Featured Research

from universities, journals, and other organizations

New Approach May Help In Design Of Future Circuits

Date:
April 25, 2000
Source:
Purdue University
Summary:
As electronic circuits become more compact, the individual, overlapping wires are crammed so close together that their signals interfere with each other, causing devices to work more slowly or to fail. Now, a Purdue University researcher is proposing a novel design strategy to reduce the interference. His method also might enable engineers to predict how the tiny circuits will perform long before building the first prototype, which would speed development and reduce costs.

WEST LAFAYETTE, Ind. – As electronic circuits become more compact, the individual, overlapping wires are crammed so close together that their signals interfere with each other, causing devices to work more slowly or to fail.

Now, a Purdue University researcher is proposing a novel design strategy to reduce the interference. His method also might enable engineers to predict how the tiny circuits will perform long before building the first prototype, which would speed development and reduce costs.

Unlike conventional circuit designs, the new method takes into account two factors that lie at the heart of the interference. First, the thin metal lines that conduct electricity often overlap. Second, in two parallel lines that are close to each other, the electrical current often travels in the opposite directions. Both factors increase the degree of "interwire capacitance," or the unwanted storage of electricity in the insulating material between the wires.

That stored electricity builds up until it eventually discharges, hindering the circuit's overall performance, slowing down a device's operating speed, and, in some cases, causing the circuit to fail, says Kaushik Roy, an associate professor in Purdue's School of Electrical and Computer Engineering. Details about his design method will be discussed during an engineering conference in May.

The capacitance problem will become more severe in a new generation of circuits designed to operate at lower power than conventional devices. By consuming less electricity, the devices will use lighter-weight batteries and run longer on a single charge. However, the interference between wires causes those types of low-power circuits to malfunction more frequently than conventional circuits.

In Roy's method, the capacitance is decreased significantly by designing circuits so that the electrical current in parallel wires is transmitted in the same direction. "This is a layout that is based on the direction of current," Roy says. "Most architectures don't do that." The wires also are arranged to reduce the degree with which they overlap.

Doctoral student Yonghee Im will present a research paper about the work May 24, during the Custom Integrated Circuits Conference, sponsored by the Institute of Electrical and Electronics Engineers, in Orlando, Fla.

The approach might be used for the "predictable design" of future circuits containing features billionths of a meter in diameter, or, in the "nanometer" range, he says. In such compact circuits, wires and transistors – the solid-state switches without which modern electronics would be impossible – are crammed closer together than they would be in more conventional designs. Engineers would ideally like to know how interwire capacitance would affect the performance of new designs before actually building the circuits.

"Then they would know whether to even pursue a specific architecture," says Roy, who has developed a computer model for predicting a design's performance ahead of time.


Story Source:

The above story is based on materials provided by Purdue University. Note: Materials may be edited for content and length.


Cite This Page:

Purdue University. "New Approach May Help In Design Of Future Circuits." ScienceDaily. ScienceDaily, 25 April 2000. <www.sciencedaily.com/releases/2000/04/000425072631.htm>.
Purdue University. (2000, April 25). New Approach May Help In Design Of Future Circuits. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2000/04/000425072631.htm
Purdue University. "New Approach May Help In Design Of Future Circuits." ScienceDaily. www.sciencedaily.com/releases/2000/04/000425072631.htm (accessed October 22, 2014).

Share This



More Matter & Energy News

Wednesday, October 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Internet of Things Aims to Smarten Your Life

Internet of Things Aims to Smarten Your Life

AP (Oct. 22, 2014) As more and more Bluetooth-enabled devices are reaching consumers, developers are busy connecting them together as part of the Internet of Things. (Oct. 22) Video provided by AP
Powered by NewsLook.com
Thanks, Marty McFly! Hoverboards Could Be Coming In 2015

Thanks, Marty McFly! Hoverboards Could Be Coming In 2015

Newsy (Oct. 21, 2014) If you've ever watched "Back to the Future Part II" and wanted to get your hands on a hoverboard, well, you might soon be in luck. Video provided by Newsy
Powered by NewsLook.com
Robots to Fly Planes Where Humans Can't

Robots to Fly Planes Where Humans Can't

Reuters - Innovations Video Online (Oct. 21, 2014) Researchers in South Korea are developing a robotic pilot that could potentially replace humans in the cockpit. Unlike drones and autopilot programs which are configured for specific aircraft, the robots' humanoid design will allow it to fly any type of plane with no additional sensors. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
Graphene Paint Offers Rust-Free Future

Graphene Paint Offers Rust-Free Future

Reuters - Innovations Video Online (Oct. 21, 2014) British scientists have developed a prototype graphene paint that can make coatings which are resistant to liquids, gases, and chemicals. The team says the paint could have a variety of uses, from stopping ships rusting to keeping food fresher for longer. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins