CN205723878U - The double frequency rotary joint transmitted for S single-frequency and X single-frequency - Google Patents
The double frequency rotary joint transmitted for S single-frequency and X single-frequency Download PDFInfo
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- CN205723878U CN205723878U CN201620394158.6U CN201620394158U CN205723878U CN 205723878 U CN205723878 U CN 205723878U CN 201620394158 U CN201620394158 U CN 201620394158U CN 205723878 U CN205723878 U CN 205723878U
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Abstract
This utility model relates to a kind of double frequency rotary joint transmitted for S single-frequency and X single-frequency, including X frequency range joint and S frequency range joint, X frequency range joint composition mainly includes circular waveguide, rectangular waveguide and short circuit cylinder, described short circuit cylinder is positioned at the two ends of circular waveguide and is interconnected, described rectangular waveguide is arranged on the side disc at the two ends of circular waveguide, is interconnected by coupling aperture between rectangular waveguide and circular waveguide；S frequency range joint composition mainly includes coaxial waveguide, two power splitters, evil spirit T and waveguide bend, described coaxial waveguide is coaxially disposed with circular waveguide, and it is positioned at outside circular waveguide, transmission channel is formed between coaxial waveguide and circular waveguide, described two power splitters lay respectively at the both sides, two ends of coaxial waveguide, and and the transmission channel between coaxial waveguide and circular waveguide is interconnected, two horizontal signal ports of described evil spirit T are connected by two signal ports of waveguide bend and two power splitters.This utility model can transmit the rotary joint of two frequency range high-power RF signals of S, X simultaneously, builds the requirement of antenna uplink high-power signal dynamic transmission jointly solving S+X double frequency.
Description
Technical field
This utility model relates to a kind of microwave component, particularly relates to a kind of to realize S single-frequency and double frequency rotary joint that X single-frequency is transmitted simultaneously.
Background technology
Radiofrequency signal rotary joint is the core component of radar feed system, and its groundwork is exactly: ensure the electrically low-loss of transmitted signal and smooth transport when feeder system device (rotary joint) (generally 360 is unrestricted) for the relative rotation on the mechanical location motion of HIGH-POWERED MICROWAVES signal transmission.The design work of rotary joint is sufficiently complex and loaded down with trivial details, and the difficult problem that rotary joint designer encounters is exactly often: provides the size limitation of rotary joint, then carries out electrical arrangement design.This just requires that design theory and the operation principle of rotary joint are combined by designer with real work occasion, creative proposition feasible scheme.
S one-segment rotary joint, the one-segment rotary joint technology relative maturity of current S frequency range, can guarantee that large-scale S frequency range TT&C antenna up HIGH-POWERED MICROWAVES the signal electrically low-loss of transmitted signal and smooth transport when joint rotary motion.Its shortcoming: be only capable of transmitting S frequency range high-power one-segment microwave signal, it is impossible to meet S+X double frequency and build the actual operation requirements that the HIGH-POWERED MICROWAVES signal of two different frequency ranges of antenna is propagated simultaneously jointly.
X one-segment rotary joint, the one-segment rotary joint technology relative maturity of current X frequency range, can guarantee that large-scale X frequency range TT&C antenna up HIGH-POWERED MICROWAVES the signal electrically low-loss of transmitted signal and smooth transport when joint rotary motion.Its shortcoming: be only capable of transmitting X frequency range high-power one-segment microwave signal, it is impossible to meet S+X double frequency and build the actual operation requirements that the HIGH-POWERED MICROWAVES signal of two different frequency ranges of antenna is propagated simultaneously jointly.
X+L rotary joint[1]It it is X, L double frequency rotary joint design of a kind of super-large diameter, the method includes zero shellfish and coaxial line are dug the analysis opening annulus rotary joint operation principle, structure composition, critical size selection, pattern match and the interchannel isolation design etc. of rotary joint have been carried out detailed design, shortcoming is that size is relatively big, and the narrow installation space in special mounting occasion antenna (such as ship-board antenna) cannot be installed；The loss of X-band joint is bigger than normal, is not suitable for long path transmission high-frequency signal；Reflection coefficient is big, and standing wave index is higher；Achieve the signal transmission of X+L frequency range, it is impossible to complete the transmission of S+X frequency band signals, it is impossible to meet S+X double frequency and build the actual operation requirements that the HIGH-POWERED MICROWAVES signal of two different frequency ranges of antenna is propagated simultaneously jointly.
Utility model content
Technical problem to be solved in the utility model is that insertion loss is little, voltage standing wave ratio is low, power capacity is big for above-mentioned prior art offer one, the rotary joint of two frequency range high-power RF signals of S, X can be transmitted simultaneously, build the requirement of antenna uplink high-power signal dynamic transmission jointly solving S+X double frequency.
The technical scheme in the invention for solving the above technical problem is: a kind of double frequency rotary joint transmitted for S single-frequency and X single-frequency, including X frequency range joint and S frequency range joint, X frequency range joint composition mainly includes the coupling aperture between circular waveguide, rectangular waveguide, short circuit cylinder and circular waveguide and rectangular waveguide, described short circuit cylinder is positioned at the two ends of circular waveguide and is interconnected, described rectangular waveguide is arranged on the side disc at the two ends of circular waveguide, is interconnected by coupling aperture between rectangular waveguide and circular waveguide；S frequency range joint composition mainly includes coaxial waveguide, two power splitters, evil spirit T and waveguide bend, described coaxial waveguide is coaxially disposed with circular waveguide, and it is positioned at outside circular waveguide, transmission channel is formed between coaxial waveguide and circular waveguide, described two power splitters are made up of two little rectangular waveguides being arranged symmetrically with, described little rectangular waveguide lays respectively at the both sides, two ends of coaxial waveguide, and and the transmission channel between coaxial waveguide and circular waveguide is interconnected, two horizontal signal ports of described evil spirit T are connected by two signal ports of waveguide bend and two power splitters.
By choosing suitable rectangular waveguide coupling aperture path position and size, by its transmission mode (TE10Pattern) transfer coaxial waveguide transmission mode (TEM) to；Symmetrical drive is used to add the method for evil spirit T to eliminate TE11Pattern, the merit of coupling amount and evil spirit T by calculating coupling aperture is divided performance, is utilized the anti-phase excitation of coupling processing, by TE11Pattern is offset, it is ensured that only exist TEM mode in joint body, thus completes S frequency range rotary joint as signal transfer mode in a tem mode and design, and its interface shape is the rectangular waveguide of BJ22.By choosing rectangular waveguide suitable coupling aperture path position and size, by its transmission mode (TE10Pattern) transfer circular waveguide transmission mode (TM to01Pattern)；In circular waveguide, select suitable energized position, make the TM in circular waveguide01Mould excitation maximum, the minimum of basic mode excitation simultaneously；By choosing suitable circular waveguide location of short circuit, again basic mode is suppressed, thus completed with TM01Pattern designs as the X frequency range rotary joint of signal transfer mode, and its interface uses BJ84 rectangular waveguide.S/X rotary joint is combined with coaxial nested form, according to the arrangement form of joint path, selects different choke grooves, including S type and improvement L-type choke groove, be finally completed the design of whole S/X double frequency rotary joint.
The layout of path uses the form that two paths are coaxially nested, the rotary joint of X frequency range is arranged in axial portions, use circular waveguide as joint body.
S frequency range waveguide uses the form of symmetrical drive, uses two power splitters to encourage out by coaxial line basic mode, simultaneously first higher mode of suppression.After the signal in coaxial line is coupled into rectangular waveguide, evil spirit T is utilized by the signal syntheses being coupled out and to export.
X frequency range waveguide selects the correct position at circular waveguide to open coupling aperture to reach TM01Excitation, select suitable short circuit cylinder height with to TE simultaneously11Pattern suppresses.
Compared with prior art, the utility model has the advantage of:
(1) electricity function index is high, it is possible to transmission S/X frequency range radiofrequency signal simultaneously.
(2) compact conformation, it is possible to be arranged in center of antenna body small space.
(3) bearing capacity is strong, it is possible to pressure > 1000W.
(4) signal transmission attenuation is little, Insertion Loss ＜ 0.4dB.
(5) reflection coefficient is low, voltage standing wave ratio ＜ 1.15:1.
(6) structure design is prone to processing and manufacturing.
Accompanying drawing explanation
Fig. 1 is S/X double frequency rotation joint structure schematic diagram；
Fig. 2 is X frequency range rotation joint structure schematic diagram；
Fig. 3 is the two power splitter analogous diagram that coaxial waveguide turns rectangular waveguide；
Fig. 4 is evil spirit T analogous diagram；
Fig. 5 is waveguide bend transition analogous diagram；
Fig. 6 is that S frequency range articular portion forms analogous diagram；
Fig. 7 is the overall axially cut-away view in two-band joint；
Fig. 8 is X frequency range rotary joint power capacity simulation result；
Fig. 9 is S frequency range rotary joint power capacity simulation result.
Wherein:
Circular waveguide 1, rectangular waveguide 2, short circuit cylinder 3, coupling aperture 4, coaxial waveguide 5, two power splitter 6, evil spirit T7, waveguide bend 8.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
A kind of double frequency rotary joint transmitted for S single-frequency and X single-frequency in the present embodiment, transmits the radiofrequency signal of S Yu X frequency range, two passages of joint designs, respectively transmission S frequency range and the transmitting signal of X frequency range in a joint simultaneously.Respectively two-way rotary joint is designed during design, after each joint designs completes, two-way joint is combined, make rotary joint entirety have the ability simultaneously transmitting S Yu X frequency range.Joint schematic diagram is as shown in Figure 1.
(1) design of X frequency range rotary joint and emulation
X frequency range joint composition mainly includes circular waveguide 1, rectangular waveguide 2, short circuit cylinder 3, and the coupling aperture 4 between circular waveguide 1 and rectangular waveguide 2, described short circuit cylinder 3 is positioned at the two ends of circular waveguide 1 and connects with short circuit cylinder 3, on the side disc at the two ends that described rectangular waveguide 2 is arranged at circular waveguide 1, it is interconnected by coupling aperture 4 between rectangular waveguide 2 and circular waveguide 1, X frequency band signals is entered circular waveguide 1 by one of them rectangular waveguide 2 by coupling aperture 4, it is sent to another rectangular waveguide 2 out by another coupling aperture 4 again through circular waveguide 1, X frequency range joint designs is relatively easy, its Chief technology is how to encourage TM01Pattern, avoids encouraging TE simultaneously11Pattern.The correct position at circular waveguide 1 is selected to open coupling aperture 4 to reach TM01Excitation, select suitably short circuit bucket 3 height with to TE simultaneously11Pattern suppresses.As in figure 2 it is shown, the height of short circuit bucket 3 determines TE11The degree of suppression of pattern and to TM01The incentive degree of pattern, first the composition in half X frequency range joint is designed and simulation modeling during design, because joint belongs to structure symmetrical above and below, after calculating half joint, electric property after joint entire combination being got up will not change, so, according to phantom, the size at each position of X waveguide type rotary joint just can be the most selected.With selected size by using Frequency Simulation Software to carry out simulation calculation, adjust and choose the altered circular waveguide of suitable size and standard rectangular waveguide addition step-wise transition section, adjust coupling aperture size and location, just can calculate acquisition meet or be higher than the carried technical requirement of engineering, its standing wave curve result of calculation is less than-30dB.Again through optimizing calculating further, the electric property in whole joint is made to be in excellent condition.
(2) design of S frequency range rotary joint and emulation
S frequency range joint composition mainly includes coaxial waveguide 5, two power splitter 6, evil spirit T7 and waveguide bend 8.Described coaxial waveguide 5 is coaxially disposed with circular waveguide 1, and it is positioned at outside circular waveguide 1, forming frequency transmission channel between coaxial waveguide 5 and circular waveguide 1, described two power splitters 6 are made up of two little rectangular waveguides being arranged symmetrically with, described little rectangular waveguide lays respectively at the both sides, two ends of coaxial waveguide 5, and and the transmission channel between coaxial waveguide 5 and circular waveguide 1 is interconnected, owing to the height of the little rectangular waveguide of two power splitters 6 is less than the rectangular waveguide height of evil spirit T7, two horizontal signal ports of the most described evil spirit T7 are connected with two signal ports of two power splitters 6 by waveguide bend 8, the complicated structure of S rotary joint, this is owing to S frequency range joint is in addition to the signalling channel of S frequency range to be provided, also provide the work space in X frequency range joint simultaneously.The most first being designed the composition in half S frequency range joint and simulation modeling during design, specific design is as follows:
1. two power splitter design
S frequency range joint needs to use the form of symmetrical drive, needs exist for two power splitters 6 of 5 turns of rectangular waveguides of coaxial waveguide, makes the basic model (TEM mode) of coaxial line to be energized out, make first higher modes (TE in coaxial line simultaneously11Pattern) it is suppressed.Two power splitters 6 of this 5 turns of rectangular waveguides of coaxial waveguide are as it is shown on figure 3, modeled emulation, and single parts reflection loss is reduced to below-38dB.
2. evil spirit T design
After the signal in coaxial waveguide 5 is coupled into the rectangular waveguide of two power splitters 6 respectively, recycling evil spirit T7 by the signal syntheses being coupled out respectively and exports, and evil spirit T7 structure chart is as shown in Figure 4.After the signal of homophase is inputted respectively by A port and B port, composite signal will export from C port, and D port is then isolated port, can here lay high power load or the port as air-cooling apparatus uses, modeled emulation, single parts reflection loss is down to below-27dB.
3. waveguide bend changeover portion design
Little rectangular waveguide 6.1 port sizes of two power splitters 7 of 5 turns of rectangular waveguides of coaxial waveguide is different from the rectangular waveguide port sizes of evil spirit T8, it is therefore desirable to both are coupled together by rectangular waveguide transition, is also required to use waveguide bend 8 simultaneously.In order to make the more smaller of joint, waveguide bend 8 and waveguide transition are designed to parts, it can be made simultaneously to have above-mentioned two function.This waveguide bend transition is as it is shown in figure 5, modeled emulation, and single parts reflection loss is down to below-34dB.
When after the complete single parts of S frequency range joint designs, they are combined, as shown in Figure 6.First calculating the electric property in half joint, the reflection loss in half joint of S frequency range is reduced to below-28dB.Total joint system in combination being got up, electric property is just close to kilter, then through optimizing further, makes the piece electrical performance in S frequency range joint reach desired state.
(3) double frequency joint designs
After the joint of single frequency range has separately designed, being combined by two passages, such total joint just has the function that S/X frequency range is transmitted simultaneously.S/X two-band rotary joint overall structure sectional view is as shown in Figure 7.
(4) leading indicator simulation result:
Using the present invention to carry out simulation analysis by HFSS software, double frequency joint all can meet index request in the computer sim-ulation result of S/X frequency range electric property, and two-band joint power Capacity Simulation result is as shown in Fig. 8 ∽ Fig. 9.Each result of calculation is as listed by table 1 below:
Table 1 two-band joint electric property result of calculation
The S/X double frequency rotary joint using the inventive method design has been successfully applied on certain large-scale boat-carrying TT&C antenna.
It is suitable for the design in Single-channel Rolling joint.
In addition to the implementation, this utility model also includes the technical scheme that other embodiments, all employing equivalents or equivalence substitute mode are formed, within all should falling into this utility model scope of the claims.
Claims (1)
1. the double frequency rotary joint transmitted for S single-frequency and X single-frequency, it is characterized in that: it includes X frequency range joint and S frequency range joint, X frequency range joint composition mainly includes the coupling aperture (4) between circular waveguide (1), rectangular waveguide (2), short circuit cylinder (3) and circular waveguide (1) and rectangular waveguide (2), described short circuit cylinder (3) is positioned at the two ends of circular waveguide (1) and is interconnected, on the side disc at the two ends that described rectangular waveguide (2) is arranged at circular waveguide (1), it is interconnected by coupling aperture (4) between rectangular waveguide (2) and circular waveguide (1)；S frequency range joint composition mainly includes coaxial waveguide (5), two power splitters (6), evil spirit T(7) and waveguide bend (8), described coaxial waveguide (5) is coaxially disposed with circular waveguide (1), and it is positioned at circular waveguide (1) outside, transmission channel is formed between coaxial waveguide (5) and circular waveguide (1), described two power splitters (6) are made up of two little rectangular waveguides being arranged symmetrically with, described little rectangular waveguide lays respectively at the both sides, two ends of coaxial waveguide (5), and and the transmission channel between coaxial waveguide (5) and circular waveguide (1) is interconnected, described evil spirit T(7) two horizontal signal ports be connected with two signal ports of two power splitters (6) by waveguide bend (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620394158.6U CN205723878U (en) | 2016-05-05 | 2016-05-05 | The double frequency rotary joint transmitted for S single-frequency and X single-frequency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620394158.6U CN205723878U (en) | 2016-05-05 | 2016-05-05 | The double frequency rotary joint transmitted for S single-frequency and X single-frequency |
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| CN205723878U true CN205723878U (en) | 2016-11-23 |
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| CN201620394158.6U Expired - Fee Related CN205723878U (en) | 2016-05-05 | 2016-05-05 | The double frequency rotary joint transmitted for S single-frequency and X single-frequency |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909469A (en) * | 2021-02-19 | 2021-06-04 | 中国科学院高能物理研究所 | Waveguide power distribution and synthesis method with arbitrary power ratio and distribution and synthesis device |
| CN114696054A (en) * | 2022-03-25 | 2022-07-01 | 清华大学 | Adjustable power divider, method, electronic device and storage medium |
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2016
- 2016-05-05 CN CN201620394158.6U patent/CN205723878U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909469A (en) * | 2021-02-19 | 2021-06-04 | 中国科学院高能物理研究所 | Waveguide power distribution and synthesis method with arbitrary power ratio and distribution and synthesis device |
| CN112909469B (en) * | 2021-02-19 | 2021-09-28 | 中国科学院高能物理研究所 | Waveguide power distribution and synthesis method with arbitrary power ratio and distribution and synthesis device |
| CN114696054A (en) * | 2022-03-25 | 2022-07-01 | 清华大学 | Adjustable power divider, method, electronic device and storage medium |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20180505 |