CN209641840U - A kind of feed network of two-band multiplex antenna - Google Patents
A kind of feed network of two-band multiplex antenna Download PDFInfo
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- CN209641840U CN209641840U CN201822136876.5U CN201822136876U CN209641840U CN 209641840 U CN209641840 U CN 209641840U CN 201822136876 U CN201822136876 U CN 201822136876U CN 209641840 U CN209641840 U CN 209641840U
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Abstract
The utility model provides a kind of feed network of two-band multiplex antenna, including double frequency shared loudspeaker, channel-splitting filter, linear polarization signal transmitting network, linear polarization signal receive network, single channel rotary joint, circular polarizer and Ka band duplexer and be composed.Channel-splitting filter is for separating circularly polarized signal channel and linear polarization signal path, and wherein by center shaft channel, linear polarization signal carries out integrated separation by four side walls and synthesizes again circularly polarized signal.Two are used for the receiving channel of linear polarization signal in four side walls, other two is used for linear polarization signal transmission channel.The utility model is simple and compact for structure, switches feed without space, high reliablity, performance is stablized, and can realize that two kinds of frequency ranges work at the same time state.
Description
Technical field
The utility model relates to satellite antenna field more particularly to a kind of feed networks of two-band multiplex antenna.
Background technique
With to satellite communication channel capacity requirement increase sharply and increasingly crowded, the satellite communication day of Ku frequency range business
Linear system system increases sharply for the use demand of Ka frequency range.Currently, most of boat-carryings, vehicle-mounted, onboard satellite communications antenna system,
Often under the premise of retaining Ku band communication demand, the use demand for Ka band satellite communication is realized.
For antenna for satellite communication in motion, how simply and effectively to realize feed network (transmitting surface antenna) channeling, be current row
The direction studied for a long time in the industry.The feed network of small-bore dual reflector antenna in antenna for satellite communication in motion, in structure
It is required that networked projection's area is as small as possible, feed cannot be caused to block.
For the double frequency multiplexing feed network of small-bore dual reflector antenna, there are mainly two types of modes both at home and abroad: one is adopt
With two sets of feed network systems independent, feed network is replaced by artificial or electronic mode.Another kind is using altogether
Two-band use demand is realized by manually or electrically mode switched feed channel with a loudspeaker.Both the above scheme is deposited
It is in shortcoming: either using artificial or electronic mode, is required to spatially switch feed, so can only realizes point
Shi Fuyong cannot achieve two-band and work at the same time, meanwhile, space switching feed shortens the service life of product, reduces and is
The reliability of system.Inconvenient for operation in addition, although manual type structure is simple；Electronic mode is although easy to operate, still
Structure is complicated, and two feed networks block mutually, influences the aperture efficiency and directional diagram of reflector antenna.
In view of this, it is necessary to feed network in the prior art be improved, to solve the above problems.
Summary of the invention
The utility model provides a kind of feed network of two-band multiplex antenna, empty when two frequency range switch operatings
Between it is upper multiplexing can be realized without switching feed, save switching time, and two frequency ranges of Ku/Ka while work may be implemented
Make.
Realize that the technical solution of the utility model aim is as follows:
A kind of feed network of two-band multiplex antenna, comprising: Feed Horn, channel-splitting filter, line polarization wave guiding systems, entelechy
Change Wave guide system, the channel-splitting filter be equipped with network common port, the first frequency range mouth and the second frequency range mouth, the network common port with
Feed Horn connection, the first frequency range mouth are connect with line polarization wave guiding systems, the second frequency range mouth and circular polarisation waveguide system
System connection.In the present invention, the first frequency band signals are linear polarization signal, and the second frequency band signals are circularly polarized signal；Network
Common port is connected with Feed Horn, and Feed Horn is double frequency shared loudspeaker, and the first frequency range mouth is used for transmission the first frequency band signals (line
Polarized signal) while inhibiting the second frequency band signals (circularly polarized signal), the second frequency range mouth is used for transmission the second frequency band signals (circle
Polarized signal), while ending the first frequency band signals (linear polarization signal).The utility model may be implemented by setting channel-splitting filter
Two frequency ranges work at the same time；Also, when two frequency range switch operatings, multiplexing spatially can be realized without switching feed,
Save switching time.
The first frequency range mouth is four ports as a further improvement of the utility model, and four port phases are equal
And it is mutually orthogonal on direction.In the present invention, mutually orthogonal on direction, refer to that two adjacent ports are mutually hung down
Directly.First frequency range mouth is arranged to four ports that phase is equal and direction is mutually orthogonal by the utility model, is on the one hand used for
Coupling line polarized signal inhibits circularly polarized signal, is facilitated using two opposite ports as the first UHF band reception
Other two opposite port is emitted signal by signal.
Four ports are respectively positioned on the peripheral wall of channel-splitting filter as a further improvement of the utility model, and four ports are mutual
It is orthogonal.Two ports in same direction are used to receive signal by the utility model, in the other direction other two
Port is used to emit signal, and receiving and transmitting signal is mutually orthogonal, realizes the orthogonal isolation of the first frequency range receiving and transmitting signal.
The line polarization wave guiding systems include that linear polarization receives network and line pole as a further improvement of the utility model,
Change transmitting network, the linear polarization receives network and connect with two ports, the linear polarization transmitting network and other two port
Connection.The linear polarization of the utility model receives network and linear polarization transmitting network occupies two ports respectively, passes through two respectively
Road port is connected with channel-splitting filter.
It includes that a linear polarization receives power splitter that the linear polarization, which receives network, as a further improvement of the utility model,
With two receiving low pass filters, one end of two receiving low pass filters and two ports of channel-splitting filter are connected, and two
The other end of receiving low pass filter receives power splitter with linear polarization and connect.It is three that the linear polarization of the utility model, which receives network,
Port devices, when the first frequency band signals are Ku signal, and the second frequency band signals are Ka signal, receiving low pass filter meets Ku
Characteristic is led directly in a number presentation of collecting mail, and emits signal to Ku and stopband rejection characteristic is presented in Ka receiving and transmitting signal, to Ku transmitting signal
Inhibit to improve the isolation between Ku transmitting-receiving, while being not necessarily to individually add filter again, it is simpler compact in structure.
The linear polarization transmitting network includes that a linear polarization emits power splitter as a further improvement of the utility model,
With two transmitting terminal low-pass filters, one end of two transmitting terminal low-pass filters and other two port of channel-splitting filter are connected,
The other end of two transmitting terminal low-pass filters is connect with linear polarization transmitting power splitter.The linear polarization of the utility model emits network
For three port devices, when the first frequency band signals are Ku signal, and the second frequency band signals are Ka signal, transmitting terminal low-pass filter is
Reflecting filter, straight-through characteristic is presented to Ku transmitting signal in it, and stopband rejection characteristic is presented to Ka receiving and transmitting signal.
The second frequency range mouth is a port, the second frequency range mouth position as a further improvement of the utility model,
At the center on channel-splitting filter end face, the second frequency range mouth is used for transmission the second frequency band signals, while ending the first frequency range letter
Number.First frequency band signals of the utility model are Ku signal, the second frequency band signals are Ka signal, and the second frequency range mouth is Ka mouthfuls, Ka
Mouth is used for transmission Ka signal, while ending Ku signal.
The circularly polarised wave guiding systems include single channel rotary joint and circle wave as a further improvement of the utility model,
It leads, one end of single channel rotary joint is connect with the second frequency range mouth, and the other end of single channel rotary joint and one end of circular waveguide connect.
The circularly polarised wave guiding systems further include circular polarizer as a further improvement of the utility model, the entelechy
Change device and is used to complete the conversion between line polarization wave and circularly polarised wave, the other end connection of the circular polarizer and circular waveguide.
The circularly polarised wave guiding systems further include duplexer as a further improvement of the utility model, the duplexer
Common port connect with circular polarizer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the feed network of two-band multiplex antenna；
Fig. 2 is the structural schematic diagram of channel-splitting filter；
Fig. 3 is the structural schematic diagram that linear polarization receives network；
Fig. 4 is the structural schematic diagram that linear polarization emits network；
Fig. 5 is the structural schematic diagram of the feed network different directions of the two-band multiplex antenna of Fig. 1.
In figure, 1, Feed Horn；2, channel-splitting filter；3, linear polarization emits network；4, linear polarization receives network；5, single channel rotates
Joint；6, circular waveguide；7, circular polarizer；8, duplexer；9, network common port；10, the second frequency range mouth；11, the first frequency range mouth；
11-1, receiving port I；11-2, emission port I；11-3, receiving port II；11-4, emission port II；12, power splitter is received；
13, receiving low pass filter；14, common port is received；15, emit power splitter；16, transmitting terminal low-pass filter；17, transmitting is public
Mouth altogether；18, tributary port.
Specific embodiment
The utility model is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that,
These embodiments are not limitation of the utility model, those of ordinary skill in the art according to these embodiments made by function
Energy, method or equivalent transformation or substitution in structure, belong within the protection scope of the utility model.
Embodiment 1:
In order to realize that feed network (transmitting surface antenna) channeling does not need spatially to switch feed, the present embodiment is mentioned
The feed network for having supplied a kind of two-band multiplex antenna, when two frequency range switch operatings, spatially without switching feed
It realizes multiplexing, saves switching time, and two frequency ranges of Ku/Ka may be implemented and work at the same time.
It please join shown in Fig. 1, Fig. 1 is the structural schematic diagram of the feed network of two-band multiplex antenna.One kind of the present embodiment
The feed network of two-band multiplex antenna, comprising: Feed Horn 1, channel-splitting filter 2, line polarization wave guiding systems, circular polarisation waveguide system
System, channel-splitting filter 2 are equipped with network common port 9, the first frequency range mouth 11 and the second frequency range mouth 10, network common port 9 and Feed Horn 1
Connection, the first frequency range mouth 11 are connect with line polarization wave guiding systems, and the second frequency range mouth 10 is connect with circularly polarised wave guiding systems.
In the present embodiment, the first frequency band signals are linear polarization signal, and the second frequency band signals are circularly polarized signal.At me
State, Ku band satellite communication is using orthogonal linear polarization mode is received and dispatched, and Ka band satellite communication is using the circle for receiving and dispatching different rotation directions
Polarization mode.
The channel-splitting filter 2 of the present embodiment, network common port 9 are connected with Feed Horn 1, and Feed Horn 1 is double frequency shared loudspeaker,
First frequency range mouth 11 is used for transmission the first frequency band signals (linear polarization signal, Ku frequency band signals) while inhibiting the second frequency band signals
(circularly polarized signal, Ka frequency band signals), the second frequency range mouth 10 are used for transmission the second frequency band signals (circularly polarized signal, Ka frequency range letter
Number), while ending the first frequency band signals (linear polarization signal, Ku frequency band signals).
The present embodiment may be implemented two frequency ranges and worked at the same time by setting channel-splitting filter 2；Also, when two frequency range switchings
When work, multiplexing spatially can be realized without switching feed, save switching time.
In the present embodiment, the first frequency range mouth 11, the second frequency range mouth 10 structure type with no restrictions, in principle come
It says, as long as signal needed for line polarization wave guiding systems can be transmitted to line polarization wave guiding systems, the first frequency range by the first frequency range mouth 11
The signal that line polarization wave guiding systems transmit can be transmitted to satellite by mouth 11.
In the present embodiment, preferably the first frequency range mouth 11 is four ports, and four ports are located on the side wall of channel-splitting filter,
Four port phase is equal and direction is mutually orthogonal；Second frequency range mouth 10 is center axis channel.
Referring to Fig. 2, Fig. 2 is the structural schematic diagram of channel-splitting filter 2.2 structure of channel-splitting filter of the present embodiment is preferably the knot of Fig. 2
Structure.Channel-splitting filter 2 in Fig. 2, the first frequency range mouth 11 are made of four ports, four port phases it is equal and on direction mutually just
It hands over.In the present embodiment, mutually orthogonal on direction, refer to that two adjacent ports are mutually perpendicular to.The present embodiment by first frequency
Section mouth 11 is arranged to four ports that phase is equal and direction is mutually orthogonal, is on the one hand for coupling line polarized signal, inhibits
On the other hand circularly polarized signal is to facilitate using two opposite ports as the first UHF band reception signal, other two is opposite
Port as the first frequency range emit signal.Four ports are respectively positioned on the peripheral wall of channel-splitting filter 2, and four ports are mutually orthogonal.This
Four ports are arranged on the peripheral wall of channel-splitting filter 2 embodiment, and the purpose is to facilitate the installation of line polarization wave guiding systems.In addition,
Two ports in same direction are used to receive signal by the present embodiment, other two port in the other direction is used to
Emit signal, receiving and transmitting signal is mutually orthogonal, realize the orthogonal isolation of the first frequency range receiving and transmitting signal.Channel-splitting filter 2 in Fig. 2, the
Two frequency range mouths 10 are a port, and the second frequency range mouth 10 is located at the center on 2 end face of channel-splitting filter, and the second frequency range mouth 10 is for passing
Defeated second frequency band signals, while ending the first frequency band signals.
Embodiment 2:
In order to realize that feed network (transmitting surface antenna) channeling does not need spatially to switch feed, the present embodiment is mentioned
The feed network for having supplied a kind of two-band multiplex antenna, when two frequency range switch operatings, spatially without switching feed
It realizes multiplexing, saves switching time, and two frequency ranges of Ku/Ka may be implemented and work at the same time.Embodiment 2 is embodiment 1
Further expand, technical solution disclosed in embodiment 1 is equally applicable in example 2.
It please join shown in Fig. 1, Fig. 1 is the structural schematic diagram of the feed network of two-band multiplex antenna.One kind of the present embodiment
The feed network of two-band multiplex antenna, comprising: Feed Horn 1, channel-splitting filter 2, line polarization wave guiding systems, circular polarisation waveguide system
System, line polarization wave guiding systems include that linear polarization receives network 4 and linear polarization transmitting network 3, and linear polarization receives network 4 and two ends
Mouth connection, linear polarization transmitting network 3 are connect with other two port.The linear polarization of the present embodiment receives network 4 and linear polarization hair
It penetrates network 3 and occupies two ports respectively, be connected respectively by two tributary ports with channel-splitting filter 2.Circularly polarised wave guiding systems include single
Road rotary joint 5, circular waveguide 6, circular polarizer 7, duplexer 8, one end of single channel rotary joint 5 are connect with the second frequency range mouth 10,
The other end of single channel rotary joint 5 is connect with one end of circular waveguide 6, and circular polarizer 7 is for completing line polarization wave and circularly polarised wave
Between conversion, circular polarizer 7 connect with the other end of circular waveguide 6, and circularly polarised wave guiding systems further include duplexer 8, duplexer 8
Common port connect with circular polarizer 7.
It please join shown in Fig. 3, Fig. 3 is the structural schematic diagram that linear polarization receives network.The linear polarization of the present embodiment receives network 4
Power splitter 12 and two receiving low pass filters 13 are received including linear polarization, the one of two receiving low pass filters 13
End is connect with two ports of channel-splitting filter 2, and the other end and linear polarization of two receiving low pass filters 13 receive power splitter 12
Connection.
It please join shown in Fig. 4, Fig. 4 is the structural schematic diagram that linear polarization emits network.The linear polarization of the present embodiment emits network 3
Including linear polarization transmitting power splitter 15 and two transmitting terminal low-pass filters 16, the one of two transmitting terminal low-pass filters 16
End is connect with other two port of channel-splitting filter 2, the other end and linear polarization the transmitting function point of two transmitting terminal low-pass filters 16
Device 15 connects.
Referring to Fig. 2, Fig. 2 is the structural schematic diagram of channel-splitting filter 2.Channel-splitting filter 2 in Fig. 2 is Six-port waveguide parts, wherein net
Network common port 9 is connected with Feed Horn 1, and the second frequency range mouth 10 is used for transmission the signal of the second frequency range, while ending the first frequency range
Signal；Receiving port I, emission port I, receiving port II, emission port II are four, and phase is equal and direction is mutually orthogonal
Port, be used for the first frequency band signals of coupled transfer, while inhibiting the second frequency band signals, receiving port I, receiving port II are the
One UHF band reception signal, emission port I, emission port II are that the first frequency range emits signal, and the first frequency range receiving and transmitting signal is mutually just
It hands over, realizes the orthogonal isolation of the first frequency range receiving and transmitting signal.
Embodiment 3:
On the basis of embodiment 1 and embodiment 2, first frequency band signals of the present embodiment are Ku signal, the second frequency range letter
Number be Ka signal.
As Figure 1-Figure 5, the feed network of two-band multiplex antenna, feed network include Feed Horn 1, channel-splitting filter 2,
Ku emits the groups such as subsystem, Ku receiving subsystem, Ka single channel rotary joint, Ka connection waveguide, Ka circular polarizer and Ka duplexer
At.Present embodiment discloses the feed network of two-band multiplex antenna, feed network includes double frequency shared loudspeaker, channel-splitting filter, Ku
Transmitting network, Ku receive network, Ka single channel rotary joint, Ka circular polarizer and Ka duplexer and are composed.Channel-splitting filter is used for will
Ka signal path and Ku signal path separate, and wherein Ka signal is by center shaft channel, Ku signal by four side walls into
Row integrated separation synthesizes again.Two are used for the receiving channel of Ku in four side walls, other two is used for Ku transmission channel.This implementation
Example is simple and compact for structure, switches feed without space, high reliablity, performance is stablized, and can realize that two kinds of frequency ranges work at the same time
State.
Channel-splitting filter 2 is Six-port waveguide parts, and wherein network common port is connected with Feed Horn 1, and Ka mouth 10 is used for transmission Ka letter
Number, end Ku signal simultaneously；Receiving port I, emission port I, receiving port II, emission port II are that four phases are equal and square
To mutually orthogonal port, it is used for coupled transfer Ku signal, while inhibiting Ka signal.Receiving port I, receiving port II connect for Ku
The collection of letters number, emission port I, emission port II are that Ku emits signal, and Ku receiving and transmitting signal is mutually orthogonal, is realizing Ku receiving and transmitting signal just
Hand over isolation (four ports are equivalent, on same straight line can be two-by-two as receiving and transmitting uses, orthogonal in structure ensure that Ku
Receiving and transmitting signal is mutually orthogonal, realizes the orthogonal isolation of Ku receiving and transmitting signal).Channel-splitting filter is used for Ka signal path and Ku signal path
It separates, wherein by center shaft channel, Ku signal carries out integrated separation by four side walls and synthesizes again Ka signal.Channel-splitting filter
For Six-port waveguide parts, wherein network common port is connected with Feed Horn, and Ka mouthfuls are used for transmission Ka signal, while ending Ku signal；
Four ports of side wall are four ports that phase is equal and direction is mutually orthogonal, are used for coupled transfer Ku signal, while inhibiting Ka
Signal.
It is three port devices that Ku, which emits subsystem, including a Ku emits power splitter and two transmitting terminal low-pass filters,
Transmitting terminal low-pass filter is reflecting filter, and straight-through characteristic is presented to Ku transmitting signal in it, presents and hinders to Ka receiving and transmitting signal
Band rejection characteristic, Ku emit common port by transmitting power splitter and two filter channel realize branch, by two tributary ports with
Channel-splitting filter is connected.It includes that two Ku transmitting terminal low-pass filters and Ku emit power splitter that Ku, which emits subsystem,；Ku transmitting terminal low pass
Straight-through characteristic is presented to Ku transmitting signal in filter, and stopband rejection characteristic is presented to Ka receiving and transmitting signal.
Ku receiving subsystem is three port devices, including a Ku receives power splitter and two receiving low pass filters,
Receiving low pass filter receives signal to Ku and straight-through characteristic is presented, and emits signal to Ku and stopband suppression is presented in Ka receiving and transmitting signal
Characteristic processed improves the isolation between Ku transmitting-receiving to the inhibition of Ku transmitting signal, while without individually adding filter, structure again
It is upper simpler compact, since stopband reaches 2.5 octaves, high-order harmonic filtering device need to be selected；Two filter channel is by connecing
Power splitter synthesis is received, and transition is the output of BJ120 standard mouth, i.e. Ku receives common port, passes through two tributary ports and channel-splitting filter phase
Even.Ku receiving subsystem includes that a Ku receives power splitter and two receiving low pass filters, receiving low pass filter pair
Ku receives signal and straight-through characteristic is presented, and emits signal to Ku and stopband rejection characteristic is presented in Ka receiving and transmitting signal.
Ku emits subsystem and Ku receiving subsystem, and receiving and transmitting signal is connected by channel-splitting filter, spatially mutually orthogonal.Due to
Ka frequency range distance farther out, reaches 2.5 octaves, and level-one or more may be selected in transmitting terminal low-pass filter and receiving low pass filter
Grade filter is realized.
Ka single channel rotary joint is dual-port device, and rotor portion is connected with channel-splitting filter, fixed part and Ka circular waveguide
It is connected, Ka receiving port is BJ220 standard waveguide mouth, and Ka emission port is BJ320 standard waveguide mouth, and transmitting-receiving port is orthogonal, and
The high-isolation between transmitting-receiving is realized by orthogonal isolation and Ka resistance hair filter between transmitting-receiving.The guarantee of Ka single channel rotary joint is worked as
It is partially remained stationary below rotary joint when rotary joint above section rotates.
Ka circular waveguide is common circular waveguide, connects Ka single channel rotary joint and Ka circular polarizer, length are tied according to space
Structure is adjusted.
Ka circular polarizer is dual-port device, the conversion between line polarization wave and circularly polarised wave is completed, according to structure space
The circular polarizer of the forms such as dieelctric sheet circular polarizer, corrugated waveguide circular polarizer may be selected.
Ka duplexer is three port devices, and common port connects with Ka circular polarizer, and Ka receiving port is BJ220 standard wave
Mouth is led, Ka emission port is BJ320 standard waveguide mouth, and transmitting-receiving port is orthogonal, and sends out filter by orthogonal isolation and Ka resistance between transmitting-receiving
Wave device realizes the high-isolation between transmitting-receiving；
The Ku channel part that Ku/Ka two-band is multiplexed feed network includes presenting loudspeaker, channel-splitting filter, Ku transmitting network and Ku altogether
Network is received, it is BJ120 standard waveguide mouth that Ku, which receives and dispatches port,；Ka channel part includes presenting loudspeaker, channel-splitting filter, Ka rotation altogether
Joint, circular waveguide, Ka circular polarizer and Ka duplexer, emission port are BJ320 standard waveguide mouth, receiving port BJ220
Standard waveguide mouth.
Feed network drives Ku channel part and by the Ku LNB connecting with receiving port around central axis by stepper motor
Polarization is rotated jointly, realizes the polarization tracking of Ku receiving and transmitting signal, and Ka channel part below rotary joint is fixed.
When the present embodiment Ku/Ka two-band multiplexing feed network accesses in communication in moving system in use, entire feed network
It is placed in front of reflector antenna, Ka emission port is connect with Ka transmitting power amplifier, and Ka receiving port is connect with Ka LNB, Ku transmitting
Port is connect by emitting power amplifier with Ku after one single channel Ku rotary joint of concatenation, and Ku receiving port is directly connect with Ku LNB, Ku
LNB is same preposition before reflector antenna.It drives Ku channel part and Ku LNB to rotate jointly by stepper motor, and rotates and close
It is fixed to save following Ka channel part.
When communication system works in Ka frequency range, when transmitting, after the Ka line polarization wave issued from Ka power amplifier is by circular polarizer
Become circularly polarised wave, is radiated by the channel Ka eventually by total feedback loudspeaker；When reception, enters from space and present loudspeaker entelechy altogether
Change electromagnetic wave and pass through the channel Ka, becomes line polarization wave after circular polarizer, then export through Ka duplexer receiving port and give Ka LNB.
Isolation between Ka transmitting-receiving is guaranteed by Ka duplexer, can be usually reached 90dB or more.
When communication system works in Ku frequency range, driving motor drives Ku channel part and Ku LNB rotation, makes it around center
Axis makees dead axle circular motion, and Ka channel part below rotary joint is fixed, matches when reaching the polarization with beacon signal
When, realize the polarization tracking of Ku receiving and transmitting signal.When transmitting, the Ku line polarization wave issued from Ku power amplifier passes through Ku transmission channel, coupling
It closes after entering channel-splitting filter, is radiated by total feedback loudspeaker；When reception, another orthogonal line pole for presenting loudspeaker altogether is entered from space
Change electromagnetic wave after channel-splitting filter is coupled into Ku receiving channel, inputs to Ku LNB through Ku receiving port.Between Ku transmitting-receiving
Isolation is guaranteed by the orthogonal isolation and Ku receiving channel filter of channel-splitting filter, can be usually reached 90dB or more.When having more
When high-isolation requires, it can also be realized by concatenating resistance hair filter in Ku receiving channel.
The high-frequency suppressing characteristic that the channel Ku passes through the low-pass filter between channel-splitting filter and the channel Ku to the isolation of Ka signal
Guaranteed, the channel Ka guarantees the cut-off characteristics of low-frequency electromagnetic wave the isolation of Ku signal by waveguide.Have between access
The isolation of 80dB or more is independent of each other between two signal paths.It can be used for realizing that double frequency works at the same time.
The feed network of the two-band multiplex antenna of the present embodiment has the advantage that
1, feed network is small in size, be placed in reflector antenna it is used above when, caused feed blocks small, does not influence anti-
Penetrate the utilization efficiency of surface antenna.
2, when two band operation switch operatings, multiplexing spatially can be realized without switching feed, save switching
Time, and two frequency ranges of Ku/Ka may be implemented and work at the same time.
3, the spatial orthogonality of channel-splitting filter Ku coupling port ensure that the cross polarization of Ku frequency range transmitting-receiving linear polarization signal
Good, cross polarization is better than 50dB.
4, feed network is compact-sized, neat appearance, and insertion loss is low.
5, switch without space, saved cost, while improving the reliability of system.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of feed network of two-band multiplex antenna characterized by comprising Feed Horn, channel-splitting filter, linear polarization waveguide
System, circularly polarised wave guiding systems, the channel-splitting filter are equipped with network common port, the first frequency range mouth and the second frequency range mouth, the net
Network common port is connect with Feed Horn, and the first frequency range mouth is connect with line polarization wave guiding systems, the second frequency range mouth and circle
The connection of poled waveguide system.
2. feed network according to claim 1, which is characterized in that the first frequency range mouth is four ports, four ends
Mouth phase is equal and mutually orthogonal on direction.
3. feed network according to claim 2, which is characterized in that four ports are respectively positioned on the peripheral wall of channel-splitting filter.
4. feed network according to claim 2 or 3, which is characterized in that the line polarization wave guiding systems include linear polarization
It receives network and linear polarization emits network, the linear polarization receives network and connect with two ports, and the linear polarization emits network
It is connect with other two port.
5. feed network according to claim 4, which is characterized in that it includes a linear polarization that the linear polarization, which receives network,
Receive power splitter and two receiving low pass filters, one end of two receiving low pass filters and two ports of channel-splitting filter
Connection, the other end of two receiving low pass filters receive power splitter with linear polarization and connect.
6. feed network according to claim 4, which is characterized in that the linear polarization transmitting network includes a linear polarization
Emit power splitter and two transmitting terminal low-pass filters, one end of two transmitting terminal low-pass filters and channel-splitting filter other two
The other end of port connection, two transmitting terminal low-pass filters is connect with linear polarization transmitting power splitter.
7. feed network according to claim 1, which is characterized in that the second frequency range mouth is a port, described the
Two frequency range mouths are located at the center on channel-splitting filter end face, and the second frequency range mouth is used for transmission the second frequency band signals, end simultaneously
First frequency band signals.
8. feed network according to claim 1 or claim 7, which is characterized in that the circularly polarised wave guiding systems include single channel rotation
Turn joint and circular waveguide, one end of single channel rotary joint is connect with the second frequency range mouth, the other end and circle wave of single channel rotary joint
One end connection led.
9. feed network according to claim 8, which is characterized in that the circularly polarised wave guiding systems further include circular polarisation
Device, the circular polarizer are used to complete conversion between line polarization wave and circularly polarised wave, the circular polarizer and circular waveguide it is another
One end connection.
10. feed network according to claim 9, which is characterized in that the circularly polarised wave guiding systems further include duplexer,
The common port of the duplexer is connect with circular polarizer.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600119A (en) * | 2020-05-28 | 2020-08-28 | 无锡华信雷达工程有限责任公司 | Ku/Ka ultra-wide double-frequency composite feed network system |
| CN113097740A (en) * | 2021-04-08 | 2021-07-09 | 上海航天测控通信研究所 | Double-frequency transmitting-receiving shared double-circular polarization feed source |
| CN113839155A (en) * | 2021-06-30 | 2021-12-24 | 西安空间无线电技术研究所 | Asymmetric minimized Ka dual-circular polarization frequency duplexer |
| 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 |
-
2018
- 2018-12-19 CN CN201822136876.5U patent/CN209641840U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600119A (en) * | 2020-05-28 | 2020-08-28 | 无锡华信雷达工程有限责任公司 | Ku/Ka ultra-wide double-frequency composite feed network system |
| CN113097740A (en) * | 2021-04-08 | 2021-07-09 | 上海航天测控通信研究所 | Double-frequency transmitting-receiving shared double-circular polarization feed source |
| CN113839155A (en) * | 2021-06-30 | 2021-12-24 | 西安空间无线电技术研究所 | Asymmetric minimized Ka dual-circular polarization frequency duplexer |
| 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 |
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