Small plane antenna and composite antenna using the same

A composite antenna is formed by combining a circularly-polarized-wave antenna and a vertically-polarized-wave antenna, is suitable for thin and small structure. The composite antenna includes a printed circuit board to which a terrestrial-wave plane antenna as the vertically-polarized-wave antenna is fixed. A satellite-wave patch antenna as the circularly-polarized-wave antenna is fixed to a metal plate of the plane antenna. A power-supply pin of the patch antenna is connected to the power-supply line of a coaxial cable by using an opening of the plane antenna. Circumferentially relative positional relationship between the metal plate and a patch electrode of the patch antenna is set to be almost uniform.