EP3317914A1 - Improvements to receiving and/or transmitting apparatus for satellite transmitted data - Google Patents
Improvements to receiving and/or transmitting apparatus for satellite transmitted dataInfo
- Publication number
- EP3317914A1 EP3317914A1 EP16744451.2A EP16744451A EP3317914A1 EP 3317914 A1 EP3317914 A1 EP 3317914A1 EP 16744451 A EP16744451 A EP 16744451A EP 3317914 A1 EP3317914 A1 EP 3317914A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- data signals
- assembly
- waveguide
- bands
- feed horn
- 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
- 230000010287 polarization Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 238000005388 cross polarization Methods 0.000 claims description 2
- 239000013256 coordination polymer Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
- H01Q13/025—Multimode horn antennas; Horns using higher mode of propagation
-
- 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
- H01Q13/025—Multimode horn antennas; Horns using higher mode of propagation
- H01Q13/0258—Orthomode horns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
- H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
- H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
- H01Q5/55—Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas
-
- 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
Definitions
- the invention which is the subject of this application, relates to the provision of improved receiving and transmitting apparatus for use at a location.
- the apparatus is provided to receive and/or transmit, process data and allow the data to be moved onwardly to a distribution system by which at least some of the received data can be passed to apparatus at one or more user locations .
- processing apparatus can be used to generate video and/or audio and/or other data services such as broadband, which can be provided to a user via a display screen and/or speakers and thereby allow selected television and/or radio programmes and/or other data services to be provided to the user at that location.
- the invention relates more specifically to the apparatus which is provided at the receiving location and which apparatus typically includes at least one antenna or dish which is directed and positioned so as to transmit and/or receive data signals which are reflected to the same from a broadcast location, via one or more satellites.
- the antenna is provided with an arm which extends to the front of the same and at the free or distal end of the arm there is provided a waveguide through which the data signals which are reflected to the same from the antenna, pass.
- the waveguide is connected to one or more Low Noise Blocks and Block Up Converter (BUC) .
- BUC Low Noise Block and BUC is provided to allow the passage of data therethrough in selected paths in different polarisations, such as Circular and Linear, and/or in different orthogonal components such as vertical and horizontal.
- the data signals may also be up or down converted to suit particular frequencies and operating requirements .
- the LNB typically also has a number of outputs for the different data signal paths and, in one embodiment, the format of the data may be converted from an RF mode to an optical mode. In either case the data is then carried from the LNB to the one or more user locations using suitable cabling such as coaxial cables or fibre optic cables as appropriate.
- the LNB typically comprises the required processing circuitry implemented on one or more printed circuit boards which are located by and within a housing and the data enters the housing from a feed horn which his provided upstream of the LNB to allow data which is reflected from the antenna dish to be collected and passed to the LNB for processing.
- the feedhorn is provided so as to only collect data signals which are within a predefined frequency range or frequency ranges.
- the feedhorn in a manner in which the same is used in conjunction with a VSAT offset antenna which is required to be used for the reception of data signals which allow the provision of co-located Ku and Ka band satellite services simultaneously.
- the Ka band covers the frequencies in the range of 18.1 to 20.2 GHz (the 20Ghz band) and 27.9 to 30 GHz (the 30 GHz band)
- the Ku band covers the frequencies of 10.7- 12.75 GHz of the electromagnetic spectrum in the microwave range of frequencies.
- the services which can be provided include Ku band DBS TV reception and Ka band TV and internet access.
- Figures 2a and b show a dual feed horn design for a first satellite for TV service data signals at 28.2 ° E and a second satellite for TV and internet service data signals at 31 ° E on a GD 74 offset dish
- An aim of the present invention is therefore to provide apparatus which allows the reception and transmission of data signals at different frequency ranges from the same satellite or from satellites which are co-located.
- apparatus for the reception of data signals transmitted from a satellite or co- located satellites and/or the transmission of data signals, said data signals provided in a plurality of frequency bands, wherein said apparatus includes a feed horn assembly to allow the said data signals in at least three of said frequency bands to utilise the same channel provided along the feed-horn assembly.
- the feed horn assembly is a triple band feed horn assembly.
- the feed horn assembly produces a common beam in three frequency bands (Ku, K and Ka) to illuminate a dish antenna and diplex the Ku band from the K/Ka band with separated output ports.
- the said Ku output is fed to a Low Noise Block (LNB) directly.
- LNB Low Noise Block
- the LNB is provided integrally with the feed horn assembly.
- the said Ku output is fed to a universal Ku interface flange to which a Ku LNB can be connected.
- the K/Ka output is a universal Ka flange with which a Ka transceiver can be interfaced.
- the feed horn assembly can operate with respect to the data signal frequency bands of Ku 10.7— 12.75 GHz, Ka Receiving 18.1 - 20.2 GHz and Ka transmission of 27.9 -30 GHz
- the polarisations of the respective data signal bands can be Vertical (V) and Horizontal (H) linear or Right Hand (RH) and Left Hand (LH) circular and the same can be determined independently for each band
- the impedance matching is -20 dB return loss in all bands Typically an isolation of >25 dB is achieved in bands between two orthogonal polarizations, and >40 dB across the bands .
- the feed horn assembly includes a substantially tubular inner waveguide for the Ka band data signals.
- a dielectric radiator is provided at, or adjacent to, a first end of the said inner waveguide, typically that at which the received data signals enter and transmitted data signals leave, the feedhorn assembly.
- the radiator for the K/Ka band is shaped such as a dome or cone, and is selectively formed so as to select the beamwidth.
- the bandwidth is wider when the radiator is dome shaped than if, for example, the radiator was conically shaped.
- a second waveguide is provided which surrounds the first waveguide.
- the outer or second waveguide is provided to receive the data signals at a lower frequency band than the data signals received by the first or inner waveguide.
- the feedhorn assembly includes a cross structure which separates the waveguide into four separate quadrants and effectively creates four quasi-rectangular waveguides between the outer and inner waveguides.
- the data signals can then be passed along each of the quadrants to a combiner at the opposing end of the waveguide from which the data signals enter the assembly.
- At least one ridge is located in each quasi- rectangular waveguide to increase the frequency bandwidth.
- At least one Ka reject filter is located between the first and second waveguides to minimise Ka data signals leaking from the Ku output.
- the feed horn includes a series of corrugated ribs which flare outwardly towards the end of the assembly through which the data signals are received and emitted.
- a satellite data transmission system including a feedhorn assembly as herein defined.
- Figure 1 illustrate schematically a satellite broadcast system of the type to which the invention relates
- FIGS 2a and b illustrates a conventional dual feedhorn apparatus
- Figure 3 illustrates a first connection embodiment of a feedhorn assembly in accordance with the invention
- FIG. 4 illustrates a second connection embodiment of a feed horn assembly in accordance with the invention
- Figures 5a and b illustrate elevation and plan views of the feed horn assembly of Figures 3 and 4;
- Figures 6a and b illustrate graphically test results obtained using the feedhorn assembly of Figures 5a and b;
- FIGS 7a and b illustrate a further embodiment of a feedhorn in accordance with the invention.
- FIG. 8 illustrates a further feedhorn assembly in accordance with the invention.
- apparatus 2 provided at a receiving location 4 such as a domestic premises to receive and process data received from a satellite broadcast system.
- the apparatus includes at the receiving location at least one antenna dish 6 connected to a feed horn assembly 8 and LNB's 10 mounted on an arm 12 which depends to the front of the antenna 6..
- the LNB's are connected to cables 14 to allow the onward distribution of the data therefrom to within the receiving location 4.
- the data signals 16 are transmitted from the same satellite 18 or may be transmitted from collated satellites in terms of their orbital position.
- FIGs 2a and b illustrates a conventional apparatus arrangement in which satellite signals are received from two separate non co located satellites and in this case the dish A receives data for a first data signal and a second data signal from two different satellites.
- the conventional multiple feed horn B as shown in Figure 2b has a first feedhorn C for Ka data signals and which is coupled to an LNB via Ka Interface flange D and a second and separate horn E for Ku data signals which can be coupled to a separate LNB via interface F.
- This design can therefore be relatively straight forward. It is to the problem where the two sets of data signals are received from the same satellite or collocated satellites that the current invention is addressed.
- Figures 3 and 4 show two embodiments of the invention and in both cases there is provided a common feed horn assembly 20 which is capable of receiving data signals at a Ka band frequency and at a Ku band frequency and also transmitting data signals therefrom.
- the assembly is provided with a Ku interface 22 and a Ka interface 24 to allow connection to Ku and Ka LNB's 26,28 respectively.
- the assembly has a first end 32 through which the received Ka and Ku data signals enter the assembly in the direction 34 via corrugated ribs 36 and from which transmitted data passes in the direction of arrow 38 and via a domed radiator cap 42.
- the cap 42 is connected to an inner waveguide 44 which is surrounded by an outer waveguide 46.
- the outer waveguides is split into quadrant sectors 48, 50,52, 54 at the portion 56 located towards the rear end 58 of the assembly.
- the inner waveguide 44 has a tapered or conical end portion 60 which is located within the said portion 56 of the outer waveguide.
- one or more polarisation means to allow the received data signals to be separated and passed to the ports 62,64 for the Ku LNB and the port 66 for the Ka LNB.
- the feedhorn assembly 100 again includes a first, inner waveguide 102 and a second, outer, waveguide 104 which in combination form a channel 106 along which selected data signals can pass at selected frequency bands.
- a polyrod 108 extends along the waveguide channel and has at a first end 110 a cone shape although it should be appreciated that the cone shape can be replaced by a ball or another shape, and a corrugated feedhorn 111.
- the second, outer, waveguide is divided by a cross wall structure 122 into sectors 114, 116,118,120 so as to have a sectoral or quasi-rectangular waveguide form.
- linear ridges 124 are provided at spaced locations around the central axis 126 and extend along at least a portion of the waveguide depending from the said end 1 2.
- a series of Ka reject filters, in the form of iris rings 128 are located at spaced intervals along the axis 126 and are located in between the outer and inner waveguides 102, 104.
- FIG 8 a further embodiment is illustrated in perspective with the various components illustrated and in this case the feedhorn assembly has a polyrod 108 which has a ball shape 130 at it's end. The same has similar components to those shown in Figures 7a and b and similar reference numbers are used where appropriate.
- Ka reject filters 132 can be selectively positioned as indicated by the arrows and again, towards the end 112 of the channel 106 the outer waveguide is split into four sectorsll4,116, 118,120 by cross structure walls 122.
- OMT Ortho Mode Transducer
- LNB Ortho Mode Transducer
- the Ka data signals arte typiocally connected to the channel 106 at the end 112 thereof.
- apparatus for receiving and/ or transmitting data signals via satellite, and in particular to a feedhorn assembly which allows the provision of data signals carried on at least triple frequency bands to be achieved with a common feed horn assembly.
- the assembly provides for three frequency bands of operation with two orthogonal polarizations (V &H LP or LH&RH CP) in each band.
- the feedhorn assembly in accordance with the invention also allows the possibility of utilising and interfacing with further components without the requirement to redesign the same, such as Ku LNBs and/ or OMT's, Ka transceivers and dish antennas.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1511436.6A GB201511436D0 (en) | 2015-06-30 | 2015-06-30 | Improvements to receiving and/or transmitting apparatus for satellite transmitted data |
PCT/GB2016/051981 WO2017001856A1 (en) | 2015-06-30 | 2016-06-30 | Improvements to receiving and/or transmitting apparatus for satellite transmitted data |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3317914A1 true EP3317914A1 (en) | 2018-05-09 |
EP3317914B1 EP3317914B1 (en) | 2023-11-01 |
Family
ID=53872422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16744451.2A Active EP3317914B1 (en) | 2015-06-30 | 2016-06-30 | Improvements to receiving and/or transmitting apparatus for satellite transmitted data |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3317914B1 (en) |
GB (2) | GB201511436D0 (en) |
WO (1) | WO2017001856A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110429378A (en) * | 2019-07-30 | 2019-11-08 | 中国电子科技集团公司第三十八研究所 | A kind of double frequency Shared aperture Waveguide slot radiating guide, antenna array and design method |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108737796A (en) * | 2017-04-17 | 2018-11-02 | 东莞百电子有限公司 | A kind of novel combination S frequency ranges and KU frequency range tuner structures |
CN108039583B (en) * | 2017-10-31 | 2020-12-22 | 安徽四创电子股份有限公司 | High-frequency-band millimeter wave feed source |
CN108011159B (en) * | 2017-11-09 | 2021-02-05 | 电子科技大学 | Rectangular waveguide TE10Mode-circular waveguide TE01Mode converter |
CN111146590B (en) * | 2017-12-05 | 2021-06-15 | 安徽四创电子股份有限公司 | Improved double-frequency feed source loudspeaker |
CN109728445B (en) * | 2018-12-19 | 2020-09-18 | 北京遥测技术研究所 | Three-frequency-band measurement and control remote-sensing guard multifunctional composite feed source |
CN110768017B (en) * | 2019-10-21 | 2020-05-19 | 中国科学院国家天文台 | SKA ultra-wideband refrigeration miniaturized four-ridge horn feed source and application thereof |
CN112468224B (en) * | 2020-12-17 | 2022-05-31 | 泰州市柯普尼通讯设备有限公司 | Ship satellite VSAT system dynamic stabilization system and stabilization method |
CN112468167B (en) * | 2020-12-17 | 2021-12-03 | 泰州市柯普尼通讯设备有限公司 | Interference information filtering device for ship satellite VSAT system |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4258366A (en) * | 1979-01-31 | 1981-03-24 | Nasa | Multifrequency broadband polarized horn antenna |
US5109232A (en) * | 1990-02-20 | 1992-04-28 | Andrew Corporation | Dual frequency antenna feed with apertured channel |
US5635944A (en) * | 1994-12-15 | 1997-06-03 | Unisys Corporation | Multi-band antenna feed with switchably shared I/O port |
US6005528A (en) * | 1995-03-01 | 1999-12-21 | Raytheon Company | Dual band feed with integrated mode transducer |
US5793334A (en) * | 1996-08-14 | 1998-08-11 | L-3 Communications Corporation | Shrouded horn feed assembly |
EP1158597A1 (en) * | 2000-05-23 | 2001-11-28 | Newtec cy. | Ka/Ku dual band feedhorn and orthomode transducer (OMT) |
US6982679B2 (en) * | 2003-10-27 | 2006-01-03 | Harris Corporation | Coaxial horn antenna system |
US7408427B1 (en) * | 2004-11-12 | 2008-08-05 | Custom Microwave, Inc. | Compact multi-frequency feed with/without tracking |
US8537068B2 (en) * | 2010-01-26 | 2013-09-17 | Raytheon Company | Method and apparatus for tri-band feed with pseudo-monopulse tracking |
WO2015035463A1 (en) * | 2013-09-13 | 2015-03-19 | Commonwealth Scientific And Industrial Research Organisation | Quad ridged feed horn including a dielectric spear |
KR101444659B1 (en) * | 2013-10-04 | 2014-09-24 | 국방과학연구소 | ANTENNA SYSTEM FOR simultaneous Triple-band Satellite Communication |
-
2015
- 2015-06-30 GB GBGB1511436.6A patent/GB201511436D0/en not_active Ceased
-
2016
- 2016-06-30 EP EP16744451.2A patent/EP3317914B1/en active Active
- 2016-06-30 GB GB1611420.9A patent/GB2540675A/en not_active Withdrawn
- 2016-06-30 WO PCT/GB2016/051981 patent/WO2017001856A1/en active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110429378A (en) * | 2019-07-30 | 2019-11-08 | 中国电子科技集团公司第三十八研究所 | A kind of double frequency Shared aperture Waveguide slot radiating guide, antenna array and design method |
Also Published As
Publication number | Publication date |
---|---|
GB201511436D0 (en) | 2015-08-12 |
GB201611420D0 (en) | 2016-08-17 |
GB2540675A (en) | 2017-01-25 |
WO2017001856A1 (en) | 2017-01-05 |
EP3317914B1 (en) | 2023-11-01 |
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