Theory and Applications of Broadband Microstrip Antennas

An experimental parametric study of a microstrip antenna is given. This antenna is a flat, broad-folded dipole parallel to and at a short distance from a reflector plane. Radiating characteristics are excellent, and in particular bandwidth is sufficient enough for various applications in spite of a very small antenna thickness. An assimilation to a couple of radiating series strip lines permits to explain the antenna functioning and to refind the experimental results. We take account of radiating resistance and ohmic resistance losses spread allover the strips lengths.