20 Designing for Next Gen Wi-Fi Applications
QPF4530 5GHz Wi-Fi
Front End Module
QPF4530PCK-01 Evaluation Board
• Operating Frequency: 5150MHz to
5850MHz
• Optimized for +3.3V Operation
• Package Dimensions: 3mm x 3mm
• Features a pre-mounted QPF4530 in a QFN-16 package
• SMA connectors for transmit, receive,
and external antenna
• Prototyping platform for the QPF4530
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Telephone Operators and Wi-Fi…Working
Together?
One would think that after 3G and Wi-Fi fought their battles,
the demarcations between the two technologies would
be clear—Wi-Fi for private areas (home, office) and 3G
everywhere else.
But, no. Initially the telephone operators in 3GPP were
naturally quite suspicious about the development of
so-called "hotspots," public places where people could
get access to high-speed internet without the need for a
subscription. Fortunately for the telephone operators, it
turned out that running a large number of hotspots was not
a trivial effort, in particular for large retail and hotel chains,
cities, trains, etc. Public hotspot companies have been
slowly absorbed by the telephone operators, who started
to further embrace Wi-Fi and learned that "unlicensed"
was not as bad as it sounded. Operators even developed
strategies to use public hotspots along with private routers
to "off-load." In other words, use Wi-Fi connected hotspots
for traditional phone services.
At the same time, consumers and companies are learning
that running Wi-Fi networks is becoming more complex,
and telephone operators (and more recently, also cable
operators) are finding out that private Wi-Fi networks are
business opportunities—helping consumers and smaller
companies run their Wi-Fi networks.
And finally, with the further rapid growth of data traffic,
especially via video applications like YouTube, the operators
need increased capacity. But getting more frequency bands
is not easy. A faster way of getting this capacity, next to
leveraging Wi-Fi, was realizing that the successor of 3G,
4G or LTE technology can also run in the ISM band. This
realization gave rise to the concept of LTE-LAA–LTE with
Licensed Assisted Access.
Consumers and
companies are
learning that
running Wi-Fi
networks is
becoming more
complex…
https://bit.ly/3gsUrq2 https://bit.ly/31iuSlb
