CN109326887A - Millimeter wave circular waveguide multimode triple channel tracks feed - Google Patents
Millimeter wave circular waveguide multimode triple channel tracks feed Download PDFInfo
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- CN109326887A CN109326887A CN201811252245.8A CN201811252245A CN109326887A CN 109326887 A CN109326887 A CN 109326887A CN 201811252245 A CN201811252245 A CN 201811252245A CN 109326887 A CN109326887 A CN 109326887A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0208—Corrugated horns
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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
- H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
- H01P5/20—Magic-T junctions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The present invention proposes a kind of millimeter wave circular waveguide multimode triple channel tracking feed, it is made of multimode corrugated horn and feeding network, feeding network includes TE01 mode coupler, TE21 mode coupler, TM01 mode coupler, TE01 die combination network, TE21 mould group and network, TM01 die combination network, poor channel synthesis network and the orthogonal device of TE11 mould.The present invention is according to circular waveguide multimode autotracking principle, high-power triple channel autotracking function is realized in millimeter wave frequency band (wavelength 8mm), it is compared with traditional more loudspeaker tri-channel systems, in situation identical with efficiency, poor efficiency can be substantially improved, increase radar single-pulse track precision and distance.In structure realization, full utilization design of Simulation and machining are completed without welding, and connection is simple, is suitable for batch production.
Description
Technical field
The present invention relates to radar control technical field, specially a kind of millimeter wave circular waveguide multimode triple channel tracks feed.
Background technique
With the development of guided missile, rocket, artificial satellite and aerospace flight technology, to the tracking velocity of tracking radar, tracking accuracy,
Tracking range and anti-interference ability are proposed increasingly higher demands.Using the tracking system of sequence wave valve (such as conical scanning)
The requirement for having been unable to meet tracking high-speed aircraft, to generate monopulse tracking technology.Monopulse tracking feed is common
Form mainly have more loudspeaker systems and multimode system.
More loudspeaker systems carry out plus-minus by the reception signal to several loudspeaker and handle to obtain and road signal, orientation difference signal
And pitching difference signal.When antenna alignment target, poor road signal is minimum, and as target is far from antenna axial direction, poor road signal becomes larger.
It neutralizes road signal in addition to being used as transmitting and receiving signal, while to be also used as reference signal, will be received by target off-axis
Difference signal polarity with and road signal compared with, to judge the direction of target off-axis, and the size of difference signal then reflects target
The degree of off-axis.One ideal monopulse antenna should be range-sensitivity and angular sensitivity two indices are all best.This
Sample requires antenna and gain, poor gain and difference slope all reach maximum.However any more horn feeds cannot all make this three
Item parameter is maximum simultaneously, and here it is so-called contradiction between " sum mode " and " difference mode "s, mainly the contradiction with gain and poor gain.It must be rolled in design
The middle performance for considering poor loudspeaker, therefore the beam efficiency of more loudspeaker system antennas all will not be very high, is difficult to high speed, non-cooperative target
Mark tracking.
Multimode system is on the basis of with mould, using differential mode direction of an electric field figure in antenna axial direction for zero and in off-axis angle
The characteristics of upper polarized again, realizes autotracking.It is with TE11 and mould, TM01, TE21 and TE01 mould is the multimode autotracking of differential mode
Mode is a kind of advanced tracking mode.The monopulse tracking feed of multimode combination has similar to four loudspeaker Monopulse feed
Poor channel performance, however then determine that this guarantees poor channel performances by the loudspeaker performance of single port diameter with the performance in channel
It is optimal simultaneously, it may also be said to basically to solve contradiction between " sum mode " and " difference mode ".
Feed still without the multimode autotracking in open source literature while using TE11, TM01, TE21 and TE01 mould at present,
Current existing multimode autotracking mode mainly or use TE11 for and mould, TE21 for differential mode multi mode tracking mode.Relatively
In the pulse triple channel tracking system of more loudspeaker, circular waveguide multimode autotracking system, which can substantially reduce in antenna efficiency, to be existed
Contradiction between " sum mode " and " difference mode " problem, thus obtain well apart from tracking performance and higher angleonly tracking performance.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention proposes that a kind of millimeter wave circular waveguide for all kinds of surface antennas is more
Mould triple channel tracks feed, is simultaneously operable in horizontal and vertical linear polarization, every kind of polarization all has and road, orientation and trim
The output of Lu Sanlu signal and road can carry out receiving the transmission of signal, and poor road signal may act on control antenna servo system, make day
Line rapid alignment target, and there is continuous automatic tracking capability.
The technical solution of the present invention is as follows:
A kind of millimeter wave circular waveguide multimode triple channel tracks feed, it is characterised in that: by multimode corrugated horn and feedback
Electric network composition, using multimode triple channel autotracking system, final output is received, 3 channels of orientation tracking and following in elevation are believed
Number；
The feeding network includes TE01 mode coupler, TE21 mode coupler, TM01 mode coupler, TE01 die combination net
Network, TE21 mould group and network, TM01 die combination network, poor channel synthesis network and the orthogonal device of TE11 mould；Each coupler is adopted
Structure is matched with main channel circular waveguide and the opposite symmetrical rectangular waveguide of main channel central axis；
Corrugated horn is connected by connecting flange with TE01 mode coupler, and TE01 mode coupler is defeated by four rectangular waveguides
Out, four rectangular waveguides are combined by TE01 die combination network, and the TE01 mould signal of output is connected to difference by phase shift elbow
Channel synthesizes on network；
It is TE21 mode coupler after TE01 die combination network, TE21 mode coupler uses two 45 degree orthogonal coupler structures
At, same section of circular waveguide simultaneously be coupled out TE21 mould and orthogonal TE21* mould, TE21 mode coupler is defeated by eight rectangular waveguides
Out, eight rectangular waveguides are combined by TE21 die combination network, and the TE21 mould and TE21* mould signal of output are curved by phase shift
Head is connected on poor channel synthesis network；
It is TM01 mode coupler after TE21 die combination network, TM01 mode coupler is exported by four rectangular waveguides, four squares
Shape waveguide is combined by TM01 die combination network, and the TM01 mould signal of output is directly connected on poor channel synthesis network；
Poor channel synthesis network output orientation tracking and two channel signals of following in elevation；
The orthogonal device of TE11 mould is connected to after poor channel synthesis network, exports receiving channel signal.
Further preferred embodiment, a kind of millimeter wave circular waveguide multimode triple channel tracking feed, it is characterised in that: institute
The radius R for stating the loudspeaker deutostoma circular waveguide of corrugated horn meets 1.64R >=λ max, and λ max is the cutoff wavelength of TE01 mould；And root
According to illumination angle and irradiation level, optimize bell mouth diameter, subtended angle, wave groove parameter, loudspeaker directional diagram is made the changes requirement such as to reach.
Further preferred embodiment, a kind of millimeter wave circular waveguide multimode triple channel tracking feed, it is characterised in that: institute
It states TE01 mode coupler to be made of the circular waveguide as main coupling line and the rectangular waveguide as secondary coupling line, in circular waveguide circumferential direction
Rectangular waveguide there are four being uniformly distributed；Four rectangular waveguide coupling arms realize the 0dB to TE01 mould in circular waveguide by coupling aperture
Coupling, and in circular waveguide main mould TE11 mould and other higher modes do not couple；
TE01 die combination network from the face rectangular waveguide E center by separating and two cover boards up and down of symmetrical machining pass through screw
Connection composition；Including multistage power splitter, every level-one power splitter is the Planar Magic-T being made of 3dB electric bridge and 90 degree of phase shift waveguides；；
TE01 die combination network has 4 entrances and one outlet, and entrance passes through H waveguide bend and TE01 mode coupler complementary wave export mouth phase
Even, outlet is connected to poor channel by phase shift elbow and synthesizes network.
Further preferred embodiment, a kind of millimeter wave circular waveguide multimode triple channel tracking feed, it is characterised in that: institute
It states TE21 mode coupler to be made of two 45 degree of orthogonal couplers, and two 45 degree of orthogonal couplers share one as master
The circular waveguide of coupling line, each coupler also have in circumferentially equally distributed four rectangular waveguides of circular waveguide, form eight altogether
In the circumferentially equally distributed rectangular waveguide of circular waveguide；Four rectangular waveguide coupling arms of one of coupler pass through coupling aperture reality
Now the 0dB of TE21 mould in circular waveguide is coupled, four rectangular waveguide coupling arms of another coupler pass through coupling aperture realization pair
The 0dB coupling of TE21* mould in circular waveguide；
TE21 die combination network is divided into upper layer combinational network and lower layer's combinational network, be respectively synthesized TE21 mould signal and
TE21* mould signal, every layer of combinational network are that separated from the face rectangular waveguide E center and symmetrical machining two cover boards up and down pass through spiral shell
Nail connection composition；
Every layer of combinational network includes multistage power splitter, and every level-one power splitter is to be made of 3dB electric bridge and 90 degree of phase shift waveguides
Planar Magic-T；Every layer of combinational network has 4 entrances and one outlet, and entrance is exported by H waveguide bend and corresponding coupler complementary wave
Mouth is connected, and outlet is connected to poor channel by phase shift elbow and synthesizes network.
Further preferred embodiment, a kind of millimeter wave circular waveguide multimode triple channel tracking feed, it is characterised in that: on
Layer combinational network and lower layer's combinational network are made of three layers of cover board altogether, wherein the upper table of the lower surface of cover plate of upper layer and inter panel
Face forms upper layer combinational network, and the lower surface of inter panel and the upper surface of lower layer's cover board form lower layer's combinational network.
Further preferred embodiment, a kind of millimeter wave circular waveguide multimode triple channel tracking feed, it is characterised in that: institute
It states TM01 mode coupler to be made of the circular waveguide as main coupling line and the rectangular waveguide as secondary coupling line, in circular waveguide circumferential direction
Rectangular waveguide there are four being uniformly distributed；Four rectangular waveguide coupling arms realize the 0dB to TM01 mould in circular waveguide by coupling aperture
Coupling, and other moulds in circular waveguide are not coupled；
TM01 die combination network is that separated from the face rectangular waveguide E center and symmetrical machining two cover boards up and down pass through screw
Connection composition；Including multistage power splitter, every level-one power splitter is the Planar Magic-T being made of 3dB electric bridge and 90 degree of phase shift waveguides；Group
Closing network has 4 entrances and one outlet, and entrance is connected by E waveguide bend with TM01 mode coupler complementary wave export mouth, and outlet is straight
Poor channel synthesis network is connect in succession.
Further preferred embodiment, a kind of millimeter wave circular waveguide multimode triple channel tracking feed, it is characterised in that: logical
It crosses and the size of the phase shift elbow used in TE01 mould, TE21 mould is adjusted, enable to TE01 mould, TE21 mould and TM01 mould
Amplitude and phase it is equal, network is synthesized by poor channel later and is carried out and difference operation, can be realized TE01 mould, TE21 mould and
Antenna pattern difference slope of TM01 mould etc. is changed.
Further preferred embodiment, a kind of millimeter wave circular waveguide multimode triple channel tracking feed, it is characterised in that: institute
It states poor channel synthesis network and realizes that composited waveguide evil spirit T includes multistage power splitter by composited waveguide evil spirit T, every level-one power splitter is
It is made of 3dB electric bridge and 90 degree of phase shift waveguides.
Beneficial effect
This feed realizes high-power threeway according to circular waveguide multimode autotracking principle, in millimeter wave frequency band (wavelength 8mm)
Autotracking function in road is compared with traditional more loudspeaker tri-channel systems, and in situation identical with efficiency, difference can be substantially improved
Efficiency increases radar single-pulse track precision and distance.In structure realization, design of Simulation is fully utilized and has been machined
At without welding, connection is simple, is suitable for batch production.In addition, if being further added by electric bridge all the way in poor channel synthesis network, also
The formation circular polarisation operating mode that can be convenient, and then expand the use field of the feed.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1: multimode feed combines block diagram；
Fig. 2: multimode autotracking Composite Signal schematic diagram；
Fig. 3: circular waveguide multimode triple channel tracks feed structure figure；
Fig. 4: corrugated horn structural schematic diagram；
Fig. 5: TE01 mode coupler structural schematic diagram；(a) axonometric drawing, (b) end view；
Fig. 6: TE01 mode coupler combination of network structure schematic diagram；(a) upper cover plate, (b) lower cover plate；
Fig. 7: TE21 mode coupler Circular waveguides schematic diagram；
Fig. 8: TE21 mode coupler combination of network structure schematic diagram；(a) upper layer combinational network upper cover plate, (b) upper layer is combined
Network lower cover plate, (c) lower layer's combinational network upper cover plate, (d) lower layer's combinational network lower cover plate；
Fig. 9: TM01 mode coupler Circular waveguides schematic diagram；
Figure 10: TM01 mode coupler combination of network structure schematic diagram；(a) upper cover plate, (b) lower cover plate；
Figure 11: phase shift elbow；
Figure 12: poor channel synthesizes network schematic diagram；
Figure 13: poor channel synthesizes schematic network structure；
Figure 14: orthogonal device structural schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment is exemplary, it is intended to it is used to explain the present invention, and
It is not considered as limiting the invention.
Multimode autotracking feed is made of multimode corrugated horn and feeding network, using multimode triple channel autotracking system,
It finally exports 3 channels: receiving, orientation tracks and following in elevation.Feeding network component mainly includes TE01 mode coupler, TE21
The portions such as mode coupler, TM01 mode coupler, TE01 die combination network, TE21 mould group and network, TM01 die combination network, orthogonal device
Part.Feed composition block diagram is as indicated with 1.
Circular waveguide multimode feed system is only by tri- kinds of differential modes of TE01, TE21, TM01 by that could generate orientation after synthesis
Tracking and following in elevation channel, this be from observing and controlling or communication monopulse antenna working system it is different, (tracking is logical on poor road
Road) composition principle is as shown in Figure 2.
In view of main channel and mould signal (TE11 mould) and difference mode signal (TE01, TE21, TM01) can transmit simultaneously, because
The size of this loudspeaker deutostoma circular waveguide, which must satisfy, can propagate institute's mode in need, consider the requirement of bandwidth of operation, and
Circular waveguide bore need to meet the requirement that frequency transmission signal is greater than waveguide cutoff frequency.According to cutoff frequency, entire feed network
It is sequentially TE01, TE21, TM01 coupler and the orthogonal device of TE11 mould in tandem, circular waveguide bore gradually becomes smaller, each coupling
There is round transition to connect between device, each coupler has been all made of main channel circular waveguide and opposite main channel central axis is symmetrical
The structure of four rectangular waveguides.
Circular waveguide multimode triple channel tracks feed structure as shown in figure 3, corrugated horn passes through connecting flange and TE01 mould coupling
Clutch is connected, and TE01 mode coupler is exported by four rectangular waveguides, and four rectangular waveguides are synthesized by TE01 die combination network
Come, the TE01 mould signal of output is connected on poor channel synthesis network by phase shift elbow.It is TE21 mould after TE01 die combination network
Coupler, it should be noted is that TE21 mode coupler is actually to be exactly using two 45 degree orthogonal couplers compositions
It is coupled out TE21 mould and orthogonal TE21* mould simultaneously in same section of circular waveguide section, TE21 mode coupler is defeated by eight rectangular waveguides
Out, eight rectangular waveguides are combined by TE21 die combination network, and the TE21 mould and TE21* mould signal of output are curved by phase shift
Head is connected on poor channel synthesis network.It is TM01 mode coupler after TE21 die combination network, TM01 mode coupler is by four rectangles
Waveguide output, four rectangular waveguides are combined by TM01 die combination network, and the TM01 mould signal of output is directly connected to difference
Channel synthesizes on network.The orthogonal device of TE11 mould is connected to behind poor channel synthesis network.
(1) corrugated horn
Corrugated horn can transmit and mould signal (TE11 mould) and difference mode signal (TE01, TE21, TM01), therefore loudspeaker simultaneously
The size of deutostoma circular waveguide must satisfy the institute's mode in need that can propagate, and the cutoff wavelength of TE01 mould is maximum, therefore loudspeaker
The radius R of deutostoma circular waveguide meets 1.64R >=λ max, and λ max is the cutoff wavelength of TE01 mould.According to illumination angle and irradiation electricity
It is flat, optimize bell mouth diameter, subtended angle, wave groove parameter, loudspeaker directional diagram is made the changes requirement such as to reach.Millimeter wave corrugated horn is wanted
Consider processing conditions, reasonable distribution wave groove and ripple tooth width, ripple loudspeaker as few as possible without using ring load or periodicity
Structural schematic diagram is as shown in Figure 4.
(2) TE01 mode coupler and combinational network
TE01 mode coupler is the modeling coupler that can select AD HOC, by the circular waveguide as main coupling line
Rectangular waveguide composition with as secondary coupling line, is circumferentially uniformly distributed in circular waveguide there are four rectangular waveguide；Its working principle is that
By selecting suitable waveguide dimensions, realize four rectangular waveguide coupling arms of periphery to TE01 in circular waveguide by coupling aperture
The 0dB of mould is coupled, and in circular waveguide main mould TE11 mould and other higher modes do not couple, the structural schematic diagram of coupler is as schemed
Shown in 5.
TE01 die combination network includes multistage power splitter, and every level-one power splitter is by 3dB electric bridge and 90 degree of phase shift waveguide structures
At Planar Magic-T；Its structural schematic diagram is as shown in Figure 6.It can guarantee good isolation between each input port using magic T,
When synthesizing triple channel for later differential mode, it is ensured that the cross-coupling performance in orientation and pitch channel.In view of millimeter wave
Working frequency range, to reduce loss, 3dB electric bridge uses waveguide form, and the waveguide cross-section size of millimeter wave is small, not easy to be processed,
Use the method for slab guide integration processing herein to realize, (face E center is not using separating from the face rectangular waveguide E center
Surface current is cut off, radiation loss will not be generated because of gap), and symmetrical machining, it is divided into two cover boards up and down, it can direct screw
It connects and does not have to welding,；TE01 die combination combination of network network has 4 entrances and one outlet, and entrance passes through H waveguide bend and coupling
Clutch complementary wave export mouth is connected, and one outlet is connected to poor channel by phase shift elbow and synthesizes network.
(3) TE21 mode coupler and combinational network
TE21 mode coupler is made of two 45 degree of orthogonal couplers, and two 45 degree of orthogonal couplers share one
As the circular waveguide of main coupling line, each coupler also has in circumferentially equally distributed four rectangular waveguides of circular waveguide, conformal
At eight in the circumferentially equally distributed rectangular waveguide of circular waveguide, Fig. 7 is seen；Four rectangular waveguide coupling arms of one of coupler
It is realized by coupling aperture and the 0dB of TE21 mould in circular waveguide is coupled, four rectangular waveguide coupling arms of another coupler pass through
Coupling aperture, which is realized, couples the 0dB of TE21* mould in circular waveguide；Practical is exactly to be coupled out TE21 mould simultaneously in same section of circular waveguide section
With orthogonal TE21* mould, longitudinal length and processing cost can be saved in this way.
TE21 die combination network is divided into two independent upper layer combinational networks and lower layer's combinational network, is respectively synthesized TE21 mould
Signal and TE21* mould signal, every layer of combinational network are separated from the face rectangular waveguide E center and symmetrical machining two cover boards up and down
It is connected by screw to composition；Every layer of combinational network includes multistage power splitter, and every level-one power splitter is by 3dB electric bridge and 90 degree of phase shifts
The Planar Magic-T that waveguide is constituted；Every layer of combinational network has 4 entrances and one outlet, and entrance passes through H waveguide bend and corresponding coupler
Complementary wave export mouth is connected, and one outlet is connected to poor channel by phase shift elbow and synthesizes network, as shown in Figure 8.
In processing, upper layer combinational network and lower layer's combinational network can be made of three layers of cover board, wherein under cover plate of upper layer
Surface and the upper surface of inter panel form upper layer combinational network, and the lower surface of inter panel and the upper surface of lower layer's cover board form
Lower layer's combinational network.
(4) TM01 mode coupler and combinational network
TM01 mode coupler is made of the circular waveguide as main coupling line and the rectangular waveguide as secondary coupling line, such as Fig. 9
It is shown, it is circumferentially uniformly distributed in circular waveguide there are four rectangular waveguide；Four rectangular waveguide coupling arms are realized by coupling aperture to circle
The 0dB coupling of TM01 mould in waveguide, and other moulds in circular waveguide are not coupled.
TM01 die combination network is that separated from the face rectangular waveguide E center and symmetrical machining two cover boards up and down pass through screw
Connection composition；Including multistage power splitter, every level-one power splitter is the Planar Magic-T being made of 3dB electric bridge and 90 degree of phase shift waveguides；Group
Closing network has 4 entrances and one outlet, and entrance is connected by E waveguide bend with coupler complementary wave export mouth, one outlet connection
Poor channel synthesizes network, as shown in Figure 10.
(5) phase shift elbow
The equal amplitude and phase of each difference mode signal are realized by phase shift waveguide, and phase shift waveguide has change waveguide long
Degree and the effect for eliminating dispersion, as shown in figure 11.The waveguide length of phase shift elbow can control path difference the one of center frequency point
In a wavelength, and the broadside of waveguide can broaden or narrow, and being broadened or being narrowed by broadside the bandwidth of operation of phases such as can increase.
So being adjusted by the size to the phase shift elbow used in TE01 mould, TE21 mould, so that TE01 mould, TE21 mould and TM01
The amplitude and phase of mould are equal, synthesize network progress and difference operation by poor channel later, realize TE01 mould, TE21 mould and TM01
Antenna pattern difference slope of mould etc. is changed.
(6) poor channel synthesizes network
Poor channel synthesis network realizes that composited waveguide evil spirit T includes multistage power splitter, every level-one function by composited waveguide evil spirit T
Dividing device is to be made of 3dB electric bridge and 90 degree of phase shift waveguides.Its schematic diagram is as shown in figure 12, and structure chart is as shown in figure 13.
(7) the orthogonal device of TE11 mould
Vertical polarization and horizontal polarization two-way and mould signal, orthomode coupler are formed by orthomode coupler with signal
The polarized wave mutually orthogonal for two is the element for separating either mixing for coming.OMT can identify public port
The independent signal of (generally circular waveguide or square wave guide) upper two orthogonal main moulds, and feed these to the base of single signal port
Mould matches all of the port, and has high Polarization discrimination capability analysis of active between two signals.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (8)
1. a kind of millimeter wave circular waveguide multimode triple channel tracks feed, it is characterised in that: by multimode corrugated horn and feeding network
Composition, using multimode triple channel autotracking system, final output is received, orientation tracks and 3 channel signals of following in elevation；
The feeding network include TE01 mode coupler, TE21 mode coupler, TM01 mode coupler, TE01 die combination network,
TE21 mould group and network, TM01 die combination network, poor channel synthesis network and the orthogonal device of TE11 mould；Each coupler is all made of master
Channel circular waveguide and the opposite symmetrical rectangular waveguide of main channel central axis match structure；
Corrugated horn is connected by connecting flange with TE01 mode coupler, and TE01 mode coupler is exported by four rectangular waveguides, and four
A rectangular waveguide is combined by TE01 die combination network, and the TE01 mould signal of output is connected to poor channel by phase shift elbow and closes
At on network；
It is TE21 mode coupler after TE01 die combination network, TE21 mode coupler is constituted using two 45 degree orthogonal couplers,
It is coupled out TE21 mould and orthogonal TE21* mould simultaneously in same section of circular waveguide, TE21 mode coupler is exported by eight rectangular waveguides,
Eight rectangular waveguides are combined by TE21 die combination network, and the TE21 mould and TE21* mould signal of output pass through phase shift elbow
It is connected on poor channel synthesis network；
It is TM01 mode coupler after TE21 die combination network, TM01 mode coupler is exported by four rectangular waveguides, four rectangular waves
TM01 die combination network was connected to combine, the TM01 mould signal of output is directly connected on poor channel synthesis network；
Poor channel synthesis network output orientation tracking and two channel signals of following in elevation；
The orthogonal device of TE11 mould is connected to after poor channel synthesis network, exports receiving channel signal.
2. a kind of millimeter wave circular waveguide multimode triple channel tracks feed according to claim 1, it is characterised in that: the ripple
The radius R of the loudspeaker deutostoma circular waveguide of loudspeaker meets 1.64R >=λ max, and λ max is the cutoff wavelength of TE01 mould；And according to irradiation
Angle and irradiation level, optimize bell mouth diameter, subtended angle, wave groove parameter, loudspeaker directional diagram are made the changes requirement such as to reach.
3. a kind of millimeter wave circular waveguide multimode triple channel tracks feed according to claim 1, it is characterised in that: the TE01
Mode coupler is made of the circular waveguide as main coupling line and the rectangular waveguide as secondary coupling line, and circumferential uniform point in circular waveguide
There are four rectangular waveguides for cloth；Four rectangular waveguide coupling arms realize the 0dB coupling to TE01 mould in circular waveguide by coupling aperture, and
To in circular waveguide main mould TE11 mould and other higher modes do not couple；
TE01 die combination network from the face rectangular waveguide E center by separating and two cover boards up and down of symmetrical machining are connected by screw to
Composition；Including multistage power splitter, every level-one power splitter is the Planar Magic-T being made of 3dB electric bridge and 90 degree of phase shift waveguides；；TE01
Die combination network has 4 entrances and one outlet, and entrance is connected by H waveguide bend with TE01 mode coupler complementary wave export mouth, out
Mouth is connected to poor channel by phase shift elbow and synthesizes network.
4. a kind of millimeter wave circular waveguide multimode triple channel tracks feed according to claim 1, it is characterised in that: the TE21
Mode coupler is made of two 45 degree of orthogonal couplers, and two 45 degree of orthogonal couplers share one and are used as main coupling line
Circular waveguide, each coupler also has in circumferentially equally distributed four rectangular waveguides of circular waveguide, forms eight altogether in circle wave
Lead circumferential equally distributed rectangular waveguide；Four rectangular waveguide coupling arms of one of coupler are realized by coupling aperture to circle
The 0dB coupling of TE21 mould, four rectangular waveguide coupling arms of another coupler are realized by coupling aperture to circular waveguide in waveguide
The 0dB of middle TE21* mould is coupled；
TE21 die combination network is divided into upper layer combinational network and lower layer's combinational network, is respectively synthesized TE21 mould signal and TE21* mould
Signal, every layer of combinational network are that separated from the face rectangular waveguide E center and symmetrical machining two cover boards up and down are connected by screw to
Composition；
Every layer of combinational network includes multistage power splitter, and every level-one power splitter be putting down of being made of 3dB electric bridge and 90 degree of phase shift waveguides
Face evil spirit T；Every layer of combinational network has 4 entrances and one outlet, and entrance passes through H waveguide bend and corresponding coupler complementary wave export mouth phase
Even, outlet is connected to poor channel by phase shift elbow and synthesizes network.
5. a kind of millimeter wave circular waveguide multimode triple channel tracks feed according to claim 4, it is characterised in that: upper layer combination
Network and lower layer's combinational network are made of three layers of cover board altogether, and wherein the lower surface of cover plate of upper layer and the upper surface of inter panel form
Upper layer combinational network, the lower surface of inter panel and the upper surface of lower layer's cover board form lower layer's combinational network.
6. a kind of millimeter wave circular waveguide multimode triple channel tracks feed according to claim 1, it is characterised in that: the TM01
Mode coupler is made of the circular waveguide as main coupling line and the rectangular waveguide as secondary coupling line, and circumferential uniform point in circular waveguide
There are four rectangular waveguides for cloth；Four rectangular waveguide coupling arms realize the 0dB coupling to TM01 mould in circular waveguide by coupling aperture, and
Other moulds in circular waveguide are not coupled；
TM01 die combination network is that separated from the face rectangular waveguide E center and symmetrical machining two cover boards up and down are connected by screw to
Composition；Including multistage power splitter, every level-one power splitter is the Planar Magic-T being made of 3dB electric bridge and 90 degree of phase shift waveguides；Combinational network
Network has 4 entrances and one outlet, and entrance is connected by E waveguide bend with TM01 mode coupler complementary wave export mouth, and outlet directly connects
Connect poor channel synthesis network.
7. a kind of millimeter wave circular waveguide multimode triple channel tracks feed according to claim 1, it is characterised in that: by right
The size of the phase shift elbow used in TE01 mould, TE21 mould is adjusted, and enables to the width of TE01 mould, TE21 mould and TM01 mould
Degree is equal with phase, synthesizes network progress and difference operation by poor channel later, can be realized TE01 mould, TE21 mould and TM01 mould
Antenna pattern difference slope etc. change.
8. a kind of millimeter wave circular waveguide multimode triple channel tracks feed according to claim 1, it is characterised in that: the difference is logical
Road synthesizes network and is realized by composited waveguide evil spirit T, and composited waveguide evil spirit T includes multistage power splitter, and every level-one power splitter is by 3dB electricity
Bridge and 90 degree of phase shift waveguides are constituted.
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| CN112952398B (en) * | 2021-02-21 | 2022-08-02 | 中国电子科技集团公司第二十二研究所 | Double-channel Ku waveband receiving antenna |
| CN114639964A (en) * | 2022-03-09 | 2022-06-17 | 四创电子股份有限公司 | Foldable feed source system of integrated monopulse measurement and control radar antenna |
| CN114639964B (en) * | 2022-03-09 | 2024-05-31 | 四创电子股份有限公司 | Foldable feed source system of integrated single-pulse measurement and control radar antenna |
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