UHF/VHF ALL CHANNEL TV RECEIVING ANTENNA

UHF/VHF ALL CHANNEL TV RECEIVING ANTENNA

  • CN 2,043,009 U
  • Filed: 08/16/1988
  • Issued: 08/16/1989
  • Est. Priority Date: 08/16/1988
  • Status: Active Grant
First Claim
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1. , a kind of UHF/VHF full channel tv receiving antenna.By n the V-arrangement oscillator is formed with these oscillators of installation and to two parallel metal pipes of these oscillator feeds.It is characterized in that:

  • N gets more than or equal to 6,Be installed in oscillator arms (1) on the metal tube (8), (2) ... (n) be positioned at same horizontal plane with pipe (8), respectively be installed in oscillator arms (1 '"'"') on the metal tube (8 '"'"'), (2 '"'"') ... (n '"'"') equal in length, installation situation is identical.Wherein odd number oscillator arms (1), (3) ... be positioned at a side of pipe (8), even number oscillator arms (2), (4) ... be positioned at the opposite side of pipe (8),(n-1) that be contained in the front forms logarithm periodic antenna to the short V-arrangement oscillator of length, and it carries out work at 6 to 12 channels with the pattern of half-wavelength, mainly presses the pattern work of 1.5 wavelength at 13 to 56 channels.Its characteristic parameter is;

    the length of adjacent vibration generators arm is than τ

    =L M/ L M+1, (M=1,2 ..., (n-2)), τ

    gets 0.86~

    0.92;

    Oscillator arms (1), (2) ... (n-1) the mounting distance factor sigma may=d on metal tube (8) M/ 4L M+1, σ

    gets 0.05~

    0.07, here d MRepresenting length is L MWith length be L M+1(M=1,2 ..., (n-2)) the mounting distance of two adjacent oscillator arms on metal tube (8);

    The angle Ψ

    of each oscillator arms and metal tube (8) or (8 '"'"'), Ψ

    get 45 °



    60 °

    , oscillator arms (1), (2) ... (n-1) length l 1, l 2... l N-1, as long as determine one of them, other just can be calculated by the τ

    value, modern l N-1Get 45~

    50cm, be contained in last n to the V-arrangement oscillator, the length l of its oscillator arms nGet 95~

    135cm, preferred values is 115cm.

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