Simple Expression of Antenna Coupling by Using a Product of Radiation Patterns

Hiroaki MIYASHITA  Isamu CHIBA  Shuji URASAKI  Shoichiro FUKAO  

IEICE TRANSACTIONS on Communications   Vol.E82-B   No.11   pp.1867-1873
Publication Date: 1999/11/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antennas and Propagation
approximate formula,  far-field approximations,  antenna mutual couplings,  mutual impedances,  mutual admittances,  reaction integrals,  wedge diffractions,  GTD,  

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Simple approximate formulas are obtained for the mutual impedance and admittance by using a product of radiation patterns of antennas. The formulas come from a stationary expression of the reaction integral between two antennas where far-field approximations are employed. The theory deals with antennas in free space as well as under the presence of a wedge. Two applications are given for microstrip antennas with experimental verifications.