Title :
Characteristics of space and surface waves in a multilayered structure [microstrip antennas]
Author :
Bhattacharyya, Arun K.
Author_Institution :
Dept. of Electr. Eng. Saskatchewan Univ., Saskatoon, Sask., Canada
fDate :
8/1/1990 12:00:00 AM
Abstract :
Characteristics of space- and surface-wave fields produced by an electromagnetic source in a multilayered structure are explored. Using the integral transformation technique it is shown that the space and surface-wave modes are orthogonal along the longitudinal direction with respect to an appropriate weighting function. It is demonstrated that these properties, together with reciprocity, can be utilized to determine the amplitudes of various surface-wave modes produced by an arbitrarily shaped source. Numerical results for the space- and surface-wave power for a circular patch antenna are presented. The study may find application for millimeter-wave printed antennas where the surface waves will play an important role in determining the radiation and impedance characteristics
Keywords :
antenna theory; microstrip antennas; Hertzian magnetic dipole; arbitrarily shaped source; circular patch antenna; electromagnetic source; impedance characteristics; integral transformation technique; microstrip antennas; millimeter-wave printed antennas; multilayered structure; radiation characteristics; space waves; surface waves; weighting function; Dielectric losses; Directive antennas; Electromagnetic fields; Electromagnetic radiation; Microstrip antennas; Millimeter wave technology; Patch antennas; Surface impedance; Surface resistance; Surface waves;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
