A novel fault-tolerance design model for automatic synthesis of circuit robust to unknown fault

Analog circuits are indispensable in many electronic system design, as fundament. Considering accuracy and stability of circuit, fault-tolerance design is of great significance. For the lack of automatic design of fault-tolerant analog circuit robust to unknown fault, this paper presents a fault-tolerance design process with two steps: standard design and fault-tolerant design. A novel fault-tolerance design model and three fault-models are proposed. An Ultra-Wideband Highpass Filter satisfying RF design specification is designed as a case study. Experimental results shows that, the tolerant-circuit performs relatively robust compared with Butterworth highpass filter and standard-design circuit. The two-steps fault-tolerance design process is successfully used to design fault-tolerant analog circuit robust unknown fault.