Y. Murakami et al., STUDY ON MUTUAL COUPLING BETWEEN 2 PORTS OF DUAL SLOT-COUPLED CIRCULAR MICROSTRIP ANTENNAS, IEICE transactions on communications, E77B(6), 1994, pp. 815-822
This paper theoretically and experimentally investigates the mutual co
upling between two ports of dual slot-coupled circular microstrip ante
nnas. Presented are the effects of feed configuration, slot length, sl
ot offset from the circular disk center, circular disk radius and the
dielectric constant of the feed substrate on the mutual coupling. Base
d on these results, the antenna with low mutual coupling was designed.
The mutual coupling of under -35 dB at the resonant frequency was obt
ained.