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.

Related Articles


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 March 29, 2015 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 March 29, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Sunday, March 29, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Inspectors Found Faulty Work Before NYC Blast

Inspectors Found Faulty Work Before NYC Blast

AP (Mar. 27, 2015) An hour before an apparent gas explosion sent flames soaring and debris flying at a Manhattan apartment building, injuring 19 people, utility company inspectors decided the work being done there was faulty. (March 27) Video provided by AP
Powered by NewsLook.com
Facebook Building Plane-Sized Drones For Global Internet

Facebook Building Plane-Sized Drones For Global Internet

Newsy (Mar. 27, 2015) Facebook on Thursday revealed more details about its Internet-connected drone project. The drone is bigger than a 737, but lighter than a car. Video provided by Newsy
Powered by NewsLook.com
Robot Returns from International Space Station and Sets Two Guinness World Records

Robot Returns from International Space Station and Sets Two Guinness World Records

Reuters - Light News Video Online (Mar. 27, 2015) The companion robot "Kirobo" returns to earth from the International Space Station and sets two Guinness World Records. Sharon Reich reports. Video provided by Reuters
Powered by NewsLook.com
Residents Witness Building Explosion, Collapse

Residents Witness Building Explosion, Collapse

AP (Mar. 26, 2015) Witnesses recount the sites and sounds of a massive explosion and subsequent building collapse in the heart of Manhattan&apos;s trendy East Village on Thursday. (March 26) Video provided by AP
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