Feeds

DARPA chips in on Terahertz research

Solid-state receiver hits 850 GHz

Build a business case: developing custom apps

The next frontier for solid-state electronics, the Terahertz boundary, has come a little closer with DARPA announcing a receiver operating at 850 GHz.

Currently, receiving and decoding THz signals requires a frequency down-conversion on the way, because nobody’s produced chips that can operate at such high frequencies. Down-conversion, however, limits the operating power of the receiver, and sets an unwanted floor under its signal-to-noise ratio – and adds to the footprint of the receiver.

In this announcement, DARPA says it’s closing in on the THz range, producing a solid state receiver operating at 850 GHz (0.85 THz).

The agency says this development represents a step towards producing monolithic microwave ICs – MMICs to their friends – that can process the very high frequencies involved. It’s part of a two-part program, one focusing on transistors that can handle signal processing, the other developing the necessary power transistors.

DARPA’s own interest includes communications and its see-through-clouds VISAR (video synthetic aperture radar) program, designed to let fighters operate in conditions that currently inhibit current infrared sensors.

THz electronics are also useful for medical imaging (avoiding the side-effects associated with ionizing radiation – such as X-rays), and a range of industrial processes. ®

Securing Web Applications Made Simple and Scalable

More from The Register

next story
Asteroid's DINO KILLING SPREE just bad luck – boffins
Sauricide WASN'T inevitable, reckon scientists
BEST BATTERY EVER: All lithium, all the time, plus a dash of carbon nano-stuff
We have found the Holy Grail (of batteries) - boffins
The Sun took a day off last week and made NO sunspots
Someone needs to get that lazy star cooking again before things get cold around here
Boffins discuss AI space program at hush-hush IARPA confab
IBM, MIT, plenty of others invited to fill Uncle Sam's spy toolchest, but where's Google?
Famous 'Dish' radio telescope to be emptied in budget crisis: CSIRO
Radio astronomy suffering to protect Square Kilometre Array
Bad back? Show some spine and stop popping paracetamol
Study finds common pain-killer doesn't reduce pain or shorten recovery
Forty-five years ago: FOOTPRINTS FOUND ON MOON
NASA won't be back any time soon, sadly
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.