Number of antenna in iPad 4th Generation

Question

Hi, can someone indicate me the number of wifi antennas embedded in Wi‑Fi + Cellular iPad with Retina Display (4th Gen) ?  And also specify the power gain of each antenna, and the combinations of all antennas ? Thanks.I have searched this forum without success (as well as Apple.com web site).
PimsV
http://compnetworking.about.com/od/homenetworkhardware/a/introduction-to-wifi-wi reless-antennas.htm
http://www.apple.com/ipad/features/

Answer 1

Thanks to one of Apple France Enterprise - Pre-Sales Engineer, here are the answers to my Wi-Fi questions on iPad 4: (use http://www.apple.com/ipad/business/it-center/)
http://images.apple.com/ipad/business/docs/iOS_6_Wifi_Sep12.pdf
For Gain, consult the FCC web site: http://www.fcc.gov/ ID BCGA1458 and BCGA1459 and FCC ID BCGA1460
iPad 4 (4th Generation) FCC ID BCGA1458 and BCGA1459 and FCC ID BCGA1460
802.11 a/b/g/n 2.4GHz and 5 GHz bands
40 MHz bonded channels support on 5 GHz Band
Short guard interval support
1x1:1 MIMO
MCS Index 7 (150 Mbps)
Antenna Gain:
2.400 - 2.480 GHz = -0.26 dBi
5.150 - 5.250 GHz = 4.63 dBi
5.250 - 5.350 GHz = 4.25 dBi
5.470 - 5.725 GHz = 4.51 dBi
5.725 - 5.850 GHz = 4.90 dBi
Details of the ISM Band
Average Power (802.11g)
2412 MHz: 15.97 dBm
2437 MHz: 16.45 dBm
2462 MHz: 15.46 dBm
Average Power (802.11n)
2412 MHz: 15.48 dBm
2437 MHz: 16.45 dBm
2462 MHz: 14.95 dBm
Average Power(802.11a)
5745 MHz = 18.43 dBm
5785 MHz = 18.43 dBm
5825 MHz = 18.47 dBm
Average Power (802.11n 5 GHz)
5745 MHz = 18.46 dBm
5785 MHz = 18.45 dBm
5825 MHz = 18.48 dBm
Average Power (802.11n 5GHz Wide Channels)
5755 MHz = 18.43 dBm
5795 MHz = 18.45 dBm
Details of the U-NII Bands
5.2 GHz (U-NII Low or U-NII-1)
Output Power (802.11a)
5180 MHz = 13.98 dBm
5200 MHz = 13.98 dBm
5240 MHz = 13.98 dBm
Output  Power (802.11n)
5180 MHz = 13.99 dBm
5200 MHz = 14.00 dBm
5240 MHz = 13.99 dBm
Average Power (802.11n Wide Channels)
5190 MHz = 12.00 dBm
5230 MHz = 15.50 dBm
5.3 GHz (U-NII Mid or U-NII-2)
Output  Power (802.11a)
5260 MHz = 17.50 dBm
5300 MHz = 17.50 dBm
5320 MHz = 16.00 dBm
Output  Power (802.11n)
5260 MHz = 17.50 dBm
5300 MHz = 17.50 dBm
5320 MHz = 16.00 dBm
Average Power (802.11n Wide Channels)
5270 MHz = 17.50 dBm
5310 MHz = 14.00 dBm
5.6 GHz (U-NII Mid Worldwide or U-NII-2E)
Output  Power (802.11a)
5500 MHz = 15.49 dBm
5580 MHz = 17.98 dBm
5700 MHz = 15.00 dBm
Output  Power (802.11n)
5500 MHz = 14.92 dBm
5580 MHz = 18.00 dBm
5700 MHz = 15.00 dBm
Average Power (802.11n Wide Channels)
5510MHz = 13.00 dBm
5550 MHz = 18.00 dBm
5670 MHz = 16.00 dBm