A new approach to the placement and routing design for MCM;

Design and transmission characteristics simulation in MCM placement and routing;

VDSM interconnect characteristics and the place and route optimization;

Secondly, the place and route and verification of the digital circuit is discussed in detail.

We build the final layout file after the design flows such as floorplan,place and route by using Astro which is the place and route tools of Synopsys.

One of the key points in the structure design of airborne SAR antenna and gyro-stabilized platform is the antenna layout design,which is complicated and difficult to be optimized because of the irregular shape and space envelope of radome.

This paper presents efficient algorithms of total length linear layout graph problem of interal weighted outer planar graph, specially, the parallel algorithm of this problem, whose complexity is O( log 2n) on O(δn 2) processors under CREW-PRAM parallel computing model.