ANALYSIS OF DEFORMED MICROSTRIP RESONATOR USING THE FINITE-ELEMENT METHOD

Microstrip resonator with shape deformation has been analysed using th e finite element method (FEM). Keeping the front surface of the micros trip resonator fixed, the back surface is deformed. Five cases of the deformation of the back surface are considered: (i) the left vertical side of the back surface is shifted inward; (ii) both vertical sides o f the back surface are shifted inward; (iii) the right vertical side o f the back surface is shifted outward; (iv) both vertical sides of the back surface are shifted outward; (v) left vertical side of back surf ace is shifted inward and the right vertical side of it is shifted out ward. Variation in cutoff frequency for the TM011, TM110, TM111, TM012 , TM112 and TM210 is observed.