CN109066091A - Ku/Ka Double frequency feed source component and antenna - Google Patents
Ku/Ka Double frequency feed source component and antenna Download PDFInfo
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- CN109066091A CN109066091A CN201810887793.1A CN201810887793A CN109066091A CN 109066091 A CN109066091 A CN 109066091A CN 201810887793 A CN201810887793 A CN 201810887793A CN 109066091 A CN109066091 A CN 109066091A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
- H01Q5/55—Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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Abstract
The present invention provides a kind of Ku/Ka Double frequency feed source component and antenna, which includes sequentially connected double frequency loudspeaker, Ku feed network and Ka feed network；Double frequency loudspeaker add the structure type of longitudinal slot using circular cone flare angle variation, can work and receive, in Ku transmitting, Ka reception and Ka four wave bands of transmitting in Ku；Ku feed network uses four arm waveguiding structure of symmetric form, mainly receives network by Ku coupler, Ku and Ku transmitting network forms, and it is mutually orthogonal linear polarization that Ku, which receives network and Ku transmitting network,；Ka feed network includes the sequentially connected channel Ka joint, Ka circular polarizer, Ka coupler, Ka receives waveguide bend one, Ka receives twisted waveguide, Ka hair resistance filter, Ka emit waveguide bend one and Ka duplexer, and Ka is received and Ka transmitting is circular polarisation.Feed network of the present invention is simple, double frequency integral structure is compact, performance indicator is excellent, can preferably match with small-bore reflecting satellite communication surface antenna.
Description
Technical field
The present invention relates to technical field of satellite communication, more particularly, to a kind of Ku/Ka Double frequency feed source component and antenna.
Background technique
Feed component is the most important component part of satellite communication antena, is the channel received with electromagnetic signals,
Its performance superiority and inferiority influences the performance of entire satellite communication antena, to influence the signal transmission performance of satellite communication system.With
The development of technology, the frequency ranges such as traditional C, X, Ku cannot fully meet the demand of satellite communication applications, and Ka band bandwidth it is wide,
Capacity is big, interference is few, and Ku band satellite is resourceful, adaptable.Therefore, the satellite that can be worked at the same time in Ku/Ka frequency range leads to
Believe that antenna has very big advantage.To realize Ku/Ka double frequency high performance operation, then high performance Ku/Ka double frequency feedback is needed
Source component.Structure is complicated for existing feed network, size is big, performance indicator is not good enough, can not be with small-bore reflecting satellite communication face
Antenna match.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of Ku/Ka Double frequency feed source component and antenna, to improve feed net
The communication performance index and working efficiency of network.
In a first aspect, Double frequency feed source component includes successively the embodiment of the invention provides a kind of Ku/Ka Double frequency feed source component
Double frequency loudspeaker, Ku feed network and the Ka feed network of connection；Double frequency loudspeaker add the structure shape of longitudinal slot using circular cone flare angle variation
Formula can work and receive, in Ku transmitting, Ka reception and Ka four wave bands of transmitting in Ku；Ku feed network uses four arm wave of symmetric form
Guide structure mainly receives network by Ku coupler, Ku and Ku transmitting network forms, and it is mutual that Ku, which receives network and Ku transmitting network,
Orthogonal linear polarization；Ka feed network include the sequentially connected channel Ka joint, Ka circular polarizer, Ka coupler, Ka receive it is curved
Waveguide one, Ka receive twisted waveguide, Ka hair resistance filter, Ka transmitting waveguide bend one and Ka duplexer, and Ka is received and Ka transmitting is
Circular polarisation.
It further, is circular waveguide transition structure, circular waveguide among the Ku coupler of above-mentioned Ku/Ka Double frequency feed source component
Transition structure is used for transmission the electromagnetic wave signal of Ka frequency range；Four size phases are offered on the four direction of the side wall of Ku coupler
Same coupling slot, four coupling slots are divided into two groups, and corresponding two are one group；Wherein one group of coupling slot and Ku receive network and connect
It connects；Another group of coupling slot and Ku transmitting are connected to the network；Two groups of coupling slots form mutually orthogonal horizontal polarized wave and vertical polarization
Wave.
Further, the Ku of above-mentioned Ku/Ka Double frequency feed source component receives network and includes two group of branches components, is sequentially connected
Ku receive combiner, Ku receive waveguide bend two and Ku hair resistance filter；Each branch component includes sequentially connected Ku branch
Filter, Ku receive branch-waveguide and Ku receives waveguide bend one；Ku in each branch component receive waveguide bend one respectively with Ku
The two points of ports received on combiner connect；Ku branching filter is for filtering out the electromagnetic wave of Ka frequency range；Ku hair resistance filtering
Device is low-pass filter, to degree of suppression >=70dB of Ku transmitting frequency range electromagnetic wave.
Further, the Ku transmitting network of above-mentioned Ku/Ka Double frequency feed source component includes two group of branches components, is sequentially connected
Ku transmitting combining unit, Ku transmitting waveguide bend two, Ku transmitting waveguide bend three, Ku transmitting waveguide bend four, Ku transmitting joint and Ku receive
Hinder filter；Each branch component includes sequentially connected Ku branching filter, Ku transmitting branch-waveguide and Ku transmitting waveguide bend
One；Ku transmitting waveguide bend one in each branch component is connect with two points of ports on Ku transmitting combining unit respectively；Ku transmitting
Joint is kept fixed the transmitting waveguide network of rear end for the rotation of polaxis to be isolated using L-type waveguide junction；Ku
Receiving resistance filter is high-pass filter, and degree of suppression >=70dB of frequency range is received to Ku.
Further, the channel the Ka joint of above-mentioned Ku/Ka Double frequency feed source component includes that the channel Ka rotor and the channel Ka are fixed
Son；The channel Ka rotor is connect with Ku coupler, and the channel Ka stator is connect with Ka circular polarizer；The channel Ka joint is for being isolated polarization
The rotation of axis is kept fixed entire Ka feed network.
Further, the Ka coupler of above-mentioned Ku/Ka Double frequency feed source component uses orthogonal coupled structure；Ka coupler
Inner cavity is circle square transition；The round flange of Ka coupler is connected on Ka circular polarizer；Side arm mouth and straight is provided on Ka coupler
Port；Side arm mouth is receiving channel, and straightthrough port is transmission channel；Ka in side arm mouth and Ka feed network receive waveguide bend one,
Ka receives twisted waveguide and Ka hair resistance filter is sequentially connected；Ka transmitting waveguide bend one and Ka in straightthrough port and Ka feed network is bis-
Work device is sequentially connected；Ka hair resistance filter is bandpass filter, to degree of suppression >=57dB of Ka transmitting frequency range.
Further, the Ka circular polarizer of above-mentioned Ku/Ka Double frequency feed source component and the positional relationship of Ka coupler are as follows:
It is looked over from the straightthrough port of Ka coupler, with front-right is 0 °, is counterclockwise positive, when Ka coupler side arm mouth is 180 ° of positions
When setting, the dielectric barrier of Ka circular polarizer is on+45 ° or -135 ° of directions.
Further, the double frequency loudspeaker of above-mentioned Ku/Ka Double frequency feed source component are fixed on the upper port of Ku coupler；Ka feedback
Source network is fixed on the lower port of Ku coupler；Ku receives the side that network is fixed on Ku coupler, and Ku transmitting network is fixed on
The other side of Ku coupler forms a complete Ku/Ka Double frequency feed source component.
Second aspect, the embodiment of the invention provides a kind of Ku/Ka Double frequency feed source antenna, antenna includes above-mentioned Ku/Ka
Double frequency feed source component further includes the antenna main reflector and subreflector of matching connection.
The embodiment of the present invention bring it is following the utility model has the advantages that
Feed network of the present invention is simple, double frequency integral structure is compact, performance indicator is excellent, can preferably defend with small-bore
Star communicates reflector antenna matching.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of composition schematic diagram of Ku/Ka Double frequency feed source component provided in an embodiment of the present invention；
Fig. 2 is a kind of three-dimensional view of Ku/Ka Double frequency feed source component provided in an embodiment of the present invention；
Fig. 3 is a kind of front view of Ku/Ka Double frequency feed source component provided in an embodiment of the present invention；
Fig. 4 is the main view of double frequency loudspeaker provided in an embodiment of the present invention；
Fig. 5 is the cross-sectional view of double frequency loudspeaker provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of Ku feed network provided in an embodiment of the present invention；
Fig. 7 is the three-dimensional view of Ku coupler provided in an embodiment of the present invention；
Fig. 8 is the cross-sectional view of Ku coupler provided in an embodiment of the present invention；
Fig. 9 is the three-dimensional view that Ku provided in an embodiment of the present invention receives network；
Figure 10 is the three-dimensional view that Ku provided in an embodiment of the present invention emits network；
Figure 11 is the three-dimensional view that Ku provided in an embodiment of the present invention emits joint；
Figure 12 is the structural schematic diagram of Ka feed network provided in an embodiment of the present invention；
Figure 13 is the three-dimensional view in the channel Ka provided in an embodiment of the present invention joint；
Figure 14 is the three-dimensional view of Ka coupler provided in an embodiment of the present invention；
Figure 15 is Ka circular polarizer provided in an embodiment of the present invention and Ka coupler assembling relationship figure；
Figure 16 is that double frequency loudspeaker Ku provided in an embodiment of the present invention receives return loss plot；
Figure 17 is that double frequency loudspeaker Ku provided in an embodiment of the present invention emits return loss plot；
Figure 18 is that double frequency loudspeaker Ka provided in an embodiment of the present invention receives return loss plot；
Figure 19 is that double frequency loudspeaker Ka provided in an embodiment of the present invention emits return loss plot；
Figure 20 is that double frequency loudspeaker Ku provided in an embodiment of the present invention receives antenna pattern (@12.5GHz)；
Figure 21 is that double frequency loudspeaker Ku provided in an embodiment of the present invention emits antenna pattern (@14.25GHz)；
Figure 22 is that double frequency loudspeaker Ka provided in an embodiment of the present invention receives antenna pattern (@20.4GHz)；
Figure 23 is that double frequency loudspeaker Ka provided in an embodiment of the present invention emits antenna pattern (@30.2GHz)；
Icon: 1- double frequency loudspeaker；2-Ku feed network；3-Ka feed network；21-Ku coupler；22-Ku receives network；
23-Ku emits network；The channel 31-Ka joint；32-Ka circular polarizer；33-Ka coupler；34-Ka receives waveguide bend one；35-Ka
Receive twisted waveguide；36-Ka hair resistance filter；37-Ka emits waveguide bend one；38-Ka duplexer；221-Ku branching filter；
222-Ku receives branch-waveguide；223-Ku receives waveguide bend one；224-Ku receives combiner；225-Ku receives waveguide bend two；
226-Ku hair resistance filter；231-Ku emits branch-waveguide；232-Ku emits waveguide bend one；233-Ku transmitting combining unit；234-
Ku emits waveguide bend two；235-Ku emits waveguide bend three；236-Ku emits waveguide bend four；237-Ku emits joint；238-Ku is received
Hinder filter；The channel 311-Ka rotor；The channel 312-Ka stator；321- dielectric barrier；331- side arm mouth；332- straightthrough port；
2371-Ku emits rotor；2372-Ku emits stator.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Currently, country's Ku/Ka Double frequency feed source component can be summarized as following three kinds: switch type feed component；Coaxial nested
Feed component；The one-piece type feed component of complex network.
Switch type Ku/Ka Double frequency feed source component studies in China is more early, science and technology group of China Electronics the 39th, 54 research institutes, west
The units such as the peace industry of space flight fixed star science and technology (group) company have relevant product to release.Switch type Ku/Ka Double frequency feed source component
It is divided into double horn dual network switch type and single two kinds of switch type of loudspeaker dual network.There is collection in switch type Ku/Ka Double frequency feed source component
At spend low, poor reliability, mutually block, index is bad the problems such as, belong to more backward technology scheme, be phased out.
Coaxial nested Ku/Ka Double frequency feed source component, using wave groove loudspeaker, Ka frequency range uses the medium of circular waveguide load
Spike antenna is nested in the Ku network using waveguiding structure.The domestic and international Jun You relevant unit of the program conducts a research, Yang Zhiyou etc.
People has submitted a kind of Ku/Ka two waveband transmit-receive sharing feed using the coaxial nested on March 14th, 2012.This is coaxial embedding
Set type Ku/Ka Double frequency feed source kit form is novel, and structure is more compact, but there are feed low efficiency, axis than greatly, standing wave it is poor etc.
Problem, the consistency of dielectric material also it is difficult to ensure that, practical application.
Complex network type Ku/Ka double frequency integration feed component, for single loudspeaker dual network structure.Ku network uses four arms pair
Claim waveguiding structure, Ka network also uses the symmetrical waveguide of four arms to add double-circle polarization device structure, additional two waveguide match loads.This is multiple
Miscellaneous network-type Ku/Ka double frequency integration feed component performance indexes is excellent.But the complicated network structure, longitudinal ruler modest ability, life
It produces at high cost, small-bore reflector antenna can not be well matched with.In addition in dual four arms waveguiding structure, the consistency of side arm,
Assembly precision requires height, and otherwise the indexs such as the cross polarization of feed, axis ratio can obviously deteriorate.
In view of feed network is complicated, structure size is big in existing technology, poor performance, can not be well matched with osculum
The problems such as diameter reflecting satellite communication surface antenna.The present invention provides a kind of Ku/Ka Double frequency feed source component and antenna, the technology and can answer
For in the occasions such as vehicle-mounted, boat-carrying, airborne communication in moving, which can to use relevant hardware realization, below by embodiment
It is described.
The composition schematic diagram of Ku/Ka Double frequency feed source component shown in Figure 1；The Double frequency feed source component includes being sequentially connected
Double frequency loudspeaker 1, Ku feed network 2 and Ka feed network 3；Double frequency loudspeaker 1 add the structure shape of longitudinal slot using circular cone flare angle variation
Formula can work and receive, in Ku transmitting, Ka reception and Ka four wave bands of transmitting in Ku；Ku feed network 2 uses four arm wave of symmetric form
Guide structure mainly receives network 22 by Ku coupler 21, Ku and Ku transmitting network 23 forms, and Ku receives network 22 and Ku launch network
Network 23 is mutually orthogonal linear polarization；Ka feed network 3 includes the sequentially connected channel Ka joint 31, Ka circular polarizer 32, Ka
Coupler 33, Ka receive waveguide bend 1, Ka receives twisted waveguide 35, Ka hair resistance filter 36, Ka emit waveguide bend 1 and Ka
Duplexer 38, Ka is received and Ka transmitting is circular polarisation.
Fig. 2 and Fig. 3 is respectively the three-dimensional view and front view of Ku/Ka Double frequency feed source component, it follows that the Ku/Ka is bis-
Frequency feed component, the feed waveguide network for being designed and being simplified using single loudspeaker double frequency shared are simultaneously operable in Ku reception, Ku hair
It penetrates, Ka reception and Ka emit in four frequency ranges, and be not necessarily to switching.The double frequency loudspeaker add the shape of longitudinal slot using circular cone flare angle variation
Main view and the cross-sectional view difference of formula, double frequency loudspeaker are as shown in Figure 4 and Figure 5, and double frequency loudspeaker have preferable in working frequency range
The performances such as wave beam.
The structural schematic diagram of Ku feed network shown in Figure 6；Know that Ku feed network 2 is connect by Ku coupler 21, Ku
It receives network 22 and Ku transmitting network 23 forms.
Fig. 7 and Fig. 8 is respectively the three-dimensional view and cross-sectional view of Ku coupler；It is circular waveguide transition among the Ku coupler 21
Structure, circular waveguide transition structure are used for transmission the electromagnetic wave signal of Ka frequency range；It is opened on the four direction of the side wall of Ku coupler 21
Equipped with the identical coupling slot of four sizes, four coupling slots are divided into two groups, and corresponding two are one group；Wherein one group of coupling slot
Network 22 is received with Ku to connect；Another group of coupling slot is connect with Ku transmitting network 23；Two groups of coupling slots form mutually orthogonal water
Flat polarized wave and vertically polarized wave.
Fig. 9 is the three-dimensional view that Ku receives network；Ku receives network 22 and connects including two group of branches components, sequentially connected Ku
Receive combiner 224, Ku receives waveguide bend 2 225 and Ku hair resistance filter 226；Each branch component includes sequentially connected Ku points
Branch filter 221, Ku receive branch-waveguide 222 and Ku receives waveguide bend 1；Ku in each branch component receives waveguide bend
One 223, which receive two points of ports on combiner 224 with Ku respectively, connect；Ku branching filter 221 is used for the electricity of Ka frequency range
Magnetic wave filters out；Ku hair resistance filter 226 is low-pass filter, to degree of suppression >=70dB of Ku transmitting frequency range electromagnetic wave.
The receiving end Ku (KuRx) is BJ120 standard waveguide mouth, connects Ku LNB (Ku low noise and down coversion in actual use
Device), Ku transmitting terminal (KuTx) is BJ120 standard waveguide mouth, connects Ku BUC (Ku up-conversion and power amplification in actual use
Device).
Figure 10 is the three-dimensional view that Ku emits network；It includes two group of branches components, sequentially connected that the Ku, which emits network 23,
Ku transmitting combining unit 233, Ku transmitting waveguide bend 2 234, Ku transmitting waveguide bend 3 235, Ku transmitting waveguide bend 4 236, Ku transmitting
Joint 237 and Ku receive resistance filter 238；Each branch component includes sequentially connected Ku branching filter 221, Ku transmitting branch
Waveguide 231 and Ku emit waveguide bend 1；Ku transmitting waveguide bend 1 in each branch component emits with Ku respectively to be combined
Two points of ports on device 233 connect；Ku emits joint 237 and uses L-type waveguide junction, for the rotation of polaxis to be isolated
Turn, be kept fixed the transmitting waveguide network of rear end, the three-dimensional view that Ku emits joint is as shown in figure 11；Wherein, Ku transmitting is closed
Section 237 is L-type waveguide junction, including Ku transmitting rotor 2371 and Ku emit 2372 two parts of stator；Ku receives resistance filter
For high-pass filter, degree of suppression >=70dB of frequency range is received to Ku.
Figure 12 is the structural schematic diagram of Ka feed network provided in an embodiment of the present invention；The channel Ka of the Ka feed network 3
Joint includes the channel Ka rotor 311 and the channel Ka stator 312；The channel Ka rotor 311 is connect with Ku coupler 21, the channel Ka stator
312 connect with Ka circular polarizer 32；The channel Ka joint 31 is used to be isolated the rotation of polaxis, and entire Ka feed network is made to keep solid
It is fixed.It under the premise of guaranteeing superperformance index, can farthest simplify Ka feed network, it is symmetrical to avoid four traditional arms
The problems such as structure adds the complicated network structure caused by the scheme of double-circle polarization device, longitudinal ruler modest ability, consistency is bad.
Figure 13 and Figure 14 is respectively the three-dimensional view in the channel Ka joint and Ka coupler；The Ka coupler 33 uses corss coupling
Close structure；The inner cavity of Ka coupler 33 is circle square transition；The round flange of Ka coupler 33 is connected on Ka circular polarizer 32；Ka coupling
Side arm mouth 331 and straightthrough port 332 are provided in clutch 33；Side arm mouth 331 is receiving channel, and straightthrough port 332 is transmission channel；Side
Ka in arm mouth 331 and Ka feed network 3 receives waveguide bend 1, Ka receives twisted waveguide 35 and Ka hair resistance filter 36 successively connects
It connects；Ka transmitting waveguide bend 1 and Ka duplexer 38 in straightthrough port 332 and Ka feed network 3 are sequentially connected；Ka hair resistance filtering
Device 36 is bandpass filter, to degree of suppression >=57dB of Ka transmitting frequency range；
The receiving end Ka (KaRx) is BJ220 standard waveguide mouth, connects Ka LNB (Ka low noise block downconverter) in actual use.
Ka transmitting terminal (KaTx) is BJ320 standard waveguide mouth, connects Ka BUC (Ka up-conversion and power amplifier) in actual use.
Figure 15 is Ka circular polarizer and Ka coupler assembling relationship figure；The position of the Ka circular polarizer 32 and Ka coupler 33
Relationship is as follows: looking over from the straightthrough port of Ka coupler 33, with front-right is 0 °, is counterclockwise positive, when Ka coupler 33
For side arm mouth 331 at 180 ° of positions, the dielectric barrier 321 of Ka circular polarizer 32 is on+45 ° or -135 ° of directions.
As illustrated in figs. 16-19, double frequency loudspeaker Ku receive (12.25~12.75GHz), Ku transmitting (14~14.5GHz),
Ka receives return loss >=22.5dB in (19.6~21.2GHz) and Ka transmitting (29.4~31GHz) four frequency ranges, is converted into
Voltage standing wave ratio≤1.2.
As depicted in figs. 20-23, double frequency loudspeaker receive (@12.5GHz), Ku transmitting (@14.25GHz), Ka reception (@in Ku
20.4GHz) and in Ka transmitting (@30.2GHz) four frequency ranges: illumination angle ± 29 °, edge illumination about -11~-13.5dB of level,
Cross polarization≤- 34dB in wave beam, index are excellent.
The double frequency loudspeaker 1 of Ku/Ka Double frequency feed source component provided in an embodiment of the present invention are fixed on the upper end of Ku coupler 21
Mouthful；Ka feed network 3 is fixed on the lower port of Ku coupler 21；Ku receives the side that network 22 is fixed on Ku coupler 21, Ku
Transmitting network 23 is fixed on the other side of Ku coupler 21, forms a complete Ku/Ka Double frequency feed source component.The Ku/Ka is bis-
Frequency feed component in working frequency range there is good wave beam etc. to change performance, Ku cross polarization isolation≤- 40dB (axial direction), Ka
Axis ratio≤1dB (axial direction), voltage standing wave ratio≤1.3, interport isolation >=90dB are made whole by the layout designs of compact and reasonable
The envelope of a feed network top half is small as far as possible, convenient for integrated, solve in the prior art network is complicated, structure size is big,
Poor performance can not be well matched with the problem of small-bore reflecting satellite communication surface antenna.
The embodiment of the invention provides a kind of Ku/Ka Double frequency feed source antenna, which includes above-mentioned Ku/Ka Double frequency feed source
Component further includes the antenna main reflector and subreflector of matching connection.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.To those skilled in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Finally, it should be noted that above embodiments, only a specific embodiment of the invention, to illustrate skill of the invention
Art scheme, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to the present invention into
Go detailed description, it should be understood by those skilled in the art that: anyone skilled in the art takes off in the present invention
In the technical scope of dew, it can still modify to technical solution documented by previous embodiment or can readily occur in change
Change or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make relevant art
Scheme essence be detached from technical solution of the embodiment of the present invention spirit and scope, should all cover protection scope of the present invention it
It is interior.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (9)
1. a kind of Ku/Ka Double frequency feed source component, which is characterized in that the Double frequency feed source component includes sequentially connected double frequency loudspeaker
, Ku feed network and Ka feed network；The double frequency loudspeaker add the structure type of longitudinal slot using circular cone flare angle variation, can work
It is received, in Ku transmitting, Ka reception and Ka four wave bands of transmitting in Ku；
The Ku feed network uses four arm waveguiding structure of symmetric form, mainly receives network and Ku launch network by Ku coupler, Ku
Network composition, it is mutually orthogonal linear polarization that the Ku, which receives network and Ku transmitting network,；
The Ka feed network includes the sequentially connected channel Ka joint, Ka circular polarizer, Ka coupler, Ka reception waveguide bend
One, Ka receives twisted waveguide, Ka hair resistance filter, Ka transmitting waveguide bend one and Ka duplexer, and Ka is received and Ka transmitting is entelechy
Change.
2. Ku/Ka Double frequency feed source component according to claim 1, which is characterized in that be circle wave among the Ku coupler
Transition structure is led, the circular waveguide transition structure is used for transmission the electromagnetic wave signal of Ka frequency range；
The identical coupling slot of four sizes is offered on the four direction of the side wall of the Ku coupler, four coupling slots are drawn
It is divided into two groups, corresponding two are one group；
Wherein one group of coupling slot and the Ku, which are received, is connected to the network；Another group of coupling slot and Ku transmitting are connected to the network；Two groups
Coupling slot forms mutually orthogonal horizontal polarized wave and vertically polarized wave.
3. Ku/Ka Double frequency feed source component according to claim 1, which is characterized in that it includes two groups that the Ku, which receives network,
Branch component, sequentially connected Ku receive combiner, Ku receives waveguide bend two and Ku hair resistance filter；Each branch component includes
Sequentially connected Ku branching filter, Ku receive branch-waveguide and Ku receives waveguide bend one；
The Ku in each branch component receives waveguide bend one and connects respectively with two points of ports on Ku reception combiner
It connects；
The Ku branching filter is for filtering out the electromagnetic wave of Ka frequency range；The Ku hair resistance filter is low-pass filter, right
Degree of suppression >=70dB of Ku transmitting frequency range electromagnetic wave.
4. Ku/Ka Double frequency feed source component according to claim 1, which is characterized in that the Ku transmitting network includes two groups
Branch component, sequentially connected Ku transmitting combining unit, Ku emit waveguide bend two, Ku emits waveguide bend three, Ku emits waveguide bend four,
Ku emits joint and Ku receives resistance filter；Each branch component includes sequentially connected Ku branching filter, Ku transmitting branch's wave
It leads and emits waveguide bend one with Ku；
Ku transmitting waveguide bend one in each branch component connects with two points of ports on the Ku transmitting combining unit respectively
It connects；
The transmitting joint Ku makes the transmitted wave wire guide of rear end for the rotation of polaxis to be isolated using L-type waveguide junction
Network is kept fixed；It is high-pass filter that the Ku, which receives resistance filter, and degree of suppression >=70dB of frequency range is received to Ku.
5. Ku/Ka Double frequency feed source component according to claim 1, which is characterized in that the channel Ka joint includes Ka logical
Road rotor and the channel Ka stator；The channel Ka rotor is connect with the Ku coupler, the channel Ka stator and Ka circle
Polarizer connection；The channel Ka joint is used to be isolated the rotation of polaxis, is kept fixed entire Ka feed network.
6. Ku/Ka Double frequency feed source component according to claim 1, which is characterized in that the Ka coupler uses corss coupling
Close structure；The inner cavity of the Ka coupler is circle square transition；The round flange of the Ka coupler is connected to the Ka circular polarizer
On；
Side arm mouth and straightthrough port are provided on the Ka coupler；The side arm mouth is receiving channel, and the straightthrough port is transmitting
Channel；
Ka in the side arm mouth and the Ka feed network receives waveguide bend one, Ka receives twisted waveguide and Ka hair resistance filter according to
Secondary connection；
The straightthrough port emits waveguide bend one with the Ka in the Ka feed network and Ka duplexer is sequentially connected；
The Ka hair resistance filter is bandpass filter, to degree of suppression >=57dB of Ka transmitting frequency range.
7. Ku/Ka Double frequency feed source component according to claim 6, which is characterized in that the Ka circular polarizer and the Ka
The positional relationship of coupler is as follows:
It is looked over from the straightthrough port of the Ka coupler, with front-right is 0 °, is counterclockwise positive, when Ka coupler side
For arm mouth at 180 ° of positions, the dielectric barrier of the Ka circular polarizer is on+45 ° or -135 ° of directions.
8. Ku/Ka Double frequency feed source component according to claim 1, which is characterized in that the double frequency loudspeaker are fixed on described
The upper port of Ku coupler；The Ka feed network is fixed on the lower port of the Ku coupler；The Ku receives network and fixes
In the side of the Ku coupler, the Ku transmitting network is fixed on the other side of the Ku coupler, forms one completely
Ku/Ka Double frequency feed source component.
9. a kind of Ku/Ka Double frequency feed source antenna, which is characterized in that the antenna includes the described in any item Ku/ of claim 1-8
Ka Double frequency feed source component further includes the antenna main reflector and subreflector of matching connection.
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| CN114204267A (en) * | 2021-11-30 | 2022-03-18 | 中国电子科技集团公司第五十四研究所 | Miniaturized multi-frequency shared circularly polarized coaxial feed source network |
| CN115513671A (en) * | 2022-08-26 | 2022-12-23 | 西安空间无线电技术研究所 | Ka ultra wide band transmitting-receiving integrated special-shaped choking compact low-PIM feed system |
| CN116192232A (en) * | 2023-02-17 | 2023-05-30 | 陕西兴际通通信有限公司 | Ka, ku automatic portable station conversion feed source communication system |
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