EP2132825B1 - Microwave transmit/receive antenna feed - Google Patents

Microwave transmit/receive antenna feed Download PDF

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Publication number
EP2132825B1
EP2132825B1 EP08724386A EP08724386A EP2132825B1 EP 2132825 B1 EP2132825 B1 EP 2132825B1 EP 08724386 A EP08724386 A EP 08724386A EP 08724386 A EP08724386 A EP 08724386A EP 2132825 B1 EP2132825 B1 EP 2132825B1
Authority
EP
European Patent Office
Prior art keywords
antenna feed
waveguide
microwave
microwave antenna
electronic
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.)
Active
Application number
EP08724386A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2132825A1 (en
Inventor
Ales Zeleznik
Boris Sijanec
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to SI200830598T priority Critical patent/SI2132825T1/sl
Priority to PL08724386T priority patent/PL2132825T3/pl
Publication of EP2132825A1 publication Critical patent/EP2132825A1/en
Application granted granted Critical
Publication of EP2132825B1 publication Critical patent/EP2132825B1/en
Priority to CY20121100377T priority patent/CY1112803T1/el
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction

Definitions

  • the present invention relates to a microwave transmit and/or receive antenna feed configuration for a microwave communication system.
  • the scope of the present invention encompasses an antenna feed for transmitting and/or receiving orthogonal components of a linearly polarized microwave radio signal which enables reception in one or two frequency ranges, reception and transmission in two frequency ranges, or transmission in one or two frequency ranges.
  • the antenna feed of the invention is utilized in conjunction with a reflective surface, usually a parabolic dish, or in an embodiment with a funnel-shaped radiator.
  • the antenna feed configuration according to US Patent No. 5,463,407 overcomes many of the said disadvantages by employing a structure with two resonators, wherein the smaller resonator in the form of an independent mechanical assembly is built into the bigger resonator, while the electronic section in the form of an independent unit is mounted directly to the side of the antenna feed. It is a disadvantage of such arrangement that it comprises a greater number of components and thus requires precision in the process of assembling the antenna feed. Although the coaxial lines between the electronic circuitry and the antenna feed are substantially shorter, they nevertheless still subsist and require additional U-shaped channels to be arranged within the resonator.
  • EP-A-1 191 624 relates to a ground terminal outdoor unit (ODU) for reception and communication of broadcast data from and/or to a remote data broadcast location.
  • the ODU includes a transmitter, a horn, and a Low Noise Bock (LNB) unit.
  • the LNB unit includes an Ortho mode transducer (OMT) with no waveguide.
  • OMT Ortho mode transducer
  • US-A-6 111 547 relates to a multiple-feed signal receiving device having a plurality of waveguide assembly and circuit layers for microwave signals.
  • EP-A-0 853 348 relates to a waveguide input apparatus comprising a waveguide and a circuit board.
  • the inventive antenna feed is used in combination with a reflective surface, usually a parabolic dish, or in an embodiment with a funnel-shaped radiator, wherein the antenna feed and the related electronic circuitry constitute one compact physical unit having no, or only a bare minimum of, coaxial lines between the electronic circuitry and the antenna.
  • the object is attained by a microwave transmit/receive antenna feed as per the independent patent claim.
  • Figure 1 shows the inventive antenna feed 1 in combination with a parabolic reflector 4.
  • the feed 1 is fixed to the reflector 4 by means of a support 3 and is energywise and signalwise connected at a substantially lower frequency, in the order of several tens of MHz, to the corresponding electrical device via a coaxial line 2.
  • the transmit frequencies are in the range of 5 GHz to 6 GHz, whereas the receive frequencies are in the range of 11 GHz to 13 GHz.
  • the transmit frequency range is from 5.470 GHz to 5.725 GHz and the receive frequency range is from 11.7 GHz to 12.1 GHz.
  • the antenna feed 1 is substantially cylinder-shaped. This means that it is fashioned in the shape of a metal cylinder internally comprising two longitudinal circular concentric cylindrical cavities, wherein the larger-diameter cavity is situated at the front end of the feed 1 and the smaller-diameter cavity extends toward the rear end of the feed 1.
  • the term "rear end of the feed 1" is used to designate the end where the cap 9 with the attachment connector 8 is located.
  • the said two cavities are circular waveguides, the diameters whereof are adapted to the two frequency ranges of operation of the antenna feed.
  • the waveguides are shown in Figure 3 , the waveguide with the larger diameter being designated by the numeral 10 and the waveguide with the smaller diameter being designated by the numeral 11.
  • the cylinder wall or mantle of the basic cylinder shape is removed along most of its length, leaving four mutually perpendicular planes 7, which, in turn, define a square with rounded-off corners as may be seen in Figure 6 .
  • the planes 7 may have equal or different lengths.
  • the said planes 7 have recesses which, in the embodiment at hand, are shaped so as to allow the electronic components of the electronic circuitry 14 to sink either individually separated or in separate groups into single recesses 6.
  • the electronic circuitry 14 comprises a substrate, such as a printed circuit board, and the electronic components mounted thereon, wherein the electronic components are only disposed on one side of the substrate.
  • the electronic circuitry 14 is of such dimensions that the substrate thereof rests on the edge of the recess of the plane 7 and is accommodated by a depression having a depth approximately equal to the thickness of the substrate of the electronic circuitry 14.
  • the structure is shown in Figures 3 and 4 .
  • the function of such shaped recesses 6 is to reduce the mutual effects of the electromagnetic emissions generated by the electronic components of the electronic circuitry 14.
  • All the required electronic components of the transmitter and/or receiver are disposed on one side of each electronic circuitry 14 functionally coupled to some of the neighboring electronic circuitries 14.
  • there are two bores in planes 7 for accommodating the two probes 12 and 13.
  • the probes 12 and 13 perform the function of a transmit and/or receive antenna.
  • the probe 12 is inserted through the first plane 7 so as to protrude into the larger-diameter waveguide 10.
  • the probe 13 is inserted through the second plane 7, which is perpendicular to the first plane 7, so as to protrude into the smaller-diameter waveguide 11.
  • electronic circuitries 14 are laid and fixed to the said planes 7 in such a way that the electronic components mounted thereon fit into the recesses 6.
  • the probes 12 and 13, which are already disposed inside the body 5 of the antenna feed 1 and also project outward of it, are electrically and mechanically coupled to the electronic circuitry 14.
  • the electronic circuitries 14 may have convenient electrical and mechanical shielding on the outer side, while a convenient prior-art protective cover may be fixed in manners known in the art over the entire body of the antenna feed 1.
  • the antenna feed 1 according to the first embodiment may be seen in its assembled state.
  • the body 5 of the antenna feed 1 is covered on the rear side by a cover 9, which is screwed into the thread of the antenna feed body 5 and has an attachment connector 8 at the center of the cover.
  • the probes 12 and 13 are always disposed so as to be mutually perpendicular, as indicated in Figures 5 and 6 .
  • all the planes inside the mantle of the basic cylinder shape are preferably of equal length and comparatively shorter than in the first embodiment.
  • the purpose of such arrangement is in that the recesses 6 are only fashioned in the section in which the smaller-diameter waveguide 11 extends on the inside of the cylinder. That way, an antenna feed body 5 having a smaller diameter than in the first embodiment may be fashioned. It is however a consequence of the arrangement according to the second embodiment that the probe 12 must be routed along the antenna feed body 5 to the appropriate opening in the larger-diameter waveguide 10. The remaining structural characteristics are the same as in the first embodiment.
  • the antenna feed 1 is shaped basically as a rectangular prism. On the rear side thereof there is a cover 9 whereon an attachment connector 8 is fixed.
  • the dimensions of the sides of the waveguide with a rectangular cross-section are defined conveniently for operating within two frequency ranges of transmission and/or reception.
  • the dimensions of the inner sides of the rectangular cross-section take on the function performed by the different diameters of the circular waveguides in the first and second embodiments.
  • recesses 6 are fashioned in the outer walls of the antenna feed body 5 shaped as a rectangular prism.
  • the said recesses 6 are fashioned in such a way as to accommodate the electronic components of the electronic circuitry 14.
  • All the required electronic components of the transmitter and/or receiver are disposed on one side of the electronic circuitry 14 which is functionally coupled to some of the neighboring electronic circuitries.
  • the probe 12 is inserted through the first plane so as to protrude through the wider side into the waveguide.
  • the probe 13 is inserted through the second plane, which is perpendicular to the first plane, so as to protrude through the narrower side into the waveguide.
  • electronic circuitries 14 are laid and fixed to the said planes in such a way that the electronic components mounted thereon fit into the recesses 6.
  • the probes 12 and 13, which are already disposed inside the body 5 of the antenna feed 1 and also project outward of it, are electrically and mechanically coupled to the two electronic circuitries 14.
  • the remaining structural characteristics are the same as in the first embodiment.
  • the said recesses as integral spaces having the shape of a flat-bottomed basin, wherein the electronic circuitries are inserted in such a way as to fit with their rear side, i.e. with the substrate side where there are no electronic components, on the bottom of the said spaces, while facing the antenna feed body, to which they are fixed.
  • the substrates of the electronic section accordingly placed on the bottom of the spaces in the antenna feed body, may also be fixed to the antenna feed body by means of metal partitions separating the individual electronic components and/or groups of electronic components. Aptly disposed metal partitions set up boundaries between electronic components and/or electronic circuitries, thereby reducing the mutual effects of the electromagnetic emissions generated by the electronic components of the electronic circuitry.
  • the partitions are shaped as vertical walls having vertical through bores for fixing screws, by means of which fixing screws they are secured together with the electronic circuitries to the antenna feed body.
  • the height of the partition serving as a separator wall is smaller by the thickness of the substrate than the depth of the recess in the plane of the antenna body.
  • the probe is situated in the antenna feed body, projecting outward of it, and is electrically and mechanically coupled to the electronic circuitry.
  • the electronic circuitry especially if the electronic components are mounted so as to be extending into the recess, may have convenient electrical and mechanical shielding on the outer side, while a convenient prior-art protective cover may be fixed in manners known in the art over the entire body of the antenna feed.
  • the proposed microwave transmit/receive antenna feed for a microwave communication system is characterized in that it has at least two planes with a recess fashioned on the lateral side of the antenna feed body, into which recesses an electronic circuitry is placed and fixed in such a manner as to fit into the said recess.
  • the electronic circuitry has electronic components disposed only on one side.
  • the recesses are shaped so as to allow the electronic components of the electronic circuitry to sink either individually separated and/or in separate groups into single recesses, or, alternatively, they may be shaped as an integral space having the shape of a basin, wherein the electronic components or groups of electronic components are not physically separated.
  • the electronic circuitry is placed on and fixed to the edge of the recess of the plane, in a depression having a depth approximately equal to the thickness of the substrate of the electronic circuitry, or, alternatively, it may be placed with its substrate on the bottom of the recess and fixed thereto by means of metal partitions.
  • the probe is situated in the antenna feed body, projecting outward of it, and is electrically and mechanically coupled to the electronic circuitry.
  • the electronic circuitry may have convenient electrical and mechanical shielding on the outer side, while a convenient prior-art protective cover may be fixed in manners known in the art over the entire body of the antenna feed.
  • the number of planes with recesses corresponds to the number of required electronic circuitries.
  • the recesses have been described as being conveniently shaped so as to match the arrangement and the physical separation of the electronic components of the electronic circuitry. It is readily apparent that the recesses may also be fashioned differently within the scope of the invention, for example as a space of a rectangular or some other shape, wherein the electronic components or groups of electronic components are not physically separated but located within the same space of the recess.
  • the configuration according to the invention allows antenna feeds of exceptional compactness, reliability and simplicity to be manufactured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Waveguide Aerials (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP08724386A 2007-04-06 2008-03-19 Microwave transmit/receive antenna feed Active EP2132825B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI200830598T SI2132825T1 (sl) 2007-04-06 2008-03-19 Mikrovalovna oddajno sprejemna antenska glava
PL08724386T PL2132825T3 (pl) 2007-04-06 2008-03-19 Zasilanie mikrofalowej anteny nadawczej/odbiorczej
CY20121100377T CY1112803T1 (el) 2007-04-06 2012-04-23 Σηματοτροφοδοτης κεραιας μεταδοσης/ληψης μικροκυματων

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SI200700085A SI22517A (sl) 2007-04-06 2007-04-06 Mikrovalovna oddajno/sprejemna antenska glava
PCT/SI2008/000019 WO2008123836A1 (en) 2007-04-06 2008-03-19 Microwave transmit/receive antenna feed

Publications (2)

Publication Number Publication Date
EP2132825A1 EP2132825A1 (en) 2009-12-16
EP2132825B1 true EP2132825B1 (en) 2012-02-08

Family

ID=39563540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08724386A Active EP2132825B1 (en) 2007-04-06 2008-03-19 Microwave transmit/receive antenna feed

Country Status (10)

Country Link
EP (1) EP2132825B1 (pl)
AT (1) ATE545172T1 (pl)
CY (1) CY1112803T1 (pl)
DK (1) DK2132825T3 (pl)
ES (1) ES2382020T3 (pl)
HR (1) HRP20120374T1 (pl)
PL (1) PL2132825T3 (pl)
PT (1) PT2132825E (pl)
SI (2) SI22517A (pl)
WO (1) WO2008123836A1 (pl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9024835B2 (en) 2007-12-25 2015-05-05 Microelectronics Technology, Inc. Integral high frequency communication apparatus
EP2610960A1 (en) * 2011-12-28 2013-07-03 Microelectronics Technology Inc. Integral high frequency communication apparatus
US10096906B2 (en) 2016-03-02 2018-10-09 Viasat, Inc. Multi-band, dual-polarization reflector antenna
US10594042B2 (en) 2016-03-02 2020-03-17 Viasat, Inc. Dual-polarization rippled reflector antenna

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3210889B2 (ja) * 1997-01-14 2001-09-25 シャープ株式会社 直交２偏波導波管入力装置およびそれを用いた衛星放送受信用のコンバータ
US6111547A (en) * 1998-10-13 2000-08-29 Texas Instruments-Acer Incorporated Modularized multiple-feed electromagnetic signal receiving apparatus
GB0023269D0 (en) * 2000-09-22 2000-11-08 Invacom Ltd Improvements to data receiving apparatus
JP2004297486A (ja) * 2003-03-27 2004-10-21 Sharp Corp 低雑音ブロックダウンコンバータ用多層基板

Also Published As

Publication number Publication date
ES2382020T3 (es) 2012-06-04
CY1112803T1 (el) 2016-02-10
WO2008123836A1 (en) 2008-10-16
SI22517A (sl) 2008-10-31
ATE545172T1 (de) 2012-02-15
SI2132825T1 (sl) 2012-05-31
DK2132825T3 (da) 2012-05-21
HRP20120374T1 (hr) 2012-05-31
PL2132825T3 (pl) 2012-07-31
EP2132825A1 (en) 2009-12-16
PT2132825E (pt) 2012-05-18

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