WiFi antenna (Wi-Fi, wireless fidelity antenna)
Implementation of computer-based wireless communication devices, including wireless LANs and wireless ready systems is a quickly emerging and evolving technology. Wireless networks allow computing devices to share information and resources via wireless communications. Examples of computing devices used in wireless networks include laptop or desktop computers, personal digital assistants (PDAs), mobile phones such as cellular phones and satellite phones, data terminals, data collection devices and other portable and non-portable computing devices. The IEEE 802.11b standard or 802.11 wireless fidelity or 802.11 Wi-Fi is an extension of the IEEE 802.11 standard. WiFi technology allows a raw wireless data transmission rate of approximately 11 Mbps at indoor distances from several dozen to several hundred feet, and outdoor distances of several to tens of miles using an unlicensed portion of the 2.4 GHz band in 14 overlapped channels. The IEEE 802.11b standard utilizes binary phase shift keying (BPSK) for 1.0 MBPS transmission, and quadrature phase shift keying (QPSK) for 2.0, 5.5 and 11.0 Mbps transmission. Wireless Fidelity (Wi-Fi) networks (or "Hot Spots") are being installed by many major telephone carriers to provide added value to their basic retail business. Antennas are used in communication systems to send and receive information using electromagnetic waves. Systems that use antennas include short-range communication links for wireless networks, such as Wireless Fidelity (WiFi), cellular phone, or Bluetooth.
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