-
[show abstract]
[hide abstract]
ABSTRACT: Because magnetic e#ects haveamuch longer spatial range than electrostatic e#ects, an interconnect line with large inductance will be sensitive to distant variations in interconnect topology. This long range sensitivity makes it di#cult to balance delays in nets like clock trees, so for such nets inductance must be minim ized. In this paper we use two- and threedimensional electromagnetic #eld solv ers to compare dedicated ground planes to a less area-consuming approach, interdigitating the signal line with ground lines. The surprising conclusion is that with very little area penalty,interdigitated ground lines are more e#ective at minimizing self-inductance than ground planes.
08/2002;
-
[show abstract]
[hide abstract]
ABSTRACT: In this paper we present a more accurate method for solving a frequency-dependent inductance of 3-D structures that contains permeable materials. The extracted inductance using the new method is much more accurate than when using the traditional collocation method for no increased cost. Computational results are presented and compared with data to demonstrate the accuracy improvement of the approach.
08/2002;
-
[show abstract]
[hide abstract]
ABSTRACT: In this paper we present an improvement to the fictitious magnetic charge approach to computing inductances in the presence of permeable materials. The improvement replaces integration over a "non-piercing" surface with a line integral and an efficient quadrature scheme. Eliminating the need to generate non-piercing surfaces substantially simplifies handling problems with general geometries of permeable materials. Computational results are presented to demonstrate the accuracy and versatility of the new method.
06/2002;
-
Proceedings of the 2002 IEEE/ACM International Conference on Computer-aided Design, 2002, San Jose, California, USA, November 10-14, 2002; 01/2002
-
[show abstract]
[hide abstract]
ABSTRACT: Manyphysical synthesis tools interdigitate signal and power lines to reduce cross-talk, and thus, improve signal integrity and timing predictability.Such approaches are extremely effective at reducing cross-talk at circuit speeds where inductive effects are inconsequential. In this paper, weuse a detailed distributed RLC model to show that inductive cross-talk effects are substantial in long busses associated with 0.18 micron technology. Simulation experiments are then used to demonstrate that cross-talk in such high speed technologies is much better controlled by re-deploying interdigitated power lines to perform differential signaling.
07/2001;
-
Proceedings of the 38th Design Automation Conference, DAC 2001, Las Vegas, NV, USA, June 18-22, 2001; 01/2001
