PURPOSE: To efficiently arrange an antenna and to increase the gain of a received radio wave by arranging a rectangular antenna element for low frequency and that for high frequency on the inside and the outside respectively.
CONSTITUTION: A rectangular antenna element 1 for low frequency and a rectangular antenna element 2 for high frequency are arranged on the inside and the outside respectively by painting a conductive paint or sticking a conductive tape on the surface of a sheet material 3. A pair of feeders 9 are connected to middle parts of longer side parts 5 facing each other of the element 1 and those of longer side parts 7 facing each other of the element 2 and project inward and are used as feeders common to elements 1 and 2. A connector 10 is connected to inner end parts of feeders 9, and elements 1 and 2 are connected to a receiver through the connector 10 and feeders 9.
TAKERA HIROSHI
SUEYOSHI YASUNORI
MIZOGUCHI TAKAHIRO
NIIMI YASUSHI
