Title :
Full-wave analysis of aperture-coupled microstrip lines
Author :
Herscovici, Naftali ; Pozar, David M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA
fDate :
7/1/1991 12:00:00 AM
Abstract :
Two methods are presented for the analysis of aperture-coupled microstrip lines. Assuming a quasi-transverse electromagnetic traveling wave incident on the feeding line, an expression for the wave on the coupled line is derived. First, the moment method is used and the current on the coupled line is represented by a traveling wave propagating away from the slot. In the second method, the reciprocity theorem is applied to the coupled line. Both the moment method and the reciprocity method make use of the exact Green functions and produce results that are in very close agreement. An equivalent circuit is derived and the S-parameters are computed. Theoretical results are verified with measurements
Keywords :
coupled circuits; strip lines; transmission line theory; S-parameters; aperture-coupled microstrip lines; equivalent circuit; exact Green functions; full-wave analysis; measurements; moment method; quasi transverse EM wave; reciprocity method; reciprocity theorem; Apertures; Coupling circuits; Equivalent circuits; Feeds; Geometry; Integral equations; Microstrip components; Moment methods; Planar arrays; Scattering parameters;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
