Sesame seed-sized antenna increases WIFI speed by 200 times

Aug 28, 2012

Researchers from A*STAR's Institute of Microelectronics (IME) have developed the first compact high performance silicon-based cavity-backed slot (CBS) antenna that operates at 135 GHz. The antenna demonstrated a 30 times stronger signal transmission over on-chip antennas at 135 GHz. At just 1.6mm x 1.2mm, approximately the size of a sesame seed, it is the smallest silicon-based CBS antenna reported to date for ready integration with active circuits.

IME's innovation will help realise a wireless communication system with very small form factor and almost two-thirds cheaper than a conventional CBS antenna. The antenna, in combination with other millimetre-wave building blocks, can support wireless speed of 20 Gbps—more than 200 times faster than present day Wi-Fi, to allow ultra fast point-to-point access to rich media content, relevant to online learning and entertainment.

On the research breakthrough, Dr Hu Sanming, a key researcher from IME leading the antenna project, said, "The novel use of polymer filling enables >70% antenna size shrinkage and a record high gain of 5.68 dBi at 135 GHz. By filling the antenna cavity with polymer instead of air, we can achieve a flat surface for subsequent processing by standard technology that is amenable to mass production."

"The team has also designed a three-dimensional (3D) architecture to integrate the antenna with active circuits to form a fully integrated wireless millimetre-wave system-in-package solution with high performance, reduced footprint and low ," commented Dr Je Minkyu, Principal Investigator of the and Systems Laboratory at IME.

Professor Dim-Lee Kwong, Executive Director of IME, said, "IME's silicon-based 135 GHz integrative technology and the proposed 3D architecture have immense commercial potential as it combines form with function that can be realised with standard mass production infrastructure. These salient features make our technology extremely attractive to product developers who are looking to capture emerging markets in millimetre-wave applications."

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not rated yet Aug 28, 2012
Impressive ... tho i dont understand an item: 70% reduction is size means to me that it's now 30% of the size of the earlier device .. that'd be 3 sesame seeds .. So, anyone, where is there any device using such an antenna?
not rated yet Aug 28, 2012
So, anyone, where is there any device using such an antenna?
A future cell phone, once the cell phone manufacturers get busy and make one, service providers make a 135GHz cellular network, and governments authorize radio transmission at 135GHz.

Then of course you have to design a protocol to use it, figure a way to stop collisions... you know... engineering...
not rated yet Aug 28, 2012
This will allow a huge bandwidth potential per device. And it might make a few insect species extinct.
not rated yet Aug 29, 2012
im sure someone thought of this already, but im thinkin of wireless-powered, mass-produced, locator stickers. id put one on my keys/wallet/small items of interest, and would be able to locally locate them without needing GPS on my cellphone. would go nicely with flexible/wearable electronics perhaps?
not rated yet Aug 29, 2012
"sesame seed sized"

are they trolling us with these 'measurements'?
not rated yet Aug 29, 2012
A future cell phone

Wireles on-chip communication is a hot item for the next generation of processors.
The wiring on chips already takes up a lot of the space - and it also produces a lot of the waste heat. If some of the wiring could be replaced by sender/receiver antennas communicating accross the chip - or even between stacks of chips without hardwired connections - then that would be a great boon to chip designers and could further increase transistor density with current manufacturing methods.
not rated yet Aug 29, 2012
"sesame seed sized"
are they trolling us with these 'measurements'?

Not likely. Although the article doesn't explain it well, the advance appears to be using a polymer to shrink the antenna by 3x over an air cavity. At 135 GHz, in vacuum the wavelength is only about 2.2 mm (think "2 mm band" amateur radio and radio astronomy) or apparently about 1/3 that using this polymer.

The article abstract says, "the higher synthesized effective dielectric permittivity of the BCB-polymer mixed region than BCB-air mixed one provides the possibility for compact antenna array designs."

A little more can be gleaned from the abstract at
IEEExplore http://ieeexplore...D6247473

They also report on an antenna array they built.

Or was that a different research groups?

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