Product category:
Communications ICs (Wireless)
News Release from: Intersil | Subject: Prism GT
Edited by the Electronicstalk Editorial
Team on 12 November 2002
Two-chip 802.11g solution provides
54Mbit/s WLANs
Intersil is sampling its next generation Prism GT two-chip WLAN solution for high-speed wireless networking to the latest 802.11g WLAN standard for 54Mbit/s at 2.4GHz.
Intersil is sampling leading partners and OEMs with its next generation Prism GT two-chip WLAN solution for high-speed wireless networking to the latest 802.11g WLAN standard for 54Mbit/s at 2.4GHz Intersil has begun design projects with Accton Technology Corporation, Actiontec Electronics, Ambit Microsystems Corporation, BroMax Communications, Z-Com and other partners who are already developing new generation WLAN products for Intersil's end customers
This article was originally published on Electronicstalk on 20 May 2003 at 8.00am (UK)
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Intersil's second-generation Prism GT WLAN 802.11g compliant chipset is now shipping to leading customers and OEMs.
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Intersil will demonstrate the capabilities of Prism GT and Prism Duette wireless chipsets by wirelessly streaming HDTV video at 2.4 and 5GHz this week at Comdex in Las Vegas.
The innovative Prism GT chipset solution allows data transmission speeds up to 54Mbit/s while remaining 100% backward compatible with the existing installed base of over 30 million Wi-Fi or 802.11b systems worldwide.
Designed to support the new 802.11g high-rate draft standard for wireless local area networking (WLAN) products operating in the 2.4GHz band, Prism GT provides twice the range and consequently higher throughput than currently marketed 802.11a WLAN products and over three times the throughput of existing 802.11b products.
Intersil has skilfully combined the new 802.11g draft standard's mandatory modulation schemes - complementary code keying (CCK) used in 802.11b, and orthogonal frequency division multiplexing (OFDM) used in 802.11a - with its proven low-cost ZIF (zero IF) architecture in designing the Prism GT chipset.
Further reading
Chipset breathes new life into 2.4GHz at 54Mbit/s
Intersil has released the industry's first WLAN chipset designed to support the new 802.11g high-rate WLAN Draft Standard.
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CCK ensures backward-compatibility with the installed Wi-Fi base, while OFDM provides the high-speed 54Mbit/s operation required for today's high-bandwidth applications.
"We have recently completed an extensive tour throughout the USA and Asia demonstrating what we believe is the most integrated, highest performing solution for the draft 802.11g standard - Prism GT.
The response from customers has been very enthusiastic and multiple new design wins are underway.
The range and throughput performance of our Prism GT solution speaks for itself and we are very excited that Prism GT is going to set the standard by which all other WLAN solutions will be judged", said Larry Ciaccia, Vice President and General Manager of Intersil's Wireless Networking Product Group.
"Intersil has leveraged over five years of WLAN innovation and IC integration to develop Prism GT", added Ciaccia.
"In both our Prism GT chip set and Prism Duette - our recently announced 802.11a, b, and g dual-band WLAN chipset - we have implemented a solution that is capable of delivering true 54Mbit/s OFDM-based performance with seamless backwards compatibility with 802.11b".
Prism GT will enable a new generation of high-datarate platforms for operation in the 2.4GHz spectrum that delivers a three-fold increase in throughput over currently marketed 802.11b+ products.
Lower power consumption is also realised compared with systems operating in the 5GHz spectrum.
These advantages make Prism GT an ideal solution for high-bandwidth enterprise applications, such as wireless video conferencing and large file transfers, as well as advanced home networking applications such as multichannel CD-quality audio, DVD-quality video streaming and broadband services.
The Prism GT solution uses Intersil's proven direct-down-conversion architecture already developed for the Prism 3 chipset and the digital signal processing expertise gained in the development of 5GHz 802.11a products.
The transceiver integrates the receiver, transmitter, synthesiser and filters onto a single chip, and interfaces directly with the baseband processor to provide system designers with a complete end-to-end WLAN chipset solution.
The medium access controller (MAC) includes enhanced security and network management features.
The Prism GT transceiver is an RF-to-baseband solution that takes high frequency radio waves and directly converts them to baseband signals during reception, or directly up-converts them from the low-level baseband signal to radio frequency during transmission.
This architecture completely eliminates the need for the intermediate frequency (IF) stage found in most radios.
Eliminating the IF stage reduces complexity, bill-of-materials (BOM) and manufacturing costs, as well as enabling smaller form factors appropriate for portable, handheld devices.
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