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Antenna-Clothing Outperforms Regular Antennas

Zothecula writes with a snippet from Gizmag: "In the recent past, we've seen outfits that incorporate bio-sensors and batteries, and even a bikini with integrated solar cells. One of the latest innovations in smart fabrics, however, allows a person's clothing to act as multiple antennas. Developed at Ohio State University, the system could prove particularly useful to soldiers, who don't want to be encumbered by a protruding whip antenna."

45 of 70 comments (clear)

  1. Dare ya by Dunbal · · Score: 4, Insightful

    I dare you to try to board an airplane while wearing one.

    --
    Seven puppies were harmed during the making of this post.
    1. Re:Dare ya by DigiShaman · · Score: 1

      Chainmail. It's back in vogue. Didn't you know? TSA is clueless, so don't ever expect them to know anything anyhow.

      --
      Life is not for the lazy.
    2. Re:Dare ya by Baloroth · · Score: 1

      I dare you to try to board an airplane.

      --
      "None can love freedom heartily, but good men; the rest love not freedom, but license." --John Milton
    3. Re:Dare ya by Opportunist · · Score: 1

      Not 'til they removed the terrorism at the gates.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  2. Clarification by Anonymous Coward · · Score: 2, Interesting

    When the summary refers to a whip antenna, it means a ducky antenna on a handheld radio, as worn on a belt like police tend to do, not the large old style military whip/backpack thing I pictured first, nor do they compare it to a handheld radio held at face level (used without shoulder mic). So, although it makes an improvement over usual law enforcement radio, its not an astonishing discovery by any means, as similar gains can be made by holding the handheld in a usual talking position.

    For those with IEEE access:
    http://ieeexplore.ieee.org.proxy.lib.clemson.edu/search/srchabstract.jsp?tp=&arnumber=5783293

    1. Re:Clarification by Gordonjcp · · Score: 1

      Stubby helical aerials on radios work pretty badly, and they just plain don't work at all when you've got a stubby on a handheld that's clipped to your belt.

      I wonder how poor performance will be when the aerial is pressed up against a big wet conductive thing?

    2. Re:Clarification by NouberNou · · Score: 2, Informative

      Actually no, they still use VHF whip antennas quite often in the US military. The SINCGARS frequency hopping system is in the 30 to 87.975MHz range and the ideal antenna length for this range is in the 1 to 2 meter area. Luckily these whips can be folded down and do not actually take up much space when traveling, but of course that inhibits their gain quite a bit.

      Even the UHF band that most military coms occurs on has a roughly 13" ideal antenna length. SATURN and HAVE QUICK I/II are in the UHF band only up to 512Mhz.

    3. Re:Clarification by Lumpy · · Score: 1

      5 meter and 6 meter communications is still very common in military. It's a band that is highly effective for longer range ground communication without the use of satellites or repeaters.

      --
      Do not look at laser with remaining good eye.
    4. Re:Clarification by Grieviant · · Score: 1

      Not only that, but it looks like what they're really doing is comparing 4-fold diversity at the receiver to a single conventional receive antenna. That's not a balanced comparison from the communications standpoint. Obviously it could make multiple receive antennas at low RF frequencies more practical though.

  3. Do they make them in shorts? by GoodNewsJimDotCom · · Score: 1

    Reinventing the cantenna.

  4. A bikini with integrated solar cells? by Anne_Nonymous · · Score: 1

    That has the potential to be shocking.

    1. Re:A bikini with integrated solar cells? by Gaygirlie · · Score: 1

      Just wait for the sunglasses, they'll be eye-popping.

    2. Re:A bikini with integrated solar cells? by Opportunist · · Score: 1

      Yeah, but that G-String is a pain in the ass.

      Next time they should buy them at some clothing shop and not the music store.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  5. Solar Powered Boob-Cooler... by MindPrison · · Score: 1

    ...now THERE's a novel idea!

    Remember the Solar Powered Propeller hat?

    Picture this:

    Two boo...err...one bikini, solar powered of course, with two propellers...

    Nuff said!

    --
    What this world is coming to - is for you and me to decide.
  6. Joke by Anonymous Coward · · Score: 2, Funny

    Two antennae met on a roof, fell in love and decided to get married.
    The ceremony wasn't much but the reception was excellent!

  7. How can it possibly perform well? by Beryllium+Sphere(tm) · · Score: 3, Interesting

    Putting a bag of salt water in the near field of an antenna would be expected to increase losses and detune it.

    1. Re:How can it possibly perform well? by Mr_Perl · · Score: 1

      Actually salt water can provide a far better return path for rf energy than air, so depending on the frequency (I'm assuming super high) of the signal, it could be pretty good.

      Not sure how I'd feel about my ugly bag of mostly water being a return path for high frequency radio though.

      --

      My poetry site welcomes the unusual.
    2. Re:How can it possibly perform well? by X0563511 · · Score: 2

      They quite simply do not have the energy to knock electrons loose, which is exactly what is required to cause the problems you mention. You realize infrared and visual light have more energy than radio?

      The only thing they can do is be absorbed and converted to thermal energy... and to reach a hazardous level you'd needs quite a few watts of power, and the only thing you'll get for it is a skin-deep burn no different than any other burn.

      --
      For large sets, this will be our guide even unto death, for the LORD will work for each type of data it is applied to...
    3. Re:How can it possibly perform well? by Anonymous Coward · · Score: 2, Funny

      You can say whatever you want, point me to any study about radiation caused by phones, TVs etc, they're not harmless, just because they don't cause cancer in the next few months, that doesn't mean their emissions don't damage your DNA and cause other problems later, for your or your children you might have after. So, no, wrapping yourself in a antenna does not seem such a good idea.

      So, you don't care about the science, you're just sure it causes damage to your dna. Gotcha.

      Next topic... Magnets! How do they work?!

  8. Re:Expensive Fatigues by Cwix · · Score: 2

    Sounds about right in the price department.

    Anyways enlisted men/women only have to pay for their own gear if they loose what they were issued.

    --
    You are entitled to your own opinions, not your own facts.
  9. as Marconi once said... by Anonymous Coward · · Score: 1

    "That RF is funny stuff."

  10. "The Ohio State University" by Registered+Coward+v2 · · Score: 1

    At least use the correct name.

    --
    I'm a consultant - I convert gibberish into cash-flow.
  11. Re:Safety? by Osgeld · · Score: 2

    no one respectable has said that for decades

  12. Re:No reception? by Nemyst · · Score: 1

    It only comes in turtleneck versions.

  13. Re:Safety? by Opportunist · · Score: 1

    Well, with any luck the soldiers will die from lead poisoning before the cancer could set in. Let's hope for the best...

    Sorry, I sometimes get overridden by my past life as an arms contractor.

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  14. Re:Safety? by mr100percent · · Score: 1

    "Provoke cancer?" Your sources?

  15. Re:Safety? by WidgetGuy · · Score: 1

    This news just in... A tragedy today at Fort Bragg where an entire platoon was wiped out by a single lightening bolt. One witness commented, sobbing, "It just fried 'em in mid-step!"

    --
    One "Aw, Shit!" is worth 100 "Ata boys!"
  16. Re:Recieving or transmitting? by X0563511 · · Score: 2

    You do know there's a large difference between ionizing and non-ionizing radiation right? This stuff is on the wrong side of the spectrum to be causing you such problems.

    The absolute worst you might get is some heat from absorption.

    --
    For large sets, this will be our guide even unto death, for the LORD will work for each type of data it is applied to...
  17. Re:31 WTO scientists in may 2011... not that long by X0563511 · · Score: 1

    I think you've failed to take duty cycle into account. Such a radio wouldn't be active nearly as often as a typical cellphone (there's no tower to check into every couple of seconds etc)

    --
    For large sets, this will be our guide even unto death, for the LORD will work for each type of data it is applied to...
  18. Re:31 WTO scientists in may 2011... not that long by leighklotz · · Score: 2

    It is hardly 4 months since a panel of 31 scientist came to the conclusion that cell phone radiation increases the risk for cancer:
    http://www.cbloomnews.com/TopNews.aspx?Article_id=85332&Cat=5
    http://www.cnn.com/2011/HEALTH/05/31/who.cell.phones/index.html
    http://www.pcworld.com/businesscenter/article/229054/cell_phones_may_cause_cancer_says_the_who_what_to_do.html

    What news are you reading to say "no one respectable has said that for decades"???

    They put RF in the same risk category as coffee. They didn't do any of their own research, just reviewed existing research.
    You can review the same existing research here and come to your own conclusions, just like they did:
    http://www.cancer.gov/cancertopics/factsheet/Risk/cellphones

  19. Zap them with EMPs by countertrolling · · Score: 1

    Until they're just pink in the middle..

    --
    For justice, we must go to Don Corleone
  20. The most interesting part of this story by Hell+O'World · · Score: 2

    * Googles "bikini with integrated solar cells" *

    1. Re:The most interesting part of this story by Luyseyal · · Score: 1

      Looking at those things brings all kinds of weirdness to mind... "Can I jack in to your bikini to charge my iPod?"

      -l

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  21. Re:Recieving or transmitting? by X0563511 · · Score: 2

    yea. The ultraviolet component. You know what ultraviolet is right? It's the electromagnetic band adjacent to the visible light band - specifically the higher frequency edge. Which just happens to be the lower limit for being harmful it seems!

    Meaning, again, that radio waves are on the wrong side of the spectrum.

    --
    For large sets, this will be our guide even unto death, for the LORD will work for each type of data it is applied to...
  22. really, antenna's work better with human contact? by Nyder · · Score: 2

    I think anyone who's had a TV that used rabbit ears and you had a channel or 2 that always seem to come in better when your touching the antenna's won't be surprised that clothes with antenna's built in would work better then normal antenna's.

    --
    Be seeing you...
  23. It has more antennas by subreality · · Score: 2

    It performs better because it has a whole bunch of antennas all over their body and can select the one that has the best performance at any given moment. Being able to choose one in the best spot is sometimes better than having a single efficient antenna. Of course, strapping 50 whip antennas to yourself would perform better than either a single whip or the antennasuit alone. Just don't try to move through bushes or interact with humans.

  24. Since you're all "wondering": by arielCo · · Score: 1

    Bikini with solar cells

    9 weirdest ways to harness solar power: features a full-body swimsuit, a bra and a skimpy dress.

    --
    This post contains no rudeness or derision of any kind. All arguments are friendly. Terms and exclusions may apply.
  25. There is something weird..... by WindBourne · · Score: 2

    about having clothing designed with the idea that it is for our troops, but being done by Chinese. I mean how many Americans are over in China designing military equipment and will bring it back here? None.

    --
    I prefer the "u" in honour as it seems to be missing these days.
  26. Re:Recieving or transmitting? by scheme · · Score: 1

    You do know there's a large difference between ionizing and non-ionizing radiation right? This stuff is on the wrong side of the spectrum to be causing you such problems.

    The absolute worst you might get is some heat from absorption.

    You know that just because the radiation doesn't cause damage to the DNA doesn't mean that it won't negatively influence cell growth and division right? Magnetic fields have been shown to influence cell division and growth rates and although the current studies used relatively high magnetic fields, smaller fields or other EM radiation may also have effects on cell growth and health.

    --
    "When you sit with a nice girl for two hours, it seems like two minutes. When you sit on a hot stove for two minutes, it
  27. The Ohio State University by Computerguy5 · · Score: 1

    Correction: that's The Ohio State University to you.

  28. What about the durability? by rice_crust · · Score: 1

    Soldiers in the field do a lot of harsh and demanding things to their equipment, like crawling through swamps, and jumping out of airplanes, so will this tech be strong enough to endure such conditions?

  29. Re:really, antenna's work better with human contac by xded · · Score: 1

    It's just a matter of tuning... If you happen to have a channel that is received better when you're close or touching the antenna, try shortening a bit the dipole and then move away. Shortening the antenna makes it slightly capacitive, almost the same effect your body has on it.

  30. Re:Recieving or transmitting? by X0563511 · · Score: 1

    My point here is that simple sunlight or heat from... say your household heater is more energetic than a typical handheld radio? You don't seem to grasp the fact that light (including radiated heat) and radio is the same damn thing, except the radio is less energetic!

    --
    For large sets, this will be our guide even unto death, for the LORD will work for each type of data it is applied to...
  31. Re:really, antenna's work better with human contac by pnewhook · · Score: 1

    That would be 'no child left behind' or alternatively, 'pass 'em even if they're stupid'.

    --
    Tesla was a genius. Edison however was a overrated hack who liked to torture puppies.