Wireless adapter card
Generally, a local area network (LAN) enables a plurality of individual and independent computers to communicate with each other within a limited area. The LAN allows the computers to share information data with each other using communication channels. A LAN (local area network) card is employed to allow a computer to access a network. A personal computer card having a thin architectural standard, such as a PCMCIA card, can be used to interface a peripheral to a portable computer. Advances in technology have enabled high speed wireless communication and spurred the growth of wireless, and now mobile computing systems. This technology has enabled many new wireless services and systems including wireless LANs. Because the design of the portable computer is restricted in size and shape in direct relation to its mobility, it is inconvenient to mount a standard LAN card on the portable computer. Therefore, a wireless LAN card is mostly employed in the portable computer. A wireless adapter card is similar to a wired adapter in that it permits a computer or other device to send and receive data from external sources. A wireless adapter may be installed as an adapter card or in an adapter slot such as a universal serial bus (USB) slot. The wireless network card may be a PCI card, a PCMCIA card, or another card that is added to a corresponding wireless device. The adapter may consist of an integrated package or several separate components that can be attached via appropriate cabling. A wireless adapter typically consists of two major portions: a radio portion and a baseband portion. The radio portion of the wireless adapter contains the transmitter, receiver and associated circuitry to provide for RF communications. The baseband portion provides a baseband signal to the transmitter and accepts baseband signals from the radio receiver.
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