ANTENNA FOR PORTABLE RADIO

摘要

PROBLEM TO BE SOLVED: To make an antenna into wideband, to raise antenna gain and to avoid increase in size and costs of a device.

SOLUTION: A parasitic element 216 integrated with a conductive heat dissipating sheet is arranged at a position separated from and opposite to the width direction of a third power supply part 214, grounded to GND of a lower case bottom board 204a, wider bandwidth is attained and the antenna gain is raised by coupling between a third antenna element 215 and the parasitic element at an open end.

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