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WO2003034535A1 - Antenne integree pour bande radio par satellite, bande de television et bande radio fm - Google Patents

Antenne integree pour bande radio par satellite, bande de television et bande radio fm Download PDF

Info

Publication number
WO2003034535A1
WO2003034535A1 PCT/US2002/032743 US0232743W WO03034535A1 WO 2003034535 A1 WO2003034535 A1 WO 2003034535A1 US 0232743 W US0232743 W US 0232743W WO 03034535 A1 WO03034535 A1 WO 03034535A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
satellite radio
television
boom
radio
Prior art date
Application number
PCT/US2002/032743
Other languages
English (en)
Inventor
Neil D. Terk
Nicholas G. Paraskevopoulos
Original Assignee
Terk Technologies Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terk Technologies Corporation filed Critical Terk Technologies Corporation
Publication of WO2003034535A1 publication Critical patent/WO2003034535A1/fr

Links

Classifications

    • 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
    • H01Q19/28—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 a secondary device in the form of two or more substantially straight conductive elements
    • H01Q19/30—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 a secondary device in the form of two or more substantially straight conductive elements the primary active element being centre-fed and substantially straight, e.g. Yagi antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • 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
    • H01Q11/10—Logperiodic antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • 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

Definitions

  • the present invention generally relates to antennas, and more particular relates to a satellite radio antenna which is integrated with an antenna for receiving television and FM (frequency modulated) band signals.
  • Satellite radio or digital radio addresses this problem by broadcasting its signal, which may be received regardless of the listener's location, from multiple satellites.
  • Satellite radio has grown significantly in popularity and is for the most part associated with reception by automobile radio receivers.
  • satellite radio because of the unique programming and clear reception, due to digital signal transmission and reception, of satellite radio, there is believed to be a market and consumer demand for satellite radio by homeowners and apartment dwellers in their place of residence.
  • satellite radio Very often, such places of residence already have antennas in place for television band reception, including VHF (very high frequency) and UHF (ultra high frequency) bands, and FM (frequency modulated) radio band reception.
  • a satellite radio antenna is combined with a television band and FM radio band antenna which are mounted on a single mast attached to a dwelling place in a position for optimum reception of transmitted signals falling within the satellite radio band, television band and FM radio band.
  • the satellite radio antenna is a helical antenna located within a radome or housing.
  • the television/FM radio antenna is a log-periodic antenna having one or more "null-points", at which point the satellite radio antenna is mechanically and/or electrically connected.
  • the log-periodic antenna has a series of spaced apart reflector and radiator elements mounted on a central boom, which is supported by a mast securely attached to the dwelling place.
  • the satellite radio antenna may be electrically and mechanically connected at one of the "null-points" along the boom of the log-periodic antenna.
  • Figure 1 is a top view of a log-periodic antenna illustrating the various "null-points" where a satellite radio antenna may be connected thereto.
  • Figure 2 is a side view of an integral satellite radio/television/FM radio antenna formed in accordance with the present invention.
  • Figure 3 is an isometric view, in simplified form, of the satellite radio antenna portion which is electrically and/or mechanically coupled to the television/FM radio antenna to form the integrated antenna of the present invention.
  • Figure 4 is a partial isometric view of another form of the satellite radio antenna portion of the integral antenna formed in accordance with the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • the satellite digital audio radio system operates in a band of frequencies between 2320.5 and 2345 megahertz (MHz).
  • the television reception band (VHF/UHF) covers the frequencies between 470 MHz and 806 MHz for the UHF band, and 54 MHz and 216 MHz for the VHF band.
  • the FM radio band falls within the "VHF" television band between Channel 6 and Channel 7, and covers a frequency of about 88 MHz to 108MHz.
  • the antennas used for satellite radio reception require line-of-sight views to the "sky"-based satellites. This places restrictions on the placement of the satellite radio antenna.
  • the satellite radio antenna should be placed atop the television/FM radio antenna as shown in Figure 2 of the drawing. More specifically, Figure 2 shows an example of the position of the satellite radio antenna integrally built into a television and/or FM radio antenna.
  • the satellite radio antenna is preferably a ground-independent antenna, in that it is preferably either a helical design or a patch type.
  • the position of the satellite radio antenna is preferably at a location on the television/FM radio antenna that will minimize interference between the two. Specifically, these positions are "null-points", and are shown in Figure 1 of the drawing.
  • One "null-point” region includes locations that are naturally occurring combination points between the relatively low frequencies (VHF) and the relative high frequencies (UHF) of the television reception bands. Thus, higher frequency signals that are found in the satellite radio bands may be added at these particular "null-point” locations.
  • VHF relatively low frequencies
  • UHF relative high frequencies
  • connection to the satellite radio antenna can be made mechanically only or both mechanically and electrically.
  • a mechanical connection is one in which the satellite radio antenna is mechanically mounted to the boom which supports the various dipole elements (both radiators and reflectors) of the multi-element television/FM radio antenna, but where the satellite radio antenna does not interface directly with the multi-element antenna.
  • the satellite radio antenna output is through a separate electrical line, usually a coaxial cable, which would run into the house or dwelling place in parallel with the television/FM radio antenna coaxial cable.
  • the satellite radio antenna may be coupled to the television/FM radio antenna both mechanically and electrically. It may be not only securely mounted to the boom of the log-periodic television/FM radio antenna, but it also may be electrically connected thereto in at least one of two ways.
  • One way is through a filter system which is commonly known as a diplexer or triplexer.
  • the diplexer would combine the satellite radio signal and television/FM radio signal onto a single coaxial cable.
  • the triplexer would combine the
  • VHF, UHF, FM radio and satellite radio signals onto a single coaxial cable through a filtering circuit.
  • the satellite radio antenna may have a direct electrical connection to the actual multi-element television/FM radio antenna itself, and this should be done at the boom location.
  • the other of the two "null-point" regions where the satellite radio antenna may be coupled to the television/FM radio antenna would be at a location on the boom itself, with a connection being either mechanical only or both mechanical and electrical, as described above. It is important that the connection be at the boom itself because of the minimal amount of current that flows at this juncture. The minimal current flow results in minimal interaction between the satellite radio antenna and the television/FM radio antenna.
  • FIG 1 shows a top view of a log-periodic (multi-element) antenna 2, and the various "null-points" 4 where the satellite radio antenna 20 may be electrically and/or mechanically coupled thereto.
  • the log-periodic antenna 2 includes a VHF (very high frequency) portion 6 comprising elements 8 (i.e., reflectors and radiators) N, N-1, through 1, as shown in Figure 1 of the drawing.
  • the UHF (ultra high frequency) portion 10 of the multi-element antenna is shown with smaller, multiple elements 14 than those of the VHF portion 6 attached to the same boom 12 which supports the VHF elements 8.
  • the juncture between the two portions 6, 10 is referenced by the letter A.
  • the elements 14 of the UHF portion 10 of the antenna are labeled as M, M-1, through 1.
  • the elements of each of the VHF and UHF antenna portions are dipoles formed of spaced apart elements residing in one plane and traversing the boom 12 in a perpendicular direction to the longitudinal axis of the boom.
  • FIG 2 is a side view of an integrated satellite radio band/television and FM radio band antenna formed in accordance with the present invention.
  • the satellite radio band antenna portion 20 is shown in Figure 2 as being coupled at point A on the multi-element television/FM radio antenna 2, that is, at the juncture between the UHF and VHF portions 6, 10 of the multi-element antenna.
  • the satellite radio antenna 20 may be coupled at other "null-points" 4 along the boom 12 of the television/FM radio multi-element antenna 2.
  • the boom 12 is mounted to a mast 22 which is securely attached to the dwelling place.
  • a linkage 24 is connected between the boom 12 and mast 22 for additional stability and support.
  • FIG 3 shows, in a simplified form, one form of the satellite radio portion 20 formed in accordance with the present invention.
  • the satellite radio antenna is preferably a helical antenna 21 (more specifically, a quad helix) having one or more elements 26 helically wound on a supporting cylindrical core 28.
  • the helical antenna 21 preferably extends about three (3) inches in a direction that is normal to the plane in which the elements 8, 14 of the television/FM radio antenna reside. It receives "sky"-based satellite signals transmitted in the satellite digital audio radio system (SDARS).
  • SDARS satellite digital audio radio system
  • the helical antenna 21 mounted on a circuit board 30 which includes a low noise amplifier (LNA) 32 positioned at a "null-point" on the boom 12 of the multi-element television/FM radio antenna portion 2.
  • LNA low noise amplifier
  • the satellite radio portion of the integral antenna may include a patch-type antenna 34, rather than the helical antenna portion, to receive transmissions from the "sky"-based satellites in the SDARS.
  • a half wave or quarter wave patch antenna may be used, and is preferably electrically and/or mechanically coupled to the boom 12 at one of the "null-points".
  • the integrated antenna of the present invention provides both conventional television and FM radio reception and satellite radio reception in a single antenna mounted on a single mast.
  • the size of the satellite radio portion 20 of the antenna adds very little weight and wind resistance to the preferred log-periodic, multi-element television/FM radio antenna portion 2, and, if placed at specified "null-points" 4 along the boom 12 of the multi-element television/FM radio antenna, will not substantially interfere with the reception of the television and FM radio signals.
  • connection may be made using electrical components, such as a diplexer or triplexer, to provide each of the satellite radio, television and FM radio signals to the dwelling place on a single coaxial cable.
  • an integral satellite radio/television/FM radio antenna may be formed having a television/FM radio antenna portion in other than a log-periodic (multi-element) antenna form.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne une antenne intégrée recevant des signaux de télévision et de radio FM, ainsi que des signaux de radio par satellite. Ladite antenne comprend : une partie d'antenne à éléments multiples comprenant une perche (12) supportée par un mât (22) ; une pluralité d'éléments dipôle espacés et parallèles entre eux (2) supportés par ladite perche et s'étendant perpendiculairement à l'axe longitudinal de la perche ; et une partie d'antenne (20) hélicoïdale présentant un élément enroulé hélicoïdalement autour du noyau de support. Ladite partie d'antenne (20) enroulée hélicoïdalement reçoit des signaux radio par satellite, et la partie d'antenne (2) à éléments multiples reçoit des signaux de télévision et/ou des signaux de radio FM. Ladite partie d'antenne (20) radio par satellite est montée au niveau d'un des plusieurs « points nuls » (4) situés sur la partie d'antenne à éléments multiples où le passage de courant dans la partie d'antenne à éléments multiples est minimum.
PCT/US2002/032743 2001-10-15 2002-10-15 Antenne integree pour bande radio par satellite, bande de television et bande radio fm WO2003034535A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32930101P 2001-10-15 2001-10-15
US60/329,301 2001-10-15

Publications (1)

Publication Number Publication Date
WO2003034535A1 true WO2003034535A1 (fr) 2003-04-24

Family

ID=23284772

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/032743 WO2003034535A1 (fr) 2001-10-15 2002-10-15 Antenne integree pour bande radio par satellite, bande de television et bande radio fm

Country Status (1)

Country Link
WO (1) WO2003034535A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1492195A1 (fr) * 2003-06-27 2004-12-29 Delphi Technologies, Inc. Mât intégré d'une antenne am/fm avec une seule antenne sdars

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021815A (en) * 1976-03-22 1977-05-03 Bogner Richard D Circularly polarized transmitting antenna employing end-fire elements
US4977408A (en) * 1989-06-28 1990-12-11 General Electric Company Deployable antenna bay
US6057805A (en) * 1996-08-19 2000-05-02 Emc Test Systems, L.P. Broad band shaped element antenna
US6329955B1 (en) * 1998-10-26 2001-12-11 Tdk Rf Solutions Inc. Broadband antenna incorporating both electric and magnetic dipole radiators

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021815A (en) * 1976-03-22 1977-05-03 Bogner Richard D Circularly polarized transmitting antenna employing end-fire elements
US4977408A (en) * 1989-06-28 1990-12-11 General Electric Company Deployable antenna bay
US6057805A (en) * 1996-08-19 2000-05-02 Emc Test Systems, L.P. Broad band shaped element antenna
US6329955B1 (en) * 1998-10-26 2001-12-11 Tdk Rf Solutions Inc. Broadband antenna incorporating both electric and magnetic dipole radiators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1492195A1 (fr) * 2003-06-27 2004-12-29 Delphi Technologies, Inc. Mât intégré d'une antenne am/fm avec une seule antenne sdars

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