CN105811052A - Dual-frequency rotary joint used capable of realizing S single-frequency and X single-frequency transmission - Google Patents
Dual-frequency rotary joint used capable of realizing S single-frequency and X single-frequency transmission Download PDFInfo
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- CN105811052A CN105811052A CN201610288868.5A CN201610288868A CN105811052A CN 105811052 A CN105811052 A CN 105811052A CN 201610288868 A CN201610288868 A CN 201610288868A CN 105811052 A CN105811052 A CN 105811052A
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- waveguide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/06—Movable joints, e.g. rotating joints
- H01P1/062—Movable joints, e.g. rotating joints the relative movement being a rotation
- H01P1/066—Movable joints, e.g. rotating joints the relative movement being a rotation with an unlimited angle of rotation
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Abstract
The invention relates to a dual-frequency rotary joint capable of realizing S single-frequency and X single-frequency transmission. The dual-frequency rotary joint comprises an X-frequency-band joint and an S-frequency-band joint; the X-frequency-band joint mainly comprises a circular waveguide, rectangular waveguides and short-circuit cylinders, wherein the short-circuit cylinders are positioned at the two ends of the circular waveguide and communicate with the circular waveguide; the rectangular waveguides are arranged on the side circular surfaces of the two ends of the circular waveguide; the rectangular waveguides communicate with the circular waveguide through coupling holes; the S-frequency-band joint mainly comprises a coaxial waveguide, two power dividers, a magnetic T, and waveguide bending heads, wherein the coaxial waveguide and the circular waveguide are coaxially arranged, and the coaxial waveguide is positioned outside the circular waveguide; a transmission channel is formed between the coaxial waveguide and the circular waveguide; the two power dividers are positioned on the two sides of the two ends of the circular waveguide respectively, and the two power dividers communicate with the transmission channel between the coaxial waveguide and the circular waveguide; and two horizontal signal ports of the magnetic T communicate with the two signal ports of the two power dividers through the waveguide bending heads. The dual-frequency rotary joint is capable of realizing S frequency-band and X frequency-band high-power radio frequency signal transmission at the same time, so that the requirement of dynamic transmission of upstream high-power signals of the S plus X dual-frequency jointly-established antenna can be satisfied.
Description
Technical field
The present invention relates to a kind of microwave component, particularly relate to and a kind of can 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, its groundwork exactly: ensure the electrically low-loss of transmitted signal and smooth transport when moving for the relative rotation to (being generally 360o unrestricted) on mechanical location of the feeder system device (rotary joint) for the transmission of HIGH-POWERED MICROWAVES signal.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: provide 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, creationary 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 the transmission high-power one-segment microwave signal of S frequency range, 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 the transmission high-power one-segment microwave signal of X frequency range, 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, the structure of rotary joint is formed, critical size selects, pattern match and interchannel isolation design etc. have carried out detailed design, shortcoming is larger in size, 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.
Summary of the invention
The technical problem to be solved 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.
This invention address that the technical scheme that the problems referred to above adopt 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 work point devices, evil spirit T and waveguide bend, described coaxial waveguide and circular waveguide are coaxially disposed, 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 adopted to add the method for evil spirit T to eliminate TE11Pattern, the merit of coupling amount and evil spirit T by calculating coupling aperture divides performance, utilizes the anti-phase excitation of coupling processing, by TE11Pattern is offset, it is ensured that only existing TEM mode in joint body, designing as the S frequency range rotary joint of signal transfer mode in a tem mode thus completing, its interface shape is the rectangular waveguide of BJ22.By choosing the suitable coupling aperture path position of rectangular waveguide and size, by its transmission mode (TE10Pattern) transfer circular waveguide transmission mode (TM to01Pattern)；Circular waveguide selects suitable energized position, makes the TM in circular waveguide01Mould excitation is maximum, and basic mode excitation simultaneously is minimum；By choosing suitable circular waveguide location of short circuit, again basic mode is suppressed, thus completing with TM01Pattern designs as the X frequency range rotary joint of signal transfer mode, and its interface adopts BJ84 rectangular waveguide.S/X rotary joint is combined with coaxial nested form, the arrangement form according to joint path, select 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 adopts the form of symmetrical drive, uses two power splitters to encourage out by coaxial line basic mode, suppresses first higher mode simultaneously.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, it is an advantage of the current invention that:
(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) structural 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 S frequency range articular portion composition 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 work point device 6, evil spirit T7, waveguide bend 8.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention 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 and X frequency range, two passages of joint designs, respectively the transmitting signal of transmission S frequency range and 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 and 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, described rectangular waveguide 2 is arranged on the side disc at the two ends of 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 then through circular waveguide 1, X frequency range joint designs is relatively easy, its Chief technology is in that how to encourage TM01Pattern, avoids excitation TE simultaneously11Pattern.The correct position at circular waveguide 1 is selected to open coupling aperture 4 to reach TM01Excitation, select suitable 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 tentatively 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 calculating acquisition meet or be higher than the carried technical requirement of engineering, its standing wave curve result of calculation is lower than-30dB.Then 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 work point device 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, due to two work point devices 6 little rectangular waveguide height less than evil spirit T7 rectangular waveguide height, therefore two horizontal signal ports of 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 except providing the signalling channel of S frequency range, also provide the work space in X frequency range joint simultaneously.Equally first the composition in half S frequency range joint being designed and simulation modeling during design, specific design is as follows:
1. two power splitter design
S frequency range joint needs to adopt 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, it is possible to 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
The rectangular waveguide port sizes of little rectangular waveguide 6.1 port sizes of two power splitters 7 of 5 turns of rectangular waveguides of coaxial waveguide and evil spirit T8 is different, it is therefore desirable to both are coupled together by rectangular waveguide transition, are also required to use to waveguide bend 8 simultaneously.In order to make the more smaller of joint, waveguide bend 8 and waveguide transition are designed to parts, it is possible to make it have above-mentioned two function simultaneously.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 further optimization, 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:
Adopting 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 such as shown in Fig. 8 ∽ Fig. 9.Listed by each result of calculation such as table 1 below:
Table 1 two-band joint electric property result of calculation
The S/X double frequency rotary joint adopting 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, present invention additionally comprises the technical scheme that other embodiments, all employing equivalents or equivalence substitute mode are formed, all should fall within the protection domain of the claims in the present invention.
Claims (1)
1. the double frequency rotary joint for S single-frequency and the transmission of 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, described rectangular waveguide (2) is arranged on the side disc at the two ends of circular waveguide (1), 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 work point devices (6), evil spirit T(7) and waveguide bend (8), described coaxial waveguide (5) and circular waveguide (1) are coaxially disposed, 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 |
|---|---|---|---|
| CN201610288868.5A CN105811052A (en) | 2016-05-05 | 2016-05-05 | Dual-frequency rotary joint used capable of realizing S single-frequency and X single-frequency transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610288868.5A CN105811052A (en) | 2016-05-05 | 2016-05-05 | Dual-frequency rotary joint used capable of realizing S single-frequency and X single-frequency transmission |
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| CN105811052A true CN105811052A (en) | 2016-07-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356605A (en) * | 2016-10-26 | 2017-01-25 | 成都锐芯盛通电子科技有限公司 | TM01 mode-based radial waveguide power distributor and power combiner |
| CN109066047A (en) * | 2018-09-28 | 2018-12-21 | 西安恒达微波技术开发有限公司 | Super high power three-dimensional feeder system and its flexible cable architecture |
| CN111106416A (en) * | 2019-12-31 | 2020-05-05 | 南通大学 | Substrate integrated coaxial line feed broadband circular waveguide rotary joint |
| 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 |
| CN113258962A (en) * | 2021-06-11 | 2021-08-13 | 浙江芯昇电子技术有限公司 | Signal transmission method of multi-channel wireless slip ring and wireless slip ring transmission system |
-
2016
- 2016-05-05 CN CN201610288868.5A patent/CN105811052A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356605A (en) * | 2016-10-26 | 2017-01-25 | 成都锐芯盛通电子科技有限公司 | TM01 mode-based radial waveguide power distributor and power combiner |
| CN109066047A (en) * | 2018-09-28 | 2018-12-21 | 西安恒达微波技术开发有限公司 | Super high power three-dimensional feeder system and its flexible cable architecture |
| CN111106416A (en) * | 2019-12-31 | 2020-05-05 | 南通大学 | Substrate integrated coaxial line feed broadband circular waveguide rotary joint |
| 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 |
| CN113258962A (en) * | 2021-06-11 | 2021-08-13 | 浙江芯昇电子技术有限公司 | Signal transmission method of multi-channel wireless slip ring and wireless slip ring transmission system |
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Application publication date: 20160727 |