A wireless network is actually available in voice communication to data network. It allows user to build wireless connection a certain distance. It includes infra red technology, radio frequency, and etc. The wares that use wireless connection are computer, communicator, mobile phone, PDA, PC, and so on. This technology is multifunction item.
Like another wireless, wireless network can be classified into several types based on the transmission distance.
Wireless Wide Area Networks (WWANs)
WWAN technology make the users build the wireless connection through public network and private network. The connection can be made to coverage the large area, like city or country through several transmission use or satellite system made by service telecommunication operator.
Wireless Metropolitan Area Networks (WMANs)
WMAN technology enables user to make wireless connection in some locations between some location in one area metropolitan (example, between some building in one town or in campus), we don’t need to uses fiber optic, that why very expensive.
Wireless Local Area Networks (WLANs)
WLAN technology user to make wireless connection in one area local (example, in a office building, campus, or public area, as airport and cafe).
Wireless Personal Area Networks (WPANs)
WPAN technology enable user to make wireless connection (ad hoc) for simple instrument, like PDA, cellular phones or notebook. It can uses in personal area room (personal operating space or POS).
CDMA (Code Division Multiple Access), which technology wireless have as a base spread spectrum for speaking line in a manner with differentiate unique codes inter user, sets of equipment that needed to use that service is telephone terminal CDMA 2000 1X, that is a fixed telephones terminal..
Revolutions wireless technology moving parallel, technology communications sound (cellular phones), technology broadcasting (television and radio), and technology internet. At the end of 1990-an ago, in sight all three will combine become one sets.
The total cables which are used to supply electric into a system of electronic set sometimes can be very disturbed. That company develops a technology that is used infra red to change electric energy from transmitter set in stop contact to be optic energy. That energy is changed back into electric energy by a receiver made bay solar cell.
The research done by Power Beam can spray 0.5 watt energy to solar cell along 10 m. The energy is sufficient to turn on the several LED lights and can be used to recharge battery in digital photo frame.
To anticipate the danger that can be arise, Power Beam applies technology that can be died automatically when someone or animal pass the X Rays path. When the Transmitter does not work, the electric supply can be taken over by battery.
Now Power Beam still focuses in developing commercial product which consists of digital photo frame, loudspeaker surround, and light. It’s all wireless technology. In the next 18 months, that product can be released into the market.
According to Grier Graham, Vice President who handles the development product, one day people can use that technology to supply electric to a notebook without using cable in long distance.