CN105914469A - Microstrip line Butler matrix provided with bandpass filtering characteristic and based on uniform impedance resonators - Google Patents
Microstrip line Butler matrix provided with bandpass filtering characteristic and based on uniform impedance resonators Download PDFInfo
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- CN105914469A CN105914469A CN201610383314.3A CN201610383314A CN105914469A CN 105914469 A CN105914469 A CN 105914469A CN 201610383314 A CN201610383314 A CN 201610383314A CN 105914469 A CN105914469 A CN 105914469A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/40—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with phasing matrix
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
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Abstract
The invention discloses a microstrip line Butler matrix provided with a bandpass filtering characteristic and based on uniform impedance resonators. The microstrip line Butler matrix comprises four half-wavelength uniform impedance resonators, two input end feed line heads, two output end feed line heads and four port feed lines. Each resonator is electrically or magnetically coupled with another two resonators, and a phase shift characteristic is realized by means of the combination of electric coupling and magnetic coupling paths. According to the invention, 3dB couplers are replaced by the uniform impedance resonators, the structure is simple, and the bandpass filtering characteristic is realized; the phase shift characteristic is realized by means of the combination of electric coupling and magnetic coupling paths, a phase shifter is omitted, a relatively good isolation degree is ensured, and the size of the circuit is substantially reduced; in addition, the Butler matrix is of the microstrip structure, the weight is light, the cost is low, the industrial batch production is facilitated, and the Butler matrix has the advantages of simple structure, easy design and low manufacturing cost.
Description
Technical field
The present invention relates to the technical field of microstrip line form butler matrix, particularly to one based on uniformly resistance
The microstrip line butler matrix with band-pass filtering property of antiresonance device.
Background technology
Due to the high speed development of radio communication in recent years, either universal, the Internet of Things of 3G technology is burning hot
Or the arrival of 4G, all indicates that wireless technology will welcome a flourish peak period again.The opposing party
Face, along with the fast development of electronic information, people are more and more higher for the requirement of communication quality, multipath fading
The problems such as the interference with interchannel the most more seem important.The major technique solving these problems at present is to utilize
Beam switchover smart antenna, and butler matrix is as the pith of composition beam switchover smart antenna, energy
Enough realize beam-forming network, therefore also become one of study hotspot in recent years.Meanwhile, should in reality
In with, in order to suppress to transmit undesire frequency and the Intermodulation Interference of amplifier of signal, generally also need to cascade one
Individual band filter, this will cause the increasing of circuit size.If able to by logical to butler matrix and band filter
Wave property is integrated in one structure, must be greatly reduced the size of circuit, and this also complies with device miniaturization
Trend.
At present the more commonly used structure the most eaily of butler matrix be input port and output port it
Between intersect cascade three-dB coupler and the phase shifter of special angle, make the performance of butler matrix can reach expection
Index.
2013, O.M.Haraz et al. existed " IEEE International Conference on
Ultra-Wideband " on deliver entitled " Two-Layer Butterfly-Shaped Microstrip 4 × 4
Butler Matrix for Ultra-Wideband Beam-Forming Applications ", use double
Layer microstrip line construction, it is achieved that bonder and phase shifter cross interconnected, forms the Butler of 4 × 4
Matrix.This structure is as shown in Figure 1.
2013, Tong-Hong Lin et al. existed " IEEE TRANSACTIONS ON MICROWAVE THEORY
AND TECHNIQUES " on deliver entitled " Bandwidth Enhancement of 4 ×
4ButlerMatrixUsing Broadband Forward-Wave DirectionalCoupler and Phase
Difference Compensation ", use double panel structure, be utilized respectively forward-wave direct-coupling and phase
The different compensation technique of potential difference realizes bonder and phase shifter, forms the butler matrix of 4 × 4.This structure
As shown in Figure 2.
2015, M.J.Lancaster et al. existed " IEEE TRANSACTIONS ON MICROWAVE THEORY
AND TECHNIQUES " on deliver entitled " Advanced Butler Matrices with Integrated
Bandpass Filter Functions ", use cavity resonator to realize band-pass filtering property, utilize chamber
Coupling between body resonator realizes phase shift, forms the butler matrix of 2 × 2 band filtering characteristics.Should
Structure is as shown in Figure 3.
Summary of the invention
It is an object of the invention to the shortcoming overcoming prior art with not enough, it is provided that a kind of humorous based on uniform impedance
Shake the microstrip line butler matrix with band-pass filtering property of device, and this butler matrix uses in input
The structure of resonator element is cascaded between port and output port, and by the electric coupling between resonator element
With magnetic-coupled combination, realizing phase of output signal difference is 0 ° or 180 °, thus eliminates phase shifter knot
Structure, reduces the size of circuit, and the resonator element simultaneously cascaded is capable of good band-pass filtering property.
The purpose of the present invention is achieved through the following technical solutions:
A kind of microstrip line butler matrix with band-pass filtering property based on uniform impedance resonator, with print
The mode of printed circuit board is produced on medium substrate 1,
Make respectively on the same face of described medium substrate and have the first input end for inputting electromagnetic wave signal
Feeder line head P1 and the second input feeder line head P2, for exporting the first outfan feeder line head of electromagnetic wave signal
P3 and the second outfan feeder line head P4, the first port feedline being connected with described first input end feeder line head P1
2, the second port feedline 5 being connected with described second input feeder line head P2 and described first outfan feedback
The 3rd port feedline 3 that the end of a thread P3 is connected, the 4th port that is connected with described second outfan feeder line head P4
Feeder line 4, two groups the first resonator 9 and the 4th resonator 8 and the 3rd resonance that left and right be arranged in parallel respectively
Device 6 and the second resonator 7；
Described first resonator 9 and described 4th resonator 8 and described 3rd resonator 6 and described second
Resonator about 7 be arranged in parallel；Described first port feedline 2 and described 4th port feedline 4 lay respectively at
Described first resonator 9 and the outside of described 4th resonator 8, and described first port feedline 2
It is arranged in parallel with described second port feedline about 4；Described 3rd port feedline 3 and described second port feedback
Line 5 lays respectively at described 3rd resonator 6 and the outside of described second resonator 7, and described 3rd end
Mouth feeder line 3 and described second port feedline about 5 be arranged in parallel.
Further, described first resonator 9, described 4th resonator 8, described second resonator 7, institute
State the 3rd resonator 6 and be half-wavelength uniform impedance resonator.
Further, described first resonator 9 and the c-type that described 3rd resonator 6 is setting symmetrical above and below
Resonator, wherein, the opening direction of described first resonator 9 is lower right, described 3rd resonator 6
Opening direction is upper right side.
Further, described 4th resonator 8 is the U-shaped of setting symmetrical above and below with described second resonator 7
Resonator, wherein, the opening direction of described 4th resonator 8 is top, opening of described second resonator 7
Mouth direction is lower section.
Further, described first resonator 9 and described 3rd resonator 6, described first resonator 9 with
Electric coupling is there is between described 4th resonator 8, described 3rd resonator 6 and described second resonator 7,
Respectively by regulating first coupling gap the 10, second coupling gap the 11, the 3rd coupling between above-mentioned resonator
The size closing gap 12 controls the size of electric coupling.
Further, there is magnetic coupling between described second resonator 7 and described 4th resonator 8, pass through
The size regulating the 4th coupling gap 13 between above-mentioned resonator controls magnetic-coupled size.
Further, when described first input end feeder line head P1 inputs electromagnetic wave signal, described first output
The signal phase of end feeder line head P3 and described second outfan feeder line head P4 output is equal.
Further, when described second input feeder line head P2 inputs electromagnetic wave signal, described first output
The signal phase of end feeder line head P3 and described second outfan feeder line head P4 output differs 180 °.
Further, described first input end feeder line head P1 is vertical with one end of described first port feedline 2
Connecting, described second input feeder line head P2 is vertical with one end of described second port feedline 5 to be connected, institute
State that the first outfan feeder line head P3 is vertical with one end of described 3rd port feedline 3 to be connected, described second defeated
Go out to hold that feeder line head P4 is vertical with one end of described 4th port feedline 4 is connected.
The present invention has such advantages as relative to prior art and effect:
1, use uniform impedance resonator element to replace three-dB coupler, simple in construction, and achieve
Band-pass filtering property.
2, by electric coupling and the incompatible generation phase shift of magnetic-coupled group of paths, making of phase shifter is not only eliminated
With, also ensure that preferable isolation, circuit size is greatly reduced.
3, it is microstrip structure due to butler matrix, lightweight, low cost, is suitable for industrial mass manufacture,
So butler matrix possesses simple in construction, designs advantage easy, cheap for manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of butler matrix disclosed in prior art 1；
Fig. 2 is the structural representation of a kind of butler matrix disclosed in prior art 2；
Fig. 3 is the structural representation of a kind of butler matrix disclosed in prior art 3；
Fig. 4 is the microstrip line bar with band-pass filtering property based on uniform impedance resonator that the present invention proposes
The structural representation of Teller matrix；
Fig. 5 is the microstrip line bar with band-pass filtering property based on uniform impedance resonator that the present invention proposes
The physical dimension schematic diagram of Teller matrix；
Fig. 6 (a) is the scattering parameter simulation result figure of butler matrix when P1 port input signal；
Fig. 6 (b) is the scattering parameter simulation result figure of butler matrix when P2 port input signal；
Fig. 7 is the microstrip line bar with band-pass filtering property based on uniform impedance resonator that the present invention proposes
The P3 port of Teller matrix and the phase of output signal differential of P4 port are intended to；
Fig. 8 is that the simulation result of the phase of output signal difference that the present invention proposes is poor with preferable phase of output signal
Error schematic diagram.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, clear and definite, develop simultaneously referring to the drawings
The present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Embodiment
The present embodiment discloses a kind of microstrip line bar with band-pass filtering property based on uniform impedance resonator
Teller matrix is as it is shown in figure 1, this microstrip line butler matrix is produced on two-sided covering in the manner of a printed circuit board
On copper micro-strip plate 1, the additionally one side of micro-strip plate is to cover copper earth plate.Butler matrix in the present invention
In structure chart.
Make respectively on the same face of described medium substrate and have the first input end for inputting electromagnetic wave signal
Feeder line head P1 and the second input feeder line head P2, for exporting the first outfan feeder line head of electromagnetic wave signal
P3 and the second outfan feeder line head P4, the first port feedline being connected with described first input end feeder line head P1
2, the second port feedline 5 being connected with described second input feeder line head P2 and described first outfan feedback
The 3rd port feedline 3 that the end of a thread P3 is connected, the 4th port that is connected with described second outfan feeder line head P4
Feeder line 4, two groups the first resonator 9 and the 4th resonator 8 and the 3rd resonance that left and right be arranged in parallel respectively
Device 6 and the second resonator 7；
Described first resonator 9 and described 4th resonator 8 and described 3rd resonator 6 and described second
Resonator about 7 be arranged in parallel；Described first port feedline 2 and described 4th port feedline 4 lay respectively at
Described first resonator 9 and the outside of described 4th resonator 8, and described first port feedline 2
It is arranged in parallel with described second port feedline about 4；Described 3rd port feedline 3 and described second port feedback
Line 5 lays respectively at described 3rd resonator 6 and the outside of described second resonator 7, and described
Three port feedline 3 and described second port feedline about 5 be arranged in parallel.
Wherein, described first resonator 9, described 4th resonator 8, described second resonator 7, described
Three resonators 6 are half-wavelength uniform impedance resonator.
Wherein, described first resonator 9 and the c-type resonance that described 3rd resonator 6 is setting symmetrical above and below
Device, wherein, the opening direction of described first resonator 9 is lower right, the opening of described 3rd resonator 6
Direction is upper right side.
Meanwhile, described 4th resonator 8 and the U-shaped resonance that described second resonator 7 is setting symmetrical above and below
Device, wherein, the opening direction of described 4th resonator 8 is top, the openings of described second resonator 7
To for lower section.
The external sort factor of band filter can be by between the length of change feeder line and feeder line resonator
Coupling regulation.Described first resonator 9 and described 3rd resonator 6, described first resonator 9 and institute
State and there is electric coupling between the 4th resonator 8, described 3rd resonator 6 and described second resonator 7, point
Not by regulating first coupling gap the 10, second coupling gap the 11, the 3rd coupling between above-mentioned resonator
The size in gap 12 controls the size of electric coupling.
Magnetic coupling is there is between described second resonator 7 and described 4th resonator 8, above-mentioned humorous by regulation
The size of the 4th coupling gap 13 shaken between device controls magnetic-coupled size.
When described first input end feeder line head P1 inputs electromagnetic wave signal, described first outfan feeder line head P3
Equal with the signal phase of described second outfan feeder line head P4 output.
When described second input feeder line head P2 inputs electromagnetic wave signal, described first outfan feeder line head P3
180 ° are differed with the signal phase of described second outfan feeder line head P4 output.
Described first input end feeder line head P1 is vertical with one end of described first port feedline 2 to be connected, described
Second input feeder line head P2 is vertical with one end of described second port feedline 5 to be connected, described first output
Feeder line head P3 is vertical with one end of described 3rd port feedline 3 is connected for end, described second outfan feeder line head
P4 is vertical with one end of described 4th port feedline 4 to be connected.
From the signal of first input end feeder line head P1 port input, it is coupled to the by the first port feedline 2
One resonator 9, is then coupled to the 4th by the electric coupling between the first resonator 9 and the 4th resonator 8
Resonator 8, and the phase place making signal produce 90 ° is advanced, then the signal of the 4th resonator 8 passes through the 4th
Port feedline 4 is coupled to the second outfan feeder line head P4, and therefore the second outfan feeder line head P4 can receive
The signal that phase place is advanced 90 °；Meanwhile, the signal in the first resonator 9, also can pass through the first resonator 9
And the 3rd resonator 6 is coupled in the electric coupling between the 3rd resonator 6, and makes the phase place of signal generation 90 °
In advance, then the signal of the 3rd resonator 6 is coupled to the first outfan feeder line head by the 3rd port feedline 3
P3, therefore the first outfan feeder line head P3 can receive the signal of advanced 90 ° of phase place；So the first output
The port of end feeder line head P3 and the second outfan feeder line head P4 can obtain the signal of the most advanced 90 ° of phase place, but
It it is their phase place or equal.4th resonator 8 passes through respectively with signal in the 3rd resonator 6 simultaneously
Magnetic coupling between 4th resonator 8 and the second resonator 7 and the 3rd resonator 6 and the second resonator 7 it
Between electric coupling be coupled to the second resonator 7, and produce the delayed phase of 90 ° respectively and the phase place of 90 ° surpasses
Before, then have in the second resonator 7 two equal in magnitude, phase contrast is the signal of 180 °, cancels out each other,
Therefore the second input feeder line head P2 port output signal is the least, therefore has relatively between two input ports
High isolation.
From the signal of the second input feeder line head P2 port input, it is coupled to the by the second port feedline 5
Two resonators 7, are then coupled to the 4th by the magnetic coupling between the second resonator 7 and the 4th resonator 8
Resonator 8, and make the delayed phase of signal generation 90 °, then the signal of the 4th resonator 8 passes through the 4th
Port feedline 4 is coupled to the second outfan feeder line head P4, and therefore the second outfan feeder line head P4 can receive
The signal that delayed phase is 90 °；Meanwhile, the signal in the second resonator 7, also can pass through the second resonator 7
And the 3rd resonator 6 is coupled in the electric coupling between the 3rd resonator 6, and makes the phase place of signal generation 90 °
In advance, then the signal of the 3rd resonator 6 is coupled to the first outfan feeder line head by the 3rd port feedline 3
P3, therefore the first outfan feeder line head P3 can receive the signal of advanced 90 ° of phase place；So the first output
The port of end feeder line head P3 and the second outfan feeder line head P4 can respectively obtain delayed phase 90 ° and phase place surpasses
The signal of first 90 °, therefore their phase 180 °.4th resonator 8 and the 3rd resonator 6 simultaneously
Middle signal is respectively by the electric coupling between the 4th resonator 8 and the first resonator 9 and the 3rd resonator 6
And the first resonator 9 is coupled in the electric coupling between the first resonator 9, and the phase place all producing 90 ° is advanced,
Therefore the first resonator 9 has two equal in magnitude, phase contrast is 180 °, cancels out each other, therefore first
Input feeder line head P1 port output signal is the least, has higher isolation.These four ports are
The coupling impedance of 50 ohm.
Fig. 5 is the Butler matrix structure scale diagrams that the present invention proposes.This structure chart is symmetrical.
Use three-dimensional artificial software ZELAND IE3D that butler matrix is emulated, the bar of present invention design
The relative dielectric constant of the micro-strip substrate that Teller matrix uses is 2.55, and medium level is 0.8, wave filter
Main structure parameters is: L1=12.85mm, L2=17.20mm, L3=5.00mm, L4=11.10mm, L5=11.57
mm,L6=5.63mm, L7=8.30mm, L8=13.95mm, W1=0.7mm, W2=1mm, W3=1mm, S1=0.20
mm,S2=0.89mm, S3=1.83mm, S4=1.58mm, S5=0.35mm.
Fig. 6 (a) and Fig. 6 (b) shows butler matrix when P1 port and P2 port input signal respectively
Scattering parameter simulation result, the mid frequency of its band-pass filtering property is respectively 2.4Ghz, and transverse axis represents this
The signal frequency of butler matrix in invention, the longitudinal axis represents amplitude, including insertion loss (S31、S41、S32、
S42) amplitude, return loss (S11, S22) amplitude and isolation (S21, S12) amplitude, wherein S11,
S22Represent the return loss of port1 Yu port2, S respectively31Represent the insertion loss of port1 and port3,
S41Represent the insertion loss of port1 and port4, S32Represent the insertion loss of port2 and port3, S42
Represent the insertion loss of port2 and port4.Insertion loss represent the input power of a signal and another
Relation between the output of port signal, its corresponding mathematical function is: output/input power
(dB)=20*log | S21|.Return loss represent the input power of this port signal and signal reflection power it
Between relation, its corresponding mathematical function is as follows: reflection power/incident power==20*log | S11|。
In the passband of 2.4Ghz, return loss S11And S22Absolute value more than 17dB, insertion loss S31、
S41、S32And S42Absolute value be respectively less than 4dB.In terms of the frequency range of 1.8 to 3Ghz, butler matrix
Isolation S12And S21Absolute value more than 36dB.
Fig. 7 shows that the phase of output signal of the P3 port of butler matrix and P4 port is poor, and transverse axis represents
The signal frequency of butler matrix in the present invention, the longitudinal axis represents angle.In the passband of band filter, when
Signal when P1 port inputs, can receive that phase place is of substantially equal at P3 port and P4 port two
Signal；When signal inputs from P2 port, phase contrast can be received at P3 port and P4 port and be about
Two signals of 180 °.Fig. 8 shows the simulation result of phase of output signal difference and preferable output signal
The error of phase contrast.As shown in Figure 8, in the passband of band filter, the phase contrast of output signal
Error is less than 5 °.
In sum, the design side of a kind of butler matrix with band-pass filtering property that the present embodiment proposes
Case, utilize combination four 1/2nd wavelength uniform impedance resonator structure, and each resonator and its
There is electric coupling or magnetic coupling between its two resonator, make output signal produce by the combination of coupling path
0 ° or the phase contrast of 180 °.Having flexible design, volume is little, low cost, and isolation is high, filtering characteristic
Good, that phase of output signal mistake difference is little feature.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-mentioned reality
Execute the restriction of example, the change made under other any spirit without departing from the present invention and principle, modification,
Substitute, combine, simplify, all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (9)
1. a microstrip line butler matrix with band-pass filtering property based on uniform impedance resonator,
It is produced in the manner of a printed circuit board on medium substrate (1), it is characterised in that:
Make respectively on the same face of described medium substrate and have the first input end for inputting electromagnetic wave signal
Feeder line head P1 and the second input feeder line head P2, for exporting the first outfan feeder line head of electromagnetic wave signal
P3 and the second outfan feeder line head P4, the first port feedline being connected with described first input end feeder line head P1
(2), the second port feedline (5) being connected with described second input feeder line head P2 is first defeated with described
Go out to hold the 3rd port feedline (3) that feeder line head P3 is connected, be connected with described second outfan feeder line head P4
4th port feedline (4), two groups of first resonators (9) that left and right be arranged in parallel respectively and the 4th resonator
And the 3rd resonator (6) and the second resonator (7) (8)；
Described first resonator (9) and described 4th resonator (8) and described 3rd resonator (6)
It is arranged in parallel up and down with described second resonator (7)；Described first port feedline (2) and described 4th end
Mouth feeder line (4) lays respectively at described first resonator (9) and the outside of described 4th resonator (8),
And described first port feedline (2) and described second port feedline (4) left and right be arranged in parallel；Described
Three port feedline (3) and described second port feedline (5) lay respectively at described 3rd resonator (6)
With the outside of described second resonator (7), and described 3rd port feedline (3) and described second port
Feeder line (5) left and right be arranged in parallel.
The most according to claim 1 based on uniform impedance resonator have the micro-of band-pass filtering property
Band wire butler matrix, it is characterised in that described first resonator (9), described 4th resonator (8),
Described second resonator (7), described 3rd resonator (6) are half-wavelength uniform impedance resonator.
The most according to claim 2 based on uniform impedance resonator have the micro-of band-pass filtering property
Band wire butler matrix, it is characterised in that described first resonator (9) and described 3rd resonator (6)
For the c-type resonator of setting symmetrical above and below, wherein, the opening direction of described first resonator (9) is right
Lower section, the opening direction of described 3rd resonator (6) is upper right side.
The most according to claim 2 based on uniform impedance resonator have the micro-of band-pass filtering property
Band wire butler matrix, it is characterised in that described 4th resonator (8) and described second resonator (7)
For the U-shaped resonator of setting symmetrical above and below, wherein, the opening direction of described 4th resonator (8) is upper
Side, the opening direction of described second resonator (7) is lower section.
5. described based on uniform impedance resonator there is bandpass filtering according to Claims 1-4 is arbitrary
The microstrip line butler matrix of characteristic, it is characterised in that described first resonator (9) is 3rd humorous with described
Shake device (6), described first resonator (9) and described 4th resonator (8), described 3rd resonator (6)
And there is electric coupling between described second resonator (7), respectively by regulating the between above-mentioned resonator
One coupling gap (10), the second coupling gap (11), the size of the 3rd coupling gap (12) control thermocouple
The size closed.
6. described based on uniform impedance resonator there is bandpass filtering according to Claims 1-4 is arbitrary
The microstrip line butler matrix of characteristic, it is characterised in that described second resonator (7) is 4th humorous with described
Shake and there is magnetic coupling between device (8), by regulating the 4th coupling gap (13) between above-mentioned resonator
Size control magnetic-coupled size.
7. described based on uniform impedance resonator there is bandpass filtering according to Claims 1-4 is arbitrary
The microstrip line butler matrix of characteristic, it is characterised in that described first input end feeder line head P1 inputs electromagnetism
During ripple signal, described first outfan feeder line head P3 and the signal of described second outfan feeder line head P4 output
Phase place is equal.
8. described based on uniform impedance resonator there is bandpass filtering according to Claims 1-4 is arbitrary
The microstrip line butler matrix of characteristic, it is characterised in that described second input feeder line head P2 inputs electromagnetism
During ripple signal, described first outfan feeder line head P3 and the signal of described second outfan feeder line head P4 output
Phase 180 °.
The most according to claim 1 based on uniform impedance resonator have the micro-of band-pass filtering property
Band wire butler matrix, it is characterised in that
Described first input end feeder line head P1 is vertical with one end of described first port feedline (2) to be connected, institute
State that the second input feeder line head P2 is vertical with one end of described second port feedline (5) to be connected, described first
Outfan feeder line head P3 is vertical with one end of described 3rd port feedline (3) to be connected, described second outfan
Feeder line head P4 is vertical with one end of described 4th port feedline (4) to be connected.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879098A (en) * | 2018-06-11 | 2018-11-23 | 华南理工大学 | 2 × 4 butler matrix of microstrip line with band-pass filtering property |
| CN109586020A (en) * | 2018-12-05 | 2019-04-05 | 广东工业大学 | A kind of circularly-polarized patch antenna |
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| CN104409811A (en) * | 2014-11-26 | 2015-03-11 | 华南理工大学 | Switchable plane surface bandpass-bandstop filter |
| US20150244072A1 (en) * | 2012-09-11 | 2015-08-27 | Alcatel Lucent | Multiband antenna with variable electrical tilt |
| CN205723953U (en) * | 2016-06-01 | 2016-11-23 | 华南理工大学 | The microstrip line butler matrix with band-pass filtering property based on uniform impedance resonator |
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2016
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| CN101038979A (en) * | 2006-03-16 | 2007-09-19 | 中国科学院上海微系统与信息技术研究所 | Compensation type helix microstrip resonant unit and branch line coupler |
| CN102130662A (en) * | 2010-10-20 | 2011-07-20 | 许河秀 | Fractal and composite right/left-handed transmission line-based miniature double-frequency microstrip rat-race coupler |
| CN102394333A (en) * | 2011-10-27 | 2012-03-28 | 电子科技大学 | Filtering directional coupler with adjustable frequency |
| US20150244072A1 (en) * | 2012-09-11 | 2015-08-27 | Alcatel Lucent | Multiband antenna with variable electrical tilt |
| CN104409811A (en) * | 2014-11-26 | 2015-03-11 | 华南理工大学 | Switchable plane surface bandpass-bandstop filter |
| CN205723953U (en) * | 2016-06-01 | 2016-11-23 | 华南理工大学 | The microstrip line butler matrix with band-pass filtering property based on uniform impedance resonator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879098A (en) * | 2018-06-11 | 2018-11-23 | 华南理工大学 | 2 × 4 butler matrix of microstrip line with band-pass filtering property |
| CN108879098B (en) * | 2018-06-11 | 2024-01-26 | 华南理工大学 | Microstrip line 2 x 4butler matrix with band-pass filtering characteristic |
| CN109586020A (en) * | 2018-12-05 | 2019-04-05 | 广东工业大学 | A kind of circularly-polarized patch antenna |
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| CN105914469B (en) | 2018-09-14 |
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