Photonic Crystal at Millimeter Waves Applications

Abstract

The photonic band gap (PBG) crystals have been used as a perfectly re∞ecting substrate for many millimeter wave applications. In his work the fln line directional coupler with PBG substrate was analyzed using the TTL | Transverse Transmission Line | method. Comparing with the other full wave methods the TTL is e-cient, making possible a signiflcant algebraic simpliflcation of the equations involved in the process. In order to analyze the structure the coupling were determined. Numerical results obtained for this flnline coupler are presented.