Radiation effects which may degrade integrated circuit performance significantly make it challengeable for IC designer to design circuits using commercial CMOS process for aerospace applications in old days. However, thanks to the fast development of commercial CMOS technology, nowadays, deep submicron devices with ultra thin silicon oxide have got intrinsic hardness towards radiation effects. With the help of Radiation Hardened by Design (RHBD) approach, circuit which is robust to radiation environment can be implemented using commercial deep submicron CMOS process.Bachelor of Engineerin