CN105896081A - Dual frequency electrically controlled reconfigurable butler matrix feed network - Google Patents
Dual frequency electrically controlled reconfigurable butler matrix feed network Download PDFInfo
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- CN105896081A CN105896081A CN201610268104.XA CN201610268104A CN105896081A CN 105896081 A CN105896081 A CN 105896081A CN 201610268104 A CN201610268104 A CN 201610268104A CN 105896081 A CN105896081 A CN 105896081A
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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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Abstract
A dual frequency electrically controlled reconfigurable butler matrix feed network is mainly composed of 90-degree bridges having dual-band features, electrically controlled reconfigurable 45-degree phase shit matrixes, a dual-band jumper connector and a switch matrix. The electrically controlled reconfigurable 45-degree phase shit matrixes switch at different frequencies by controlling the switch matrix, so that the butler matrix can switch arbitrarily at two different working frequencies, and the working frequency reconfiguration is achieved. The electrically controlled reconfigurable butler matrix feed network can be implemented via the flat printing technology, and is compact in structure and applicable to small wireless communication systems.
Description
Technical field
The invention belongs to microwave engineering field, relate to a kind of matrix feed network.
Background technology
Along with the quick growth of wireless communication technology, the network capacity of wireless communication system receives limit greatly
System.In order to improve the utilization rate of frequency spectrum resource, increase channel capacity, smart antenna satellite communication system,
The system such as PCS Personal Communications System and WLAN has been widely used.
At present, smart antenna is broadly divided into adaptive antenna and multibeam antenna two class, and multibeam antenna because of
The features such as its simple in construction, beam switchover are flexible, superior performance, play weight the most in the field of wireless communication
Want role.Multiple beam forming network based on butler matrix is the core component of multibeam antenna, and it is permissible
Efficiently control the PHASE DISTRIBUTION of antenna array, thus realize being differently directed of wave beam.
Butler matrix feed network is typically to be made up of 3dB electric bridge, bridging plug and phase-shifter, its
Operation principle is when encouraging each input port, and input power distributes to output in certain proportion
Port and specific phase contrast can be produced between adjacent output port, but microwave energy is from different input ports
During input, the phase contrast of output port is different.Therefore encourage different input ports, can obtain different
Phase contrast, so that the beam position of antenna is different, it is achieved multi-beam.But traditional butler matrix is usual
Constituted by being only capable of being operated in the 3dB electric bridge of single frequency band, bridging plug and fixed phase drift device, therefore,
Once design, caused it to be only capable of being operated in single communication frequency band, it is impossible to meet multiband work requirements,
Therefore the range of application of butler matrix is limited.
Summary of the invention
Present invention solves the technical problem that and be: be only capable of being operated in single frequency band for existing butler matrix,
The demand of multiband gating work cannot be met, it is proposed that a kind of double frequency automatically controlled reconfigurable butler matrix feedback
Electric network, it is achieved two-band gating work.
The technical solution of the present invention is: a kind of double frequency automatically controlled restructural butler matrix feed network, bag
Include the one 90 ° of electric bridge, the 2nd 90 ° of electric bridge, the 3rd 90 ° of electric bridge, the 4th 90 ° of electric bridge, bridging plug,
First 45 ° of phase shift matrix of automatically controlled restructural, second 45 ° of phase shift matrix of automatically controlled restructural, switch matrix, first
Biasing circuit and the second biasing circuit；In four ports of the one 90 ° of electric bridge, it is positioned at the two of the same side, lower section
Individual port is as the first input end of feeding network and the second input, in two ports of side above,
The input of left side port and first automatically controlled 45 ° of phase shift matrix of restructural is connected, and right side port is connected with bridging
The lower left first input end of device is connected；In four ports of the 3rd 90 ° of electric bridge, the same side above
Two ports as the first outfan of feeding network and the second outfan, be positioned at two ends of side, lower section
In Kou, the outfan of left side port and first automatically controlled 45 ° of phase shift matrix of restructural be connected, right side port with across
Upper left second outfan of connecting connector is connected；In four ports of the 2nd 90 ° of electric bridge, it is positioned at lower section
Two ports of the same side as the 3rd input and four-input terminal of feeding network, side above
In two ports, the input of right side port and second automatically controlled 45 ° of phase shift matrix of restructural is connected, left-hand end
Mouth is connected with lower right second input of bridging plug；In four ports of the 4th 90 ° of electric bridge, position
Two ports in the same side, top, as the 3rd outfan of feeding network and the 4th outfan, are positioned at lower section
In two ports of side, the outfan of right side port and second automatically controlled 45 ° of phase shift matrix of restructural is connected,
Left side port is connected with upper right first outfan of bridging plug；Described bridging plug by across
Connecing the signal that will be fed into first input end to be exported by the first outfan, the signal that will be fed into the second input leads to
Cross the second outfan output；Described the one 90 ° of electric bridge, the 2nd 90 ° of electric bridge, the 3rd 90 ° of electric bridge, the 4th
90 ° of electric bridges have identical dual-band characteristic, and described bridging plug has dual-band characteristic and two work frequencies
Carry identical with the one 90 ° of electric bridge；Described first 45 ° of phase shift matrix of automatically controlled restructural, the second automatically controlled restructural
45 ° of phase shift matrix have identical dual-band characteristic, and at two working frequency range center frequencies of the one 90 ° of electric bridge
Gating can be realized on Dian respectively, and the phase-shift phase in two corresponding working frequency range center frequency point is 45 °；
Described switch matrix is the control unit of offset signal, and the offset signal of switch matrix is inclined by first respectively
Circuits is delivered to first 45 ° of phase shift matrix of automatically controlled restructural and is controlled first 45 ° of phase shift matrix works of automatically controlled restructural
The frequency range made, delivering to second 45 ° of phase shift matrix of automatically controlled restructural by the second biasing circuit, to control second automatically controlled
The frequency range of 45 ° of phase shift matrix work of restructural.
First described 45 ° of phase shift matrix of automatically controlled restructural and the knot of second automatically controlled 45 ° of phase shift matrix of restructural
Structure is identical, and the microstrip line by two different lengths forms, the electrical length of two microstrip lines the most corresponding first
/ 8th wavelength of two working frequency range center frequency point of 90 ° of electric bridges.
Described bridging plug is double frequency-band bridging plug, and signal transmssion line therein all uses microstrip line
Form realizes.
The one 90 ° of described electric bridge, the 2nd 90 ° of electric bridge, the 3rd 90 ° of electric bridge, the structure of the 4th 90 ° of electric bridge
Identical, it is 90 ° of electric bridges of double frequency-band, signal transmssion line therein all uses microstrip line form to realize.
Present invention advantage compared with prior art is:
1) the automatically controlled reconfigurable butler matrix feed network of double frequency of the present invention can be taken up an official post at two working bands
Meaning gating does not interfere with each other between work, and two working bands；
2) 90 ° of electric bridges in the present invention are double frequency-band device, are simultaneously operable at two frequency bands, and two frequency bands
Between have preferable isolation；
3) bridging plug of the present invention uses dual band designs, is simultaneously operable at two frequency bands, and two frequencies
Interband isolation is high；
4) 45 ° of phase shift matrix structures of automatically controlled restructural that the present invention uses, can appoint easily between two frequency bands
Meaning gating；
5) present invention uses switch matrix to be uniformly controlled the gating of working band, have switch speed fast,
The features such as easy operation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention automatically controlled restructural butler matrix feed network；
Fig. 2 is automatically controlled restructural butler matrix feed network top structure schematic diagram in the embodiment of the present invention；
Fig. 3 is automatically controlled restructural butler matrix feed network polycrystalline substance schematic diagram in the embodiment of the present invention；
Fig. 4 is automatically controlled restructural butler matrix feed network side view in the embodiment of the present invention；
Fig. 5 is 90 ° of electric bridge schematic diagrams in the embodiment of the present invention；
Fig. 6 is bridging plug schematic diagram in the embodiment of the present invention；
Fig. 7 is to gate when 2.5GHz in the embodiment of the present invention, pumping signal by during p1 feed-in port insert
Damage characteristic；
Fig. 8 is to gate when 5.2GHz in the embodiment of the present invention, pumping signal by during p1 feed-in port insert
Damage characteristic；
Fig. 9 is to gate when 2.5GHz in the embodiment of the present invention, pumping signal by during p2 feed-in port insert
Damage characteristic；
Figure 10 is to gate when 5.2GHz in the embodiment of the present invention, and pumping signal is by port during p2 feed-in
Insertion Loss characteristic.
Detailed description of the invention
The double frequency automatically controlled restructural butler matrix feed network of the present invention, by having 90 ° of dual-band characteristic
Electric bridge, bridging plug and 45 ° of phase shift matrix of automatically controlled restructural are constituted.By switch matrix gate automatically controlled can
Reconstruct phase shift matrix is operated in 45 ° of transmission lines of different frequency range, thus controls feeding network and be operated in difference
Frequency under.
As it is shown in figure 1, butler matrix feed network of the present invention specifically includes that four inputs p1, p2,
P3 and p4, four output end p 5, p6, p7 and p8,90 ° of electric bridges, 2,90 ° of electric bridges 3 of 1,90 ° of electric bridges,
90 ° of electric bridges 4, bridging plug 5,45 ° of phase shift matrix 6 of automatically controlled restructural, 45 ° of phase shift squares of automatically controlled restructural
Battle array 7, switch matrix 8, biasing circuit 9 and biasing circuit 10.
5. the port of 90 ° of electric bridges 1 1. port with automatically controlled 45 ° of phase shift matrix 6 of restructural is connected, 90 ° of electric bridges
8. the port of 2 4. port with automatically controlled 45 ° of phase shift matrix 7 of restructural is connected.The port of 90 ° of electric bridges 3With
9. the port of automatically controlled 45 ° of phase shift matrix 6 of restructural connects, the port of 90 ° of electric bridges 4With automatically controlled restructural
The port of 45 ° of phase shift matrix 7Connect.2. the port of bridging plug 5 6. port with 90 ° of electric bridges 1 connects
Connecing, 3. the port of bridging plug 5 7. port with 90 ° of electric bridges 2 is connected, and the port of bridging plug 5 is 10.
Port with 90 ° of electric bridges 3Connect, the port of bridging plug 5Port with 90 ° of electric bridges 4Even
Connect.
Further, 1,90 ° of electric bridges of 90 ° of electric bridges, 3,90 ° of electric bridge 4 structures of 2,90 ° of electric bridges are identical, all
For 90 ° of electric bridges of 3dB, all can work on two bands.As a example by 90 ° of electric bridges 1, if signal is by port
P1 input, then port 1 and port 2 on two working frequency range all output have constant amplitude, the two of phase quadrature
Road signal, port p2 isolates；If signal is inputted by port p2, then port 1 and port 2 are two work
In frequency range, all output has the two paths of signals of constant amplitude, phase quadrature, and port p2 isolates；If signal is by port 1
Input, then port p1 and port p2 on two working frequency range all output have constant amplitude, the two of phase quadrature
Road signal, port 2 is isolated；If signal is inputted by port 2, then port p1 and port p2 is two work
In frequency range, all output has the two paths of signals of constant amplitude, phase quadrature, and port 1 is isolated.
Further, bridging plug 5 has dual-band characteristic, and it can realize swashing in two frequency ranges simultaneously
Encourage that signal is come in and gone out by port 6, port 11 exports, port 7 and the output of port 10 no signal.Also can be simultaneously
Realize that pumping signal is come in and gone out by port 7, port 10 exports, port 6 and the output of port 11 no signal.This
Outward, two frequency bands of bridging plug 5 work and two frequency bands of 90 ° of electric bridge 1 work are identical.
Further, 45 ° of phase shift matrix 6 of automatically controlled restructural and 45 ° of phase shift matrix 7 structures of automatically controlled restructural
Identical, in two working frequency range center frequency point of corresponding 90 ° of electric bridges 1, described 45 ° of phase shifts of automatically controlled restructural
Matrix 6 can realize gating characteristics respectively, and the phase-shift phase in two corresponding working frequency range center frequency point is equal
It it is 45 °.45 ° of phase shift matrix 7 of described automatically controlled restructural also can be at two working frequency range of corresponding 90 ° of electric bridges 1
Gating characteristics, and the phase-shift phase in two corresponding working frequency range center frequency point is realized respectively in center frequency point
Also 45 ° it are.Additionally, 45 ° of phase shift matrix 6 of automatically controlled restructural and 45 ° of phase shift matrix 6 of automatically controlled restructural must
Must gate in the center frequency point of same working frequency range.
Further, switch matrix 8 is the control unit of offset signal, and inside comprises organizes gate-controlled switch more,
Control the break-make of gate-controlled switch according to demand so that it is have and optionally apply offset signal to biasing circuit
Function.The offset signal of switch matrix 8 is the most automatically controlled by biasing circuit 9 and biasing circuit 10 transmission respectively
45 ° of phase shift matrix 6 of restructural and 45 ° of phase shift matrix 7 of automatically controlled restructural.Switch matrix 8 same partially
Under confidence number controls, 45 ° of phase shift matrix 6 of automatically controlled restructural and 45 ° of phase shift matrix 7 of automatically controlled restructural are simultaneously
Gating is at the center frequency point of same working frequency range, and produces the phase shift of 45 °.
Further, when each input port is encouraged, first pass through control automatically controlled restructural 45 °
Phase shift matrix, gating is in required operating frequency, and signal energy will be delivered to output port with the quartering,
And constant phase contrast can be produced between adjacent output port, but when different input port excitation, output
The phase contrast of port signal is different.So encourage different input ports, different phase contrasts can be obtained,
The wave beam can being differently directed during excitation array antenna.
Embodiment
Assume that the double frequency automatically controlled restructural butler matrix feed network of the present invention can be at 2.5GHz, 5.2GHz
Any switching laws in two operating frequencies, and use the form of printed circuit board to realize.
As shown in Figure 2, Figure 3, Figure 4, medium substrate 11 respectively metal from top to bottom covers copper top layer, Jie
Matter layer, metal cover copper middle level, dielectric layer and metal and cover copper substrate.The dielectric constant of dielectric layer elects 2.65 as,
Thickness is 1mm.Metal covers copper top layer places 1,90 ° of electric bridges of 90 ° of electric bridges, 3,90 ° of electric bridges of 2,90 ° of electric bridges
4, bridging plug 5,45 ° of phase shift matrix 6 of automatically controlled restructural, 45 ° of phase shift matrix 7 of automatically controlled restructural.Gold
Belonging to and cover copper substrate installation switch matrix 8, biasing circuit passes through metal column a1-b1, a2-b2, a3-b3 respectively,
Metal is covered the biasing connecting line of copper top layer and covers the biasing connecting line of copper substrate with metal and be connected by a4-b4, and
A diameter of 1mm of metal column.Earth lead 12 is connected to metal by metallization via a5 and covers copper middle level,
A diameter of 1.5mm of metallization via.
45 ° of phase shift matrix 7 structures of 45 ° of phase shift matrix 6 of above-mentioned automatically controlled restructural and automatically controlled restructural are identical,
Microstrip line by two different lengths forms.Microstrip line longer in 45 ° of phase shift matrix 6 of automatically controlled restructural
Connected by switching diode v1, v2 and 1,90 ° of electric bridges 3 of 90 ° of electric bridges, 45 ° of phase shift squares of automatically controlled restructural
Microstrip line shorter in battle array 6 is connected by switching diode v3, v4 and 1,90 ° of electric bridges 3 of 90 ° of electric bridges,
Microstrip line longer in 45 ° of phase shift matrix 7 of automatically controlled restructural passes through switching diode v5, v6 and 90 ° of electric bridges
2,90 ° of electric bridges 4 connect, and microstrip line shorter in 45 ° of phase shift matrix 7 of automatically controlled restructural is by switching two poles
Pipe v7, v8 and 2,90 ° of electric bridges 4 of 90 ° of electric bridges connect.Article two, the most corresponding 90 ° of the electrical length of microstrip line
/ 8th wavelength of two working frequency range center frequency point of electric bridge 1, can be respectively formed on 45 ° at two frequency bins
Phase shift.On biasing circuit, increase bias voltage by switch matrix 8, gate 45 ° of phases of automatically controlled restructural
Move microstrip line longer in matrix 6 and in 45 ° of phase shift matrix 7 of automatically controlled restructural to gate with input/output port,
Butler matrix feed network can be made to be operated in 2.5GHz.Increased on biasing circuit by switch matrix 8
It is biased voltage, gates in 45 ° of phase shift matrix 6 of automatically controlled restructural and 45 ° of phase shift matrix 7 of automatically controlled restructural
Shorter microstrip line gates with input/output port, and butler matrix feed network can be made to be operated in
5.2GHz。
1,90 ° of electric bridges of 90 ° of electric bridges, 3,90 ° of electric bridge 4 structures of 2,90 ° of electric bridges are identical, are double frequency-band 90 °
Electric bridge.As it is shown in figure 5,90 ° of electric bridges of double frequency-band are by four input and output transmission lines 111, two transmission lines
112, two transmission lines 113, four minor matters loaded transmission line 114 and four fan shaped transmission line structures 115
Composition.Above-mentioned transmission line all uses microstrip line form to realize.Described transmission 112 and transmission 113 all use curved
Meander line structure, can effectively reduce size.
Bridging plug 5 is double frequency-band bridging plug, and two frequency bands and 90 ° of electric bridges 1 of its work are identical.
As shown in Figure 6, double frequency-band bridging plug includes four input and output transmission lines 121, two transmission lines 122,
Two transmission lines 123, a transmission lines 124, four end minor matters loaded transmission line 125, two minor matters add
Carrying transmission line 126, four fan shaped transmission line structures 127 and two fan shaped transmission line structures 128 form.On
Stating transmission line all uses microstrip line form to realize.Described transmission line 122, transmission line 123 and transmission line 124
All use folding line structure, can effectively reduce size.
Emulating the double frequency automatically controlled restructural butler matrix feed network of the present invention, Fig. 7 is transmission network
Network gates when 2.5GHz, and pumping signal is by output port p5, p6, p7 and p8 during p1 port feed-in
Insertion Loss characteristic.As it can be seen, the amplitude coincidence at 2.5GHz is preferable, meet the requirement of signal decile.
Fig. 8 is that feeding network gates when 5.2GHz, pumping signal by output port p5 during p1 port feed-in,
The Insertion Loss characteristic of p6, p7 and p8.As it can be seen, amplitude coincidence meets decile requirement at 5.2GHz.
Table 1 give pumping signal by output port p5, p6, the p7 under different frequency during p1 port feed-in and
The phase characteristic of p8, when feeding network gating is at 2.5GHz, phase contrast concordance≤3 ° at 2.5GHz,
And the phase contrast at 5.2GHz is not fixed.When feeding network gating is at 5.2GHz, at 2.5GHz
Amplitude difference difference is fixed, and at 5.2GHz phase contrast≤3 °.
Table 1 gates the output port phase characteristic when 2.5GHz
Fig. 9 is that feeding network gates when 2.5GHz, and pumping signal is by output port during p2 port feed-in
The Insertion Loss characteristic of p5, p6, p7 and p8.As it can be seen, the amplitude coincidence at 2.5GHz is preferable, full
The requirement of foot signal decile.Figure 10 is that feeding network gates when 5.2GHz, and pumping signal is by p2 port
The Insertion Loss characteristic of output port p5, p6, p7 and p8 during feed-in.As it can be seen, at 5.2GHz amplitude
Concordance meets decile requirement.Table 2 gives defeated by under different frequency during p2 port feed-in of pumping signal
Go out the phase characteristic of port p5, p6, p7 and p8, when feeding network gating is at 2.5GHz, 2.5GHz
Phase contrast concordance≤3 ° at place, and the phase contrast at 5.2GHz is not fixed.When feeding network gating exists
During 5.2GHz, the amplitude difference difference at 2.5GHz is fixed, and at 5.2GHz phase contrast≤3 °.
Table 2 gates the output port phase characteristic when 5.2GHz
The double frequency automatically controlled restructural butler matrix feed network of the present invention is not only restricted to concrete operating frequency
On, such as can in two operating frequencies of 2.5GHz, 5.2GHz any switching laws.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (4)
1. a double frequency automatically controlled restructural butler matrix feed network, it is characterised in that including: the one 90 °
Electric bridge (1), the 2nd 90 ° of electric bridge (2), the 3rd 90 ° of electric bridge (3), the 4th 90 ° of electric bridge (4), bridging are even
Connect device (5), 45 ° of phase shift matrix (6) of the first automatically controlled restructural, second 45 ° of phase shift matrix of automatically controlled restructural
(7), switch matrix (8), the first biasing circuit (9) and the second biasing circuit (10)；One 90 ° of electricity
In four ports of bridge (1), it is positioned at two ports first input end as feeding network of the same side, lower section
With the second input, in two ports of side above, left side port and the first automatically controlled restructural 45 °
The input of phase shift matrix (6) is connected, and right side port is defeated with the lower left first of bridging plug (5)
Enter end to be connected；In four ports of the 3rd 90 ° of electric bridge (3), two port conducts of the same side above
First outfan of feeding network and the second outfan, be positioned in two ports of side, lower section, left side port
It is connected with the outfan of first 45 ° of phase shift matrix (6) of automatically controlled restructural, right side port and bridging plug (5)
Upper left the second outfan be connected；In four ports of the 2nd 90 ° of electric bridge (2), it is positioned at lower section same
Two ports of side are as the 3rd input and four-input terminal of feeding network, two of side above
In port, the input of right side port and second 45 ° of phase shift matrix (7) of automatically controlled restructural is connected, left-hand end
Mouth is connected with lower right second input of bridging plug (5)；Four of 4th 90 ° of electric bridge (4)
In port, two ports of the same side above as the 3rd outfan of feeding network and the 4th outfan,
It is positioned in two ports of side, lower section, right side port and second 45 ° of phase shift matrix (7) of automatically controlled restructural
Outfan is connected, and left side port is connected with upper right first outfan of bridging plug (5)；Described
The signal that bridging plug (5) will be fed into first input end by bridging is exported by the first outfan, will send
The signal entering the second input is exported by the second outfan；Described the one 90 ° of electric bridge (1), the 2nd 90 °
Electric bridge (2), the 3rd 90 ° of electric bridge (3), the 4th 90 ° of electric bridge (4) have identical dual-band characteristic, institute
State bridging plug (5) and there are dual-band characteristic and two working bands and the one 90 ° of electric bridge (1) is identical；
Described 45 ° of phase shift matrix (6) of the first automatically controlled restructural, 45 ° of phase shift matrix (7) of the second automatically controlled restructural
There is identical dual-band characteristic, and can in two working frequency range center frequency point of the one 90 ° of electric bridge (1)
Realize gating respectively, and the phase-shift phase in two corresponding working frequency range center frequency point is 45 °；Described
Switch matrix (8) be the control unit of offset signal, the offset signal of switch matrix (8) is passed through respectively
It is automatically controlled heavily that first biasing circuit (9) delivers to 45 ° of phase shift matrix (6) controls first of the first automatically controlled restructural
The frequency range that 45 ° of phase shift matrix (6) of structure work, by the second biasing circuit (10) deliver to second automatically controlled weigh
45 ° of phase shift matrix (7) of structure control the frequency range that 45 ° of phase shift matrix (7) of the second automatically controlled restructural work.
A kind of double frequency automatically controlled restructural butler matrix feed network the most according to claim 1, its
It is characterised by: described 45 ° of phase shift matrix (6) of the first automatically controlled restructural and second 45 ° of phases of automatically controlled restructural
The structure moving matrix (7) is identical, and the microstrip line by two different lengths forms, and the electricity of two microstrip lines is long
/ 8th wavelength of two working frequency range center frequency point of the most corresponding one 90 ° of electric bridge (1) of degree.
A kind of double frequency automatically controlled restructural butler matrix feed network the most according to claim 1 and 2,
It is characterized in that: described bridging plug (5) is double frequency-band bridging plug, signal transmssion line therein
Microstrip line form is all used to realize.
A kind of double frequency automatically controlled restructural butler matrix feed network the most according to claim 1 and 2,
It is characterized in that: described the one 90 ° of electric bridge (1), the 2nd 90 ° of electric bridge (2), the 3rd 90 ° of electric bridge (3),
The structure of the 4th 90 ° of electric bridge (4) is identical, is 90 ° of electric bridges of double frequency-band, and signal transmssion line therein is all adopted
Realize by microstrip line form.
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| CN108306110A (en) * | 2017-12-14 | 2018-07-20 | 富华科精密工业（深圳）有限公司 | Butler matrix structure and electronic device with the Butler matrix structure |
| CN111385007A (en) * | 2018-12-27 | 2020-07-07 | 财团法人工业技术研究院 | Dual-frequency beam generator |
| CN113036436A (en) * | 2021-03-02 | 2021-06-25 | 电子科技大学 | Miniaturized reconfigurable beam forming network architecture |
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| CN108306110A (en) * | 2017-12-14 | 2018-07-20 | 富华科精密工业（深圳）有限公司 | Butler matrix structure and electronic device with the Butler matrix structure |
| CN108306110B (en) * | 2017-12-14 | 2019-07-26 | 富华科精密工业（深圳）有限公司 | Butler matrix structure and electronic device with the Butler matrix structure |
| CN111385007A (en) * | 2018-12-27 | 2020-07-07 | 财团法人工业技术研究院 | Dual-frequency beam generator |
| CN113036436A (en) * | 2021-03-02 | 2021-06-25 | 电子科技大学 | Miniaturized reconfigurable beam forming network architecture |
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