CN106785469A - Double-frequency coaxial feed and the antenna with it - Google Patents
Double-frequency coaxial feed and the antenna with it Download PDFInfo
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- CN106785469A CN106785469A CN201611093978.2A CN201611093978A CN106785469A CN 106785469 A CN106785469 A CN 106785469A CN 201611093978 A CN201611093978 A CN 201611093978A CN 106785469 A CN106785469 A CN 106785469A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0208—Corrugated horns
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01Q15/14—Reflecting surfaces; Equivalent structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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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 invention discloses a kind of double-frequency coaxial feed and the antenna with it, its feed includes the inner wire and outer conductor that are coaxially disposed；Outer conductor is the coaxial horn for being operated in L frequency ranges, and inner wire is the dielectric rod loudspeaker for being operated in S frequency ranges；Dielectric rod loudspeaker are arranged in the inner chamber of coaxial horn；Coaxial horn includes the waveguide segment, transverse groove section and the choke groove section that set gradually；And the radius of waveguide segment, transverse groove section and choke groove section increases successively；Transverse groove section offers matching slot on the inside of waveguide segment, and waveguide segment is connected with transverse groove section by matching slot.It uses the coaxial horn and the coaxial nested structure of the dielectric rod loudspeaker for being operated in S frequency ranges for being operated in L frequency ranges, so that the feed can operate at L frequency ranges and S frequency ranges, change and the resistance matching problems such as wave beam of the coaxial horn under the conditions of ultra wide band are efficiently solved, a kind of ultra wide band L/S Double frequency feed sources for covering aeronautical satellite frequency range are become.
Description
Technical field
The present invention relates to antenna technical field, and in particular to a kind of double-frequency coaxial feed and the antenna with it.
Background technology
Feed is an important component of reflector antenna system, and its effect is with electricity by the signal from radio frequency
The form of magnetic wave is to reflection surface radiation, while receiving by the signal from satellite of reflecting surface.Be presently used for satellite communication and
The antenna of measurement and control area mainly has broadband, high-frequency and double frequency or multifrequency common technology.Wherein, double frequency or multifrequency common technology
Solve the problems, such as a set of antenna multiplexed multiple frequency ranges.Coaxial feed leads to L and S frequency band signals as embedded Double frequency feed source
Two channel transfers are crossed, the bandwidth of operation of feed is increased.
At present, report that more coaxial double-frequency feed is generally C/Ku two-bands, L/C two-bands and S/X two-band coaxial feeds
Source, its common feature is that its relative bandwidth is narrower and two working bands are apart from each other.Further, since the photograph of ring-focus antenna requirement
Half-angle is penetrated for 40 degree or so, this requires that the bore of coaxial feed is larger, therefore applied in front feed antenna current coaxial feed more
In, the application on double-reflecting face ring-focus antenna is less.As a result, the range of application of coaxial feed is restricted, with one
Fixed limitation.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of double-frequency coaxial feed, to solve the application of traditional coaxial feed
Scope is restricted, the problem with certain limitation.
Based on a kind of double-frequency coaxial feed that the object of the invention is provided, it is characterised in that including the inner wire being coaxially disposed
And outer conductor；
The outer conductor is the coaxial horn for being operated in L frequency ranges, and the inner wire is the dielectric rod loudspeaker for being operated in S frequency ranges
；
The dielectric rod loudspeaker are arranged in the inner chamber of the coaxial horn；
The coaxial horn includes the waveguide segment, transverse groove section and the choke groove section that set gradually；And
The radius of the waveguide segment, transverse groove section and choke groove section increases successively；
The transverse groove section offers matching slot, the waveguide segment and transverse groove section on the inside of the waveguide segment
It is connected by the matching slot.
Wherein in one embodiment, the transverse groove section is integrally formed with choke groove section.
Wherein in one embodiment, be provided between the coaxial horn and the dielectric rod loudspeaker first medium ring and
Second medium ring；
The first medium ring and the second medium ring are set on the outer wall of the dielectric rod loudspeaker, and are rabbeted
On the inwall of the coaxial horn.
Wherein in one embodiment, the choke groove section offers a plurality of choke groove；And
The depth of every choke groove is the 1/4 of L band operation wavelength, and the slot pitch of the choke groove is L frequency range works
Make the 1/5 of wavelength.
Wherein in one embodiment, the inwall of the transverse groove section offers a plurality of identical lateral wave groove；
The length of the lateral wave groove is the 1/8~1/4 of L band operation wavelength.
Wherein in one embodiment, the radius of the waveguide segment is less than
Wherein, b is the radius of the outer conductor, and a is the inner wire radius.
Wherein in one embodiment, the dielectric rod loudspeaker include circular waveguide section and dielectric rod；
The medium bar part is plugged on the inside of circular waveguide section, and with the transverse groove section of the coaxial horn
Homonymy.
Wherein in one embodiment, the part that the dielectric rod is connected with circular waveguide section is connected by medium screw
Connect.
Wherein in one embodiment, the dielectric rod loudspeaker also include that metal matches ring and the second choke groove；
The metal matching ring set is located on the outer wall of the circular waveguide section；
Second choke groove is arranged on the circular waveguide section and is connected at position with the dielectric rod.
Wherein in one embodiment, the radius of the circular waveguide section is less than the dielectric rod loudspeaker maximum functional wavelength
1/1.64。
Accordingly, present invention also offers a kind of antenna, including as above any described double-frequency coaxial feed.
Using above-mentioned technical proposal, the present invention can at least obtain following technique effects：
It passes through to set a kind of double-frequency coaxial feed, and the feed includes the inner wire and outer conductor that are coaxially disposed, and uses
The coaxial horn of L frequency ranges is operated in as outer conductor, the dielectric rod loudspeaker of S frequency ranges is operated in as inner wire, by dielectric rod loudspeaker
Be arranged in the inner chamber of coaxial horn to realize being coaxially disposed for inner wire and outer conductor, finally realize double-frequency coaxial feed
Coaxial nested structure.Thus, it uses the coaxial horn that is operated in L frequency ranges and is operated in the dielectric rod loudspeaker of S frequency ranges and is formed
Coaxial nested structure so that double-frequency coaxial feed can operate at L frequency ranges and S frequency ranges, and this is also achieved that the broadband of L frequency ranges connects
Up observing and controlling, descending observing and controlling and the broadband reception with S frequency ranges are received, finally enables that the feed is applied to bireflectance face ring Jiao day
The broadband application of line, so as to the range of application for efficiently solving traditional coaxial feed is restricted, with certain limitation
Problem.
Meanwhile, it as the coaxial horn of outer conductor also by will be set to waveguide segment, the transverse groove that radius increases successively
Section and choke groove section, matching slot is offered in transverse groove section on the inside of waveguide segment, and waveguide segment is with transverse groove section by matching
Groove is connected, so as to set transverse groove section as common segment using on coaxial horn, compared to traditional coaxial horn, it can
To transmit the higher mode that can effectively suppress to have encouraged during L frequency band signals again.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, institute in being described to the embodiment of the present invention below
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also implement according to the present invention
The content and these accompanying drawings of example obtain other accompanying drawings.
Fig. 1 is the double-reflecting face ring-focus antenna schematic diagram described in the present embodiment；
Fig. 2 is the structural representation of the double-frequency coaxial feed described in the present embodiment；
Fig. 3 is the generalized section of the double-frequency coaxial feed described in the present embodiment；
Fig. 4 is 40 degree of feed directional diagrams of L frequency ranges illumination angle in double-frequency coaxial feed described in the present embodiment；
Fig. 5 is 40 degree of feed directional diagrams of S frequency ranges illumination angle in double-frequency coaxial feed described in the present embodiment；
Fig. 6 is L band antenna gain patterns in double-frequency coaxial feed described in the present embodiment；
Fig. 7 is S band antenna gain patterns in double-frequency coaxial feed described in the present embodiment.
Through accompanying drawing, it should be noted that similar label is used to describe same or analogous element, feature and structure.
Specific embodiment
The disclosure for providing description referring to the drawings to help comprehensive understanding to be limited by claim and its equivalent
Various embodiments.Hereinafter description includes the various details for helping understand, but these details will be considered as only being example
Property.Therefore, it will be appreciated by those of ordinary skill in the art that do not depart from the scope of the present disclosure and spirit in the case of, can be right
Various embodiments described herein makes various changes and modifications.In addition, in order to clear and succinct, known function and construction are retouched
Stating to be omitted.
Term and vocabulary used in following description and claims are not limited to document implication, but only by inventor
For enabling the disclosure clearly and as one man to be understood.Therefore, to those skilled in the art it should be apparent that carrying
The description of various embodiments of this disclosure is merely to exemplary purpose under being provided with, and it is unrestricted by appended claims and its
The purpose of the disclosure that equivalent is limited.
It should be understood that unless context is clearly indicated in addition, otherwise singulative also includes plural.Thus, for example,
Reference to " assembly surface " includes the reference to one or more such surfaces.
Fig. 1 is the structural representation of the ring-focus antenna 100 of the double-reflecting face described in the present embodiment.With reference to Fig. 1, the present embodiment
Described double-reflecting face ring-focus antenna is made up of figuration primary reflection surface 110, subreflector 120 and double-frequency coaxial feed 130.Its
In, primary reflection surface 110 is the paraboloid of revolution, and subreflector 120 is the ellipsoid of rotation, an oval focus and primary reflection surface
Focus overlap, the phase center of another focus and double-frequency coaxial feed 130 overlaps.Double-frequency coaxial feed 130 is 13 meters of antennas
The headend equipment of system, for signal of communication provides radio frequency path.Reflection is converged at after the reflected face reflection of signal from satellite
Face focus, is that double-frequency coaxial feed 130 is received；Launch after the reflected face reflection of signal sent from double-frequency coaxial feed 130 to
Satellite.
Wherein, referring to figs. 2 and 3 the overall structure diagram of the double-frequency coaxial feed 130 respectively described in the present embodiment
And cross-sectional view.Specifically, in the double-frequency coaxial feed 130 described in the present embodiment, it mainly includes being coaxially disposed
Inner wire and outer conductor.Wherein, outer conductor is the coaxial horn 131 for being operated in L frequency ranges.Inner wire is to be operated in S frequency ranges
Dielectric rod loudspeaker 132.The dielectric rod loudspeaker 132 for being operated in S frequency ranges are arranged on the inner chamber of the coaxial horn 131 for being operated in L frequency ranges
In, so as to realize the coaxial nested structure of inner wire and outer conductor.
More specifically, with reference to Fig. 3, in the double-frequency coaxial feed 130 described in the present embodiment, as the coaxial of outer conductor
Loudspeaker 131 include waveguide segment 1311, the transverse groove section 1312 for setting gradually and choke groove section 1313.Wherein, waveguide segment 1311, horizontal stroke
Radius to groove section 1312 and choke groove section 1313 increases successively.That is, the radius of choke groove section 1313 is more than transverse groove section 1312
Radius, transverse groove section 1312 radius more than waveguide segment 1311 radius.Also, transverse groove section 1312 is near waveguide segment 1311
Inner side offer matching slot 13120, thus waveguide segment 1311 is connected by the matching slot 13120 and transverse groove sections 1312.
Transverse groove section 1312 is then connected as a single entity with choke groove section 1313.
Also, offer a plurality of lateral wave groove 13121 in the inner side of transverse groove section 1312.The a plurality of lateral wave groove
13121 is identical, and the length of every lateral wave groove 13121 is the 1/8~1/4 of L band operation wavelength.It is by transverse direction
Groove section 1312 opens up a plurality of identical lateral wave groove 13121, is to transmit high order due to being operated in the coaxial horn 131 of L frequency ranges
Mould TE11 moulds, so the E faces and H faces of feed directional diagram are not changed not etc., its etc. are realized from there through loading horizontal line wave groove 13121
Change.Also, it is used as common segment by loading lateral wave groove 13121 on the coaxial horn 131 of L frequency ranges, so can be
During transmission L frequency band signals, can effectively suppress the higher mode for having encouraged.Go out in open circles waveguide antenna simultaneously for S frequency ranges
The higher mode for having encouraged carries out effective model conversion, is changed into rotationally symmetrical HE moulds and radiate, and realizes symmetrical direction
Figure.
Meanwhile, with reference to Fig. 3, in the double-frequency coaxial feed 130 described in the present embodiment, it is operated in the coaxial horn of L frequency ranges
In 131, choke groove section 1313 accordingly offers a plurality of first choke groove 13130.Also, every depth of the first choke groove 13130
Degree is the 1/4 of L band operation wavelength, and the slot pitch of every first choke groove 13130 is the 1/5 of L band operation wavelength.This
Place, it is necessary to explanation, it will be appreciated by persons skilled in the art that set on the coaxial horn 131 for be operated in L frequency ranges gripping
Chute section 1313, and choke groove section 1313 inwall open up a plurality of first choke groove 13130, its effect also for realization
The gradeization of directional diagram.
In addition, also, it should be noted that the pattern of the coaxial horn 131 for the being operated in L frequency ranges radiation described in the present embodiment
It is TE11 moulds, is the higher mode of coaxial waveguide.The main mould of coaxial waveguide is TEM moulds, as shown in figure 3, a is coaxial inner conductor half
Footpath, i.e. S frequency ranges circular waveguide external diameter；B is coaxial outer conductor radius.The cut-off of the higher mode TE11 and higher mode TE21 of coaxial waveguide
Wavelength is as follows：
TE11 mould cutoff wavelengths：λcTE11=π (b+a)；
TE21 mould cutoff wavelengths：
The radius span of L frequency range coaxial waveguides can be calculated by above formula.That is, the radius of waveguide segment 1311 is small
InFurther, since L frequency ranges input needs 50 ohms impedance match, therefore by formula
The radius of L frequency range coaxial waveguides can be calculated.
Further, referring to figs. 2 and 3 in the double-frequency coaxial feed 130 described in the present embodiment, as inner wire
The dielectric rod loudspeaker 132 for being operated in S frequency ranges radiation mode be TE21 moulds and TE11 moulds.It specifically includes circular waveguide section 1321
With dielectric rod 1322.
Wherein, need to meet autotracking requirement due to being operated in the dielectric rod loudspeaker of S frequency ranges, therefore circular waveguide section 1321
1/1.64 of radius less than the maximum functional wavelength of dielectric rod loudspeaker 132.The material of dielectric rod 1322 is then preferably dielectric constant
2.1 polytetrafluoroethylene (PTFE).Also, the part of dielectric rod 1322 is plugged on the inside of circular waveguide section 1321, exposed in circular waveguide section
Part outside 1321 then with the transverse groove section 1312 and choke groove 1313 homonymies of section of coaxial horn 131.
It should be noted that with reference to Fig. 3, the part that dielectric rod 1322 is connected with circular waveguide section 1321 passes through medium screw
1323 connections.Also, dielectric rod 1322 is plugged on part (that is, dielectric rod 1322 and circular waveguide section inside circular waveguide section 1321
1321 parts being connected) be matching section, the matching section be set to it is step-like, so as to realize good standing wave by step transition
Characteristic.
Meanwhile, with reference to Fig. 3, gain and the illumination angle pair of dielectric rod loudspeaker 132 due to the effect length of dielectric rod 1322
The edge level value answered, and L frequency ranges and the gathering of S frequency ranges are relatively near, easily cause coupling, therefore in the dielectric rod described in the present embodiment
In loudspeaker 132, it passes through the second choke groove 1325 of loading is improved.Specifically, second choke groove 1325 is carried in medium
At the position that bar 1322 is connected with circular waveguide section 1321, and it is arranged on the outer wall of dielectric rod 1322.
Also, referring to figs. 2 and 3 it is also arranged metal matching ring 1324 on the outer wall of circular waveguide section 1321, by this
Metal matching ring 1324 is further improved to L stationary wave characteristics., wherein it is desired to explanation, metal matching ring 1324
Number can be multiple.Preferably, in the present embodiment, it passes through to set three metals matching rings 1324 and enters the further of moving standing wave
Improve.Also, three metal matching rings 1324 are arranged in order and are set on the outer wall of circular waveguide section 1321.
Simultaneously as the dielectric rod loudspeaker 132 for being operated in S frequency ranges consider to need single-pulse track in design, so circle
The radius of waveguide segment 1321 is larger.The radiation mode of S frequency range dielectric rods loudspeaker 132 is main mould TE11 moulds and higher mode TE21 moulds.
As shown in figure 3, radiuses of the R for circular waveguide section 1321, the i.e. internal diameter of S frequency ranges dielectric rod loudspeaker 132, main mould TE11 and higher mode
TM01 moulds, TE21 moulds, TE01/TM11 moulds cutoff wavelength it is as follows：
TE11 mould cutoff wavelengths：λcTE11=3.41R；
TM01 mould cutoff wavelengths：λcTM01=2.62R；
TE21 mould cutoff wavelengths：λcTE21=2.06R；
TE01/TM01 mould cutoff wavelengths：λcTE01/TM01=1.64R；
The internal diameter R of S frequency range dielectric rod loudspeaker can be calculated by above formula.
Further, referring to figs. 2 and 3 being nested in as the dielectric rod loudspeaker 132 for being operated in S frequency ranges of inner wire
As outer conductor the inner chamber of coaxial horn 131 for being operated in L frequency ranges when, it is contemplated that the stability of phase center, its tool
Body is realized by the support and matching of first medium ring 133 and second medium ring 134.
Specifically, referring to figs. 2 and 3 first medium ring 133 and second medium ring 134 are set in dielectric rod loudspeaker 132
Outer wall on (specially on the outer wall of circular waveguide section 1321), and rabbet on the inwall of coaxial horn 131 (specially waveguide segment
On the inwall of 1311 inwall and transverse groove section 1312), its simple structure, it is easy to accomplish.Also, it is by dielectric rod loudspeaker
First medium ring 133 and second medium ring 134 are arranged on 132 outer wall to L standing waves while also acting improvement result.
, wherein it is desired to explanation, first medium ring 133 and second medium ring 134 are located at metal respectively matches ring 1324
Both sides.That is, metal matching ring 1324 is arranged between first medium ring 133 and second medium ring 134, and second medium ring
134 are set close to matching slot 13120.
Further, any of the above-described kind of double-frequency coaxial feed 130 of the present embodiment of structure is used to be presented for L/S double-frequency coaxials
Source illumination angle is 40 degree, is applied to 13 meters of heavy caliber double-reflecting face ring-focus antennas, is to meet system to receive the navigation of L frequency ranges, and S is frequently
The ultra-broadband dual-frequency feed of Duan Shanghang observing and controlling, the descending observing and controlling of S frequency ranges and S frequency range broadband receptions.Wherein, Fig. 4 and Fig. 5 represent feed
Directional diagram, abscissa is theta values, and unit is degree；Ordinate is range value, and unit is dB values.Fig. 6 and Fig. 7 represent that antenna increases
Beneficial directional diagram, abscissa is theta values, and unit is degree；Ordinate is gain, and unit is dB values.
Thus, the double-frequency coaxial feed 130 described in the present embodiment, can be applied to the ring-focus antenna of double-reflecting face, use
The coaxial horn 131 for being operated in L frequency ranges and the coaxial nested structure of the dielectric rod loudspeaker 132 for being operated in S frequency ranges so that the feed
L frequency ranges and S frequency ranges are can operate at, the changes such as wave beam of the coaxial horn under the conditions of ultra wide band is efficiently solved and impedance matching is asked
Topic so that L/S Double frequency feed sources directional diagram and consistent phase center with gradeization in 40 degree of illumination angle, becomes one kind
Cover the ultra wide band L/S Double frequency feed sources of aeronautical satellite frequency range.
Also, it passes through the setting using L-band broadband corrugated horn and lateral wave groove 13121 of L frequency ranges coaxial horn 131
Meter, realizes the change such as wave beam of L frequency ranges, and its groove depth of the first choke groove 13130 is the 1/8~1/4 of operation wavelength；S frequency range loudspeaker
132 use medium rod type, and S frequency range bandwidth requirements can be met by the size of optimized medium bar 1322 and lower end matching section；Meanwhile,
Carried out by first medium ring 133 and second medium ring 134 between L frequency ranges coaxial horn 131 and S frequency range dielectric rods loudspeaker 132
Support, improves the stationary wave characteristic of L frequency ranges.Three metals matching ring 1324 of the outer wall of S frequency range dielectric rods loudspeaker 132 similarly changes
It has been apt to the standing wave of L frequency ranges.
Although the various embodiments with reference to the disclosure have shown and described the disclosure, those skilled in the art will manage
Solution, in the case where the spirit and scope of the present disclosure being defined by the appended claims and the equivalents thereof are not departed from, can enter to it
Various changes in row form and details.
Claims (11)
1. a kind of double-frequency coaxial feed, it is characterised in that including the inner wire and outer conductor that are coaxially disposed；
The outer conductor is the coaxial horn for being operated in L frequency ranges, and the inner wire is the dielectric rod loudspeaker for being operated in S frequency ranges；
The dielectric rod loudspeaker are arranged in the inner chamber of the coaxial horn；
The coaxial horn includes the waveguide segment, transverse groove section and the choke groove section that set gradually；And
The radius of the waveguide segment, transverse groove section and choke groove section increases successively；
The transverse groove section offers matching slot on the inside of the waveguide segment, and the waveguide segment passes through with transverse groove section
The matching slot is connected.
2. double-frequency coaxial feed as claimed in claim 1, it is characterised in that the transverse groove section and choke groove section one
Shaping.
3. double-frequency coaxial feed as claimed in claim 1, it is characterised in that the coaxial horn and the dielectric rod loudspeaker it
Between be provided with first medium ring and second medium ring；
The first medium ring and the second medium ring are set on the outer wall of the dielectric rod loudspeaker, and are rabbeted described
On the inwall of coaxial horn.
4. double-frequency coaxial feed as claimed in claim 1, it is characterised in that the choke groove section offers a plurality of choke groove；
And
The depth of every choke groove is the 1/4 of L band operation wavelength, and the slot pitch of the choke groove is L band operation ripples
Long 1/5.
5. double-frequency coaxial feed as claimed in claim 1, it is characterised in that the inwall of the transverse groove section offers a plurality of phase
Same lateral wave groove；
The length of the lateral wave groove is the 1/8~1/4 of L band operation wavelength.
6. double-frequency coaxial feed as claimed in claim 1, it is characterised in that the radius of the waveguide segment is less than
Wherein, b is the radius of the outer conductor, and a is the inner wire radius.
7. the double-frequency coaxial feed as described in any one of claim 1 to 6, it is characterised in that the dielectric rod loudspeaker include circle
Waveguide segment and dielectric rod；
The medium bar part is plugged on the inside of the circular waveguide section, and same with the transverse groove section of the coaxial horn
Side.
8. double-frequency coaxial feed as claimed in claim 7, it is characterised in that the dielectric rod is connected with circular waveguide section
Part pass through medium mode connects for screw.
9. double-frequency coaxial feed as claimed in claim 7, it is characterised in that the dielectric rod loudspeaker also include that metal matches ring
With the second choke groove；
The metal matching ring set is located on the outer wall of the circular waveguide section；
Second choke groove is arranged on the circular waveguide section and is connected at position with the dielectric rod.
10. double-frequency coaxial feed as claimed in claim 7, it is characterised in that the radius of the circular waveguide section is less than being given an account of
The 1/1.64 of matter bar loudspeaker maximum functional wavelength.
11. a kind of antennas, it is characterised in that including the double-frequency coaxial feed described in any one of claim 1 to 10.
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| CN108134182A (en) * | 2017-12-05 | 2018-06-08 | 安徽四创电子股份有限公司 | A kind of Double frequency feed source loudspeaker including becket |
| CN109411870A (en) * | 2018-10-31 | 2019-03-01 | 广东盛路通信科技股份有限公司 | A kind of parabolic antenna feed source of double frequency shared |
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| CN109802235A (en) * | 2017-11-16 | 2019-05-24 | 华为技术有限公司 | A kind of surface wave excitation device |
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| WO2020263760A1 (en) | 2019-06-24 | 2020-12-30 | Sea Tel, Inc. ( Dba Cobham Satcom) | Coaxial feed for multiband antenna |
| CN112397882A (en) * | 2020-09-30 | 2021-02-23 | 北京空间飞行器总体设计部 | Wide-beam high-gain ranging antenna for high-orbit satellite |
| CN112615162A (en) * | 2020-12-14 | 2021-04-06 | 西安电子科技大学 | Common-caliber three-frequency multi-mode horn antenna |
| US11139572B2 (en) | 2018-07-26 | 2021-10-05 | Huawei Technologies Co., Ltd. | Feed apparatus, dual-band microwave antenna, and dual-band antenna device |
| CN114759354A (en) * | 2022-04-02 | 2022-07-15 | 华南理工大学 | Miniaturized broadband stable beam horn feed source antenna |
| CN115458912A (en) * | 2022-08-31 | 2022-12-09 | 西安电子科技大学 | High-isolation double-horn antenna structure |
| EP4231457A4 (en) * | 2020-11-20 | 2023-12-13 | Huawei Technologies Co., Ltd. | Dual-frequency feed source and dual-frequency antenna |
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| CN107546475A (en) * | 2017-09-06 | 2018-01-05 | 哈尔滨工业大学 | A kind of dual-band antenna feed applied to 5G communications |
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| CN109802235A (en) * | 2017-11-16 | 2019-05-24 | 华为技术有限公司 | A kind of surface wave excitation device |
| CN108134182A (en) * | 2017-12-05 | 2018-06-08 | 安徽四创电子股份有限公司 | A kind of Double frequency feed source loudspeaker including becket |
| CN108134182B (en) * | 2017-12-05 | 2020-03-17 | 安徽四创电子股份有限公司 | Double-frequency feed source horn comprising metal ring |
| US11139572B2 (en) | 2018-07-26 | 2021-10-05 | Huawei Technologies Co., Ltd. | Feed apparatus, dual-band microwave antenna, and dual-band antenna device |
| CN109411870A (en) * | 2018-10-31 | 2019-03-01 | 广东盛路通信科技股份有限公司 | A kind of parabolic antenna feed source of double frequency shared |
| CN109411870B (en) * | 2018-10-31 | 2023-12-15 | 广东盛路通信科技股份有限公司 | Dual-frequency shared parabolic antenna feed source |
| CN109473775A (en) * | 2019-01-07 | 2019-03-15 | 北京西宝电子技术有限责任公司 | Ku/E waveband double-frequency one feed |
| WO2020263760A1 (en) | 2019-06-24 | 2020-12-30 | Sea Tel, Inc. ( Dba Cobham Satcom) | Coaxial feed for multiband antenna |
| EP3987612A4 (en) * | 2019-06-24 | 2023-08-02 | Sea Tel, Inc. (DBA Cobham Satcom) | Coaxial feed for multiband antenna |
| CN110808768A (en) * | 2019-10-22 | 2020-02-18 | 中山赛思普电子科技有限公司 | Low earth orbit satellite ground station |
| CN111799546B (en) * | 2020-05-26 | 2023-04-28 | 安徽四创电子股份有限公司 | Millimeter wave broadband corrugated horn and manufacturing method thereof |
| CN111799546A (en) * | 2020-05-26 | 2020-10-20 | 安徽四创电子股份有限公司 | Millimeter wave broadband corrugated horn and manufacturing method thereof |
| CN112397882A (en) * | 2020-09-30 | 2021-02-23 | 北京空间飞行器总体设计部 | Wide-beam high-gain ranging antenna for high-orbit satellite |
| CN112397882B (en) * | 2020-09-30 | 2023-09-01 | 北京空间飞行器总体设计部 | Wide-beam high-gain ranging antenna for high-orbit satellite |
| EP4231457A4 (en) * | 2020-11-20 | 2023-12-13 | Huawei Technologies Co., Ltd. | Dual-frequency feed source and dual-frequency antenna |
| CN112615162A (en) * | 2020-12-14 | 2021-04-06 | 西安电子科技大学 | Common-caliber three-frequency multi-mode horn antenna |
| CN114759354A (en) * | 2022-04-02 | 2022-07-15 | 华南理工大学 | Miniaturized broadband stable beam horn feed source antenna |
| CN115458912A (en) * | 2022-08-31 | 2022-12-09 | 西安电子科技大学 | High-isolation double-horn antenna structure |
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