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Wireless LAN | WLAN | Wi-Fi
Manufacturers & Services

By most accounts, Wireless Local Area Network (WLAN, Wi-fi) 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.

WLAN Spectral Masks (802.11a/b/g)       Wireless LAN (WLAN) Resources

NOTICE: Most search engines do a really good job of locating useful data if your search terms are well thought out, so rather than me supposing I know what you are looking for, I have provided a Search box at the top of the page for you to use. If you are interested in advertising, please visit my Advertising information page. Thank you.

Cobham Antenna SystemsCobham Antenna Systems
Suffolk, United Kingdom
+44(0)1638 732177

European Antennas Ltd trading as
Cobham Antenna Systems, Microwave Antennas
The same people, the same location, the same
advanced antenna engineering technology!
Specialising in the design and development of high gain, printed circuit arrays, ultra wide-band directional antennas, multi-octave bicones and high gain collinear omni-directional antennas. Large catalogue of antenna designs. Specialist development projects from 250 MHz to 40 GHz. Communication industry awareness and expertise in antenna physics ensure customer satisfaction.
- Product & Service Offerings -
PMR antennas at London Heathrow underground car parkn - Cobham Antenna SystemsCOMMERCIAL: • Cellular • PMR
     • Tetra Broadcast • WiMAX/LTE RFID
     • WLAN Base Station Catalogue
Omni 3D radiation pattern - Cobham Antenna SystemsMILITARY & DEFENCE: • Tactical Comms
     •Link16 Radar • Missile
     • IED CM Unmanned Systems
GPS positioning of Shell Norskn - Cobham Antenna SystemsSATELLITE:
     • Ground Based Mobile Satcoms
       Thuraya
Eurocopter, video downlinksn - Cobham Antenna SystemsSECURITY: • EW • COFDM • Bodyworn
     • Covert •Tracking Surveillance
     • Counter Terror Cellular DAS

 

AirDefense, Inc
airdefense.net
877-220-8301 | Alpharetta, GA
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.

ANADIGICS
anadigics.com
908-791-6000 | Warren, NJ
WiMAX 802.16 power amplifiers, WLAN 802.11 front-end integrated circuits, WLAN 802.11 power amplifiers.

Berkeley Varitronics Systems
bvsystems.com
732-548-3737 | Metuchen, NJ
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.

Broadcom Corp
broadcom.com
949-926-5000 | Irvine, CA
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.

Cisco Systems
cisco.com
800-553-6387 | San Jose, CA
Mobile wireless, wireless integrated switches and routers, wireless IP telephony, LAN Access, LAN controllers, network management, security servers.

CWNP Program
cwnp.com
770-433-9339 | Smyrna, GA
CWNP is the industry standard for vendor neutral, enterprise wireless LAN certifications, offering four levels of enterprise WLAN certification, from novice to expert. Our focus is to educate IT professionals in the technology behind all enterprise WLAN products, enabling the ability for these professionals to enter an enterprise and manage its wireless LAN infrastructure regardless of the vendor solution utilized.

Meetinghouse
mtghouse.com
603-430-7710 | Portsmouth, NH
802.1X and WPA solutions from Meetinghouse help organizations secure their wired and wireless LANs with interoperable Layer 2 standards-based software.

Orban Microwave (OMP)
orbanmicrowave.com
915-590-0825 | El Paso, TX
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.

Parsec TechnologiesParsec Technologies
Plano, Texas
1-972-804-4600
Parsec specializes in embedded passive and active antenna modules for GPS, GNSS, M2M (Machine-to-Machine), IoT (Internet-of-Things) and LTE. Parsec also has a full line of high performance, LNA ICs for wireless and mobile markets. In today's IoT wireless devices, Parsec's offerings significantly improve system performance and signal integrity with high efficiency embedded antennas using smaller ground planes, higher gain, and higher IP3 performance while insuring low noise and excellent receiver abilities.
Our Product Offerings
 • GPS/GNSS Active/Passive Antennas and LNAs
    - Active GPS/GNSS Modules
    - Passive GPS/GNSS Antennas
    - Vertical Mount Passive GPS/GNSS Antenna
 • LNA Amplifier ICs
    - GPS: PT1233D Amplifier
    - M2M: PT1233D Amplifier
    - LTE: PT683-3 Amplifier
    - HDTV: PT1201 Amplifier
 • Passive LTE Antenna (Vertical Mount)
Antenna Design Services
Parsec is now offering Antenna Design Services to help customers efficiently and effectively imbed ultra small footprint, high radiation efficiency GPS/GNSS and M2M active antenna modules into their products.

 

Parsec Technologies
parsec-t.com
972-804-4600 | Plano, TX
Amplifier chips for various wireless and mobile antenna markets. HDTV, M2M, LTE, GPS, WiFi, CATV / broadband, VHF / UHF, digital audio broadcast (DAB), macro cell & small cell, cognitive radio, software defined radio (SDR), & TV whitespace.

Proxim Corp
proxim.com
800-229-1630 | Sunnyvale, CA
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.

RF & Connector Technology | rf-ct.com
+82 505 274 0002 | Suwon, Kyounggi ,Korea
Coaxial connector, cable assembly & RF passive components

Sagrad
sagrad.com
800-779-7139 | West Melbourne, FL
Wireless audio, 802.11, IC design, WiFi modules, prototype builds, engineering services. Sagrad is actively seeking contracts with the U.S. government and employs only US citizens.

Ubiquiti Networks
ubnt.com
408-942-3085 | Milpitas, CA
Broadband wireless solutions for WISP, WiFi, WLAN, and other applications in the 900 MHz and 2.4/5 GHz ISM bands. Base stations, PC cards, embedded systems (plug-in cards), AirView™ spectrum analyzers, Bullet™ antenna-mounted transponders.

VisiWave
visiwave.com
269-806-9056 | Kalamazoo, MI
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.

Wireless LAN Shop
wirelesslan-shop.de
Germany
WLAN products.

Wireless Projects
wirelessprojects.ie
+353 1 878 3377 | Ireland
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 Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
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