PURPOSE: To operate in two frequency bands and to use two orthogonal polarized waves in common by arranging a patch for high band through a dielectric onto a patch for low band so as to make the respective main polarized waves orthogonal.
CONSTITUTION: A dielectric 1b and a patch 6 for high band are formed on a patch 3 for low band and further, this patch 6 for high band is equipped with a through hole 4 for feeding to supply microwaves to the patch 6 for high band. The patch 3 for low band is used in the low frequency band, among two using frequency bands, and the patch 6 for high band is used in the high frequency band. Further, the two main polarized waves of the patch 3 for low band and the patch 6 for high band are made orthogonal. Thus, the array antenna sharing the polarized waves can be realized to be operated as the array antenna commonly used for two frequencies.
ORIME SHINKEI
KATAKI TAKASHI
| JPS6462004A | 1989-03-08 | |||
| JPH01252002A | 1989-10-06 |
| US4926189A | 1990-05-15 |