CN105914468B - The microstrip line butler matrix with band-pass filtering property of resonator is loaded based on minor matters - Google Patents
The microstrip line butler matrix with band-pass filtering property of resonator is loaded based on minor matters Download PDFInfo
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- CN105914468B CN105914468B CN201610382612.0A CN201610382612A CN105914468B CN 105914468 B CN105914468 B CN 105914468B CN 201610382612 A CN201610382612 A CN 201610382612A CN 105914468 B CN105914468 B CN 105914468B
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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
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
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Abstract
The invention discloses a kind of microstrip line butler matrixs with band-pass filtering property loading resonator based on minor matters comprising 4 minor matters load resonators, 2 input terminal feeder line heads, 2 output end feeder line heads, 4 root port feeder lines.It is each to be electrically coupled between resonator and other two resonator or magnetic coupling, by being electrically coupled and phase-shift characterisitc is realized in the combination in magnetic coupling path.The present invention replaces three-dB coupler using minor matters load resonator element, simple in structure, and realizes band-pass filtering property；Phase shift is generated with magnetic-coupled combination of paths by being electrically coupled, not only eliminates the use of phase shifter, also ensures that preferable isolation, circuit size greatly reduce.Since butler matrix is microstrip structure, light weight and cost is low, is suitble to industrial mass manufacture, so butler matrix has advantage simple in structure, that design is easy, manufacturing cost is cheap.
Description
Technical field
The present invention relates to the technical fields of microstrip line form butler matrix, more particularly to a kind of to load resonance based on minor matters
The microstrip line butler matrix with band-pass filtering property of device.
Background technology
Due to the high speed development wirelessly communicated in recent years, either the universal of 3G technology, Internet of Things it is burning hot or 4G
It arrives, all indicate wireless technology and a booming peak period will be welcome.On the other hand, swift and violent with electronic information
The problems such as development, requirement of the people for communication quality is higher and higher, the interference of multipath fading and interchannel, also more seems heavy
It wants.The major technique solved these problems at present is to utilize beam switchover smart antenna, and butler matrix is as composition wave beam
The pith for switching smart antenna, can realize beam-forming network, therefore also become one of research hotspot in recent years.
Meanwhile in practical applications, in order to inhibit transmit signal undesire frequency and amplifier Intermodulation Interference, usually also need to cascade
One bandpass filter, this will cause the increasing of circuit size.If can be by butler matrix and band-pass filtering property collection
At in one structure, the size of circuit must can be greatly reduced, this also complies with the trend of device miniaturization.
More commonly used also eaily structure is intersected between input port and output port to butler matrix at present
The phase shifter for cascading three-dB coupler and special angle, enables the performance of butler matrix to reach expected index.
2013, O.M.Haraz et al. existed " IEEE International Conference on Ultra-
Wideband " on deliver entitled " Two-Layer Butterfly-Shaped 4 × 4Butler of Microstrip Matrix
For Ultra-Wideband Beam-Forming Applications " realize coupler using double-layer microstrip-line structure
With cross interconnected, the butler matrix that formation is one 4 × 4 of phase shifter.The structure is as shown in Fig. 1.
2013, Tong-Hong Lin et al. existed " IEEE TRANSACTIONS ON MICROWAVE THEORY AND
TECHNIQUES " on deliver entitled " 4 × 4ButlerMatrixUsing of Bandwidth Enhancement of
Broadband Forward-Wave DirectionalCoupler and Phase Difference Compensation ",
Using double panel structure, it is utilized respectively forward-wave direct-coupling and phase difference compensation technique realizes coupler and phase shifter, shape
At one 4 × 4 butler matrix.The structure is as shown in Fig. 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 " realize band-pass filtering property using cavity resonator, real using the coupling between cavity resonator
Existing phase shift, forms one 2 × 2 butler matrix with filtering characteristic.The structure is as shown in Fig. 3.
Invention content
The shortcomings that it is an object of the invention to overcome the prior art with it is insufficient, provide and a kind of loading resonator based on minor matters
Microstrip line butler matrix with band-pass filtering property, the butler matrix using input port and output port it
Between cascade resonator element structure, and by between resonator element be electrically coupled with magnetic-coupled combination, come realize output
Signal phase difference is 0 ° or 180 °, to which phase shifter structure be omitted, reduces the size of circuit, while cascade resonator list
Member can realize good band-pass filtering property.
The purpose of the invention is achieved by the following technical solution：
A kind of microstrip line butler matrix with band-pass filtering property loading resonator based on minor matters, with printed circuit
The mode of plate is produced on medium substrate 1,
A kind of microstrip line butler matrix with band-pass filtering property loading resonator based on minor matters, with printed circuit
The mode of plate is produced on medium substrate 1, is made respectively on the same face of the medium substrate and is useful for input electromagnetic wave signal
First input end feeder line head Port1 and the second input terminal feeder line head Port2, the first output end for exporting electromagnetic wave signal
Feeder line head Port3 and second output terminal feeder line head Port4, the first port being connected with the first input end feeder line head Port1
Feeder line 2, the second port feeder line 5 being connected with the second input terminal feeder line head Port2 and the first output end feeder line head
Connected Port3 third port feeder line 3,4, two groups of the 4th port feedline being connected with the second output terminal feeder line head Port4
Neighbouring and mirror symmetry the first resonator 9 and third resonator 6 and the 4th resonator 8 and the second resonator 7 respectively；
First resonator 9 and the 4th resonator 8 and the third resonator 6 and second resonator 7
Left and right is disposed adjacent；The first port feeder line 2 is located at the top of first resonator 9, and the third port feeder line 3 is located at
The lower section of the third resonator 6, and the first port feeder line 2 and about 3 feeder line of third port are parallel right
Claim setting；4th port feedline 4 is located at the outside of the 4th resonator 8, and the second port feeder line 5 is located at described the
The outside of two resonators 7, and the 4th port feedline 4 is located at the second port feeder line 5 in same vertical straight line；
The first port feeder line 2 and the second port feeder line 4 or so are vertically arranged；3 He of third port feeder line
The second port feeder line 5 or so is vertically arranged.
Further, first resonator 9, the 4th resonator 8, second resonator 7, the third resonance
Device 6 is minor matters load resonator.
Further, first resonator 9 includes the U-shaped resonator and L of opening to the left with the third resonator 6
Type minor matters, wherein the bottom end of U-shaped resonator is connected with one end of L-type minor matters.
Further, the 4th resonator 8 includes the U-shaped resonator and L-type minor matters of opening upwards, wherein U-shaped resonance
The left side of device is connected with one end of L-type minor matters；Second resonator 7 includes the U-shaped resonator and L-type minor matters that Open Side Down,
Wherein, the left side of U-shaped resonator is connected with one end of L-type minor matters.
Further, first resonator 9 and the third resonator 6, first resonator 9 and the described 4th are humorous
Shake to exist between device 8, the third resonator 6 and second resonator 7 and be electrically coupled, respectively by adjust above-mentioned resonator it
Between the first coupling gap 10, the second coupling gap 11, third coupling gap 12 size control the size that is electrically coupled.
Further, there are magnetic couplings between second resonator 7 and the 4th resonator 8, above-mentioned by adjusting
The size of the 4th coupling gap 13 between resonator controls magnetic-coupled size.
Further, when the first input end feeder line head Port1 inputs electromagnetic wave signal, the first output end feeder line
The signal phase of head Port3 and second output terminal feeder line head Port4 outputs is equal.
Further, when the second input terminal feeder line head Port2 inputs electromagnetic wave signal, the first output end feeder line
The signal phase of head Port3 and second output terminal feeder line head Port4 outputs differs 180 °.
Further, one end vertical connection of the first input end feeder line head Port1 and the first port feeder line 2,
One end vertical connection of the second input terminal feeder line head Port2 and the second port feeder line 5, the first output end feeder line
One end vertical connection of head Port3 and the third port feeder line 3, the second output terminal feeder line head Port4 and the described 4th
One end vertical connection of port feedline 4.
The present invention has the following advantages and effects with respect to the prior art：
1, three-dB coupler is replaced using minor matters load resonator element, it is simple in structure, and realize bandpass filtering spy
Property.
2, phase shift is generated with magnetic-coupled combination of paths by being electrically coupled, not only eliminates the use of phase shifter, also protects
Preferable isolation is demonstrate,proved, circuit size greatly reduces.
3, since butler matrix is microstrip structure, light weight and cost is low, is suitble to industrial mass manufacture, so Butler
Matrix has advantage simple in structure, that design is easy, manufacturing cost is cheap.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of butler matrix disclosed in the prior art 1；
Fig. 2 is a kind of structural schematic diagram of butler matrix disclosed in the prior art 2；
Fig. 3 is a kind of structural schematic diagram of butler matrix disclosed in the prior art 3；
Fig. 4 is the microstrip line Butler square with band-pass filtering property proposed by the present invention that resonator is loaded based on minor matters
The structural schematic diagram of battle array；
Fig. 5 is the microstrip line Butler square with band-pass filtering property proposed by the present invention that resonator is loaded based on minor matters
The structure size schematic diagram of battle array；
Fig. 6 (a) be from the ports Port1 input signal when butler matrix scattering parameter simulation result diagram；
Fig. 6 (b) be from the ports Port2 input signal when butler matrix scattering parameter simulation result diagram；
Fig. 7 is the microstrip line Butler square with band-pass filtering property proposed by the present invention that resonator is loaded based on minor matters
The phase of output signal differential of the ports Port3 and the ports Port4 of battle array is intended to；
Fig. 8 is the error of the simulation result and ideal phase of output signal difference of phase of output signal difference proposed by the present invention
Schematic diagram.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
Embodiment
The present embodiment discloses a kind of microstrip line Butler square with band-pass filtering property loading resonator based on minor matters
Battle array is as shown in Figure 1, the microstrip line butler matrix is produced in the manner of a printed circuit board on double-sided copper-clad micro-strip plate 1, micro-strip
In addition plate is to cover copper earth plate on one side.In the structure chart of butler matrix in the present invention.
The first input end feeder line head for being useful for input electromagnetic wave signal is made on the same face of the medium substrate respectively
Port1 and the second input terminal feeder line head Port2, the first output end feeder line head Port3 and second for exporting electromagnetic wave signal
Output end feeder line head Port4, the first port feeder line 2 being connected with the first input end feeder line head Port1, with it is described second defeated
The third port for entering to hold the connected second port feeder lines 5 of feeder line head Port2, being connected with the first output end feeder line head Port3
Feeder line 3,4, the two groups of difference of the 4th port feedline being connected with the second output terminal feeder line head Port4 are neighbouring and mirror image pair
The first resonator 9 claimed and third resonator 6 and the 4th resonator 8 and the second resonator 7；
First resonator 9 and the 4th resonator 8 and the third resonator 6 and second resonator 7
Left and right is disposed adjacent；The first port feeder line 2 is located at the top of first resonator 9, and the third port feeder line 3 is located at
The lower section of the third resonator 6, and the first port feeder line 2 and about 3 feeder line of third port are parallel right
Claim setting；4th port feedline 4 is located at the outside of the 4th resonator 8, and the second port feeder line 5 is located at described the
The outside of two resonators 7, and the 4th port feedline 4 is located at the second port feeder line 5 in same vertical straight line；
The first port feeder line 2 and the second port feeder line 4 or so are vertically arranged；3 He of third port feeder line
The second port feeder line 5 or so is vertically arranged.
Wherein, first resonator 9, the 4th resonator 8, second resonator 7, the third resonator 6
It is minor matters load resonator.
Wherein, first resonator 9 includes the U-shaped resonator of opening to the left and L-type branch with the third resonator 6
Section, also, the bottom end of U-shaped resonator is connected with one end of L-type minor matters.
Wherein, the 4th resonator 8 includes the U-shaped resonator and L-type minor matters of opening upwards, wherein U-shaped resonator
Left side is connected with one end of L-type minor matters；Second resonator 7 includes the U-shaped resonator and L-type minor matters that Open Side Down, wherein
The left side of U-shaped resonator is connected with one end of L-type minor matters.
The external sort factor of bandpass filter can pass through the coupling between the length and feeder line resonator of change feeder line
It adjusts.First resonator 9 and the third resonator 6, first resonator 9 and the 4th resonator 8, described the
Exist between three resonators 6 and second resonator 7 and be electrically coupled, respectively by adjusting the first coupling between above-mentioned resonator
The size that the size control in gap 10, the second coupling gap 11, third coupling gap 12 is electrically coupled.
There are magnetic couplings between second resonator 7 and the 4th resonator 8, by between the above-mentioned resonator of adjusting
The size of the 4th coupling gap 13 control magnetic-coupled size.
When first input end feeder line head Port1 input electromagnetic wave signal, the first output end feeder line head Port3 and
The signal phase of the second output terminal feeder line head Port4 outputs is equal.
When the second input terminal feeder line head Port2 input electromagnetic wave signal, the first output end feeder line head Port3 and
The signal phase of the second output terminal feeder line head Port4 outputs differs 180 °.
One end vertical connection of the first input end feeder line head Port1 and the first port feeder line 2, described second is defeated
Enter to hold one end vertical connection of feeder line head Port2 and the second port feeder line 5, the first output end feeder line head Port3 with
One end vertical connection of the third port feeder line 3, the second output terminal feeder line head Port4 and the 4th port feedline 4
One end vertical connection.
The signal inputted from the ports first input end feeder line head Port1, is coupled to the first resonance by first port feeder line 2
Then device 9 is coupled to the 4th resonator 8 by being electrically coupled between the first resonator 9 and the 4th resonator 8, and signal is made to produce
Raw 90 ° of phase is advanced, and then the signal of the 4th resonator 8 is coupled to second output terminal feeder line head by the 4th port feedline 4
Port4, therefore second output terminal feeder line head Port4 can receive advanced 90 ° of the signal of phase；Meanwhile first in resonator 9
Signal also can be coupled to third resonator 6 by being electrically coupled between the first resonator 9 and third resonator 6, and signal is made to produce
Raw 90 ° of phase is advanced, and then the signal of third resonator 6 is coupled to the first output end feeder line head by third port feeder line 3
Port3, therefore the first output end feeder line head Port3 can receive advanced 90 ° of the signal of phase；So the first output end feeder line head
The port of Port3 and second output terminal feeder line head Port4 can obtain all advanced 90 ° of the signal of phase, but their phase is also
It is equal.Simultaneously the 4th resonator 8 and signal in third resonator 6 respectively by the 4th resonator 8 and the second resonator 7 it
Between magnetic coupling and third resonator 6 and the second resonator 7 between be electrically coupled and be coupled to the second resonator 7, and generate respectively
90 ° of delayed phase and 90 ° of phase are advanced, then there are two letters equal in magnitude, that phase difference is 180 ° in the second resonator 7
Number, it cancels out each other, therefore the second input terminal feeder line head Port2 port output signal very littles, therefore have between two input ports
There is higher isolation.
The signal inputted from the second ports input terminal feeder line head Port2, is coupled to the second resonance by second port feeder line 5
Then device 7 is coupled to the 4th resonator 8 by the magnetic coupling between the second resonator 7 and the 4th resonator 8, and signal is made to produce
90 ° of delayed phase is given birth to, then the signal of the 4th resonator 8 is coupled to second output terminal feeder line head by the 4th port feedline 4
Port4, therefore second output terminal feeder line head Port4 can receive the signal of 90 ° of delayed phase；Meanwhile second in resonator 7
Signal also can be coupled to third resonator 6 by being electrically coupled between the second resonator 7 and third resonator 6, and signal is made to produce
Raw 90 ° of phase is advanced, and then the signal of third resonator 6 is coupled to the first output end feeder line head by third port feeder line 3
Port3, therefore the first output end feeder line head Port3 can receive advanced 90 ° of the signal of phase；So the first output end feeder line head
The port of Port3 and second output terminal feeder line head Port4 can respectively obtain 90 ° of delayed phase and advanced 90 ° of the signal of phase, therefore
Their phase differs 180 °.The 4th resonator 8 and signal in third resonator 6 pass through the 4th resonator 8 and the respectively simultaneously
Being electrically coupled between being electrically coupled between one resonator 9 and third resonator 6 and the first resonator 9 is coupled to the first resonator
9, and the phase for all generating 90 ° is advanced, therefore there are two equal in magnitude in the first resonator 9, phase difference is 180 °, is mutually supported
Disappear, therefore first input end feeder line head Port1 port output signal very littles, there is higher isolation.This four ports are equal
For 50 ohm of matching impedance.
Fig. 5 is Butler matrix structure scale diagrams proposed by the present invention.The structure chart is symmetrical.
Butler matrix is emulated using three-dimensional artificial software ZELAND IE3D, the Butler square that the present invention designs
The relative dielectric constant for the micro-strip substrate that battle array uses is 2.55, and the main structure parameters of medium level 0.8, filter are：L1
=17.80mm, L2=30.33mm, L3=5.60mm, L4=5.00mm, L5=5.60mm, L6=5.00mm, L7=11.00mm,
L8=6.09mm, L9=6.20mm, L10=18.49mm, L11=17.45mm, W1=1.00mm, W2=0.40mm, S1=
0.50mm,S2=0.48mm, S3=1.5mm, S4=0.58mm.
Fig. 6 (a) and Fig. 6 (b) show respectively from the ports Port1 and the ports Port2 input signal when butler matrix dissipate
Parameters simulation is penetrated as a result, the centre frequency of its band-pass filtering property is respectively 2.4Ghz, horizontal axis indicates Butler square in the present invention
The signal frequency of battle array, the longitudinal axis indicate amplitude, including insertion loss (S31、S41、S32、S42) amplitude, return loss (S11, S22)
Amplitude and isolation (S21, S12) amplitude, wherein S11, S22The return loss of port1 and port2, S are indicated respectively31It indicates
The insertion loss of port1 and port3, S41Indicate the insertion loss of port1 and port4, S32Indicate the insertion of port2 and port3
Loss, S42Indicate the insertion loss of port2 and port4.Insertion loss indicates input power and another port of a signal
Relationship between the output power of signal, corresponding mathematical function are：Output power/input power (dB)=20*log | S21
|.Return loss indicates the relationship between the input power of the port signal and the reflection power of signal, corresponding mathematical function
It is as follows：Reflection power/incident power==20*log | S11|。
In the passband of 2.4Ghz, return loss S11And S22Absolute value be more than 17dB, insertion loss S31、S41、S32With
S42Absolute value be respectively less than 4dB.In terms of frequency range from 1.8 to 3Ghz, the isolation S of butler matrix12And S21Absolute value
More than 36dB.
Fig. 7 show butler matrix the ports Port3 and the ports Port4 phase of output signal it is poor, horizontal axis indicate this
The signal frequency of butler matrix in invention, the longitudinal axis indicate angle.In the passband of bandpass filter, when signal is from the ends Port1
When mouth input, two of substantially equal signals of phase can be received in the ports Port3 and the ports Port4；When signal is from Port2
When port inputs, two signals that phase difference is about 180 ° can be received in the ports Port3 and the ports Port4.Fig. 8 is shown
The error of the simulation result and ideal phase of output signal difference of phase of output signal difference.As shown in Fig. 8, in bandpass filter
Passband in, the error of the phase difference of output signal is less than 5 °.
In conclusion a kind of design scheme for butler matrix with band-pass filtering property that the present embodiment proposes, profit
Load resonator structures with four minor matters of combination, and it is each exist between resonator and other two resonators be electrically coupled or magnetic
Coupling makes the phase difference that output signal generates 0 ° or 180 ° by the combination of coupling path.It is small with flexible design, at
This is low, and isolation is high, and filtering characteristic is good, the small feature of phase of output signal mistake difference.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (7)
1. a kind of microstrip line butler matrix with band-pass filtering property loading resonator based on minor matters, with printed circuit board
Mode be produced on medium substrate (1), it is characterised in that：
The first input end feeder line head Port1 for being useful for input electromagnetic wave signal is made on the same face of the medium substrate respectively
With the second input terminal feeder line head Port2, the first output end feeder line head Port3 for exporting electromagnetic wave signal and second output terminal
Feeder line head Port4, the first port feeder line (2) being connected with the first input end feeder line head Port1 and second input terminal
Connected feeder line head Port2 second port feeder line (5), the third port being connected with the first output end feeder line head Port3 are presented
Line (3), the 4th port feedline (4) being connected with the second output terminal feeder line head Port4, two groups of difference are neighbouring and mirror image
Symmetrical first resonator (9) and third resonator (6) and the 4th resonator (8) and the second resonator (7)；
First resonator (9) and the 4th resonator (8) and the third resonator (6) and second resonator
(7) left and right is disposed adjacent；The first port feeder line (2) is located at the top of first resonator (9), the third port feedback
Line (3) is located at the lower section of the third resonator (6), and the first port feeder line (2) is presented with the third port
Parallel Symmetric is arranged line (3) up and down；4th port feedline (4) is located at the outside of the 4th resonator (8), and described second
Port feedline (5) is located at the outside of second resonator (7), and the 4th port feedline (4) and the second port
Feeder line (5) is located in same vertical straight line；
First resonator (9) includes U-shaped resonator and the L-type minor matters being open to the left with the third resonator (6),
In, the bottom end of U-shaped resonator is connected with one end of L-type minor matters；
4th resonator (8) includes the U-shaped resonator and L-type minor matters of opening upwards, wherein the left side of U-shaped resonator and L
One end of type minor matters is connected；Second resonator (7) includes the U-shaped resonator and L-type minor matters that Open Side Down, wherein U-shaped humorous
The shake left side of device is connected with one end of L-type minor matters；
The first port feeder line (2) and the second port feeder line (4) left and right are vertically arranged；The third port feeder line (3)
It is vertically arranged with the second port feeder line (5) left and right.
2. the microstrip line Butler square with band-pass filtering property according to claim 1 for loading resonator based on minor matters
Battle array, which is characterized in that first resonator (9), the 4th resonator (8), second resonator (7), the third
Resonator (6) is minor matters load resonator.
3. the microstrip line Bart with band-pass filtering property according to claim 1 or 2 for loading resonator based on minor matters
Strangle matrix, which is characterized in that first resonator (9) and the third resonator (6), first resonator (9) and institute
It states to exist between the 4th resonator (8), the third resonator (6) and second resonator (7) and be electrically coupled, pass through tune respectively
Save the size control of the first coupling gap (10), the second coupling gap (11), third coupling gap (12) between above-mentioned resonator
Make the size being electrically coupled.
4. the microstrip line Bart with band-pass filtering property according to claim 1 or 2 for loading resonator based on minor matters
Strangle matrix, which is characterized in that there are magnetic couplings between second resonator (7) and the 4th resonator (8), pass through adjusting
The size of the 4th coupling gap (13) between above-mentioned resonator controls magnetic-coupled size.
5. the microstrip line Bart with band-pass filtering property according to claim 1 or 2 for loading resonator based on minor matters
Strangle matrix, which is characterized in that when the first input end feeder line head Port1 inputs electromagnetic wave signal, the first output end feedback
The signal phase of the end of a thread Port3 and second output terminal feeder line head Port4 outputs is equal.
6. the microstrip line Bart with band-pass filtering property according to claim 1 or 2 for loading resonator based on minor matters
Strangle matrix, which is characterized in that when the second input terminal feeder line head Port2 inputs electromagnetic wave signal, the first output end feedback
The signal phase of the end of a thread Port3 and second output terminal feeder line head Port4 outputs differs 180 °.
7. the microstrip line Butler square with band-pass filtering property according to claim 1 for loading resonator based on minor matters
Battle array, which is characterized in that
One end vertical connection of the first input end feeder line head Port1 and the first port feeder line (2), second input
Hold feeder line head Port2 and the second port feeder line (5) one end vertical connection, the first output end feeder line head Port3 and
One end vertical connection of the third port feeder line (3), the second output terminal feeder line head Port4 and the 4th port feedline
(4) one end vertical connection.
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| 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 |
| CN109244679B (en) * | 2018-09-11 | 2023-10-20 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Compact multi-beam antenna array system |
| CN109638476B (en) * | 2018-12-29 | 2021-01-15 | 华南理工大学 | Feed network and dual-beam antenna |
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| CN102394333A (en) * | 2011-10-27 | 2012-03-28 | 电子科技大学 | Filtering directional coupler with adjustable frequency |
| CN205723954U (en) * | 2016-06-01 | 2016-11-23 | 华南理工大学 | The microstrip line butler matrix with band-pass filtering property of resonator is loaded based on minor matters |
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| JP2007104290A (en) * | 2005-10-04 | 2007-04-19 | Mitsubishi Electric Corp | Directional coupler |
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2016
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394333A (en) * | 2011-10-27 | 2012-03-28 | 电子科技大学 | Filtering directional coupler with adjustable frequency |
| CN205723954U (en) * | 2016-06-01 | 2016-11-23 | 华南理工大学 | The microstrip line butler matrix with band-pass filtering property of resonator is loaded based on minor matters |
Non-Patent Citations (1)
| Title |
|---|
| 《Advanced Butler matrices with integrated bandpass filter functions》;Vittorio Tornielli di Crestvolant;《IEEE Transactions on microwave theory and techniques》;20151030;第63卷(第10期);3433-3444 * |
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| CN105914468A (en) | 2016-08-31 |
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