Optimal jumper insertion for antenna avoidance under ratio upper-bound

Antenna effect may damage gate oxides during plasma-based fabrication process. The antenna ratio of total exposed antenna area to total gate oxide area is directly related to the amount of damage. Jumper insertion is a common technique applied at routing and post-layout stages to avoid and to fix the problems caused by the antenna effect. This paper presents an optimal algorithm for jumper insertion under the ratio upper-bound. It handles Steiner trees with obstacles. The algorithm is based on dynamic programming while works on free trees. The time complexity is O(|V |2 ) and the space complexity is O(|V |2 ), where |V | is the number of nodes in the routing tree and is a factor depending on how to find a non-blocked position on a wire for a jumper. Categories and Subject Descriptors: J.6 [ComputerAided Engineering]: Computer-Aided Design General Terms: Algorithms

• Type: Conference
• Year: 2006
• Where: DAC
• Authors: Jia Wang, Hai Zhou
• Keywords: Antenna Effect, DAC 2006, Design Automation, Jumper Insertion, Total Exposed Antenna