The radiation from rectangular microstrip antennas mounted on two-dimensional objects

The radiation patterns for a quadratic microstrip antenna mounted on two-dimensional objects, the circular cylinder and the strip, have been calculated using both the transmission-line model and the resonator model. Analytical expressions for the far field are presented, and calculations are compared with measurements. All measurements clearly indicate that the resonator model is better than the transmission-line model in radiation pattern calculations outside the principal planes of the antenna.