance resonator
The distance s of one low-impedance strips2For 1.2mm.Varactor D1 is connected to the bottom of the first low-impedance strips of the first electric impedance resonator
Portion center, and varactor D7 is connected to the distance d of the first low-impedance strips bottom away from the first electric impedance resonator1For 0.68mm
Place.The varactor D5 is connected to the bottom center of the first low-impedance strips of third electric impedance resonator, and varactor
D9 is connected to the distance d of the first low-impedance strips bottom away from third electric impedance resonator1At 0.68mm.The varactor D3
Be connected to the bottom center of the first low-impedance strips of the second electric impedance resonator, and varactor D8 be connected to it is humorous away from the second impedance
The distance d of first low-impedance strips bottom of vibration device2At 1.38mm.Through applicant's validation trial, when the second impedance resonance
The distance s of first low-impedance strips of the first low-impedance strips and third electric impedance resonator of device2When for 1.2mm, it is just able to achieve three kinds
Filter function switching.
In order to verify the parameter characteristic of multiple functions filter, spy carries out centre frequency and adjusts emulation testing, the survey of S11 parameter
Examination, S21 parameter testing and signal output port amplitude and phase unbalance degree are tested.As shown in Fig. 3 to Figure 13, the present embodiment is made
For the use of balun filter, the modeling and simulating in electromagnetic simulation software HFSS.15, and to have carried out perfect in kind processing survey
Examination.As can be seen that the balun filter centre frequency adjustable range covers 1.0-1.32GHz, 1-dB bandwidth in from Fig. 3 to Figure 11
Adjustable range is about 30-60MHz, and return loss is better than -10dB in passband.As can be seen that balun filter in from Figure 11 to Figure 12
Two Differential Output port 1dB amplitude of bandwidth differences in wave device passband are within 0.4dB.Meanwhile in the balun filter passband
Two Differential Output port 1dB bandwidth phase differences within 1.3 °, illustrate that two balance ports, 180 ° of reverse phases are functional.
In addition, this implementation also can be used as function filter-divider use, performance parameter test curve as shown in Figure 14 to Figure 22,
As can be seen that the function filter-divider centre frequency adjustable range covers 0.96-1.27GHz, 1-dB bandwidth in from Figure 14 to Figure 20
Adjustable range is about 30-110MHz, and return loss is better than -10dB in passband.And from Figure 21 to Figure 22 in as can be seen that the function point
Two output port 1dB amplitude of bandwidth differences in filter passband are within 0.5dB.Meanwhile in the function filter-divider passband
For two output port 1dB bandwidth phase differences within 1.5 °, the good equal function of display divide performance.
Moreover, the present embodiment is also used as the use of dual-port reconfigurable filter, performance parameter test curve
As shown in Figure 23 to Figure 31, from Figure 23 to Figure 25 in as can be seen that the dual-port reconfigurable filter regulable center frequency range
For 1-1.28GHz, return loss is better than -10dB in passband, and the power degree of suppression of one of port is better than -30dB, embodies
Good dual-port reconfigurable filter performance.And from Figure 26 to Figure 31 in as can be seen that dual-port reconfigurable filter 1-
DB bandwidth adjustment range is about 70-130MHz, it is shown that good bandwidth control performance.
Above-described embodiment is merely a preferred embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, as long as using
Design principle of the invention, and the non-creative variation worked and made is carried out on this basis, it should belong to of the invention
Within protection scope.
Claims (5)
1. the adjustable multifunctional filter of centre frequency and bandwidth based on mini strip line resonator, it is characterised in that:
The first electric impedance resonator, the second electric impedance resonator and third including being covered on medium substrate and being in Γ type structure
Electric impedance resonator, varactor D1, varactor D7 that anode is connect with the first electric impedance resonator using microstrip line and
Varactor D10, varactor D12, the varactor that anode uses microstrip line to connect with the second electric impedance resonator
D11, varactor D8 and varactor D3, two pole of transfiguration that anode uses microstrip line to connect with third electric impedance resonator
Pipe D5, varactor D9 and varactor D13, the capacitor C1 that one end is connect with the cathode of varactor D7, with capacitor
The cathode of the second port Port2 of the other end connection of C1, cathode and varactor D1 connect and two pole of transfiguration of plus earth
Pipe D2, the capacitor C2 that one end is connect with the cathode of varactor D8, the first port being connect with the other end of capacitor C2
The cathode of Port1, cathode and varactor D3 connect and the varactor D4 of plus earth, one end and varactor D9
Cathode connection capacitor C3, the third port Port3 being connect with the other end of capacitor C3, the yin of cathode and varactor D5
Pole connect and plus earth varactor D6, and with first port Port1, second port Port2 and third port
The sub-miniature A connector that Port3 connects one to one；First electric impedance resonator and the second electric impedance resonator relative position are laid, and
It lays second electric impedance resonator position opposite with third electric impedance resonator；The medium substrate with a thickness of 25mil, and opposite be situated between
Electric constant is 10.2；
First electric impedance resonator, the second electric impedance resonator are identical with the structure of third electric impedance resonator, include one at
The first low-impedance strips (1) and the second low-impedance strips (2) of type, the side edge and the second Low ESR of first low-impedance strips (1)
The side edge of band (2) is total to side and collectively forms Γ type structure by the first low-impedance strips (1) and the second low-impedance strips (2)；
The length l of first low-impedance strips (1)1For 8mm, width w1For 4mm；Changdu l of second low-impedance strips (2)2For
20mm, width w2For 1.18mm；
The distance s of first low-impedance strips of the first low-impedance strips and the second electric impedance resonator of first electric impedance resonator1For
2mm, the distance s of the first low-impedance strips of the first low-impedance strips and third electric impedance resonator of the second electric impedance resonator2For
1.2mm；
The varactor D10, varactor D11, varactor D13, varactor D1, varactor D7,
Varactor D3, varactor D8, varactor D5 and varactor D9 cathode connect with reverse bias power supply
It connects.
2. the centre frequency and bandwidth adjustable multifunctional filter according to claim 1 based on mini strip line resonator,
It is characterized in that, further include the resistance R9 that one end is connect with the first low-impedance strips of the first electric impedance resonator and the other end is grounded,
One end is connect with the first low-impedance strips of the second electric impedance resonator and the resistance R10 of other end ground connection and one end are hindered with third
First low-impedance strips of antiresonance device connect and the resistance R11 of other end ground connection.
3. the centre frequency and bandwidth adjustable Multifunction filtering according to claim 1 or 2 based on mini strip line resonator
Device, which is characterized in that further include that one end is connect with the cathode of varactor D10 and varactor D11 and the other end respectively
The resistance R7 being connect with reverse bias power supply, one end connect with the cathode of varactor D12 and varactor D13 respectively,
And the resistance R8 that the other end is connect with reverse bias power supply, it is connected between the cathode of varactor D1 and reverse bias power supply
Resistance R2, the resistance R1 being connected between the cathode of varactor D7 and reverse bias power supply is connected to varactor
Resistance R3 between the cathode and reverse bias power supply of D8, is connected between the cathode of varactor D3 and reverse bias power supply
Resistance R4, the resistance R6 being connected between the cathode of varactor D9 and reverse bias power supply, and be connected to transfiguration two
Resistance R5 between the cathode and reverse bias power supply of pole pipe D5.
4. the centre frequency and bandwidth adjustable multifunctional filter according to claim 3 based on mini strip line resonator,
It is characterized in that, the varactor D1 is connected to the bottom center of the first low-impedance strips of the first electric impedance resonator, and become
Hold the distance d that diode D7 is connected to the first low-impedance strips bottom away from the first electric impedance resonator1At 0.68mm；The transfiguration
Diode D5 is connected to the bottom center of the first low-impedance strips of third electric impedance resonator, and varactor D9 is connected to away from
The distance d of first low-impedance strips bottom of three electric impedance resonators1At 0.68mm；The varactor D3 is connected to the second resistance
The bottom center of first low-impedance strips of antiresonance device, and to be connected to first away from the second electric impedance resonator low by varactor D8
Distance d of the impedance with bottom2At 1.38mm.
5. the centre frequency and bandwidth adjustable multifunctional filter according to claim 2 based on mini strip line resonator,
It is characterized in that, the resistance R9 is connected to the bottom margin of the first low-impedance strips of the first electric impedance resonator and hinders with first
First low-impedance strips of antiresonance device and the total side of the second low-impedance strips are opposite；The resistance R10 is connected to the second impedance resonance
The bottom margin of first low-impedance strips of device and with the first low-impedance strips of the second electric impedance resonator and being total to for the second low-impedance strips
Side is opposite；The resistance R11 is connected to the bottom margin of the first low-impedance strips of third electric impedance resonator and humorous with third impedance
First low-impedance strips of vibration device and the total side of the second low-impedance strips are opposite.
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| CN109599650A (en) * | 2018-11-06 | 2019-04-09 | 杨涛 | Restructural balun filter based on mini strip line resonator |
| CN110289830A (en) * | 2019-07-30 | 2019-09-27 | 成都频岢微电子有限公司 | A kind of branch's filter network |
| CN110365304A (en) * | 2019-07-30 | 2019-10-22 | 成都频岢微电子有限公司 | A kind of branch's filter |
| CN110492865A (en) * | 2019-08-05 | 2019-11-22 | 电子科技大学 | A kind of mixed filtering network |
| CN110518892A (en) * | 2019-08-05 | 2019-11-29 | 电子科技大学 | A kind of quadrature filtering method and device |
| CN112187205A (en) * | 2020-08-20 | 2021-01-05 | 电子科技大学 | Power division filter network with random phase difference output |
| CN113422182A (en) * | 2021-07-02 | 2021-09-21 | 杭州电子科技大学 | Adjustable low-pass filter based on impedance tuning |
| CN114464973A (en) * | 2022-01-19 | 2022-05-10 | 电子科技大学 | Reconfigurable filter attenuator based on continuously adjustable center frequency |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109599650B (en) * | 2018-11-06 | 2019-12-10 | 杨涛 | Reconfigurable balun filter based on microstrip line resonator |
| CN109599650A (en) * | 2018-11-06 | 2019-04-09 | 杨涛 | Restructural balun filter based on mini strip line resonator |
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| CN110289830A (en) * | 2019-07-30 | 2019-09-27 | 成都频岢微电子有限公司 | A kind of branch's filter network |
| CN110365304A (en) * | 2019-07-30 | 2019-10-22 | 成都频岢微电子有限公司 | A kind of branch's filter |
| CN110365304B (en) * | 2019-07-30 | 2023-05-09 | 成都频岢微电子有限公司 | Branch filter |
| CN110492865A (en) * | 2019-08-05 | 2019-11-22 | 电子科技大学 | A kind of mixed filtering network |
| CN110518892A (en) * | 2019-08-05 | 2019-11-29 | 电子科技大学 | A kind of quadrature filtering method and device |
| CN110492865B (en) * | 2019-08-05 | 2023-05-19 | 电子科技大学 | Mixed filter network |
| CN110518892B (en) * | 2019-08-05 | 2023-05-19 | 电子科技大学 | Orthogonal filter device |
| CN112187205A (en) * | 2020-08-20 | 2021-01-05 | 电子科技大学 | Power division filter network with random phase difference output |
| CN113422182B (en) * | 2021-07-02 | 2022-04-01 | 杭州电子科技大学 | Adjustable low-pass filter based on impedance tuning |
| CN113422182A (en) * | 2021-07-02 | 2021-09-21 | 杭州电子科技大学 | Adjustable low-pass filter based on impedance tuning |
| CN114464973B (en) * | 2022-01-19 | 2023-03-10 | 电子科技大学 | Reconfigurable filter attenuator based on continuously adjustable center frequency |
| CN114464973A (en) * | 2022-01-19 | 2022-05-10 | 电子科技大学 | Reconfigurable filter attenuator based on continuously adjustable center frequency |
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