Dipole Antenna for 2 4 ghz Wifi

Dipole antennas are simple to construct and can be used in many applications. In this video I will show you how to construct a dipole antenna for the 2.4GHz …

DIY Scanner Antenna Made From Arrows

Scanner Antenna from bent arrows… this 1/4 wave antenna does a decent job, almost pulled in NOAA sat’s imagery… mainly designed for 2 meters, aircraft, f…
Video Rating: 5 / 5

32 replies
  1. wushurichardlife
    wushurichardlife says:

    very cool bro – i don’t know how you come up with this stuff a very
    creative genius and again like i always say – an encyclopeida of knowledge
    – yes you bro haha – how do you know this stuff???? were you in the
    military or what bro or am i just dumber than most people if everyone’s
    doing this stuff – damn you’ve got patience too haha – but why do this
    stuff haha – cool vids though (this kinds – gizmos etc)

    Reply
  2. ther00kie16
    ther00kie16 says:

    These videos are very helpful. However, I can’t help noticing your
    wavelengths deviate from theory. For example, 2.4ghz would be 125mm for a
    whole wave, as opposed to the 100mm your diagram implies. Same goes for
    your 5ghz video. What accounts for the discrepancy? Also, would it be
    possible to design such an antenna with ~1cm gap such that it operates at
    both frequencies simultaneously as wiki claims gaps of <λ/10 are negligible?

    Reply
  3. franparis71
    franparis71 says:

    Hello,
    Good job and good video !!!! thanks..
    Would you be able to do the same dipole antenna for a frequency of 1.2 Ghz ?
    And of course the video to explane how to do !!! 🙂
    Greetings
    Fran

    Reply
  4. Ryuuken24
    Ryuuken24 says:

    Just made a similar antenna for my quadcopter that runs on the 2.4G band.
    The antenna that came with it was 27mm, I cut it down to 25mm, I don’t know
    why but, I got way more interference because of Wifi signals around here.
    Also, there is a Celltower 500 meters, does that cause interference? I
    swear, every time I’m 15 meters up in the air, and I seem to lose control
    of whatever I’m flying.

    Reply
  5. Jerry Augustine
    Jerry Augustine says:

    nice tutorial can you dimensions for 1.2 and 5.8 frequencies thanks.
    these would come in handy for the fpv fans.

    Reply
  6. Sotos Alex
    Sotos Alex says:

    Very thorough video!
    I have a question though: What about really long antennas (like TP-LINK
    ANT2415) that house lots of this half wavelength dipoles? Do the
    manufacturers just repeat the same thing over and over again? Or is it
    something else? Please, shade some light on this issue!

    Reply
  7. shadowless
    shadowless says:

    Well done, Mr.McNeil

    I loved your Chromecast video (what brought me to your channel), and like
    this one too.

    The public needs more antenna design/implementation info.
    Subscribed already :-)

    Reply
  8. bjornahh87
    bjornahh87 says:

    is it possible to use this method to make a gsm antenna ?? and how
    long/short should the antenna be at fex: 1800mhz or 2100mhz ??

    Reply
  9. Naira Alam
    Naira Alam says:

    Absolutely wonderful videos, especially because of their simplicity.
    However, could you kindly explain the reason for the 60 mm and 70 mm
    lengths? I am trying to construct a similar antenna for 2100 MHz (for my
    mobile GSM Broadband modem).

    Reply
  10. Paul Jones
    Paul Jones says:

    Basic breakdown of length of the parts::
    ———–UUUU——[______]~~~~~~<<<<] [- 1 2 3 4 5 6 7 1 = 52.4 / 53mm 2 = 52.4 mm note: coil is both length and litz protection. 3 = 31mm 4 = 22mm note; mine is lead coated brass, stops rf reception at location 5 = who cares, this is the RF input 6 = ground plane, 3* diameter of 4, length not important 7 = SMA connector Does anyone know why 1 and 2 are the same length? Why the specific length?

    Reply
  11. Shawn Perry
    Shawn Perry says:

    Very nice informative video. I am very interested in you doing some white
    board videos with the fundamentals. This is a topic that I feel could
    benefit me greatly, as I install satellite systems for video and internet.
    Great to have an easy DIY solution to resolve wifi coverage issues.

    Reply
  12. Mats Rdr
    Mats Rdr says:

    Nice video, as always.
    And if You ever find the time to make some tutorial on the basics that
    would be great :O)

    Reply
  13. Miguel Adrenaline
    Miguel Adrenaline says:

    WHY IS 1/4 Wavelenght of 2.4GHz equal to 25mmmm ??? … shopuldn’t it be a
    quarter wavelenght of the WiFi band (I’ll consider 2.4GHz) the value
    bellow of 31,25 mm ?

    Sorry my ignorance in antenas.. the wavelenght is C/f <=>
    300000000/2400000000 = 125mm for a full wave therefore a quarter sould be
    125/4 = 31,25 mm

    GREAT TUTORIAL BY THE WAY. CONGRATS!!!

    Reply
  14. Matthew Barnard
    Matthew Barnard says:

    Useful video. Is the ground plane really necessary? Some antennas I have
    don’t appear to have that big thick black pigtail like yours.

    Reply
  15. Dhruv Jani
    Dhruv Jani says:

    Hi, I am a web Developer and dont know a damn thing about antennas …
    though I have a wifi router and which has a very short range … I would
    like to extend that range … and if I can guess right I can make this type
    of Antenna and put it in place of current one and it should increase the
    range for my WIFI … or does it work differently ???
    Thanks …

    Reply
  16. j bush
    j bush says:

    Can you point me to an equation to calculate the antenna lengths? I am
    interested in instruction on antenna theory – short course. Really
    appreciate your videos!

    Reply

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