CN101911389A - Axially displaced ellipse antenna system using helix feed for dual polarization - Google Patents
Axially displaced ellipse antenna system using helix feed for dual polarization Download PDFInfo
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- CN101911389A CN101911389A CN2008801239258A CN200880123925A CN101911389A CN 101911389 A CN101911389 A CN 101911389A CN 2008801239258 A CN2008801239258 A CN 2008801239258A CN 200880123925 A CN200880123925 A CN 200880123925A CN 101911389 A CN101911389 A CN 101911389A
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- feed
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
- H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
- H01Q11/08—Helical antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/247—Supports; Mounting means by structural association with other equipment or articles with receiving set with frequency mixer, e.g. for direct satellite reception or Doppler radar
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
-
- 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
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
-
- 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
- H01Q19/12—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 wherein the surfaces are concave
- H01Q19/13—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 wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
- H01Q19/134—Rear-feeds; Splash plate feeds
- H01Q19/136—Rear-feeds; Splash plate feeds cross-polarised
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aviation & Aerospace Engineering (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
An axially displaced ellipse (ADE) antenna system using a helix feed for dual polarization according to the present invention comprises: an antenna radiator 10 that includes a parabola dish 100 in a parabolic form transmitting and receiving satellite signals, a reflector 200 installed to correspond to a central axis of the parabola dish 100 and reflecting the satellite signals, a helix feed 300 for dual polarization including a helix feed for reception 300 receiving the satellite signals reflected through the parabola dish and the reflector and a helix feed for transmission 320 radiating the satellite signal for transmission to the reflector 200, and a fixing member for feeder 400 installed at the center of the parabola dish 100 and fixedly coupling the helix feeder 300; and an antenna supporting bracket 20 that supports the antenna radiator 10.
Description
Technical field
The present invention relates to a kind of axially displaced ellipse antenna system that is used to transmit and receive, more specifically, relate to a kind of axially displaced ellipse antenna system that adopts helix feed for dual polarization, this axially displaced ellipse antenna system can be by feed is formed helix feed for dual polarization be realized the two-way communication with satellite in the axially displaced ellipse with parabolic antenna, reflector and described feed (ADE), the radio signal that this helix feed for dual polarization can be launched and receive radio signals and be transmitted and received by this helix feed excitation.
Background technology
The traditional ADE satellite antenna that is used to transmit and receive the satellite band signal of C-band uses diameter to be the parabolic antenna more than the 1.2m substantially, and feed horn is installed at the place in the focal position, be collected in prime focus system or Cassegrain (Cassgrain) system at feed horn from the radio signal of parabolic antenna reflection, transmit and receive satellite-signal thus.
Owing to use the C-band satellite antenna of prime focus system or Cassegrain system to use the satellite-signal of 3.42GHz to 6.725GHz, therefore, need have the large-scale antenna of high-gain, so that satellite communication is steady than low-frequency range.
In recent years, will store up as the communication means of code division multiple access (CDMA) method and introduce in the satellite communication, thereby even in C-band, also can utilize size to realize two-way communication than the little a lot of parabolic antenna of traditional antenna.
Yet,, need large-scale feed horn in order to arrive the C-band antenna than the little a lot of antenna applications of traditional antenna according to the size of prime focus system or Cassegrain system.In other words, the size of feed horn is big in low-frequency range, rather than in high band, therefore, the size that produces feed horn becomes big problem in the C-band satellite antenna that uses low-frequency range.
And, when utilizing feed horn to carry out two-way communication, being used to form the polarizer of expectation polarization and the converter of the orthogonal modes that is used for separating the polarization that transmits and receives wave band should be provided with separately, thereby, produce installation process complexity and expense problem of higher.
Summary of the invention
(technical problem)
The present invention is proposed to address the above problem.The purpose of this invention is to provide a kind of employing dual polarization axially displaced ellipse (ADE) antenna system, wherein, described ADE antenna comprises the helix feed for dual polarization that is used to transmit and receive, this helix feed for dual polarization can be handled the satellite-signal in emission band and the receiving wave range respectively, can launch also receivable antenna being used as, thereby feed can be made miniaturization, and helix feed has the effect of polarizer and orthogonal modes converter, thereby polarizer and orthogonal modes converter needn't be set separately.
(technical scheme)
To achieve these goals, the invention provides a kind of axially displaced ellipse (ADE) antenna system of using helix feed for dual polarization, this ADE antenna system comprises antenna radiator and antenna Support bracket, this antenna Support bracket supports described antenna radiator, and this antenna radiator comprises: be parabolic form to transmit and receive the parabolic antenna of satellite-signal; Reflector, this reflector is mounted to corresponding with the central axis of described parabolic antenna, and the reflector satellite signal; Helix feed for dual polarization, this helix feed for dual polarization comprise that the reception of reception by the satellite-signal of described parabolic antenna and described reflector reflection is used to be transmitted into the emission helix feed of the satellite-signal of described reflector with helix feed and radiation; And the feed fixed part, this feed is installed in the center of described parabolic antenna and the described helix feed that is permanently connected with fixed part.
The reception of described helix feed is configured to comprise with helix feed with helix feed and emission: receive and use the cylindrical screw body, this reception is wound on the outside of described reception with helix feed obliquely with the spiral conducting line of cylindrical screw body; And emission cylindrical screw body, this emission is wound on the outside of described emission with helix feed obliquely with the spiral conducting line of cylindrical screw body, and described reception is fixedly connected to the spiral ground plate that is connected with an end of fixed part with described feed with the cylindrical screw body, and described emission is installed in described reception with in the helicoid with helicoid.
Preferably, be wound up into described reception with on the helicoid and described emission be wound into the end convolution of described spiral conducting line on the direction of described reflector on the helicoid littler with spirochetal diameter than described reception with helicoid and described emission so that the wavelength of described satellite-signal is even and improve axial ratio.
In addition, described feed is provided with low noise amplifier (LNA) with the inside of fixed part, this low noise amplifier low noise amplifies from the satellite-signal of described reception with the helix feed emission, and described antenna Support bracket is provided with: low noise block downconverter (LNB), and the satellite-signal that this low noise block downconverter will be amplified from the low noise of described LNA emission converts the satellite-signal with Mid Frequency to; And upconverter (BUC), this upconverter emission is used to be transmitted into the satellite-signal of described emission with helix feed.
And, described feed can be provided with LNB or BUC with the inside of fixed part, this LNB receives from the satellite-signal of described reception with the helix feed emission, and converts them to the intermediate frequency satellite-signal, and this BUC emission is used to be transmitted into the satellite-signal of described emission with helix feed.
(beneficial effect)
Be connected with reception by employing and handle all satellite received signals and satellite emission signal with the feed of helix feed, have the effect of the structure that can simplify the described antenna system of manufacturing according to axially displaced ellipse (ADE) antenna system of employing helix feed for dual polarization of the present invention with different frequency range with helix feed and emission.
In addition, diameter by interval between control helix feed and the reflector and helix feed, the number of turns, circle are at interval etc., the isolation of adopting axially displaced ellipse (ADE) antenna system of helix feed for dual polarization to have to improve between emission port and the receiving port, be used for the axial ratio of each frequency range and the effect of impedance characteristic, thereby described antenna system is installed on the mobile object of ship or vehicle and so on, even during movement also can make the two-way communication of satellite steady.
Description of drawings
To know above-mentioned and other purpose, feature and advantage of the present invention from the explanation of the following preferred implementation that provides in conjunction with the accompanying drawings, in the accompanying drawing:
Fig. 1 is the stereogram according to the ADE antenna system of employing helix feed for dual polarization of the present invention;
Fig. 2 is the end view according to the ADE antenna system of employing helix feed for dual polarization of the present invention;
Fig. 3 is the amplification view according to the antenna radiator of the ADE antenna system of employing helix feed for dual polarization of the present invention;
Fig. 4 shows the schematic diagram according to the operating principle of ADE antenna system of the present invention;
Fig. 5 is the decomposition side view according to helix feed of the present invention;
Fig. 6 is the end view according to helix feed of the present invention; And
Fig. 7 is the plane graph according to helix feed of the present invention.
(detailed description of main element)
10: antenna radiator 20: the antenna Support bracket
100: parabolic antenna 200: reflector
210: reflector rack 300: helix feed
310: receive and use helix feed
311: receive and use helicoid
312: spiral conducting line 313: fixed head
320: the emission helix feed
321: the emission helicoid
321a: the line of rabbet joint
322: spiral conducting line
330: retainer ring
340: the spiral ground plate
341: receiving port
342: emission port
345: coaxial cable
400: the feed fixed part
410: low noise amplifier (LNA)
500: low noise block downconverter (LNB)
600: upconverter (BUC)
Embodiment
Following with reference to accompanying drawing detailed description embodiments of the present invention.
Fig. 1 is the stereogram according to the ADE antenna system of employing helix feed for dual polarization of the present invention, Fig. 2 is the end view that adopts the ADE antenna system of helix feed for dual polarization, and Fig. 3 is the amplification view of antenna radiator that adopts the ADE antenna system of helix feed for dual polarization.
As shown in Fig. 1 to 3, the antenna radiator 10 that adopts the ADE antenna system of helix feed for dual polarization to be configured to comprise to transmit and receive satellite-signal and the antenna Support bracket 20 of supporting antenna radiator 10.
Fig. 4 shows the schematic diagram according to the operating principle of ADE antenna system of the present invention.
As shown in Figure 4, the central axis of parabolic antenna 100, reflector 200 and helix feed 300 is consistent each other, by parabolic antenna 100 receive and the satellite-signal of reflection from reflector 200 secondary reflections, and be launched into helix feed 300, on the contrary, 200 reflections from the satellite-signal of helix feed 300 radiation from reflector, and be launched into parabolic antenna 100, the satellite-signal that these parabolic antenna 100 secondary reflections are received, and they are transmitted into satellite.
For this reason, parabolic antenna 100 form have can the reflector satellite signal curved surface, wherein, this curved surface shaped becomes paraboloidal rotation form, the central axis of this paraboloidal axis runout parabolic antenna 100, and in reflector 200, form the focus of ring form.
Helix feed 300 is configured to comprise and receives with cylindrical screw feed 310 and be installed in this receptions with the interior emission cylindrical screw feed 320 of helix feed 310.
Fig. 5 is the decomposition side view according to helix feed of the present invention.
Receive and use helix feed 310 to form with following form, that is, the spiral conducting line 312 of 1mm is wound up into the cylindrical screw body along being formed on to receive with the inclination wire casing in cylindrical screw body 311 outsides.
At this moment, reception remains diameter, the number of turns and the circle interval that needs in the design conventional helical antenna at interval with the diameter of cylindrical screw body 311 and the number of turns and the circle of spiral conducting line 312.In embodiments of the present invention, being wound on the reception that receives with helix feed 310 reels clockwise with the spiral conducting line 312 in helicoid 311 outsides.
An end that receives with helicoid 311 forms annular, and its other end is formed with fixed head 313 highlightedly.Receive with helicoid 311 and be connected to the end of feed with fixed part 400 by round screw thread ground plate 340 and the retainer ring 330 that connects.Retainer ring 330 is formed with groove, and this groove can receive and be formed on the fixed head 313 that receives with in the other end of helicoid 311, and fixes this fixed head 313, thereby, receive and firmly be fixed to spiral ground plate 340 with helicoid 311.The spiral conducting line 312 that receives with helix feed 310 is connected with the receiving port 341 that is installed in spiral ground plate 340 places.
Emission also constitutes with following form with helix feed 320,, the spiral conducting line 322 of 1mm is wound up into emission cylindrical screw body 321 along being formed on emission with the inclination wire casing in cylindrical screw body 321 outsides that is.At this moment, emission uses the diameter of cylindrical screw body 321 less than the diameter that receives with cylindrical screw body 311, thereby emission can be inserted to receive with cylindrical screw body 321 and be used in the cylindrical screw body 311.In addition, be wound up into emission and form rightabout with the incline direction of the spiral conducting line 322 of helicoid 321, with the incline direction symmetry that is wound up into the spiral conducting line 312 that receives usefulness helicoid 311.In this execution mode of the present invention, be wound on emission and reel counterclockwise with the spiral conducting line 322 in cylindrical screw body 321 outsides with the emission of helix feed 320.
Emission forms annular with an end of cylindrical screw body 321, and its other end is connected to the other end or the spiral ground plate 340 that receives with helicoid 311.Emission is connected with the emission port 342 that is installed in spiral ground plate 340 places with the spiral conducting line 322 of helix feed 320.
Feed is provided with LNA410 with the inside of fixed part, wherein, the receiving port 341 of LNA410 by being installed in spiral ground plate 340 places receives from the noise component(s) that receives satellite-signal with helix feed 310, reduction satellite-signal and amplifies this satellite-signal, and the satellite-signal of the coaxial cable 345 by 50 Ω after will amplifying is transmitted into the low noise block downconverter (LNB) 500 that is installed in antenna Support bracket 20 places.Simultaneously, the coaxial cable 345 of the emission port 342 that is installed in spiral ground plate 340 places by 50 Ω from upconverter (BUC) to emission with helix feed 320 signal of launching an artificial satellite.
The LNB500 that is installed in antenna Support bracket 20 places will amplify satellite-signal by coaxial cable 345 to convert Mid Frequency to and they are transmitted into the equipment of controller from the low noise of LAN410 emission, BUC 600 becomes emission to be transmitted into the equipment of emission with helix feed 320 with the satellite-signal of frequency range and with them the conversion of signals to satellite to be launched.
Although above-mentioned execution mode of the present invention has been described LNA400 is installed in the inside that the feed that is fixed with helix feed 300 is used fixed part 400, and LNB500 and BUC600 are installed in antenna Support bracket 20 places, can suitably change its installation site.For example, LNB500 or BUC600 optionally are installed in feed with in the fixed part 400, perhaps LNB500 and BUC600 are installed in feed with in the fixed part 400, to improve space availability ratio, the feasible overall dimensions that can reduce antenna system.In the time of in LNB500 being installed in feed usefulness fixed part 400,, therefore, can omitting LAN410 is installed because LNB500 has the function of LNA410.
Simultaneously, helix feed 310 is relevant with design frequency with 320 diameter, and preferably, the circumference ratio (π) of spiral conducting line 312 and a circle of 322 has 0.93 to 1 λ.And, form progressive wave along spiral conducting line 312 and 322 electric currents that flow, thereby helix feed 310 and 322 reproducible circularly polarized excellent qualities, influence the horizontal pace of electric current at interval as the circle of the spiral conducting line 312 of the variable of level angle and 322, with control circularly polarized phase place, and by the circle of spiral conducting line 312 and 322 at interval and the helix feed 310 determined of the number of turns and 320 circle length on definite antenna gain, play an important role.Because the current strength of the feed part of close helix feed 310 and 320 is stronger, therefore, impedance variation is subjected to the influence at the interval between spiral ground plate 340 and spiral conducting line 312 and 322 bigger.And, according to along the spiral conducting line 312 of helix feed 310 and 320 and 322 current's intensity that flow and phase place and receive with helix feed 310 and this reception with the emission in the helix feed 310 with helix feed 320 and between disturb this interference effect isolation.As a result, use helix feed 310 and emission with the interference between the helix feed 320, preferably, make interference minimum at interval by the circle of controlling spiral conducting line 312 and 322 in order to reduce to receive.
For this reason, in embodiments of the present invention, the diameter of round screw thread ground plate 340 forms 65mm, the reception that is connected to round screw thread ground plate 340 forms 32mm with the diameter of the main body 311 of helix feed 310, and the number of turns of spiral conducting line 312 is that 4.5 circles and its circle form 14mm at interval.In addition, be positioned to receive and form 14mm, and the number of turns of spiral conducting line 322 is 7.5 to enclose, and it forms 7mm at interval with the diameter of the main body 321 of helix feed 320 with the emission of helix feed 310.
As mentioned above, receiving with helix feed 310 and launching diameter, the number of turns and circle with helix feed 320 influences isolation between receiving port 341 and the emission port 342 at interval, is used for the axial ratio feature of each frequency and according to the impedance matching of the condition of design variable, so they should be taken into full account.
Therefore, preferably, suitably control axial ratio feature and the impedance matching that consideration is wherein considered the design variable of the antenna gain of the isolation between the corresponding port, is used for each frequency.
Fig. 6 is the end view according to helix feed of the present invention, and Fig. 7 is the plane graph according to helix feed of the present invention.
Be installed in helix feed 320 under the situation about receiving in emission with the helix feed for dual polarization 300 in the helix feed 310, the performance of helix feed 300 depend on the whole polarization that characterizes satellite-signal the ratio such as grade axial ratio and transmit and received signal between shield effectiveness.Particularly, under the situation of helix feed for dual polarization 300, axial ratio is subjected to from emission helix feed 320 and the reception influence of the end on the direction of reflector 200 of helix feed 310 to 1/4 direction of the wavelength of satellite-signal.
As shown in Figs. 5 to 7, in embodiments of the present invention, being wound up into to receive to be wound into than receiving with helicoid 311 with the end convolution of spiral conducting line 312 and 322 on the direction of reflector 200 ground of helicoid 3214 with helicoid 311 and emission uses the diameter of helicoid 321 little with launching, and therefore termination is reeled, and makes that the wavelength that can make satellite-signal is even, improves the shield effectiveness between axial ratio and raising emission and the received signal.
Simultaneously, in Fig. 5, after the manufacturing reception is used helicoid 321 with helicoid 311 and emission respectively, they all are connected to spiral ground plate 340, feasible emission is positioned at helicoid 321 and receives with helicoid 311.As shown in Figure 6, receive with helix feed 310 and launch and to be made into integration to being connected to spiral ground plate 340 with helix feed 320.
Like this, reception according to the embodiment of the present invention may be made in various forms with helicoid 311 and emission with helicoid 321, makes emission be positioned at helicoid 321 and receives with helicoid 311.
As mentioned above, the ADE antenna system of employing helix feed for dual polarization is arranged to pass through also receiving satellite signals of helix feed 300 emissions, and this helix feed 300 comprises receiving uses helix feed 310 and emission helix feed 320.
ADE antenna system according to the present invention is installed on the mobile object of storage as vehicle or ship and so on, make it can be used as the satellite antenna system on the mobile object that is installed in the position that transmits and receives satellite-signal while satellite tracking, and be used as the fixed satellite antenna system that is installed in fixing point and transmits and receives satellite-signal.In addition, the ADE antenna system is coated with under the situation of protection with cap in the outside of this ADE antenna system and uses, and perhaps in some cases, can use removing under the situation of cap certainly.
Those skilled in the art will recognize that disclosed design can easily be used the basis that makes an amendment or be designed for execution other execution mode identical with the object of the invention with embodiment in the above stated specification.Those of skill in the art also will appreciate that this execution mode that is equal to does not deviate from the spirit and scope of the present invention described in the claims.
Claims (5)
1. axially displaced ellipse (ADE) antenna system that adopts helix feed for dual polarization, described ADE antenna system comprises:
Antenna radiator (10), this antenna radiator (10) comprising: the parabolic antenna that is used to transmit and receive satellite-signal (100) that is parabolic form; Reflector (200), this reflector (200) is mounted to corresponding with the central axis of described parabolic antenna (100), and reflects described satellite-signal; Helix feed for dual polarization (300), this helix feed for dual polarization (300) comprise that the reception that receives the described satellite-signal by described parabolic antenna and the reflection of described reflector is used to be transmitted into the emission usefulness helix feed (320) of the described satellite-signal of described reflector (200) with helix feed (310) and radiation; And feed fixed part (400), this feed is installed in the center of described parabolic antenna (100) and the described helix feed (300) that is permanently connected with fixed part (400); And
Antenna Support bracket (20), this antenna Support bracket (20) supports described antenna radiator (10).
2. ADE antenna system according to claim 1, wherein, the described reception of described helix feed (300) is configured to comprise with helix feed (320) with helix feed (310) and described emission: receive with cylindrical screw body (311), this reception is wound on the outside of described reception with helix feed (310) obliquely with the spiral conducting line (312) of cylindrical screw body (311); And emission cylindrical screw body (321), this emission is wound on the outside of described emission with helix feed (312) obliquely with the spiral conducting line (322) of cylindrical screw body (321), and described reception is fixedly connected to the spiral ground plate (340) that is connected with an end of fixed part (400) with described feed with cylindrical screw body (311), and described emission is installed in described reception with in the helicoid (311) with helicoid (321).
3. ADE antenna system according to claim 2, wherein, be wound up into described reception with the described spiral conducting line (312) on the helicoid (311) with to be wound up into described emission littler with the diameter of helicoid (321) with helicoid (311) and described emission than described reception by the helical coil coiled with the end of described spiral conducting line (322) on the direction of described reflector (200) on the helicoid (321), so that the wavelength of described satellite-signal is even and improve axial ratio.
4. ADE antenna system according to claim 1, wherein, described feed is provided with low noise amplifier (LNA) (410) with the inside of fixed part (400), and this low noise amplifier low noise amplifies from the satellite-signal of described reception with helix feed (310) emission, and
Described antenna Support bracket (20) is provided with: low noise block downconverter (LNB) (500), and the satellite-signal that this low noise block downconverter will be amplified from the low noise of described LNA (410) emission converts the satellite-signal with Mid Frequency to; And upconverter (BUC) (600), this upconverter emission is used to be transmitted into the satellite-signal of described emission with helix feed (320).
5. ADE antenna system according to claim 1, wherein, described feed is provided with LNB (500) or BUC (600) with the inside of fixed part (400), described LNB receives from described reception and converts the intermediate frequency satellite-signal to the satellite-signal of helix feed (310) emission and with described satellite-signal, and described BUC emission is used to be transmitted into the satellite-signal of described emission with helix feed (320).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2007-0125365 | 2007-12-05 | ||
| KR1020070125365A KR100961221B1 (en) | 2007-12-05 | 2007-12-05 | Axially Displaced Ellipse Antenna System Using Helix feed for Dual polarization |
| PCT/KR2008/007058 WO2009072781A1 (en) | 2007-12-05 | 2008-11-28 | Axially displaced ellipse antenna system using helix feed for dual polarization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101911389A true CN101911389A (en) | 2010-12-08 |
Family
ID=40717908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801239258A Pending CN101911389A (en) | 2007-12-05 | 2008-11-28 | Axially displaced ellipse antenna system using helix feed for dual polarization |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2227839A1 (en) |
| KR (1) | KR100961221B1 (en) |
| CN (1) | CN101911389A (en) |
| AU (1) | AU2008332129A1 (en) |
| WO (1) | WO2009072781A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101137285B1 (en) * | 2010-10-28 | 2012-04-20 | 위월드 주식회사 | Micro antenna feeder for wide band |
| CN104919650A (en) * | 2013-01-09 | 2015-09-16 | 泰纳股份公司 | A dual antenna |
| CN107579769B (en) * | 2017-10-19 | 2024-04-12 | 广州联星科技有限公司 | Transceiver and satellite communication terminal device |
| CN109860978B (en) * | 2019-01-25 | 2020-10-16 | 东阳市川泽户外用品有限公司 | Antenna for receiving television signal |
| CN110312107A (en) * | 2019-05-29 | 2019-10-08 | 泉州天地星电子有限公司 | A kind of AVS satellite television receiver for supporting a variety of decoding processes |
| WO2023235538A2 (en) * | 2022-06-03 | 2023-12-07 | Freefall Aerospace, Inc. | Tracking antenna with stationary reflector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003083995A1 (en) * | 2002-03-27 | 2003-10-09 | The Boeing Company | Dual reflector antenna with waveguide diplexer and omt mounted on back of main reflector |
| CN1470089A (en) * | 2000-10-12 | 2004-01-21 | ��ķɭ���ó��˾ | Improvements to transmission/reception sources of electromagnetic waves for multireflector antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7403030B2 (en) * | 2004-12-17 | 2008-07-22 | Teradyne, Inc. | Using parametric measurement units as a source of power for a device under test |
-
2007
- 2007-12-05 KR KR1020070125365A patent/KR100961221B1/en active IP Right Grant
-
2008
- 2008-11-28 AU AU2008332129A patent/AU2008332129A1/en not_active Abandoned
- 2008-11-28 EP EP08857871A patent/EP2227839A1/en not_active Withdrawn
- 2008-11-28 CN CN2008801239258A patent/CN101911389A/en active Pending
- 2008-11-28 WO PCT/KR2008/007058 patent/WO2009072781A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470089A (en) * | 2000-10-12 | 2004-01-21 | ��ķɭ���ó��˾ | Improvements to transmission/reception sources of electromagnetic waves for multireflector antenna |
| WO2003083995A1 (en) * | 2002-03-27 | 2003-10-09 | The Boeing Company | Dual reflector antenna with waveguide diplexer and omt mounted on back of main reflector |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2008332129A1 (en) | 2009-06-11 |
| KR20090058668A (en) | 2009-06-10 |
| EP2227839A1 (en) | 2010-09-15 |
| KR100961221B1 (en) | 2010-06-03 |
| WO2009072781A1 (en) | 2009-06-11 |
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Application publication date: 20101208 |