CN103094718A - Ka frequency range miniaturization broadband multimode auto-tracking feed source network - Google Patents
Ka frequency range miniaturization broadband multimode auto-tracking feed source network Download PDFInfo
- Publication number
- CN103094718A CN103094718A CN2012105320327A CN201210532032A CN103094718A CN 103094718 A CN103094718 A CN 103094718A CN 2012105320327 A CN2012105320327 A CN 2012105320327A CN 201210532032 A CN201210532032 A CN 201210532032A CN 103094718 A CN103094718 A CN 103094718A
- Authority
- CN
- China
- Prior art keywords
- arm
- magic
- polarization
- waveguide
- frequency range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The invention relates to a Ka frequency range miniaturization broadband multimode auto-tracking feed source network. Two polarization degenerate modes of TE21 mode transmitted by center circular waveguide are coupled to four rectangular waveguide by adopting a four-arm circular polarization TE21 coupler. Two four-way polarization degenerate modes of the TE21 mode is combined into two two-way polarization degenerate modes of the TE21 mode by two broadband magic Ts. A left-handed or right-handed circular polarization difference mode is output by a broadband 90-degree electrical bridge. The TE21 coupler center circular waveguide is capable of simultaneously transmitting a TE11 mode. Due to the fact that the TE21 coupler is connected with a broadband circular polarization machine, and two polarization modes of a signal are respectively output from two ports of the broadband circular polarization machine, the Ka frequency range miniaturization broadband multimode auto-tracking feed source network is capable of simultaneously receiving a signal of double-circular polarization and a difference signal, and thereby the auto-tracking function is realized. The Ka frequency range miniaturization broadband multimode auto-tracking feed source network has the advantages of not only simplifying composition of the feed source network, reducing the volume and the weight of the whole device, but also reducing network construction, saving feed source cost and broadening working band of the feed source network.
Description
Technical field
The present invention relates to the wide band autotracking antenna feed of a kind of Ka frequency range miniaturization network, belong to antenna technical field.
Background technology
The autotracking feed is the core component that feedback system is watched in observing and controlling, communication, radar sky.Autotracking feed network implementation has multichannel and two kinds of approach of differential mode; Much channel communication adopts a plurality of feeds unit, forms the differential mode directional diagram by poor network, and multichannel differential mode feed major defect is numerous and diverse for forming, volume large (radiation is blocked greatly); The differential mode mode is to utilize the specific higher mode of waveguide, by coupler, higher mode is coupled out, then by the synthetic differential mode directional diagram of poor network, the advantage of differential mode mode maximum is to have reduced the feed element number, and feed forms succinct.
It is mainly TM01 mould and TE21 mould that the multimode of at present using is often abroad followed the tracks of.TE21 mode coupling device is that the TE10 mode coupling in rectangular waveguide is become TE21 higher mode in circular waveguide, then produces the device of the poor directional diagram of following the tracks of use.TE21 mould tracking accuracy is high, and coupler structure is compact, thereby is more and more used in satellite communication and spaceborne radar.
From the TE11 signal of communication of reflector antenna incident, by the main channel of TE21 coupler, little loss ground is to export with signal form.When the antenna electric axis overlaps with arrival bearing, there is no error signal output; And when the antenna electric axis departs from arrival bearing, difference beam will receive signal, will encourage the TE21 higher mode in loudspeaker.TE21 higher mode through the main channel is coupled to poor passage through coupling aperture, and mode-conversion is the TE10 mould in rectangular waveguide.The TE10 mould is by synthetic one road signal of the comprise network of back.Comprise network can be divided into linear polarization network and circular polarization network.The linear polarization network is corresponding to the coupler of 4 coupling arms, and only be coupled in two patterns of TE21 one of this coupler is not coupled out degenerate mode.The circular polarization network is corresponding to the coupler of 8 coupling arms, and this type of coupler all is coupled out TE21 and its degenerate mode, forms circular polarization by magic T and 90 ° of electric bridges.This network can tracker wire the polarization incoming wave, can follow the tracks of the circular polarization incoming wave again, and for the circular polarization incoming wave, not have polarization loss, be reasonable scheme, but the comprise network very complex, particularly in the higher situation of frequency.In order to reduce loss, generally make comprise network with waveguide, its size is larger, and structure also is difficult to layout.
The TE21 coupler is the core component of autotracking feed network, and it is in fact a Mode selective directional coupler.By a large amount of research of Chinese scholars, the design theory of Ku and following frequency range TE21 coupler is comparatively ripe, but still prematurity of the design of millimere-wave band coupler, not having ready-made method can use for reference.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art, a kind of Ka frequency range miniaturization broadband multimode autotracking feed network is provided, realized the Miniaturization Design of feed network, not only simplified the composition of feed network, reduced the volume and weight of whole equipment, also reduced the cost of network and saved the feed cost, having widened the working band of feed network.
Above-mentioned purpose of the present invention mainly is achieved by following technical solution:
Ka frequency range miniaturization broadband multimode autotracking feed network, comprise four arm circular polarization TE21 couplers, circular polarizer, the first magic T, the second magic T and 90 ° of electric bridges, wherein four arm circular polarization TE21 couplers are comprised of four rectangular waveguides and center circle waveguide, the center circle waveguide is connected with circular polarizer and produces TE11 dual polarization and signal, four rectangular waveguide arms by waveguide and the first magic T be connected magic T and be connected, the first magic T be connected magic T and be connected with 90 ° of electric bridges by waveguide, four rectangular waveguide arms are coupled out two polarization degenerate modes of TE21 respectively, through the first magic T, form TE21 dual polarization difference signal after the second magic T and 90 ° of electric bridges, described TE11 dual polarization and signal and described TE21 dual polarization difference signal produce simultaneously, thereby realize the autotracking characteristic.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, rectangular waveguide arm in four arm circular polarization TE21 couplers is connected by waveguide with two arms of the first magic T respectively, the polarization of rectangular waveguide arm lower port output is identical, the two-way difference signal of single spin-echo is inputted respectively from two arms of the first magic T, merge into one road difference signal, by the E arm output of the first magic T; Rectangular waveguide arm in four arm circular polarization TE21 couplers is connected by waveguide with two arms of the second magic T respectively, the polarization of rectangular waveguide arm lower port output is identical, the two-way difference signal of single spin-echo is inputted respectively from two arms of the second magic T, merge into one road difference signal, by the E arm output of the second magic T; Described two-way difference signal is input to 90 ° of electric bridges from the bridge arm upper port of 90 ° of electric bridges, the upper port of 90 ° of electric bridges receives the two-way difference signal, make 90 ° of the leading or lagging phases of two-way difference signal, thereby form the TE21 dual polarization difference signal of left-handed or dextrorotation, export from two lower port of 90 ° of electric bridges respectively.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, the waveguide length that the first magic T is connected with 90 ° of electric bridges equates with the waveguide length that the second magic T is connected with 90 ° of electric bridges.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, four waveguide lengths that the rectangular waveguide arm in four arm circular polarization TE21 couplers is connected with the first magic T, the second magic T respectively equate.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, rectangular waveguide in four arm circular polarization TE21 couplers is one group, rectangular waveguide is one group, angle between rectangular waveguide and rectangular waveguide is 180 °, angle between rectangular waveguide and rectangular waveguide is 180 °, and the angle between two groups of rectangular waveguides is 45 °.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, the first magic T comprises input, H arm and the E arm of two symmetries, adopt 6 stage rank conical structures as the allotment element in the junction of input, H arm and E arm, make four port match of the first magic T, to eliminate reflection; The second magic T comprises input, H arm and the E arm of two symmetries, adopts 6 stage rank conical structures as the allotment element in the junction of input, H arm and E arm, makes four port match of the second magic T, to eliminate reflection.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, by regulating each shoulder height and radius in 6 stage rank conical structures, realize VSWR＜1.2 in 18% frequency band, amplitude imbalance degree＜0.3dB, phase unbalance degree＜0.1 °.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, four arm circular polarization TE21 couplers are according to Bessel distribution design 32 hole four arm couplers out, each TE21 polarization degenerate mode is coupled out by two coupling arms, realize 11% the interior coupling loss＜0.6dB of frequency band, VSWR＜1.5, directivity＜-40dB, to the inhibition degree＞30dB of TE11 pattern.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, circular polarizer has 5 grades of step metal thin-wall structures, realizes VSWR in 12% frequency band＜1.2, isolation＜-20dB, axial ratio＜1dB.
In above-mentioned Ka frequency range miniaturization broadband multimode autotracking feed network, 90 ° of electric bridges are realized VSWR＜1.2 in 15% frequency band, amplitude imbalance degree＜0.2dB, phase unbalance degree＜0.3 °.
The present invention's advantage compared with prior art is:
(1) the present invention is owing to adopting four arm circular polarization TE21 couplers, and traditional 8 arms or 16 arms of generally all adopting, so just need to adopt 7 to 12 magic T, certainly will cause horizontal and vertical size huge, the complex structure of feed network, all be difficult under existing condition realizing thereby make processing and be arranged on, and the present invention adopts 4 arm TE21 couplers of innovative design, only need to adopt two magic T and 90 ° of electric bridges, thereby realize the miniaturization of feed network, not only simplified the composition of feed network, reduced the volume and weight of whole equipment, also reduce the cost of network and saved the feed cost,
(2) the present invention is owing to utilizing multistage frustum to come the bandwidth of broadening evil spirit T; Increase the coupling aperture of waveguide bridge, come the bandwidth of broadening waveguide bridge by changing coupling aperture shape and coupling aperture Energy distribution; Adopt multi-stage stairs metallic membrane structure to make the broadband polarizer realize all having good circular polarization performance in broad frequency range; Number, spacing and shape broadening by the optimal design coupling aperture bandwidth of four arm circular polarization TE21 couplers; By above design, greatly widened the bandwidth of whole feed network, can satisfy the demand of ground station's antenna-feedback system broadband autotracking;
(3) design of the wide band autotracking antenna feed of Ka frequency range of the present invention miniaturization network has solved the difficult problem of ka frequency range antenna-feedback system broadband autotracking, realize the expansion of autotracking network bandwidth, guarantee that in broad frequency range the differential mode degree of coupling reaches and mould inhibition degree; Guarantee that magic T and waveguide bridge and circular polarizer have good amplitude and phase characteristic in broad frequency range.
Description of drawings
Fig. 1 a is the structural representation of feed network of the present invention;
Fig. 1 b is the poor network diagram of feed of the present invention;
Fig. 2 a is the present invention's four arm circular polarization TE21 coupler structure schematic diagrames;
Fig. 2 b is the present invention's four arm circular polarization TE21 coupling principle schematic diagrames;
Fig. 3 a is the present invention's evil spirit T profile schematic diagram;
Fig. 3 b is the present invention's evil spirit T generalized section;
Fig. 4 is 90 ° of bridge structure schematic diagrames of the present invention;
Fig. 5 a is circular polarizer profile schematic diagram of the present invention;
Fig. 5 b is circular polarizer generalized section of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is done further detailed description:
Be as shown in Figure 1a the structural representation of feed network of the present invention, Ka frequency range miniaturization broadband multimode autotracking feed network of the present invention comprises four arm circular polarization TE21 couplers 1, circular polarizer 2, the first magic T3, the second magic T4 and 90 ° of electric bridges 5.Four arm circular polarization TE21 couplers 1, circular polarizer 2 form feed and networks, and four arm circular polarization TE21 coupler the 1, first magic T3, the second magic T4,90 ° of electric bridges 5 form feed poor networking.
Four arm circular polarization TE21 couplers 1 by four rectangular waveguides 6,7,8,9 and center circle waveguide 10 form, center circle waveguide 10 is connected with circular polarizer 2 and produces TE11 dual polarization and signal.Four rectangular waveguide arms 6 in four arm circular polarization TE21 couplers 1,7,8,9 by waveguide and the first magic T3 be connected magic T4 and be connected, the first magic T3 be connected magic T4 and be connected with 90 ° of electric bridges 5 by waveguide, four rectangular waveguide arms 6 in four arm circular polarization TE21 couplers 1,7,8,9 two polarization degenerate modes with TE21 are coupled out respectively, through forming TE21 dual polarization difference signal after the first magic T3, the second magic T4 and 90 ° of electric bridges 5, TE11 dual polarization and signal and described TE21 dual polarization difference signal produce simultaneously, thereby realize the autotracking characteristic.
Wherein the waveguide length that is connected with 90 ° of electric bridges 5 of the first magic T3, equate with the waveguide length that the second magic T4 is connected with 90 ° of electric bridges 5.Rectangular waveguide arm 6,7,8 in four arm circular polarization TE21 couplers 1,9 four waveguide lengths that are connected with the first magic T3, the second magic T4 equate.
Be depicted as the poor network diagram of feed of the present invention as Fig. 1 b, Fig. 1 b has provided each assembly annexation of feed network, if the loudspeaker that center circle waveguide 10 upper ends connect receive the incoming wave signal, signal reaches in central waveguide 10 and can encourage the TE21 mould, through four rectangular waveguides 6,7,8,9 lower port output, few portion of energy is transferred to rectangular waveguide 6,7,8,9 upper port to most of TE21 mould by coupling aperture.This part little energy is absorbed by the absorbing load that upper port connects, and prevents from reflecting the impact that causes the center main waveguide.Rectangular waveguide arm 6,8 in four arm circular polarization TE21 couplers 1 is connected (rectangular waveguide arm 6 and arm 11 links with two arms 11,12 of the first magic T 3 by waveguide respectively, rectangular waveguide arm 8 links with arm 12), the polarization of rectangular waveguide arm 6,8 lower port outputs is identical, the two-way difference signal of single spin-echo is inputted respectively from two arms 11,12 of the first magic T3, merge into one road difference signal, by E arm 14 outputs of the first magic T3.Rectangular waveguide arm 7,9 is connected (rectangular waveguide arm 7 and arm 11 ' link with two arms 11 ', 12 ' of the second magic T4 by waveguide respectively, rectangular waveguide arm 9 links with arm 12 '), the polarization of rectangular waveguide arm 7,9 lower port outputs is identical, the two-way difference signal of single spin-echo is inputted respectively from two arms 11 ', 12 ' of the second magic T 4, merge into one road difference signal, E arm 14 ' output by the second magic T 4, as shown in Fig. 3 a, above-mentioned two-way difference signal is input to 90 ° of electric bridges 5 from bridge arm 16,17 upper port a, the b of 90 ° of electric bridges 5; The upper port a of 90 ° of electric bridges 5, b receive the two-way difference signal, make 90 ° of the leading or lagging phases of two-way difference signal, thereby form the TE21 dual polarization difference signal of left-handed or dextrorotation, from two lower port c, d outputs of 90 ° of electric bridges, be illustrated in figure 4 as 90 ° of bridge structure schematic diagrames of the present invention respectively.
Be depicted as the present invention's four arm circular polarization TE21 coupler structure schematic diagrames as Fig. 2 a, four arm circular polarization TE21 couplers 1 by four rectangular waveguides 6,7,8,9 and center circle waveguide 10 consist of.Center circle waveguide 10 can be transmitted higher mode TE21 mould satisfying under the certain radius condition, this pattern has two polarization degenerate modes, be depicted as the present invention's four arm circular polarization TE21 coupling principle schematic diagrames as Fig. 2 b, dotted line and solid line represent respectively two polarization degenerate mode electric fields of TE21.With four rectangular waveguides 6,7,8,9 every two one group, symmetrical 180 ° are distributed in a polarization degenerate mode electric field maximum place.Because two polarization degenerate mode maximum angles are 45 °, two groups of rectangular waveguides also are 45 ° of placements of angle.Therefore, according to the Electric Field Distribution of TE21 pattern, rectangular waveguide 6,8 is one group, rectangular waveguide 7,9 is one group, angle between rectangular waveguide 6 and rectangular waveguide 8 is 180 °, and the angle between rectangular waveguide 7 and rectangular waveguide 9 is 180 °, and the angle between two groups of rectangular waveguides is 45 °.By on rectangular waveguide narrow limit, a series of coupling apertures being set, make stiffness of coupling satisfy Bessel and distribute, realize that the accurate 0dB of TE21 mould is coupled to rectangular waveguide, and with the formal output of the main mould TE10 of rectangular waveguide.
By shape and the distribution of rational design coupling aperture, make by the energy of each coupling aperture reverse in the upper port phase place of rectangular waveguide, energy offset, and at the lower port Phase Stacking, energy is maximum.And can suppress the coupling to other patterns such as TE11.By adjusting the number of coupling aperture, change the bandwidth of TE21 coupler.But increase coupling aperture number simply can make the longitudinal size of whole network increase, and this need to do a balance to bandwidth and bulk.In the present invention, adopt the four arm circular polarization TE21 couplers 1 in 32 holes can realize 11% the interior coupling loss＜0.6dB of frequency band, VSWR＜1.5, directivity＜-40dB, to the inhibition degree＞30dB of TE11 pattern.
Be depicted as the present invention's evil spirit T profile schematic diagram (comprising the first magic T, the second magic T) as Fig. 3 a, magic T is double t junction, even each arm all connects matched load, still due to the structural mutation of junction, still can not reach coupling in the junction.Usually under the prerequisite that guarantees double t junction 11,12 arm symmetries, add allotment element (as reactance components such as screw, diaphragm or cones) to eliminate reflection in the junction.In the present invention, adopt 6 stage rank conical structures 15, be depicted as the present invention's evil spirit T generalized section (comprising the first magic T, the second magic T) as Fig. 3 b, not only can make each port match, and reach the purpose of widening bandwidth.By regulating each shoulder height and radius in 6 stage rank conical structures 15, realize VSWR＜1.2 in 18% frequency band, amplitude imbalance degree＜0.3dB, phase unbalance degree＜0.1 °.
By Fig. 3 a as can be known, the first magic T 3 comprises the input 11,12 of two symmetries, H arm 13 and E arm 14, at input 11,12, the junction of H arm 13 and E arm 14 adopts 6 stage rank conical structure 15 conducts to allocate elements, makes four port match of the first magic T3, to eliminate reflection.The second magic T4 comprises the input 11 ', 12 ' of two symmetries, H arm 13 ' and E arm 14 ', at input 11 ', 12 ', the junction of H arm 13 ' and E arm 14 ' adopts 6 stage rank conical structure 15 ' conducts to allocate element, make four port match of the second magic T 4, to eliminate reflection.
As shown in Figure 4,90 ° of electric bridges belong to the 3dB directional coupler in essence, comprise two upper port a, b and two lower port c, d, by changing size and the spacing of coupling aperture, can realize that the two paths of signals amplitude of inputting is identical, phase difference is 90 °, by increasing the number of coupling aperture, realizes broadband operation.The two-way amplitude is identical, the signal of polarization orthogonal arrives port, and is leading or lag behind 90 ° through phase place after 90 ° of electric bridges, forms left-handed or right hand signal.Adopt 90 ° of electric bridges of 4 coupling apertures can realize VSWR＜1.2 in 15% frequency band in the present invention, amplitude imbalance degree＜0.2dB, phase unbalance degree＜0.3 °
The center circle waveguide 10 of TE21 coupler also can produce the TE11 mould when producing the TE21 mould, also there are two polarization degenerate modes in this pattern.Coupling aperture due to appropriate design wall circular polarization TE21 coupler 1, the most of energy of TE11 mould can not be coupled to rectangular waveguide by coupling aperture, and the center circle waveguide 10 of four arm circular polarization TE21 couplers 1 is connected with circular polarizer 2 and produces TE11 dual polarization and signal.
Be depicted as circular polarizer profile schematic diagram of the present invention as Fig. 5 a, Fig. 5 b is depicted as circular polarizer generalized section of the present invention, one step metal thin-wall diaphragm 18 is arranged in circular polarizer 2, by designing length of bench at different levels and height, make one of TE11 mould polarization degenerate mode compare 90 ° of the leading or lagging phases of another pattern, thereby form left-handed or dextrorotation and signal, export from two ports of polarizer respectively.Circular polarizer 2 has 5 grades of step metal thin-wall structures, realizes VSWR in 12% frequency band＜1.2, isolation＜-20dB, axial ratio＜1dB.
Principle of the present invention is as follows:
The TE21 mould of propagating in circular waveguide has two polarization degenerate modes, the a series of coupling apertures that distribute by satisfying Bessel on appropriate design circular waveguide wall, realize that the accurate 0dB of TE21 mould is coupled in four rectangular waveguide arms, be about to TE21 mould energy in circular waveguide and all be coupled to during the rectangle complementary wave leads.Wherein, symmetrical polarization degenerate mode of rectangle coupling arm coupling of every two 180 ° of directions and convert gradually main mould TE10 mould in rectangular waveguide to.Symmetrical rectangular waveguide arm is connected with Wide Band Magic T, and from E arm output difference signal, and the H arm will return circular waveguide with signal reflex.The E arm of two Wide Band Magic T is with after 90 ° of electric bridges are connected, with the two-way amplitude equate, additional 90 ° of phase differences of difference signal of polarization orthogonal, thereby form left-handed or the dextrorotation difference signal, respectively from two ports outputs of electric bridge.
The center circle waveguide of TE21 coupler can produce the TE11 mould when producing the TE21 mould, also there are two polarization degenerate modes in this pattern.By the coupling aperture of appropriate design circular polarization TE21 coupler, the most of energy of TE11 mould can not be coupled to rectangular waveguide by coupling aperture, and passes through the center circle waveguide to the broadband polarizer.One step metal thin-wall diaphragm is arranged in circular polarizer.By designing length of bench at different levels and height, make one of TE11 mould polarization degenerate mode compare 90 ° of the leading or lagging phases of another pattern, thereby form left-handed or dextrorotation and signal, respectively from two ports outputs of polarizer.
This feed network can produce double-circle polarization and signal and difference signal simultaneously, thereby realizes the autotracking function.
The above; only be the embodiment of the best of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.
The content that is not described in detail in specification of the present invention belongs to this area professional and technical personnel's known technology.
Claims (10)
1.Ka frequency range miniaturization broadband multimode autotracking feed network, it is characterized in that: comprise four arm circular polarization TE21 couplers (1), circular polarizer (2), the first magic T (3), the second magic T (4) and 90 ° of electric bridges (5), wherein four arm circular polarization TE21 couplers (1) are by four rectangular waveguides (6, 7, 8, 9) and center circle waveguide (10) form, center circle waveguide (10) is connected with circular polarizer (2) and produces TE11 dual polarization and signal, four rectangular waveguide arms (6, 7, 8, 9) by waveguide and the first magic T (3) be connected magic T (4) and be connected, the first magic T (3) be connected magic T (4) and be connected with 90 ° of electric bridges (5) by waveguide, four rectangular waveguide arms (6, 7, 8, 9) two polarization degenerate modes with TE21 are coupled out respectively, through the first magic T (3), form TE21 dual polarization difference signal after the second magic T (4) and 90 ° of electric bridges (5), described TE11 dual polarization and signal and described TE21 dual polarization difference signal produce simultaneously, thereby realize the autotracking characteristic.
2. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 1, it is characterized in that: the rectangular waveguide arm (6,8) in described four arm circular polarization TE21 couplers (1) is connected by waveguide with two arms (11,12) of the first magic T (3) respectively, the polarization of rectangular waveguide arm (6,8) lower port output is identical, the two-way difference signal of single spin-echo is inputted respectively from two arms (11,12) of the first magic T (3), merge into one road difference signal, by E arm (14) output of the first magic T (3); Rectangular waveguide arm (7,9) in four arm circular polarization TE21 couplers (1) is connected by waveguide with two arms (11 ', 12 ') of the second magic T (4) respectively, the polarization of rectangular waveguide arm (7,9) lower port output is identical, the two-way difference signal of single spin-echo is inputted respectively from two arms (11 ', 12 ') of the second magic T (4), merge into one road difference signal, by E arm (the 14 ') output of the second magic T (4); Described two-way difference signal is input to 90 ° of electric bridges (5) from bridge arm (16, the 17) upper port of 90 ° of electric bridges (5), the upper port of 90 ° of electric bridges (5) receives the two-way difference signal, make 90 ° of the leading or lagging phases of two-way difference signal, thereby form the TE21 dual polarization difference signal of left-handed or dextrorotation, export from two lower port of 90 ° of electric bridges respectively.
3. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 1 and 2, it is characterized in that: the waveguide length that the described first magic T (3) is connected with 90 ° of electric bridges (5) equates with the waveguide length that the second magic T (4) is connected with 90 ° of electric bridges (5).
4. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 1 and 2 is characterized in that: four waveguide lengths that the rectangular waveguide arm (6,7,8,9) in described four arm circular polarization TE21 couplers (1) is connected with the first magic T (3), the second magic T (4) respectively equate.
5. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 1 and 2, it is characterized in that: the rectangular waveguide (6,8) in described four arm circular polarization TE21 couplers (1) is one group, rectangular waveguide (7,9) is one group, angle between rectangular waveguide (6) and rectangular waveguide (8) is 180 °, angle between rectangular waveguide (7) and rectangular waveguide (9) is 180 °, and the angle between two groups of rectangular waveguides is 45 °.
6. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 1 and 2, it is characterized in that: the described first magic T (3) comprises input (11,12), H arm (13) and the E arm (14) of two symmetries, adopt 6 stage rank conical structures (15) as the allotment element in the junction of input (11,12), H arm (13) and E arm (14), make four port match of the first magic T (3), to eliminate reflection; The second magic T (4) comprises input (11 ', 12 '), H arm (13 ') and the E arm (14 ') of two symmetries, adopt 6 stage rank conical structures (15 ') as the allotment element in the junction of input (11 ', 12 '), H arm (13 ') and E arm (14 '), make four port match of the second magic T (4), to eliminate reflection.
7. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 6, it is characterized in that: by regulating each shoulder height and radius in 6 stage rank conical structures (15), realize VSWR in 18% frequency band＜1.2, amplitude imbalance degree＜0.3dB, phase unbalance degree＜0.1 °.
8. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 1 and 2, it is characterized in that: described four arm circular polarization TE21 couplers (1) are according to Bessel distribution design 32 hole four arm couplers out, each TE21 polarization degenerate mode is coupled out by two coupling arms, realize 11% the interior coupling loss＜0.6dB of frequency band, VSWR＜1.5, directivity＜-40dB, to the inhibition degree＞30dB of TE11 pattern.
9. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 1 and 2, it is characterized in that: described circular polarizer (2) has 5 grades of step metal thin-wall structures (18), realize VSWR in 12% frequency band＜1.2, isolation＜-20dB, axial ratio＜1dB.
10. Ka frequency range miniaturization broadband multimode autotracking feed network according to claim 1 and 2, it is characterized in that: described 90 ° of electric bridges (5) are realized VSWR in 15% frequency band＜1.2, amplitude imbalance degree＜0.2dB, phase unbalance degree＜0.3 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532032.7A CN103094718B (en) | 2012-12-06 | 2012-12-06 | Ka frequency range miniaturization broadband multimode auto-tracking feed source network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532032.7A CN103094718B (en) | 2012-12-06 | 2012-12-06 | Ka frequency range miniaturization broadband multimode auto-tracking feed source network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103094718A true CN103094718A (en) | 2013-05-08 |
| CN103094718B CN103094718B (en) | 2015-05-27 |
Family
ID=48207025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210532032.7A Active CN103094718B (en) | 2012-12-06 | 2012-12-06 | Ka frequency range miniaturization broadband multimode auto-tracking feed source network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103094718B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872460A (en) * | 2014-03-27 | 2014-06-18 | 中国电子科技集团公司第五十四研究所 | Coaxial S/X dual-frequency sharing feed source network |
| CN105119055A (en) * | 2015-07-28 | 2015-12-02 | 西安空间无线电技术研究所 | V-band TE21 mode tracking feed source |
| CN104269600B (en) * | 2014-09-19 | 2017-04-12 | 北京遥测技术研究所 | High-density multichannel waveguide network |
| CN112492891A (en) * | 2018-04-27 | 2021-03-12 | 上海诺基亚贝尔股份有限公司 | Multi-band antenna feed |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0014692A2 (en) * | 1979-02-07 | 1980-08-20 | Telefonaktiebolaget L M Ericsson | Mode coupler in an automatic angle tracking system |
| US4367446A (en) * | 1976-04-20 | 1983-01-04 | The Marconi Company Limited | Mode couplers |
| US20030222733A1 (en) * | 2002-05-30 | 2003-12-04 | Ergene Ahmet D. | Tracking feed for multi-band operation |
| US7408427B1 (en) * | 2004-11-12 | 2008-08-05 | Custom Microwave, Inc. | Compact multi-frequency feed with/without tracking |
-
2012
- 2012-12-06 CN CN201210532032.7A patent/CN103094718B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4367446A (en) * | 1976-04-20 | 1983-01-04 | The Marconi Company Limited | Mode couplers |
| EP0014692A2 (en) * | 1979-02-07 | 1980-08-20 | Telefonaktiebolaget L M Ericsson | Mode coupler in an automatic angle tracking system |
| US20030222733A1 (en) * | 2002-05-30 | 2003-12-04 | Ergene Ahmet D. | Tracking feed for multi-band operation |
| US7408427B1 (en) * | 2004-11-12 | 2008-08-05 | Custom Microwave, Inc. | Compact multi-frequency feed with/without tracking |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872460A (en) * | 2014-03-27 | 2014-06-18 | 中国电子科技集团公司第五十四研究所 | Coaxial S/X dual-frequency sharing feed source network |
| CN103872460B (en) * | 2014-03-27 | 2017-04-19 | 中国电子科技集团公司第五十四研究所 | Coaxial S/X dual-frequency sharing feed source network |
| CN104269600B (en) * | 2014-09-19 | 2017-04-12 | 北京遥测技术研究所 | High-density multichannel waveguide network |
| CN105119055A (en) * | 2015-07-28 | 2015-12-02 | 西安空间无线电技术研究所 | V-band TE21 mode tracking feed source |
| CN105119055B (en) * | 2015-07-28 | 2017-11-07 | 西安空间无线电技术研究所 | A kind of V-band TE21 moulds track feed |
| CN112492891A (en) * | 2018-04-27 | 2021-03-12 | 上海诺基亚贝尔股份有限公司 | Multi-band antenna feed |
| CN112492891B (en) * | 2018-04-27 | 2022-06-10 | 上海诺基亚贝尔股份有限公司 | Multi-band antenna feed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103094718B (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102299424B (en) | Dual-frequency dual-polarized feed assembly in C frequency band | |
| CN101656343B (en) | Power divider with new structure | |
| WO2012172565A1 (en) | Wideband waveguide turnstile junction based microwave coupler and monopulse tracking feed system | |
| CN207852927U (en) | 3 × 3Butler matrix feed networks and antenna | |
| CN105119055B (en) | A kind of V-band TE21 moulds track feed | |
| CN103414022B (en) | A kind of 3 × 3Butler matrix and 5 × 6Butler matrix | |
| CN109638476B (en) | Feed network and dual-beam antenna | |
| CN103094718B (en) | Ka frequency range miniaturization broadband multimode auto-tracking feed source network | |
| CN104393389A (en) | Broadband phase shifting power divider with amplitude and phase compensating function | |
| CN105281003A (en) | Radial waveguide power divider based on circularly polarized mode | |
| CN104134842A (en) | Millimeter-wave multi-channel space waveguide power distribution synthesizer and method | |
| EP3163933B1 (en) | Beam forming network and base station antenna | |
| CN111883896B (en) | Directional coupler suitable for millimeter wave and terahertz wave | |
| CN204741082U (en) | Miniaturized broadband multimode auto -tracking feed of ka frequency channel | |
| CN107317082B (en) | Waveguide two-dimensional single-pulse sum-difference network | |
| CN106532215A (en) | High-isolation multi-path radial power divider/synthesizer | |
| CN102509836A (en) | Resistor diaphragm waveguide traveling wave power synthesis amplifier | |
| CN204067545U (en) | A kind of six splitters of Ka frequency range | |
| CN109755746B (en) | Feed network and triple-beam antenna | |
| US10763593B1 (en) | Broadband single pol TX, dual pol RX, circular polarization waveguide network | |
| CN108321483A (en) | Waveguide power divider | |
| CN101587977A (en) | The slab guide sum-difference network | |
| US6118353A (en) | Microwave power divider/combiner having compact structure and flat coupling | |
| CN103594802B (en) | Butler matrix structure | |
| CN107910627B (en) | Terahertz directional coupler for H-plane crack waveguide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |