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Electical tilt

Viewing 8 posts - 1 through 8 (of 8 total)
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  • #52267 Reply
    JJ
    Guest

    Hi every body
    I need to know the way of working of adjustable electrical tilt antenna

    thanks

    #52268 Reply
    pix
    Guest

    the signal is fed with different phases and different weights to each dipole in the antenna.

    #52269 Reply
    JJ
    Guest

    But what is the mecanism implemented inside the antenna ?

    JJ

    #52270 Reply
    pix
    Guest

    it totally depends on the antenna vendor. the basic idea is to implement independent phase shifters along the waveguides.
    sometimes, it will simply be a plastic device that will slow down the waves depending on how deep it goes into the wave guide. Oppositely, the phase shift will be removed if the device is put further away from the wave guide.

    Controlling those phase shifters is done thanks to a screw at the bottom of the antenna. (the electrical tilt is mechanically adjusted :)) )

    #52271 Reply
    BSS
    Guest

    dear
    what is the meaning of waveguide

    #52272 Reply
    pix
    Guest

    it’s a kind of cable that can conduct electromagnetic waves, instead of electrical current.

    jumper and feeders are waveguides, you know… they do not carry electric current, but EM waves 🙂

    #52273 Reply
    johan
    Guest

    hi pix

    we have huawei BTS 3012 which you can make electrical tilt by using software. what do think about this method usefull or we better use the manual way that by adjusting from antenna .

    #52274 Reply
    pix
    Guest

    johan,

    remote electrical tilt (RET) ? it is a remote mechanical adjustment of the electrical tilt… it is of course better than doing it manually, because you don’t have to go on site !!

    but otherwise, in terms of precision, the RET is very precise, possibly more than manual 🙂

Viewing 8 posts - 1 through 8 (of 8 total)
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