Return Loss and Mutual Coupling Cofficient of a Microstrip Printed Antenna Array Conformed on a Cylindrical Body for TM 01 Mode

Curvature has a great effect on fringing field of a microstrip antenna and consequently fringing field affects effective dielectric constant and then all antenna parameters. A new mathematical model for return loss and mutual coupling coefficient as a function of curvature for two element array antenna is introduced in this paper. These parameters are given for TM01 mode and using three different substrate materials RT/duroid-5880 PTFE, K-6098 Teflon/Glass and Epsilam-10 ceramic-filled Teflon.