CN103748739B - A kind of directional coupler and antenna - Google Patents
A kind of directional coupler and antenna Download PDFInfo
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- CN103748739B CN103748739B CN201380002249.XA CN201380002249A CN103748739B CN 103748739 B CN103748739 B CN 103748739B CN 201380002249 A CN201380002249 A CN 201380002249A CN 103748739 B CN103748739 B CN 103748739B
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Abstract
The open a kind of directional coupler of the embodiment of the present invention and antenna, described directional coupler includes: floor, two microstripline plates and two dielectric-slabs, and said two dielectric-slab is respectively arranged between floor and said two microstripline plate；Wherein, said two microstripline plate is electrically connected to each other, and each microstripline plate in said two microstripline plate includes two input interfaces that the second electric bridge that the first electric bridge electrically connects electrically connects with described first electric bridge and two output interfaces electrically connected with described second electric bridge with described first electric bridge.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of directional coupler and antenna.
Background technology
Directional coupler is a kind of general microwave or millimeter wave component, is used for input signal according to certain power ratio
Example relation is allocated.Directional coupler is widely used in, in the middle of various microwave circuit, can serve as power divider, is used for believing
Number isolation, separate and mixing etc..
Existing directional coupler generally includes floor, dielectric-slab and microstripline plate, and described dielectric-slab is arranged at floor
And between described microstripline plate.Microstripline plate includes main line and the by-pass intercoupled with main line.Have transmission signal from
When one end of described main line inputs described main line, Partial Power exports from the other end of described main line, due to main line and by-pass it
Between intercouple, the power section transmitted in main line can be coupled to by-pass, and make power propagate in by-pass to have
Directionality, i.e. makes one end i.e. coupled end of described by-pass have power to export, and the i.e. isolation end no signal of the other end exports, thus complete
Become input signal to be allocated according to certain power proportions relation.
Described microstripline plate generally uses Butler matrix structure.When described microstripline plate uses matrix structure,
Relatively, for adapting to the size of described microstripline plate, the size on described dielectric-slab and floor is required to increase, thus causes institute
The lateral dimension stating directional coupler is relatively big, and the space taken is bigger, it is difficult to meet undersized requirement.
Summary of the invention
The embodiment of the present invention provides a kind of directional coupler and antenna, solves in prior art at described microstripline plate
When using matrix structure, the size on described dielectric-slab and floor all increases and causes the lateral dimension of described directional coupler relatively
Greatly, the space taken is bigger, it is difficult to meet the technical problem of undersized requirement.
Embodiment of the present invention first aspect provides a kind of directional coupler, and described directional coupler includes: floor, two micro-
Band wiring board and two dielectric-slabs, said two dielectric-slab is respectively arranged between floor and said two microstripline plate；Its
In, said two microstripline plate is electrically connected to each other, and each microstripline plate in said two microstripline plate includes first
Two input interfaces that the second electric bridge that electric bridge electrically connects with described first electric bridge electrically connects with described first electric bridge and with institute
State two output interfaces of the second electric bridge electrical connection.
In the first possible implementation of first aspect, described first electric bridge and described second electric bridge are second order electricity
Bridge.
In conjunction with first aspect, the first possible implementation of first aspect, in the reality that first aspect the second is possible
In existing mode, the first electric bridge of a microstripline plate in said two microstripline plate and the second electric bridge respectively with another
Second electric bridge of microstripline plate and the electrical connection of the first electric bridge.
In conjunction with the implementation that the first or the second of first aspect, first aspect are possible, in first aspect the 3rd
Planting in possible implementation, each electric bridge includes four ports；First port of described first electric bridge and the second port and institute
Stating two input interface electrical connections, the 3rd port electrically connects with the first port of the second electric bridge on same microstripline plate,
4th port electrically connects with the second port of the second electric bridge on another one microstripline plate；Second end of described second electric bridge
Mouth electrically connects with the 4th port of the first electric bridge on another one microstripline plate, the 3rd port and the 4th port and described two
Individual output interface electrically connects；
Described first electric bridge and described second electric bridge are identical second order electric bridge, described second order electric bridge include main line, by-pass,
Connecting main line and three branch lines of by-pass, described main line and a length of λ/2 of described by-pass, described three branch lines connect respectively
Connect described main line and the both ends of described by-pass and described main line and described by-pass length 1/2 at, wherein, λ is wavelength.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect,
Described main line and described by-pass are meander-shaped, and symmetrical relative to the centrage between described main line and described by-pass.
In conjunction with the 4th kind of possible implementation of first aspect, in the 5th kind of possible implementation of first aspect,
Described second order electric bridge is symmetrical relative to the 3rd branch line connected in described branch line at the 1/2 of described main line and described by-pass.
In conjunction with the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation of first aspect,
Described main line includes the Part II that Part I is connected with described Part I and described 3rd branch line, described first
Divide and include that one end is micro-with described first segment master with the main microstrip line of first segment that an interface in said two input interface is connected
The main microstrip line of band wire second section connected vertically microstrip line main with described second section is connected and Section of vertical three main microstrip line,
It is connected with described Section of three main microstrip line and Section of vertical four main microstrip line is connected and vertical with described Section of four main microstrip line
And Section of five main microstrip line that microstrip line main with described first segment is located along the same line.
In conjunction with first aspect, first aspect the first to any one possible implementation in the 6th kind, in first party
In the possible implementation in the 7th kind of face, described directional coupler also includes metal case, described floor, said two microstrip line
Road plate and said two dielectric-slab are packaged in described metal case.
In conjunction with first aspect, first aspect the first to any one possible implementation in the 7th kind, in first party
In the possible implementation in the 8th kind of face, said two dielectric-slab and floor offer and is easy to said two microstripline plate electricity
The via connected, arranges the insulant preventing said two microstripline plate with the conducting of described floor in described via.
Embodiment of the present invention second aspect provides a kind of antenna, and described antenna includes: described directional coupler and four row
Antenna oscillator, four outputs of two microstripline plates that described four array antenna oscillators connect described directional coupler respectively connect
Mouthful.
The embodiment of the present invention third aspect provides a kind of antenna, and described antenna includes: described directional coupler, at least four
Individual electric bridge and at least eight array antenna oscillators, each electric bridge of described at least four electric bridge includes two input interfaces and two outputs
Interface, one of them input interfaces of two input interfaces of described each electric bridge connects in said two directional coupler one
One output interface of directional coupler, another input interface of two input interfaces of described each electric bridge connects described two
An output interface of another bonder in individual directional coupler；Described at least eight array antenna oscillators connect respectively described at least
Eight output interfaces of four electric bridges.
The embodiment of the present invention has the beneficial effect that:
The application is by arranging two dielectric-slabs in the opposite sides on floor, and is respectively provided with on said two dielectric-slab
The microstripline plate that two are electrically connected to each other, thus realize described microstripline plate is set to upper and lower two-layer, described micro-to reduce
The horizontal space taken with wiring board, reduces described directional coupler size in a lateral direction, so that described orientation
Bonder is on the basis of can completing the function of microstripline plate of matrix structure, it is possible to realizes size and reduces, solves existing
In technology described microstripline plate use matrix structure time, the size on described dielectric-slab and floor all increase and cause described fixed
Relatively big to the lateral dimension of bonder, the space taken is bigger, it is difficult to meet the technical problem of undersized requirement, reaches to reduce
The size of described directional coupler, the undersized growth requirement of the most described directional coupler.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
The accompanying drawing used required in is briefly described, it should be apparent that, the accompanying drawing in describing below is only some of the present invention
Embodiment.
The generalized section of the directional coupler that Fig. 1 provides for the embodiment of the present invention；
The structural representation of the first microstrip structure of the directional coupler that Fig. 2 provides for the embodiment of the present invention；
The structural representation of the second microstrip structure of the directional coupler that Fig. 3 provides for the embodiment of the present invention；
Fig. 4 for the embodiment of the present invention provide an input port of directional coupler have an input signal time isolation frequency
Set a song to music line chart；
Fig. 5 for the embodiment of the present invention provide an input port of directional coupler have an input signal time degree of coupling frequency
Set a song to music line chart；
The annexation schematic diagram of the antenna that Fig. 6 provides for another embodiment of the present invention；
The annexation schematic diagram of the antenna that Fig. 7 provides for further embodiment of this invention.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with in the embodiment of the present invention
Accompanying drawing, is clearly and completely described the technical scheme in the embodiment of the present invention.Obviously, described embodiment is only
The embodiment of a present invention part rather than whole embodiments.
Embodiment one
As it is shown in figure 1, the generalized section of the directional coupler 100 provided for the embodiment of the present invention.Described directional couple
Device 100 can serve as power divider, for signal isolation, separate and mixing etc..Described directional coupler 100 includes floor
10,21,22 and two dielectric-slabs 31,32 of two microstripline plates.
Floor 10 can be metallic plate, can be selected for electric conductivity preferably metallic plate, such as aluminium sheet, copper coin etc..
Please refer to Fig. 2 and Fig. 3, two microstripline plates 21 and 22 are electrically connected to each other, mutually can carry out signal
Transmission.Each microstripline plate in said two microstripline plate 21,22 includes first electric bridge the 201, second electric bridge 202, two
203,204 and two output interfaces 205,206 of individual input interface.Described first electric bridge 201 is electrically connected with described second electric bridge 202
Connecing, said two input interface 203 and 204 electrically connects with described first electric bridge 201, said two output interface 205 and 206 with
Described second electric bridge 202 electrically connects.Specifically, described microstripline plate 21 and 22 is electrically connected to each other by wire.
Two dielectric-slabs 31,32 are made up of insulant.Preferably, two dielectric-slabs 21,22 can be polyfluortetraethylene plate,
Or it is the dielectric-slab of 2.1 for relative dielectric constant.Described dielectric-slab 31 be arranged at floor 10 and described microstripline plate 21 it
Between, described dielectric-slab 32 is arranged between described floor 10 and described microstripline plate 22.Connect described microstripline plate 21 He
The wire of 22 can be around described floor 10 and said two dielectric-slab 31,32, or through being opened in described floor 10 and described
The hole offered on two dielectric-slabs 31,32 is to connect said two microstripline plate 21 and 22.
When the input interface 203 or 204 of described microstripline plate 21 has input signal, described signal passes through microstripline
First electric bridge 201 of plate 21 passes to the second electric bridge 202 of described microstripline plate 21 and the second electricity of described microstripline 22
Bridge 202, thus export from the output interface 205 and 206 of described microstripline plate 21 and 22；Defeated at described microstripline plate 22
When incoming interface 203 or 204 has input signal, described signal passes to the of described microstripline plate 22 by the first electric bridge 201
Two electric bridges 202 and the second electric bridge 202 of described microstripline 21, thus from the output interface of described microstripline plate 21 and 22
205 and 206 outputs.It is to say, when the input interface 203 or 204 of described microstripline plate 21 or 22 has signal to input, institute
The output interface 205 and 206 stating microstripline plate 21 and 22 all has signal to export.
The application is by arranging two dielectric-slabs 31,32 in the opposite sides on floor 10, and at said two dielectric-slab 31
It is respectively provided with the two microstripline plates 21 and 22 being electrically connected to each other on 32, thus realizes being set to described microstripline plate
Lower two-layer, reducing the horizontal space that described microstripline plate takies, reduces described directional coupler 100 in a lateral direction
Size, so that described directional coupler 100 is on the basis of can completing the function of microstripline plate of matrix structure, it is possible to
Realize size to reduce, solve in prior art when described microstripline plate uses matrix structure, described dielectric-slab and floor
Size all increase and cause the lateral dimension of described directional coupler relatively big, the space taken is bigger, it is difficult to meet small size
The technical problem of requirement, reach to reduce the size of described directional coupler 100, the most described directional coupler 100 small size
Growth requirement.
In a specific embodiment, described directional coupler 100 also includes metal case 40, described floor 10, described two
Microstripline plate 21,22 and described two dielectric-slabs 31,32 are packaged in described metal case 40.By arranging the described floor of encapsulation
10, described two microstripline plates 21,22 and the metal case 40 of described two dielectric-slabs 31,32, to promote described directional coupler
The Electro Magnetic Compatibility of 100, reduces described directional coupler 100 and other equipment is produced electromagnetic interference.
In a specific embodiment, described two dielectric-slabs 31,32 and floor 10 offer it is easy to described two microstriplines
The via 50 of plate 21,22 electrical connection, arranges in described via 50 and prevents described two microstripline plates 21,22 and described floor
The insulant of 10 conductings.That is, the connecting line between described two microstripline plates 21 and 22 connects institute through described via 50
State two microstripline plates 21 and 22, and make to insulate between described connecting line and described floor 10 by described insulant.
In a specific embodiment, described first electric bridge 201 and described second electric bridge 202 are second order electric bridge.By inciting somebody to action
Described first electric bridge 201 and the second electric bridge 202 are set to second order electric bridge, thus increase the work frequency of described directional coupler 100
Bandwidth.
In a specific embodiment, the first electric bridge of a microstripline plate in described two microstripline plates 21 and 22
201 and second electric bridge 202 electrically connect with the second electric bridge 202 and first electric bridge 201 of another microstripline plate respectively, with realize
Two microstripline plate 21 and 22 electrical connections.That is, the second electric bridge of the first electric bridge 201 of microstripline plate 21 and microstripline plate 22
202 electrical connections, the second electric bridge 202 of microstripline plate 21 is connected with the first electric bridge 201 of microstripline plate 22, thus in micro-strip
When the input interface 203 or 204 of wiring board 21 has signal to input, it is possible to be transferred to microstripline plate 22 by the first electric bridge 201
The second electric bridge 202 so that two output interfaces 205 and 206 of described microstripline plate 22 have signal to export；Described micro-
When input interface 203 or 204 with wiring board 22 has signal to input, it is possible to be transferred to microstrip line by described first electric bridge 201
Second electric bridge 202 of road plate 21, so that two output interfaces 205 and 206 of described microstripline plate 21 have signal to export.
In the present embodiment, the first electric bridge 201 and the second electric bridge 202, the most each electric bridge includes four ports.Described
First port 211 of one electric bridge 201 and the second port 221 electrically connect with said two input interface 203 and 204, the 3rd port
231 electrically connect with the first port 212 of the second electric bridge 202 on same microstripline plate, the 4th port 241 and another one
Second port 222 of the second electric bridge 202 on microstripline plate electrically connects；Second port 222 of described second electric bridge 202 is with another
4th port 241 of the first electric bridge 201 on an outer microstripline plate electrically connects, the 3rd port 232 and the 4th port 242 with
Said two output interface 205 and 206 electrically connects.
It is to say, the first port 211 of the first electric bridge 201 of microstripline plate 21 and the second port 221 respectively with institute
State two input interfaces 203 and 204 electrical connection, the first end of the second electric bridge 202 on the 3rd port 231 and microstripline plate 21
Mouth 212 electrical connection, the 4th port 241 electrically connects with the second port 222 of the second electric bridge 202 of microstripline plate 22；Microstrip line
Second port 222 of the second electric bridge 202 on road plate 21 is with the 4th port 241 of the first electric bridge 201 of microstripline plate 22 even
Connecing, the 3rd port 232 and the 4th port 242 are connected with two output interfaces 205 and 206；First electric bridge 201 of microstripline plate 22
The first port 211 and the second port 221 electrically connect with said two input interface 203 and 204 respectively, the 3rd port 231 with
First port 212 of the second electric bridge 202 on microstripline plate 22 electrically connects；On microstripline plate 22 the of second electric bridge 202
Three ports 232 and the 4th port 242 are connected with two output interfaces 205 and 206.
Further, described first electric bridge 201 is identical second order electric bridge with described second electric bridge 202, described second order electricity
Bridge, i.e. described first electric bridge 201 and described second electric bridge 202 include main line 41, by-pass 42 respectively, connect main line 41 and by-pass
Three branch lines 43,44,45 of 42, described main line 41 and a length of λ/2 of described by-pass 42, described three branch lines 43,44,
The 1/2 of 45 length connecting described main line 41 and the both ends of described by-pass 42 and described main line 41 and described by-pass 42 respectively
Place, wherein, λ is wavelength.That is, the first branch line 43 and second branch line 44 of described three branch lines connects described main line respectively
41 and the both ends of described by-pass 42, the 3rd branch line 45 of described three articles of branch lines connects described main line 41 and described by-pass 42
Pars intermedia.
Further, described main line 41 and described by-pass 42 are meander-shaped, and relative to described main line 41 and described pair
Centrage between line 42 is symmetrical.By described main line 41 and described by-pass 42 are set to meander-shaped, to reduce described electricity
The size of bridge, thus reduce the size of described directional coupler, the development of the most described directional coupler miniaturization.
Further, described second order electric bridge, i.e. described first electric bridge 201 and described second electric bridge 202 are relative to described point
Branch line connects the 3rd branch line 45 at the 1/2 of described main line 41 and described by-pass 42 symmetrical.
Further, described main line 41 includes Part I 411 and described Part I 411 and described 3rd branch line
45 Part II 412 connected, described Part I 411 includes one end and in said two input interface 205 and 206
First segment main microstrip line AB microstrip line main with the described first segment AB second section connected vertically master that input interface 205 connects is micro-
Band wire BC microstrip line main with described second section BC is connected and Section of vertical three main microstrip line CD and described Section of three main micro-strip
Line CD connects and Section of four vertical main microstrip line DE is connected with described Section of four main microstrip line DE and vertical and with described first
Save Section of five main microstrip line EF that main microstrip line AB is located along the same line.Because between described main line 41 and described by-pass 42
Centrage is symmetrical, and therefore, described by-pass 42 is the symmetrical structure of described main line 41.
Simulation software is utilized to set up model for directional coupler 100, in 1.92GHz-2.17GHz frequency range, such as Fig. 4 institute
Showing, the input port of directional coupler provided for the embodiment of the present invention has isolation spectrum curve figure during input signal.
DB(S(2,1)) representative decibel represents when 1 port (i.e. the input interface 203 of microstripline plate 21) has signal to input, 2 ends
The output of mouth (i.e. the input port 204 of microstripline plate 21) and 1 port input power ratio；DB(S(3,1)) use is represented
Decibel represents when 1 port (i.e. the input interface 203 of microstripline plate 21) has signal to input, 3 ports (i.e. microstripline plate 22
Input port 203) output and 1 port input power ratio；DB(S(4,1)) representative decibel represents at 1 port
When (i.e. the input interface 203 of microstripline plate 21) has signal to input, 4 ports (i.e. the input port 204 of microstripline plate 22)
Output and 1 port input power ratio.As shown in Figure 4, the input interface 203 at described microstripline plate 21 has signal
During input, the input port 203 and 204 of input port 204, the two microstripline plate 22 of described two microstripline plates 21 is isolation
Port, the isolation of three isolated ports is all at more than 20dB, it therefore meets the requirement of isolation.
As it is shown in figure 5, the energy when input port of directional coupler provided for the embodiment of the present invention has an input signal
Amount transmission spectrum curve chart.DB(S(5,1)) representative decibel represents at 1 port (i.e. the input interface 203 of microstripline plate 21)
When having signal to input, the output of 5 ports (i.e. the output port 205 of microstripline plate 21) and 1 port input power ratio；
DB(S(6,1)) representative decibel represents when 1 port (i.e. the input interface 203 of microstripline plate 21) has signal to input, 6 ends
The output of mouth (i.e. the output port 206 of microstripline plate 21) and 1 port input power ratio；DB(S(7,1)) use is represented
Decibel represents when 1 port (i.e. the input interface 203 of microstripline plate 21) has signal to input, 7 ports (i.e. microstripline plate 22
Output port 205) output and 1 port input power ratio；DB(S(8,1)) representative decibel represents at 1 port
When (i.e. the input interface 203 of microstripline plate 21) has signal to input, 8 ports (i.e. the output port 206 of microstripline plate 22)
Output and 1 port input power ratio.As shown in Figure 5, the input interface 203 at described microstripline plate 21 has signal
During input, the degree of coupling of two output ports 205 and 206 of described microstripline plate 21 and 22 is about-6dB.
The application is by arranging two dielectric-slabs 31,32 in the opposite sides on floor 10, and at said two dielectric-slab 31
It is respectively provided with the two microstripline plates 21 and 22 being electrically connected to each other on 32, thus realizes being set to described microstripline plate
Lower two-layer, reducing the horizontal space that described microstripline plate takies, reduces described directional coupler 100 in a lateral direction
Size, so that described directional coupler 100 is on the basis of can completing the function of microstripline plate of matrix structure, it is possible to
Realize size to reduce, solve in prior art when described microstripline plate uses matrix structure, described dielectric-slab and floor
Size all increase and cause the lateral dimension of described directional coupler relatively big, the space taken is bigger, it is difficult to meet small size
The technical problem of requirement, reach to reduce the size of described directional coupler 100, the most described directional coupler 100 small size
Growth requirement.
Embodiment two
Based on same inventive concept, present invention also offers a kind of antenna 300, as shown in Figure 6, for another reality of the present invention
Execute the annexation schematic diagram of the antenna 300 that example provides.Described antenna 300 includes directional coupler 320 and four array antenna oscillators
310.Wherein, directional coupler 320 structurally and functionally with the structurally and functionally phase of the directional coupler 100 in embodiment one
With, do not repeat them here.
Four array antenna oscillators 310 connect four of two microstripline plates 21 and 22 of described directional coupler 320 respectively
Output interface 205 and 206.
Input interface 203 or 204 at two microstripline plates 21 or 22 of described directional coupler 320 has signal to input
Time, four output interfaces 205 and 206 of two microstripline plates 21 and 22 all have signal to export, and think that described four array antennas shake
Son 310 provides feed, and described four array antenna oscillators 310 are to launch this signal.
Above-mentioned antenna 300 is by using opposite sides on floor 10 to arrange two dielectric-slabs 31,32, and in said two
It is respectively provided with the directional coupler 320 of the two microstripline plates 21 and 22 being electrically connected to each other on dielectric-slab 31 and 32, thus realizes
Described microstripline plate is set to upper and lower two-layer, and to reduce the horizontal space that described microstripline plate takies, it is described fixed to reduce
To bonder 320 size in a lateral direction, so that described directional coupler 320 can complete the micro-of matrix structure
On the basis of the function of wiring board, it is possible to realize size and reduce, solve in prior art and use square at described microstripline plate
During battle array structure, the size on described dielectric-slab and floor all increases and causes the lateral dimension of described directional coupler relatively greatly, takies
Space bigger, it is difficult to meet the technical problem of undersized requirement, reach to reduce the size of described directional coupler 320, profit
In the described undersized growth requirement of directional coupler 320.
Embodiment three
Based on same inventive concept, present invention also offers a kind of antenna 400, as it is shown in fig. 7, be the another reality of the present invention
Execute the annexation schematic diagram of the antenna 400 that example provides.Described antenna 400 includes at least two directional coupler 430, at least four
Individual electric bridge 420 and at least eight array antenna oscillators 410.Wherein, directional coupler 430 structurally and functionally with determining in embodiment one
The most identical to bonder 100, does not repeats them here.
At least four electric bridge 420, each electric bridge 420 of described at least four electric bridge 420 includes two input interface 421 Hes
Two output interfaces 422, one of them input interface 421 of two input interfaces 421 of described each electric bridge 420 connects described
An output interface 205 or 206 of a directional coupler 430 in two directional couplers 430, described each electric bridge 420
Another input interface 421 of two input interfaces 421 connects another bonder 430 in said two directional coupler 430
An output interface 205 or 206.Described at least four electric bridge 420 structurally and functionally can be with first in embodiment one
Electric bridge 201 is the most identical with the second electric bridge 202.
At least eight array antenna oscillators 410, connect eight output interfaces 422 of described at least four electric bridge 420 respectively.
The input interface 203 or 204 of a directional coupler 430 in said two directional coupler 430 has signal
During input, four output interfaces 205 and 206 of this directional coupler 430 all have signal to export, and this signal is by defeated with these four
The input interface 421 of the described at least four electric bridge 420 that outgoing interface 205 and 206 connects enters described at least four electric bridge 420,
Export from eight output interfaces 422 of described at least four electric bridge 420 again, think that described four array antenna oscillators 410 provide feed,
Described four array antenna oscillators 410 are to launch this signal.
Above-mentioned antenna 400 is by using opposite sides on floor 10 to arrange two dielectric-slabs 31,32, and in said two
It is respectively provided with the directional coupler 430 of the two microstripline plates 21 and 22 being electrically connected to each other on dielectric-slab 31 and 32, thus realizes
Described microstripline plate is set to upper and lower two-layer, and to reduce the horizontal space that described microstripline plate takies, it is described fixed to reduce
To bonder 430 size in a lateral direction, so that described directional coupler 430 can complete the micro-of matrix structure
On the basis of the function of wiring board, it is possible to realize size and reduce, solve in prior art and use square at described microstripline plate
During battle array structure, the size on described dielectric-slab and floor all increases and causes the lateral dimension of described directional coupler relatively greatly, takies
Space bigger, it is difficult to meet the technical problem of undersized requirement, reach to reduce the size of described directional coupler 430, profit
In the described undersized growth requirement of directional coupler 430.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and amendment to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a directional coupler, it is characterised in that described directional coupler includes:
Floor；
Two microstripline plates；
Two dielectric-slabs, are respectively arranged between floor and said two microstripline plate；
Wherein, said two microstripline plate is electrically connected to each other, each microstripline plate bag in said two microstripline plate
Include two input interfaces that the second electric bridge that the first electric bridge electrically connects electrically connects with described first electric bridge with described first electric bridge
And two output interfaces electrically connected with described second electric bridge, and each electric bridge includes four ports；Described first electric bridge
First port and the second port electrically connect with said two input interface, the 3rd port and second on same microstripline plate
First port electrical connection of electric bridge, the 4th port is electrically connected with the second port of the second electric bridge on another one microstripline plate
Connect；Second port of described second electric bridge electrically connects with the 4th port of the first electric bridge on another one microstripline plate, the
Three ports and the 4th port electrically connect with said two output interface；
Described first electric bridge and described second electric bridge are identical second order electric bridge, and described second order electric bridge includes main line, by-pass, connection
Main line and three branch lines of by-pass, described main line and a length of λ/2 of described by-pass, described three branch lines connect institute respectively
State main line and the both ends of described by-pass and described main line and described by-pass length 1/2 at, wherein, λ is wavelength.
2. directional coupler as claimed in claim 1, it is characterised in that described main line and described by-pass are meander-shaped, and
Symmetrical relative to the centrage between described main line and described by-pass.
3. directional coupler as claimed in claim 2, it is characterised in that described second order electric bridge connects relative in described branch line
Connect the 3rd branch line at the 1/2 of described main line and described by-pass symmetrical.
4. directional coupler as claimed in claim 3, it is characterised in that described main line includes Part I and described first
The Part II that part and described 3rd branch line connect, described Part I includes in one end and said two input interface
The main microstrip line of first segment that one interface connects and the main microstrip line of the main microstrip line of described first segment second section connected vertically and
The main microstrip line of described second section connects and Section of three vertical main microstrip line is connected and vertical with described Section of three main microstrip line
Section four, main microstrip line is connected with described Section of four main microstrip line and vertical and main with described first segment microstrip line is positioned at the most always
Section of five main microstrip line on line.
5. the directional coupler as described in any claim in claim 1-4, it is characterised in that described directional coupler is also
Including metal case, described floor, said two microstripline plate and said two dielectric-slab are packaged in described metal case.
6. the directional coupler as described in any claim in claim 1-4, it is characterised in that said two dielectric-slab and
Arrange in offering the via being easy to the electrical connection of said two microstripline plate, described via on floor and prevent said two
The insulant that microstripline plate turns on described floor.
7. an antenna, it is characterised in that described antenna includes:
Directional coupler as described in any claim in claim 1-6；
Four array antenna oscillators, connect four output interfaces of two microstripline plates of described directional coupler respectively.
8. an antenna, it is characterised in that described antenna includes:
At least two directional coupler as described in any claim in claim 1-6；
At least four electric bridge, each electric bridge of described at least four electric bridge includes two input interfaces and two output interfaces, institute
One of them input interface of two input interfaces stating each electric bridge connects an orientation coupling in said two directional coupler
One output interface of clutch, another input interface of two input interfaces of described each electric bridge connects said two orientation
An output interface of another bonder in bonder；
At least eight array antenna oscillators, connect eight output interfaces of described at least four electric bridge respectively.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/089980 WO2015089797A1 (en) | 2013-12-19 | 2013-12-19 | Directional coupler and antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103748739A CN103748739A (en) | 2014-04-23 |
| CN103748739B true CN103748739B (en) | 2016-11-30 |
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ID=
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427503A (en) * | 2001-12-21 | 2003-07-02 | 三星电机株式会社 | Double-band coupler |
| CN103283086A (en) * | 2011-01-12 | 2013-09-04 | 株式会社村田制作所 | Directional coupler |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427503A (en) * | 2001-12-21 | 2003-07-02 | 三星电机株式会社 | Double-band coupler |
| CN103283086A (en) * | 2011-01-12 | 2013-09-04 | 株式会社村田制作所 | Directional coupler |
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