CN207925648U - A kind of ultra wide band combiner based on Mobius ring - Google Patents
A kind of ultra wide band combiner based on Mobius ring Download PDFInfo
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- CN207925648U CN207925648U CN201820458340.2U CN201820458340U CN207925648U CN 207925648 U CN207925648 U CN 207925648U CN 201820458340 U CN201820458340 U CN 201820458340U CN 207925648 U CN207925648 U CN 207925648U
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Abstract
The utility model provides a kind of ultra wide band combiner based on Mobius ring, including Planar Magic-T, the Planar Magic-T includes medium substrate, it is symmetricly set on the circular transmission line of the four sections of top layer transmission lines and bottom transmission line composition of both sides on medium substrate, four points of connection draws four ports to form magic T, the physical length of every section of top layer transmission line and bottom transmission line is quarter-wave, wherein on the medium substrate between one section of top layer transmission line and bottom transmission line, the via of the top layer transmission line and bottom transmission line that are connected at this is set, what is drawn from this section of transmission line both ends is the first constant amplitude port and poor port, the formation and port that another port adjacent with the first constant amplitude port is drawn, remaining a port is exactly the second constant amplitude port.The structure application parallel wire structure of the utility model, overall structure have many advantages, such as that miniaturization, low section are easy to integrated with planar microwave circuit.
Description
Technical field
The utility model is related to combiner field, more particularly to a kind of ultra wide band combiner based on Mobius ring.
Background technology
Development with microwave radio commu technology to directions such as high speed, multiband, large capacities, high-performance, miniaturization and
The design of wideband microwave device and the scientific research hot spot for being developed into microwave current, millimetre-wave circuit.Broadband sum-difference network device is
The important component of radio-frequency front-end has wide in pulse Doppler radar, countermeasures set and guided weapon system
General application.It has a wide range of applications in microwave technical field.
Basic sum-difference network unit is known as evil spirit T, is four port devices, and two of which port is constant amplitude port, third end
Mouthful it is and port that the 4th port is poor port, as the term suggests the in-phase signal of two input ports exports after being added from port, and two
The reversed component of input port is exported from poor port, and two input ports are mutually isolated.Due to the reciprocity of microwave passive component, work as letter
Number from when being inputted with port, the output of constant amplitude port is with equal amplitude microwave signal, each constant amplitude port output work under lossless case
Rate is the half of input power, is exported in poor port without power；When signal is inputted from poor port, constant amplitude port exports reverse phase
Etc. amplitudes microwave signal, each constant amplitude port output power is also the half of input power under lossless case, without power with
Port exports, i.e. evil spirit T may be used as with phase or reversed power splitter.
More complicated sum-difference network is may be constructed by multiple evil spirit T, typical four evil spirits T may make up four road signals and poor net
Network, can be formed with signal, trim and orientation difference signal, be widely used in radar is than phase angle measurement.
The implementation method of magic T mainly has two kinds of implementation methods of waveguide magic T and micro-strip 180 degree electric bridge (Planar Magic-T).Waveguide evil spirit
T has larger power capacity and smaller damage, is commonly used for efficient power combing, is also employed in feeder front end shape
At antenna difference beam.Micro-strip 180 degree electric bridge has two-dimensional structure, integrates, is often used as shown in Figure 1, being easy to planar microwave circuit
In balance amplifier, phase shifter, frequency mixer.
Conventional magic T bandwidth is about 20%, and frequency band is relatively narrow can not to be competent at broadband connections demand.Industry to Wide Band Magic T into
A lot of research work is gone, main improved method has：(1) it uses mating structure or expands bandwidth using ridge waveguide；(2) plane evil spirit
The mixing ring of T, come the microstrip line for replacing 3/4ths wavelength traditional, has broadened band with quarter-wave coupling line unit
It is wide；(3) on the basis of conventional planar evil spirit T is designed, micro-strip-line of rabbet joint transitional structure, the comprehensive mistake from micro-strip-line of rabbet joint are introduced
It crosses two aspects of structure and impedance matching and document K.U-yen, E.J.Wollack is shown in into line broadening to working band,
J.Papapolymerou,and J.Laskar,A broadband planar magic T using microstrip-
slotline transitions,IEEE Trans.Microw.TheoryTech.,vol.50,no.7,Jan.2002:
pp.1683-1688。
Currently, Planar Magic-T model and port schematic diagram as shown in Figure 1, used in electric bridge three sections of quarter-waves and
One section of 3/4ths wavelength transmission line.If assert that 1 is and port, 2 be poor port, 3 and 4 for etc. amplitudes port, due to electricity
The symmetry of bridge can also assert that 4 are and port, then 3 be poor port, 1 and 2 for etc. amplitudes port, no matter which kind of situation, 1 He of port
2 are mutually isolated, and port 3 and 4 is mutually isolated.Due to having used the transmission line of characteristic length in electric bridge, when deviateing centre frequency,
The offset of 3/4ths wavelength transmission line electrical length is three times of quarter-wave offset, and unbalance in phase leads to magic T-port
Reactive component increases rapidly, and is degrading port match, causes bandwidth insufficient.
Utility model content
The utility model is directed to the above-mentioned deficiency of the combiner currently based on Planar Magic-T, provides a kind of based on Mo Biwu
The ultra wide band combiner of this ring.
The utility model realizes that its technical purpose technical solution is：A kind of ultra wide band combiner based on Mobius ring,
Including Planar Magic-T, the Planar Magic-T includes medium substrate, is symmetricly set on four sections of top layers transmission of both sides on medium substrate
The circular transmission line of line and bottom transmission line composition, four points of connection draw four ports to form magic T, every section of top layer transmission line
Physical length with bottom transmission line is quarter-wave, wherein between one section of top layer transmission line and bottom transmission line
On medium substrate, setting is connected to the via of the top layer transmission line and bottom transmission line at this, is from what this section of transmission line both ends were drawn
First constant amplitude port and poor port, the formation and port that another port adjacent with the first constant amplitude port is drawn,
Remaining a port is exactly the second constant amplitude port.
The structure application parallel wire structure of the utility model, overall structure have many advantages, such as that miniaturization, low section are easy to
It is integrated with planar microwave circuit.
Further, in the above-mentioned ultra wide band combiner based on Mobius ring：The via is arranged first etc.
The centre of width port and poor port.
Further, in the above-mentioned ultra wide band combiner based on Mobius ring：It is drawn from the bottom transmission line
Line is gradually widened to be referred to being formed.
Further, in the above-mentioned ultra wide band combiner based on Mobius ring：Curve is widened in the ground reference
For exponential fade profile.
Below with reference to drawings and examples, the utility model is described in detail.
Description of the drawings
Fig. 1 is current common plane evil spirit T designs and port schematic diagram.
Fig. 2 is the structure chart of the combiner of the utility model embodiment 1.
Fig. 3 is 1 parallel wire of the utility model embodiment and via structure figure.
Fig. 4 is the combiner topology diagram of the utility model embodiment 1.
Fig. 5 is the Wide Band Magic T structures that the utility model embodiment 1 is converted to microstrip line port.
Fig. 6 is the metal printing drawing on 1 Wide Band Magic T top layer medium substrates of the utility model embodiment.
Fig. 7 is the metal printing drawing on 1 Wide Band Magic T underlying dielectric substrates of the utility model embodiment.
Fig. 8 be 1 Wide Band Magic T-port S parameter of the utility model embodiment (1 port input, S31, S41 be port work(divide,
S21 is port isolation).
Fig. 9 be 1 Wide Band Magic T-port S parameter of the utility model embodiment (2 ports input, S32, S42 be port work(divide,
S12 is port isolation)
Figure 10 is that (a is that port 1 inputs 3,4 ends to 1 Wide Band Magic T work(point port amplitude imbalance degree of the utility model embodiment
Dipped ring weighing apparatus degree, b are that port 2 inputs 3,4 port degrees of unbalancedness).
Figure 11 is that work(divides port phase degree of unbalancedness when 1 Wide Band Magic T of the utility model embodiment and port are inputted.
Figure 12 is that work(divides port phase degree of unbalancedness when 1 Wide Band Magic T differences port of the utility model embodiment inputs.
Specific implementation mode
The present embodiment is combined with quarter-wave transmission line using 180 degree paraphase and realizes 270 degree of electrical length, due to
180 degree paraphase does not change with frequency, and remaining quarter-wave transmission line electrical length is with the variation of frequency and other three section four
/ mono- wavelength transmission line locking is kept in comparable bandwidth compared with fractional value due to port reactive component at this time, and then greatly
Expanded bandwidth.For evil spirit T structures of the present invention as shown in figure 4, wherein solid line is microwave signal line, dotted line is that ground is joined
It examines.Using microwave signal line with microwave with reference to realizing by the way of exchanging, which is known as Moebius for 180 degree paraphase
Transformational structure, specific design realize signal cross interconnection using via.The physical size of this section of transmission line is quarter-wave,
Moebius transformational structure realizes 180 degree paraphase, therefore 270 degree of electrical length may be implemented in this section.Theoretically via interconnection
Position any position of the quarter-wave can, but for holding structure symmetry, via translation bit installs in
Point.
The structure chart of the magic T of the ultra wide band combiner based on Mobius ring of specific the present embodiment is as shown in Fig. 2, adopt
The Wide Band Magic T designed with parallel wire, four sections of transmission line physical lengths that group circularizes are quarter-wave, and paraphase uses
8 interconnection structure of a pair of of via realizes that medium substrate 5 is using conventional microwave plank.The concrete structure of the present embodiment such as Fig. 2
Shown, Planar Magic-T includes medium substrate 5, and the four sections of top layer transmission lines 6 and bottom for being symmetricly set on both sides on medium substrate 5 pass
The circular transmission line that defeated line 7 forms, four points of connection draw four ports to form magic T, and every section of top layer transmission line 6 and bottom pass
The physical length of defeated line 7 is quarter-wave, wherein the medium between one section of top layer transmission line 6 and bottom transmission line 7
On substrate 5, setting is connected to the via 8 of the top layer transmission line 6 and bottom transmission line 7 at this, is from what this section of transmission line both ends were drawn
First constant amplitude port 3 and poor port 2, the formation and port 1 that another port adjacent with the first constant amplitude port 3 is drawn remain
Remaining a port is exactly the second constant amplitude port 4.
The present embodiment uses element of the two-wire as Planar Magic-T with balanced structure, and parallel wire is also
It is that top layer transmission line 6 and bottom transmission line 7 form signal wire and ground and refer to each other, the two is crossed one another using via 8 can
Realize 180 degree paraphase, the specific structure is shown in FIG. 3
In the present embodiment, magic T needs to interconnect with planar microwave circuit, therefore microstrip line construction need to be converted at port, i.e.,
By ground with reference to gradually widening, the Broadband Matching of microstrip line and parallel wire is realized.Curve is widened with reference to 9 using ground in the present embodiment
For exponential fade profile, transmission line transition band width is much larger than the bandwidth of operation of parallel wire evil spirit T, overall structure as shown in figure 5,
Overall structure can be machined using conventional microwave doubling plate technique, and top-level metallic printing figure is as shown in fig. 6, underlying metal
Printing figure is as shown in Figure 7.
When signal is inputted from Wide Band Magic T and port (port 1), S parameter is as shown in figure 8, port 3 and 4 power of port are flat
Point, the isolation about 34dBc of isolated port 2, port standing wave is less than -16dB within the scope of an octave.When signal is from poor end
When mouthful (port 2) input, S parameter is as shown in figure 9, port 3 and 4 power of port are divided equally, the isolation about 34dBc of isolated port 1,
Port standing wave is less than -16dB within the scope of an octave.Signal from when being inputted with port and poor port, etc. amplitudes port work(
Rate degree of unbalancedness is as shown in Figure 10, and unbalanced power degree is ± 0.1dB within the scope of an octave.With the phase of port input
Position unbalanced type is as shown in figure 11, and unbalance in phase is less than 2.1 degree within the scope of an octave；The phase of poor port input is not
Balanced type is as shown in figure 12, and unbalance in phase is less than 2.1 degree within the scope of an octave compared with ideal 180 degree differs.
When signal is inputted from Wide Band Magic T and port (port 1), S parameter is as shown in figure 8, port 3 and 4 power of port are flat
Point, the isolation about 34dBc of isolated port 2, port standing wave is less than -16dB within the scope of an octave.When signal is from poor end
When mouthful (port 2) input, S parameter is as shown in figure 9, port 3 and 4 power of port are divided equally, the isolation about 34dBc of isolated port 1,
Port standing wave is less than -16dB within the scope of an octave.Signal from when being inputted with port and poor port, etc. amplitudes port work(
Rate degree of unbalancedness is as shown in Figure 10, and unbalanced power degree is ± 0.1dB within the scope of an octave.With the phase of port input
Position unbalanced type is as shown in figure 11, and unbalance in phase is less than 2.1 degree within the scope of an octave；The phase of poor port input is not
Balanced type is as shown in figure 12, and unbalance in phase is less than 2.1 degree within the scope of an octave compared with ideal 180 degree differs.
In the present embodiment, the chief component of combiner is Wide Band Magic T, it has following features：
Basic structure using parallel wire as Wide Band Magic T；
The phase of parallel wire signal and reference ground is overturn using Moebius structure；
The overturning of Moebius structure is realized using via；
It converts in the broadband that microstrip line and parallel wire are completed with reference to transition using exponential curve type.
Use parallel wire as the basic structure of Wide Band Magic T in the present embodiment, parallel wire can easily and microstrip line
Broadband Matching is carried out, relative to the modes such as microstrip line and line of rabbet joint 180 degree phase bit flipping easy to implement.The present embodiment, which uses, not to be compared
The phase of the black overturning of this structure parallel wire signal and reference ground, phase is overturn compared to using quarter-wave close coupled system
Position, has many advantages, such as that engineering is easily realized, is insensitive to mismachining tolerance.In addition, the present embodiment realizes Moebius knot using via
Structure is overturn, and via is easy to process, and theoretically mismachining tolerance influences very little to magic T broadband performances.The present embodiment is bent using index
The broadband that microstrip line and parallel wire are completed to line style with reference to transition is converted, and the switching bandwith is up to ten octaves, remote super magic T
Bandwidth range.
With existing Technical comparing, the unique Moebius paraphase structure combiner used in the present embodiment has smaller
Planar structure, broader bandwidth can be easily integrated with planar microwave circuit.Overcome conventional waveguide evil spirit T stereochemical structures it is big,
The shortcomings that narrower bandwidth, microwave is integrated, has important application value in miniaturized circuit.Its bandwidth is up to a frequency multiplication
Journey has preferable application prospect in microwave multi-band communication and wide frequency communication system, wideband radar and electronic warfare system.
Claims (4)
1. a kind of ultra wide band combiner based on Mobius ring, including Planar Magic-T, it is characterised in that：The Planar Magic-T packet
Medium substrate (5) is included, four sections of top layer transmission lines (6) and bottom transmission line (7) group of both sides on medium substrate (5) are symmetricly set on
At circular transmission line, four points of connection draws four ports to form magic T, every section of top layer transmission line (6) and bottom transmission line
(7) physical length is quarter-wave, wherein Jie between one section of top layer transmission line (6) and bottom transmission line (7)
On matter substrate (5), setting is connected to the via (8) of the top layer transmission line (6) and bottom transmission line (7) at this, from this section of transmission line
What both ends were drawn is the first constant amplitude port (3) and poor port (2), another adjacent end with the first constant amplitude port (3)
The formation and port (1), remaining a port that mouth is drawn are exactly the second constant amplitude port (4).
2. the ultra wide band combiner according to claim 1 based on Mobius ring, it is characterised in that：The via
(8) centre of the setting in the first constant amplitude port (3) and poor port (2).
3. the ultra wide band combiner according to claim 1 based on Mobius ring, it is characterised in that：From the bottom
Transmission line (7) lead-out wire, which is gradually widened, refers to (9) with being formed.
4. the ultra wide band combiner according to claim 3 based on Mobius ring, it is characterised in that：The ground reference
(9) curve of widening is exponential fade profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820458340.2U CN207925648U (en) | 2018-03-30 | 2018-03-30 | A kind of ultra wide band combiner based on Mobius ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820458340.2U CN207925648U (en) | 2018-03-30 | 2018-03-30 | A kind of ultra wide band combiner based on Mobius ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207925648U true CN207925648U (en) | 2018-09-28 |
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|---|---|---|---|
| CN201820458340.2U Expired - Fee Related CN207925648U (en) | 2018-03-30 | 2018-03-30 | A kind of ultra wide band combiner based on Mobius ring |
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| Country | Link |
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2018
- 2018-03-30 CN CN201820458340.2U patent/CN207925648U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |