Title :
On the role of substrate loss tangent in the cavity model theory of microstrip patch antennas
Author :
Kai-Fong Lee ; Chebolu, Siva R. ; Chen, Wei ; Lee, Richard Q.
Author_Institution :
Dept. of Electr. Eng., Toledo Univ., OH, USA
fDate :
1/1/1994 12:00:00 AM
Abstract :
The effective loss tangent (δeff) plays an important role in the improved cavity model of microstrip patch antennas. It is calculated using an iterative procedure. Results are presented here showing that the final value of δeff is quite sensitive to the value chosen at the start of the iterative process, i.e., the substrate loss tangent (tan δ). Since the input impedance depends on δeff, it is important to specify the value of tan δ in any comparison with experiment
Keywords :
antenna theory; dielectric losses; electric impedance; iterative methods; microstrip antennas; cavity model theory; effective loss tangent; input impedance; iterative procedure; microstrip patch antennas; substrate loss tangent; Antennas and propagation; Doppler radar; Electromagnetic scattering; Electrons; Image reconstruction; Microstrip antennas; Patch antennas; Radar imaging; Radar scattering; Tomography;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
