As we move deeper into the wireless era, we strive
for faster Internet speeds. Slow wireless access is becoming archaic and now we
are trying to satisfy our selves with the new emerging online multimedia, such
as bigger macromedia flash movies or high resolution video streaming. Today we
take a look at new offering from X-micro, a PCMCIA 802.11g card. It is a vast
improvement from the previous 802.11g card, it moves up all the way from 11Mbps
to turbo charged 108Mbps.
Estimated Price: 49
2.412-2.484 GHz ISM Band
between 30 to 300 meters
Data Rates: 802.11g up to 54Mbps
and up to 108Mbps when super G is enabled
Sensitivity: Rx < -92dBM
Antenna: Chip Antenna
computer, CPU speed of 200 Mhz or above
Memory: 64MB or
above, 128MB recommended
several specifications in the 802.11 family:
-- applies to wireless LANs and provides 1 or 2 Mbps transmission in the 2.4
GHz band using either frequency hopping spread spectrum (FHSS) or direct
sequence spread spectrum (DSSS).
-- an extension to 802.11 that applies to wireless LANs and provides up to 54
Mbps in the 5GHz band. 802.11a uses an orthogonal frequency division
multiplexing encoding scheme rather than FHSS or DSSS.
(also referred to as 802.11 High Rate or Wi-Fi) -- an extension
to 802.11 that applies to wireless LANS and provides 11 Mbps transmission
(with a fallback to 5.5, 2 and 1 Mbps) in the 2.4 GHz band. 802.11b uses only
DSSS. 802.11b was a 1999 ratification to the original 802.11 standard,
allowing wireless functionality comparable to Ethernet.
-- applies to wireless LANs and provides 20+ Mbps in the 2.4 GHz band.
Here we have a
clear view of the 802.11 technology.