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Wireless LAN (WLAN) Manufacturers & Services
By most accounts, Wireless Local Area Network (WLAN) first began in 1971 when a wireless computer network was implemented (dubbed the AlohaNet) at the University of Hawaii. In 1990 AT&T, developed WaveLAN, a Direct Sequence Spread-Spectrum (DSSS) that exhibited superior interference immunity. After many versions of designs using discrete components, in 1996, Harris (now Intersil) introduced their PRISM WLAN chipset. Needing a standard to guarantee interoperability, in 1997, the Institute for Electrical and Electronics Engineers published the first specification for IEEE 802.11 - 2.4 GHz, 2 Mbps, using Frequency Hopping (FH) and DSSS. In 1998, the ETSI HomeRF standard was developed for 2.4 GHz, 1.6 Mbps, Wideband Frequency Hopping. 1999 saw the publication of the IEEE 802.11b standard - 2.4 GHz, 11 Mbps, DSSS. With the unlicensed 2.4 GHz ISM band being crowded with existing WLAN, Bluetooth, ZigBee and microwave ovens, and with a need for higher data rates, in 1999 the IEEE released its 802.11a standard, which moved up into the 5 GHz ISM band, and provided 54 Mbps, OFDM data. In 2000, the ETSI HiperLAN2 emerged - 5 GHz, 54 Mbps, OFDM, connection-oriented QoS. Alas, the difficulty with mass-producing high yielding, inexpensive systems at 5 GHz forced, combined with revolutionary modulation methods, drove the IEEE in 2003 to provide a new high data rate g spec for operation back in the 2.4 GHz band, but offering the same data rate as the a spec 802.11g - 2.4 GHz, 54 Mbps, OFDM, compatible with 802.11b. Now, 802.11n is in the works for 2.4 GHz operation yielding greater than 100 MHz data rates.
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European Antennas Cheveley, Newmarket, UK
Tel +44 (0)1638 731888
Fax +44 (0) 1638 731999
European Antennas designs and manufactures high gain, printed circuit arrays,
ultra wide-band spirals, multi-octave bicones and collinear omni-directional antennas between 100 MHz and 40 GHz.
Antenna development projects are undertaken. Made in the UK and used worldwide
in satellite, security, commercial
and defense industries for WLAN, RFID, UAV, WiMAX, TETRA, telemetry and cellular applications.
Provides protection for all protocols (802.11 a/b/g and Bluetooth), and enterprises and their mobile users. As a key element of wireless LAN security, AirDefense complements wireless VPNs, encryption and authentication.
Specializing in CDMA, WISP and WLAN solutions as well as CW and TDMA used for drive-studies, antenna alignment, wardriving, survey sweeping, indoor & outdoor walk-about RF studies.
Manufacturer of semiconductors for wired and wireless communications including Bluetooth, cable, cellular, consumer electronics, data/telecom networks, DSL, enterprise networking, mobile multimedia, satellite, voice over IP (VoIP), and wireless LAN.
Frequency converters, power amplifiers, low noise amplifiers, local oscillators, patch antennas, parabolic antennas & antenna arrays for WLAN, GPS, cellular, point to point, satellite and other applications.
RFMD is the worlds largest and most diversified RF solutions provider. Our extensive product portfolio includes cellular front ends, cellular transceivers, RF components and SOCs for the cellular handset, cellular base station, WLAN, CATV networking, aerospace, defense, and GPS markets.
Wireless networking equipment for Wi-Fi & broadband wireless networks, provides enterprise & service provider customers with wireless solutions for the mobile enterprise, security and surveillance, last mile access, voice and data backhaul, public hot spots, and metropolitan area networks.
A fabless semiconductor company providing a diversified portfolio of radio frequency (RF) Systems on a Chip integrated circuits (ICs) including broadband wireless access transceivers (BWA), Channel Stacking Switches (CSS) & Band Translation Switches (BTS), and silicon tuners.
Product lines servicing the WLAN, CDMA, WCDMA, TD-SCDMA, and GSM bands. Custom solutions available on request.
Active Products: Power amplifiers, selected frequency components, transceiver modules. Passive Products: Filters, combiners, diplexers, power splitters/dividers, couplers, bridges. Consumer Electronics: IP camera, digital cameras, iPod accessories.
Specializing in wireless networking and Internet applications including the VisiWave Site Survey product - lets you visualize the radio waves and demonstrate the effectiveness of your coverage.
The Wireless Networking Industries information source - Find out how about wireless LAN fundamentals, proper wireless LAN design, and advanced wireless network security.
Linux Wireless LAN Howtos, wireless LAN drivers web pages, wireless Linux software on the Internet, security software for your wireless LAN, public wireless Linux networks, wireless LAN hardware (surveys and reviews).
At Wireless Projects our goal is to bring wireless technologies to the residential and business user. Whether you already have a WLAN installed or are considering installing one, Wireless Projects will help you get the best out of your wireless investment.
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RF Cafe Erie, PA (814) 833-1967
A Disruptive Web Presence GPS Coordinates: N 42°04.577', W 080°11.757'
European Antennas designs and manufactures high gain, printed circuit arrays,
ultra wide-band spirals, multi-octave bicones and collinear omni-directional antennas between 100 MHz and 40 GHz.
Antenna development projects are undertaken. Made in the UK and used worldwide
