| item |
description |
| product name |
k21 |
| major chipset |
rtl8273bu |
| host interface |
usb2.0 |
| standard |
wifi: eee 802.11b, ieee 802.11g,
ieee 802.11n
b t: v2.1+edr/bt v3.0/bt v3.0+hs/bt v4.0
|
| frequency range |
2.4ghz~2.4835ghz |
| modulation type |
802.11b: cck, dqpsk, dbpsk
802.11g: 64 qam, 16 qam, qpsk, bpsk
802.11n: 64 qam, 16 qam, qpsk, bpsk
b t: 8dpsk, π/4 dqpsk, gfsk
|
| working mode |
infrastructure, ad-hoc |
| data transfer rate |
wifi：802.11b: 11, 5.5, 2, 1 mbps
802.11g: 54, 48, 36, 24, 18, 12, 9, 6 mbps
802.11n: mcs 0 to 7 for ht20mhz ;
mcs 0 to 7 for ht40mhz
b t: 1 mbps for basic rate
2,3mbps for enhanced data rate
|
| spread spectrum |
ieee 802.11b: dsss (direct sequence spread spectrum)
ieee 802.11g/n:ofdm (orthogonal frequency division multiplexing)
bt：fhss(frequency-hopping spread spectrum)
|
| sensitivity @per |
wi fi: 1m: -92dbm@8%per
6m: -89dbm@10%per
11m:-86dbm@8%per
54m:-73dbm@10%per
135m:-67dbm@10%per
b t: -89dbm@1mbps, -85dbm@2mbps, -83dbm@3mbps
|
| rf power |
16dbm@11b, 14dbm@11g , 13dbm@11n
bt: max +10dbm
|
| antenna type |
connect to the external antenna through the half hole |
| the transmit distance |
wifi: indoor 100m, outdoor 300m, according the local environment
bt: 10m max.
|
| product dimension(l*w*h) |
12.2*13*1.6mm (lxwxh) ;tolerance: +-0.2mm |
| power supply |
3.3v +/-0.3v |
| power consumption |
standby mode 96ma@3.3v ,
tx mode 255ma@3.3v
|
| clock source |
40mhz |
| working temperature |
0°c to +70°c |
| storage temperature |
-55°c to +125°c |