Wireless Gigabit Alliance Creating 60 Ghz Standard for Multi-Gigabit Communication Speed Applications

Wireless Gigabit Alliance will be creating a 60 Ghz communication standard. The group’s vision is to create a global ecosystem of interoperable products based on this specification, which will unify the next generation of entertainment, computing and communications devices at speeds more than 10 times faster than today’s wireless LANs. All products based on the WGA specification will be capable of at least 1 Gbps at a typical range of 10 meters, and some implementations will be capable of speeds more than 6 Gbps at greater distances.

EETimes has coverage on the standard that is being formed.

The group aims to get to market ahead of official efforts in the IEEE to develop a 60 GHz version of Wi-Fi targeting minimum throughput of a Gbit/s. The 802.11ad group hopes to finish market requirements documents this year and put out a call for technical proposals sometime in 2010 with the aim at selecting a standard in 2011.

The Wireless Gigabit Alliance that aims to release later this year a specification for 60 GHz networking at rates up to 6 Gbits/second. The technology will compete with startups such as Amimon and SiBeam that have rallied similar alliances around their technologies and already delivered working chips to OEM partners

The spec uses separate protocol adaptation layers to target a wide range of applications. They range from whole home video with a range of 10 meters to wireless HDMI and lower power Gbit/s links over five meters for devices such as on cellphones.

“A lot of people anticipate 60 GHz products that will include 2.4 and 5 GHz Wi-Fi as well,” said Bill McFarland, chief technology officer of Atheros, a WiGig member. “I definitely think we can support tri-band at 65nm,” he added.

SiBeam is the closest competitor to the WiGig Alliance. SiBeam’s chip designed solely for use as a wireless version of HDMI was demonstrated in TVs from Panasonic and Toshiba at CES in January. Its WirelessHD Alliance includes members such as Broadcom, Intel, LG, Samsung and Sony who already are working on a second-generation spec.

– 60 GHz technology will enable you to make more compact handheld products that function faster, better and cheaper, while decreasing power consumption.
– Richer, higher resolution and more extensive use of multimedia and video will be possible
– 60 GHz technology will enable manufacturers to place radios in exceedingly smaller form factors, low battery consumption and minimal part count.

More than 15 Big technology firms have allied to push the new standard.

· Atheros Communications, Inc.
· Broadcom Corporation
· Dell, Inc.
· Intel Corporation
· LG Electronics Inc.
· Marvell International LTD.
· MediaTek Inc.
· Microsoft Corporation
· NEC Corporation
· Nokia Corporation
· Panasonic Corporation
· Samsung Electronics Co.
· Wilocity

Fast and Energy Efficient

60 GHz is the ultimate complement to both 2.4 and 5 GHz. The 60 GHz band simply has much more bandwidth available (7-9 GHz of spectrum) vs. 83.5 MHz in the 2.4 GHz band – which enables much higher data rates. Applications that require multi-gigabit per second speeds (like uncompressed video transmission) to operate will need to run in 60 GHz. Other applications that lend themselves to lower speeds, but require operation throughout the home are better suited to traditional “whole home coverage” 802.11 in the 2.4 and 5GHz bands.

The WGA specification will include a high-efficiency PHY mode for mobile devices, with error-control schemes and MAC-layer features that are optimized for energy efficiency.

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1

Could graphene be the impetus for electromagnetic propulsion and the actual electro-framework for an aviation device such as a so-called "flying saucer"?
DaveSalcido@gmail.com

2

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20080013522_2008013354.pdf" REL="nofollow">Discussion of materials for shielding against ionizing radiation. The more hydrogen in the materials the better the radiation shielding.

Lithium hydride is a popular shield material for nuclear power reactors, but is generally not useful for other functions. The graphite nanofiber materials heavily impregnated with hydrogen or any composite thereof may well represent a viable multifunctional component in future space structures. In this case study of the graphite nanofiber, hydrogen content is ~ 68% wt while in laboratory in single-walled carbon nanotubes (SWNT) hydrogen storage has been achieved ~ 10% wt.

So hydrogen added to graphite and graphene would be good regular physical shielding material. Probably not that helpful for widespread use but for some hardened sites it could be affordable and helpful.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20050180620_2005179931.pdf" REL="nofollow">Revolutionary methods of radiation shielding

A discussion about how much magnetic and other electric fields are needed to stop radiation.

(1) Active (electromagnetic) shield concepts:
• Electric fields.
• Magnetic fields (attached coils).
• Magnetic fields (deployed large-diameter coils or shields bearing magnets).
• Plasma methods (expand magnetic field, produce electric field).
Common elements:
• Many previous studies of physics for most; some studies of engineering.
• Requires space power to develop fields; requires superconducting magnets.
• To shield against GCRs one must have either very high fields or very extended fields.
• ∫ L BXdl
> 1,000 G km or V > 10**10 V.
Proposed figures of merit/discriminators:
• ∫ L BXdl
> 1,000 G km or V > 10**10 V.
• Smallest stored energies in field.
• Minimized effects of fields on crew and equipment (<2,000 G).
• Perceived practicality.
• Hazards.

(3) Novel materials concepts:
• Quasi-crystal H absorbers.
• Palladium, alloys as H absorbers.
• Carbon nano-material absorbers.
• Solid H.
• Metal hydrides.
• Borated CH2 and other compounds.
Common elements:
• Mass shielding.
• Goal is lowest average atomic mass achievable (polyethylene, CH2 is current “standard”).
• Dual use would modify the lowest average atomic mass rule.
• Neutron absorption.
• Structural or other use.
• Volumetric considerations.
Proposed figures of merit/discriminators:
• Average atomic mass number.
• Mass fraction of H.
• Dual use as construction material, neutron absorber, fuel, etc.
• Perceived practicality (fabrication, mechanical properties).
• Hazards.

3

I wonder how successfully this substance can be added to polyethylene-based (plastic) structural siding and roofing materials? I would think the increased thermal insulation (and to a lessor extent electrical as well) achieved, along with the increased structural strength, would be considered a positive factor, even at some appreciable added cost over traditional materials.

In light of your recent post on radioactivity protection from structural design and materials Brian, any information as to graphene's radiocative shielding qualities?