"COMPACtenna" - fact or fiction?

Discussion in 'VHF/UHF - 50Mhz and Beyond' started by KK6QMS, May 27, 2017.

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  1. K1ZH

    K1ZH Ham Member QRZ Page


    Hmm, I think there might be something to this thing. Looking down at it from the top side of the antenna, it appears to be a form of small transmitting loop antenna with multiple loops. Looking at it from the side of the antenna, it appears to be a short vertical.
     
  2. K8SWD

    K8SWD Ham Member QRZ Page

    3B19C3FC-394A-49A0-BCD5-EC7C43F8F7FC.jpeg 3B19C3FC-394A-49A0-BCD5-EC7C43F8F7FC.jpeg i put my 2/440 version through our courthouse security scanner. It is in a white plastic bowl. Not the greatest image. Not much guts to the antenna either but it work ok for its small size. On my car roof , center left side, it works as good and sometimes better than a Comet SBB5 that is trunk mounted
     
  3. N0TZU

    N0TZU Platinum Subscriber Platinum Subscriber QRZ Page

    I forgot all about this thread until it was revived with another post today. Here is a link to the paper referenced in the article on metamaterial antennas you referred to above.
    http://www2.engr.arizona.edu/~ziolk...ski_Peng_Z_antenna_measurements_AWPL_2009.pdf Notably their antenna has 30 dB better power output than a monopole of the same vertical size.

    The metamaterials field is fascinating, basically controlling EM waves with numerous sub-wavelength structures to diffract the waves in desirable ways. That's very different than the Compactenna which is basically a variation of a spiral antenna per this patent https://patents.google.com/patent/US9407001
     
    Last edited: Dec 23, 2019
  4. WX1FLY

    WX1FLY Platinum Subscriber Platinum Subscriber QRZ Page

    I finally had to change it out. I got tired of people flagging me down telling me I left something on my car!
     
  5. KC1DR

    KC1DR Subscriber QRZ Page

    I'll agree with that.
     
  6. KF5FEI

    KF5FEI Ham Member QRZ Page

    Wonder if this is similar to the beer can antennas popular with the 11m crowd? I see way more pick-em-up trucks with beer can antennas, and fewer Firestiks and whatnot nowadays.
     
  7. KC1DR

    KC1DR Subscriber QRZ Page

    I will volunteer to supply the materials, if someone wants to build one!
     
  8. KC1DR

    KC1DR Subscriber QRZ Page

    Mine works good.
     

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