| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized circularly polarized wave patch antenna that has a broad frequency band of an axial ratio, can be surface-mounted, has low mount cost and provides ease of impedance adjustment. SOLUTION: In this circularly polarized wave patch antenna, a patch element is formed on the surface of a base plate, a GND conductor is formed on the rear side of the base plate, two feeding conductors are capacitively coupled or resonance-coupled with the patch element at a cross point between each of two center lines of the patch element orthogonal to each other and an edge of the patch element, and two feeding terminals used to feed power to the two feeding conductors are formed on the side faces of the base plate.
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