iPad's got 2 WiFi antennas and iPad 3G is larger

Discussion in 'iPad' started by ThatsMeRight, Mar 13, 2010.

  1. ThatsMeRight macrumors 68020

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    Sep 12, 2009
    #1
    Both iPad models (WiFi only and WiFi + 3G) have two WiFi antennas! Thanks to our friends over at the FCC we now know the iPad has got two WiFi antennas.

    It's not like the iPad will use both antennas at the same time: the iPad will just choose the one with the best reception. Another nice thing about this is that if one fails, you will still have a WiFi connection.

    Also, the iPad 3G is 0,3 milimetre higher and 0,1 milimetre wider than the WiFi-only model. The extra space is assumably needed because of the GPS chip and the 3G chip. The digital compass is included in both the WiFi-only and WiFi+3G models. It can also just be the plastic sticking out.
     
  2. aaquib macrumors 65816

    aaquib

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    Sep 11, 2007
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    Toronto, Canada
    #2
    Does this mean that browsing on the iPad will be more like my Mac and less like my iPhone (in terms of speed)?
     
  3. ThatsMeRight thread starter macrumors 68020

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    #3
    Well. The iPad will check how the reception is, and it chooses the best chip with the best reception. This means you will have a better, steady connection. These WiFi chips also supports 802.11n which is kinda the fastest WiFi speed (your router should also support 802.11n). And yes, it's definetly faster than your iPhone (since the iPhone doesn't support 802.11n).
     
  4. skunk macrumors G4

    skunk

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    #4
    Hard to believe. Do you know how small 0.1mm is? It's probably nothing more than the plastic top moulding being infinitessimally larger than the alumin(i)um version.
     
  5. ThatsMeRight thread starter macrumors 68020

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    #5
    It's just what the FCC reports say.
     
  6. skunk macrumors G4

    skunk

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    #6
    Maybe (I have not read it) but it makes no sense. The plastic would have to be fractionally thicker than the aluminium, for strength alone, so any potential microscopic gain would be lost anyway.
     
  7. bossxii macrumors 68000

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    Nov 9, 2008
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    Kansas City
    #7
    It has two antenna because it is in fact "N" wifi, which uses more than one at a time.

    See this article for comparison of N to A, B and G.

    "802.11n

    The newest IEEE standard in the Wi-Fi category is 802.11n. It was designed to improve on 802.11g in the amount of bandwidth supported by utilizing multiple wireless signals and antennas (called MIMO technology) instead of one."
     
  8. mrklaw macrumors 65816

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    Jan 29, 2008
    #8
    does it support 5GHz 'n'? I have my TC set to 5GHz n for my MBP, and my ADSL modem is set to 2.4GHz 'g' for other devices.

    if iPad doesn't support 5GHz I'd have to drop down to 'g'.
     
  9. bidwalj macrumors 6502a

    Joined:
    Feb 16, 2007
    #9
    hopefully this means the ipad wifi will stay connected during sleep. on both my iphone and ipod touch, wifi disconnects when the screen is on standby. on the iphone, data still filters through since its connected to 3g, but the ipod touch does not get any new data until the screen is turned on.

    this effects chat apps on the touch greatly since no im's come through until you turn the screen back on and it connects to the wifi network.
     
  10. BruiserBear macrumors 6502a

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    Jul 24, 2008
    #10
    The iPod will fetch your email based on the intervals you set.
     
  11. jedivulcan macrumors 6502

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    May 15, 2007
    #11
    I think some apps, like the iTunes remote application, will let the wifi connection stay connected as long as the iPod/iPhone is in range and you're connected.

    It'd be interesting to see how the 3g radio responds to power-saving when the device's screen is off.
     
  12. goobot macrumors 603

    goobot

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    long island NY
    #12
    im pretty sure its just the black radio sticking out a little.
     
  13. MythicFrost macrumors 68040

    MythicFrost

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    Australia
    #13
    IIRC the 5GHz mode is 802.11n, so yes it should.
     
  14. esserdk macrumors member

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    Mar 15, 2009
    #14
    5GHz connection is an entirely diffrent standard from 802.11n.
    It is called 802.11a. I still would have to assume that this standard is supported though. Anything else would be plain stupid.
     
  15. brentsg macrumors 68040

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    #15
    I would suggest that you brush up on your 802.11n specs.
     
  16. gr8tfly macrumors 603

    gr8tfly

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    #16
    Both 802.11a and 802.11n can use the 5GHz band (and the iPad supports it, based on the FCC test docs).
     
  17. MrAgileBeast macrumors regular

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    Mar 2, 2010
    #17
    im lost :|

    802...????ABCDEFGHIJK!!!

    can someone dumb it down just for me :)
    im very interested in maximizing my iPad Speed
     
  18. gibbz macrumors 68030

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    May 31, 2007
    #18
    Here is a good description.
     
  19. melman101 macrumors 68030

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    Sep 3, 2009
    #19
    The 5GHz band is the reason why I bought a simultaneous dual-band Airport Extreme from Apple. I knew that my Macs could support 802.11n 5GHz so since the 2.4ghz in my building is clogged with wifi networks, I decided to go this route. And boy, it's a dream. I can't wait to connect my iPad to this network.

    Alas, I'll be waiting for the 3G iPad anyhow though.
     
  20. barefeats macrumors 65816

    barefeats

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    Jul 6, 2000
    #20
    4G for iPad

    My plan is to use the Sprint 4G Overdrive palm sized WiFi router with the WiFi only iPad. When I tested it with the MacBook Pro, the download speed was 3 times faster than 3G. Ditto for the Google Nexus One and Verizon Droid phones. However, for some reason, the iPhone 3GS downloads were slower than 3G when used with the Overdrive.

    So my hope is that the iPad performs like the MacBook Pro rather than the iPhone when used with the Overdrive.

    Assuming it works well, since we are a two iPad family, the per unit cost per month for the unlimited 4G connection will be the same as the AT&T 3G. The only downside will be the requirement for a contract.
     

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