Author Topic: Brazil develops rad hard circuits.  (Read 4460 times)

Offline baldusi

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Brazil develops rad hard circuits.
« on: 07/01/2011 12:08 am »
This article states that Santa Maria Design House has completed the design of a rad hard process.
This is the Google Translation:
Restricted technology
Brazil belongs to a select group of countries capable of producing radiation tolerant chips, as well as equipment, satellites, missiles and spacecraft, within the same system.
This technological leap has been guaranteed by the company Santa Maria Design House (SMDH), headquartered in Santa Maria-RS, according to an announcement of the National Council for Scientific and Technological Development (CNPq) of Brazil, through which the state has funded projects in this high-tech company.
The Santa Maria Design House, coordinated by Professor Joćo Baptista Martins dos Santos, is the result of a competition launched in 2008 by the CNPq for financing development projects with integrated components (chips) for the Aerospace, Defence and Communications.
Autonomous research
One of the four released so far by the technology group is the radiation-tolerant circuit. According to the National Research Council, for this type of circuit is necessary to have a library of cells to radiation tolerant. Since neither the U.S. space agency (NASA) and European Space Agency (ESA) provide such libraries (because they are considered strategic for the countries that have them), the Brazilian company is planning to develop a library of cells tolerant to radiation in Brazil .
In addition to radiation tolerant chips for use in satellites, spacecraft, or guided missiles, the Santa Maria Design House has also developed a radiation-tolerant electronic switch.
INPE order
This equipment was commissioned by the National Institute for Space Research (INPE) to ensure the proper functioning of the devices subject to the effects of electromagnetic radiation or cosmic, like the circuits on board satellites. The INPE is responsible for the satellites in Brazil that the country has developed, launched and operated in partnership with China.
The Brazilian radiation-tolerant circuit will begin to be tested by SMDH the first quarter of 2012.
According to the coordinator Martins, after several years away from areas of research and development, Brazil is redeeming the delay, because of their current economic situation and high rate of growth.
"More and more foreign companies coming to Brazil in search of partnerships and strategic projects. The Brazilian community can expect major advances in microelectronics, particularly in the field of electronics technology," said the entrepreneur SMDH.
« Last Edit: 07/01/2011 02:21 am by baldusi »

Offline Enthalpy

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Re: Brazil develops rad hard circuits.
« Reply #1 on: 01/11/2012 05:24 pm »
Most present-day chips are directly usable on satellites, as many micro-sats have shown, whose electronics uses to be more elaborate than on big sats.

Esa and the like have lists and special chips because:
- Teams get paid for that and must justify their wages
- Space agencies are disguised subsidies to manufacturers
- Very old chips (10µm channel length) didn't resist radiations so well
- A few functions (accurate analog in MOS) are sensitive to radiations
- A few missions (Jupiter) expose electronics to high doses
- Weapons shall survive a not-too-near nuclear blast, but space isn't directly related here.

So older space agencies make component selection unnecessarily expensive, and I hope newer players will be smarter.

Offline baldusi

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Re: Brazil develops rad hard circuits.
« Reply #2 on: 01/11/2012 05:58 pm »
Where do you get your information? The Russians have gone from industrial chips on pressurized compartments to rad hard/space spec'd chips and have won 10 years of life time in their satellites thanks to that. And the radiation environment is wildly different at 200km than at 36.000km.
Plus, you have to take into account the design life and orbital environment of the microsats, which are usually launched at low altitudes, and lack enough delta-v to last more than a few months, with satellites that are designed to fly in high energy orbits and last a decade or more.
And the new chips are quite a bit more susceptible to radiation. The smaller feature sizes and voltages makes them more sensitive to neutron and ion impacts.
I find your inflammatory style of misinformation very rude, to say the least.


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