CN106876857A - A kind of phase dispersion compensation device of branch hybrid - Google Patents
A kind of phase dispersion compensation device of branch hybrid Download PDFInfo
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- CN106876857A CN106876857A CN201710204988.7A CN201710204988A CN106876857A CN 106876857 A CN106876857 A CN 106876857A CN 201710204988 A CN201710204988 A CN 201710204988A CN 106876857 A CN106876857 A CN 106876857A
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- high impedance
- low esr
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
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- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The invention belongs to dispersion compensation technology field, the phase dispersion compensation device of more particularly to a kind of branch hybrid.The present invention includes the waveguide height transformer section being arranged on the output arm of branch hybrid straightthrough port, the waveguide height transformer section realizes dispersion compensation using four high impedance transforming sections and four Low ESR transforming sections, impedance matching is completed simultaneously, the adjacent high impedance transforming section is a quarter waveguide wavelength with the length sum of Low ESR transforming section, by coming and going Phase Stacking, so that back wave and incidence wave opposite in phase, amplitude cancellation, effectively improve the standing wave of impedance matching and port, compensate for branch's electric bridge phase dispersion in itself well.The present invention only needs to be carried out on the output arm of straightthrough port waveguide dimensions modification and can be realized as dispersion compensation, and the present invention has simple for structure compact, is lost small, and port match is good, the advantages of power capacity is high.
Description
Technical field
The invention belongs to dispersion compensation technology field, the phase dispersion compensation dress of more particularly to a kind of branch hybrid
Put.
Background technology
Modern radar requires that antenna side lobe is more and more lower to interference free performance requirement more and more higher.It is especially airborne
Pulse-doppler radar, in order to anti-ground clutter is disturbed, the requirement to antenna side lobe is less than -30 decibels, -40 decibels, or even will
Less than -50 decibels.So low secondary lobe is obtained, mostly using slot array antenna, while the amplitude phase of antenna power division network
Bit distribution should have precision very high.Therefore, the power division network of high accuracy width, distributed mutually how is designed just into key problem in technology.For
Reduce between antenna element and the mutual coupling between each road in power division network inside, it is desirable to which power division network is isolated.Therefore, exist
In system with waveguide as transmission line, typically all with directional coupler as basic work(subdivision.The most frequently used guide directional
Coupler is that have 90 degree of phase differences between Waveguide branching coupler or kinds of Slot Coupled Waveguide Hybrids, two output arms of this electric bridge.
Although each road of feeding network is transferred into same phase in centre frequency, their length is also equal, because dispersion effect
Answer and wide band phase characteristic can not be obtained.Dispersion characteristics refer to that the phase velocity of ripple in the waveguide changes with the change of frequency
Characteristic, therefore bandwidth is wider, and working frequency range is higher, and effect of dispersion will be exaggerated, such as in X-band, 10% relative bandwidth
Feeding network, the low frequency point of output can differ 30 degree or so with phase between high frequency points, and this power division network to width phase high precision is
Do not allow, therefore need the phase dispersion compensation device for proposing a kind of branch hybrid badly.
The content of the invention
The present invention is in order to overcome the above-mentioned deficiencies of the prior art, there is provided a kind of phase dispersion compensation of branch hybrid
Device, the present invention can be very good compensation branch electric bridge phase dispersion in itself, possess simple and compact for structure, the small, port of loss
The characteristics of matching.
To achieve the above object, present invention employs following technical measures：
A kind of phase dispersion compensation device of branch hybrid includes being arranged on the output of branch hybrid straightthrough port
Waveguide height transformer section on arm.
Preferably, the waveguide height transformer section includes multiple high impedance transforming sections and multiple Low ESR conversion
Section, the output arm of the straightthrough port is connected with Low ESR transforming section, be provided between two Low ESR transforming sections one it is high
Transformer section, waveguide height transformer section one end farthest from the output arm of straightthrough port is set to high impedance conversion
Section.
Preferably, the high impedance transforming section is set to four, respectively the first high impedance transforming section, the second high resistant resistance
Change section, the 3rd high impedance transforming section, the 4th high impedance transforming section；The Low ESR transforming section is set to four, respectively first
Low ESR transforming section, the second Low ESR transforming section, the 3rd Low ESR transforming section, the 4th Low ESR transforming section；The straightthrough port
Output arm is converted with the first high impedance transforming section, the second high impedance transforming section, the 3rd high impedance transforming section, the 4th high impedance successively
Section, the first Low ESR transforming section, the second Low ESR transforming section, the 3rd Low ESR transforming section, the 4th Low ESR transforming section are connected, institute
The broadside size for stating the 4th high impedance transforming section is equal to the broadside size of branch hybrid straightthrough port.
Preferably, two sides long of the output arm of the straightthrough port extend vertically identical length to waveguide broadside direction
Afterwards, then after extending identical length to the output signal direction of the output arm of straightthrough port the first Low ESR transforming section is formed；It is described
After identical length is shunk in two sides long of the first Low ESR transforming section to waveguide broadside direction, then to the output arm of straightthrough port
Output signal direction forms the first high impedance transforming section after extending identical length；Two of the first high impedance transforming section are long
While after extending identical length to waveguide broadside direction then long to the output signal direction extension identical of the output arm of straightthrough port
The second Low ESR transforming section is formed after degree；Shrink identical to waveguide broadside direction in two sides long of the second Low ESR transforming section
Length after, then to straightthrough port output arm output signal direction extend identical length after formed the second high impedance convert
Section；After two sides long of the second high impedance transforming section extend identical length to waveguide broadside direction, then to straightthrough port
The output signal direction of output arm forms the 3rd Low ESR transforming section after extending identical length；The 3rd Low ESR transforming section
Two sides long to waveguide broadside direction shrink identical length after, then to straightthrough port output arm output signal direction extend
The 3rd high impedance transforming section is formed after identical length, two sides long of the 3rd high impedance transforming section are to waveguide broadside direction
After extending identical length, then to the 4th low-resistance of formation after the output signal direction extension identical length of the output arm of straightthrough port
Anti- transforming section, after identical length is shunk in two sides long of the 4th Low ESR transforming section to waveguide broadside direction, then to straight
The output signal direction of the output arm of port forms the 4th high impedance transforming section after extending identical length；
The first high impedance transforming section, the second high impedance transforming section, the 3rd high impedance transforming section, the conversion of the 4th high impedance
The structure all same of section；First Low ESR transforming section, the second Low ESR transforming section, the 3rd Low ESR transforming section, the 4th Low ESR
The structure all same of transforming section.
Further, the adjacent high impedance transforming section and the length sum of Low ESR transforming section are a quarter waveguide
Wavelength.
The beneficial effects of the present invention are：
1), the present invention includes the waveguide height transformer section being arranged on the output arm of branch hybrid straightthrough port,
The waveguide height transformer section realizes dispersion compensation using four high impedance transforming sections and four Low ESR transforming sections,
Impedance matching is completed simultaneously, and the adjacent high impedance transforming section and the length sum of Low ESR transforming section is a quarter waveguide
Wavelength, by coming and going Phase Stacking so that back wave and incidence wave opposite in phase, amplitude cancellation effectively improve impedance
With the standing wave with port, branch's electric bridge phase dispersion in itself is compensate for well.
2), the present invention only needs to be carried out on the output arm of straightthrough port waveguide dimensions modification and can be realized as dispersion compensation,
Therefore the present invention has simple for structure compact, is lost small, and port match is good, the advantages of power capacity is high；Using this phase dispersion
Compensation device, branch hybrid realizes dispersion compensation and impedance matching, and the two ends phase of bandwidth of operation differs 1 ° or so, together
When four port standing wave indexs it is good.
Brief description of the drawings
Fig. 1 is the branch hybrid model of one embodiment of the present of invention；
Fig. 2 is the phase difference simulation curve of Fig. 1 branch hybrids P2 and the output arms of P4 two；
Fig. 3 is the model of the waveguide segment that the P2 output arms of Fig. 1 are added a quarter waveguide wavelength；
Fig. 4 is the phase difference simulation curve of branch hybrid P2 and the output arms of P4 two in Fig. 3；
Fig. 5 is that branch hybrid P2 output arms are increased the present invention model after phase dispersion compensation device；
Fig. 6 is the size definition of waveguide height transformer section of the invention；
Fig. 7 is the phase difference simulation curve of branch hybrid P2 and the output arms of P4 two；
Fig. 8 is four return losses of port of Fig. 5 branch hybrids model.
Reference implication in figure is as follows：
11-the first high impedance transforming section the 12-the second high impedance transforming section
13-the three the 14-the four high impedance transforming section of high impedance transforming section
15-the first Low ESR transforming section the 16-the second Low ESR transforming section
17-the three the 18-the four Low ESR transforming section of Low ESR transforming section
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, being the branch hybrid model that bandwidth of operation is 9.0~9.6GHz, waveguide mouthful long edge size a=
22.86mm, broadside size b=10.96mm, four ports of the branch hybrid respectively as shown in figure 1, P1 is input port,
P2 is straightthrough port, and P3 is isolated port, and P4 is coupling aperture.
If increasing by one section of waveguide its broadside to become large-sized, this section of cut-off frequency step-down of waveguide, 360 ° of phases of a cycle
The corresponding waveguide wavelength in position is more long than original, it may also be said to which the phase shift in same unit length diminishes, and referred to as phase velocity is slack-off.Ripple
The length for leading size that broadside widens and this section of waveguide segment has together decided on the number of degrees of required phase shift.
Fig. 2 is the phase difference simulation curve of branch hybrid straight-through port P2 shown in Fig. 1 and the output arms of coupling aperture P4 two,
Respectively S12 and S14, two oriented parallels differ 90 ° in any frequency phase.
Fig. 3 be Fig. 1 branch electric bridge straightthrough port P2 output arms plus a quarter waveguide wavelength waveguide segment model,
Because straightthrough port P2 output arms add the waveguide segment energy of a quarter waveguide wavelength than advanced 90 ° of coupling aperture P4 output arm phases
90 ° of phases are compensated in narrower bandwidth of operation.
Fig. 4 is the phase difference simulation curve of branch hybrid straightthrough port P2 and the output arms of coupling aperture P4 two in Fig. 3, respectively
It is S12 and S14, two curves are intersecting in centre frequency, and phase curve slope is inconsistent in working band, here it is the table of dispersion
It is existing.Phase difference has 7 ° or so at the two ends of bandwidth of operation, that is, 9.0GHz and 9.6GHz, if by electricity in feeding network
Bridge multi-stage cascade, effect of dispersion is added up, and the phase error being finally introducing is not allowed the power division network of width phase high precision.
Fig. 5 is that branch hybrid straightthrough port P2 output arms are increased the present invention model after phase dispersion compensation device.
Each port position is constant, and impedance transition mechanism only changes waveguide broadside size, and narrow side size keeps constant.The dispersion compensation Duan Bo of calculating
Length is led for 39.3mm.
Shown in Fig. 1,5,6, the advanced waveguide arm broadside size of phase is increased into a2=28mm from a1=22.86mm, it is defeated
Go out the advanced waveguide arm of phase increases by one section of waveguide segment of about 36mm simultaneously with another output arm, can compensate 90 ° of advanced phases
Position, makes two output arm phases equal.The waveguide segment of the 36mm of the advanced output arm of phase in order to realize good matching, by by
One waveguide height transformer section and second waveguide height transformer section are used as dispersion compensating waveguide section.Electric bridge waveguide mouthful broadside
Size a1=22.86mm, narrow side size b=10.96mm, the broadside size a2=28mm of high impedance transforming section, high impedance conversion
The length c1=9.85mm of section, dispersion compensation section is the length c2=11.3mm of high impedance transforming section and Low ESR transforming section, work
The two ends phase for making bandwidth differs 1 ° or so.
A kind of phase dispersion compensation device of branch hybrid includes being arranged on the output of branch hybrid straightthrough port
Waveguide height transformer section 10 on arm.
The waveguide height transformer section 10 includes multiple high impedance transforming sections and multiple Low ESR transforming sections, described
The output arm of straightthrough port is connected with Low ESR transforming section, and a high impedance conversion is provided between two Low ESR transforming sections
Section, the waveguide height transformer section 10 one end farthest from the output arm of straightthrough port is set to high impedance transforming section.
The high impedance transforming section is set to four, respectively the first high impedance transforming section 11, the second high impedance transforming section
12nd, the 3rd high impedance transforming section 13, the 4th high impedance transforming section 14；The Low ESR transforming section is set to four, and respectively
One Low ESR transforming section 15, the second Low ESR transforming section 16, the 3rd Low ESR transforming section 17, the 4th Low ESR transforming section 18；Institute
State the output arm of straightthrough port successively with the first high impedance transforming section 11, the second high impedance transforming section 12, the 3rd high impedance transforming section
13rd, the 4th high impedance transforming section 14, the first Low ESR transforming section 15, the second Low ESR transforming section 16, the 3rd Low ESR transforming section
17th, the 4th Low ESR transforming section 18 is connected, and the broadside size of the 4th high impedance transforming section 14 is straight equal to branch hybrid
The broadside size of port.
After two sides long of the output arm of the straightthrough port extend vertically identical length to waveguide broadside direction, then to straight
The output signal direction of the output arm of port forms the first Low ESR transforming section 15 after extending identical length；First low-resistance
After identical length is shunk in two sides long of anti-transforming section 15 to waveguide broadside direction, then believe to the output of the output arm of straightthrough port
Number direction forms the first high impedance transforming section 11 after extending identical length；Two sides long of the first high impedance transforming section 11
After extending identical length to waveguide broadside direction, then extend identical length to the output signal direction of the output arm of straightthrough port
After form the second Low ESR transforming section 16；Phase is shunk to waveguide broadside direction in two sides long of the second Low ESR transforming section 16
With length after, then to straightthrough port output arm output signal direction extend identical length after formed the second high impedance convert
Section 12；After two sides long of the second high impedance transforming section 12 extend identical length to waveguide broadside direction, then to straight-through
The output signal direction of the output arm of mouth forms the 3rd Low ESR transforming section 17 after extending identical length；3rd Low ESR
Two sides long of transforming section 17 to waveguide broadside direction shrink identical length after, then output signal from the output arm to straightthrough port
Direction extends and formed after identical length the 3rd high impedance transforming section 13, two sides long of the 3rd high impedance transforming section 13 to
Waveguide broadside direction extend identical length after, then to straightthrough port output arm output signal direction extend identical length after
The 4th Low ESR transforming section 18 is formed, two sides long of the 4th Low ESR transforming section 18 shrink identical to waveguide broadside direction
Length after, then to straightthrough port output arm output signal direction extend identical length after formed the 4th high impedance transforming section
14；
The first high impedance transforming section 11, the second high impedance transforming section 12, the 3rd high impedance transforming section 13, the 4th high resistant
The structure all same of anti-transforming section 14；First Low ESR transforming section 15, the second Low ESR transforming section 16, the 3rd Low ESR transforming section
17th, the structure all same of the 4th Low ESR transforming section 18.
The adjacent high impedance transforming section is a quarter waveguide wavelength with the length sum of Low ESR transforming section.
Fig. 7 is the phase difference simulation curve of Fig. 5 models branch hybrid straightthrough port P2 and the output arms of coupling aperture P4 two, point
Wei not S12 and S14, two curve intersections, 1 ° or so of the phase difference at bandwidth of operation two ends.
Fig. 8 is four return losses of port of Fig. 5 branch hybrids model, respectively S11, S22, S33, S44, is owned
Profile amplitude is equivalent to voltage standing wave ratio below 1.2 in below 20dB.
Using this phase dispersion compensation device, branch hybrid realizes dispersion compensation and impedance matching, bandwidth of operation
Two ends phases differ 1 ° or so, while four port standing wave indexs are good.
Claims (5)
1. the phase dispersion compensation device of a kind of branch hybrid, it is characterised in that：It is straight including being arranged on branch hybrid
Waveguide height transformer section on the output arm of port.
2. the phase dispersion compensation device of a kind of branch hybrid as claimed in claim 1, it is characterised in that：The waveguide
Height transformer section includes multiple high impedance transforming sections and multiple Low ESR transforming sections, the output arm of the straightthrough port with it is low
Transformer section is connected, and a high impedance transforming section, the waveguide low-resistance high are provided between two Low ESR transforming sections
Anti- transforming section one end farthest from the output arm of straightthrough port is set to high impedance transforming section.
3. the phase dispersion compensation device of a kind of branch hybrid as claimed in claim 2, it is characterised in that：The high resistant
Anti- transforming section is set to four, respectively the first high impedance transforming section (11), the second high impedance transforming section (12), the 3rd high impedance
Transforming section (13), the 4th high impedance transforming section (14)；The Low ESR transforming section is set to four, respectively the first low-resistance resistance
Change section (15), the second Low ESR transforming section (16), the 3rd Low ESR transforming section (17), the 4th Low ESR transforming section (18)；It is described
The output arm of straightthrough port is converted with the first high impedance transforming section (11), the second high impedance transforming section (12), the 3rd high impedance successively
It is section (13), the 4th high impedance transforming section (14), the first Low ESR transforming section (15), the second Low ESR transforming section (16), the 3rd low
Transformer section (17), the 4th Low ESR transforming section (18) are connected, broadside size of the 4th high impedance transforming section (14) etc.
In the broadside size of branch hybrid straightthrough port.
4. the phase dispersion compensation device of a kind of branch hybrid as claimed in claim 3, it is characterised in that：It is described straight-through
Mouthful output arm two sides long extend vertically identical length to waveguide broadside direction after, then to straightthrough port output arm it is defeated
Go out after sense extends identical length and form the first Low ESR transforming section (15)；The first Low ESR transforming section (15)
After identical length is shunk in two sides long to waveguide broadside direction, then extend phase to the output signal direction of the output arm of straightthrough port
The first high impedance transforming section (11) is formed after same length；Two sides long of the first high impedance transforming section (11) are wide to waveguide
The is formed after edge direction extends identical length, then after extending identical length to the output signal direction of the output arm of straightthrough port
Two Low ESR transforming sections (16)；Identical is shunk to waveguide broadside direction in two sides long of the second Low ESR transforming section (16)
After length, then to straightthrough port output arm output signal direction extend identical length after form the second high impedance transforming section
(12)；After two sides long of the second high impedance transforming section (12) extend identical length to waveguide broadside direction, then to straight
The output signal direction of the output arm of port forms the 3rd Low ESR transforming section (17) after extending identical length；Described 3rd is low
Two sides long of transformer section (17) to waveguide broadside direction shrink identical length after, then to straightthrough port output arm it is defeated
Go out after sense extends identical length and form the 3rd high impedance transforming section (13), the 3rd high impedance transforming section (13)
After two sides long extend identical length to waveguide broadside direction, then extend phase to the output signal direction of the output arm of straightthrough port
The 4th Low ESR transforming section (18) is formed after same length, two sides long of the 4th Low ESR transforming section (18) are wide to waveguide
The is formed after edge direction shrinks identical length, then after extending identical length to the output signal direction of the output arm of straightthrough port
Four high impedance transforming sections (14)；
It is the first high impedance transforming section (11), the second high impedance transforming section (12), the 3rd high impedance transforming section (13), the 4th high
The structure all same of transformer section (14)；First Low ESR transforming section (15), the second Low ESR transforming section (16), the 3rd low-resistance
Anti- transforming section (17), the structure all same of the 4th Low ESR transforming section (18).
5. the phase dispersion compensation device of a kind of branch hybrid as claimed in claim 4, it is characterised in that：Adjacent institute
It is a quarter waveguide wavelength that high impedance transforming section is stated with the length sum of Low ESR transforming section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204988.7A CN106876857B (en) | 2017-03-31 | 2017-03-31 | Phase dispersion compensation device of waveguide branch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204988.7A CN106876857B (en) | 2017-03-31 | 2017-03-31 | Phase dispersion compensation device of waveguide branch bridge |
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| CN106876857A true CN106876857A (en) | 2017-06-20 |
| CN106876857B CN106876857B (en) | 2022-08-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204179188U (en) * | 2014-09-16 | 2015-02-25 | 安徽四创电子股份有限公司 | A kind of Wide stop bands millimeter waveguide gauffer filter |
| CN104882652A (en) * | 2015-06-12 | 2015-09-02 | 四川迈格酷科技有限公司 | Ultra-wide-band terahertz wave filter |
| CN206639902U (en) * | 2017-03-31 | 2017-11-14 | 安徽四创电子股份有限公司 | A kind of phase dispersion compensation device of branch hybrid |
-
2017
- 2017-03-31 CN CN201710204988.7A patent/CN106876857B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204179188U (en) * | 2014-09-16 | 2015-02-25 | 安徽四创电子股份有限公司 | A kind of Wide stop bands millimeter waveguide gauffer filter |
| CN104882652A (en) * | 2015-06-12 | 2015-09-02 | 四川迈格酷科技有限公司 | Ultra-wide-band terahertz wave filter |
| CN206639902U (en) * | 2017-03-31 | 2017-11-14 | 安徽四创电子股份有限公司 | A kind of phase dispersion compensation device of branch hybrid |
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| YABIN ZHANG等: "《Study of High-Power Ka-Band Rectangular Double-Grating Sheet Beam BWO》", 《IEEE TRANSACTIONS ON PLASMA SCIENCE》 * |
| 李霞 等: "《一种新型八路波导功分器的设计》", 《微波学报》 * |
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