ANTENNA DEVICE AND ELECTRONIC APPARATUS

摘要

A first radiating electrode (10) is formed on the lower face of a ground conductor non-forming region (NGA) of a substrate (1), and second radiating electrodes (21, 22) are formed on the upper face of the ground conductor non-forming region (NGA). A vertical electrode (12) of the first radiating electrode (10) communicates with a ground conductor (2). A first terminal (13) and a second terminal (14) of a lateral electrode (11) of the first radiating electrode (10) extend in a direction which approaches the ground conductor (2). The lateral electrode (11) of the first radiating electrode (10) acts as a radiating element which radiates a signal of a first frequency. The second radiating electrodes (21, 22) act as radiating elements which radiate a signal of a second frequency, and as capacitive feed electrodes with respect to the first radiating electrode (10). It is thus possible to increase directionality to an antenna part side (forepart) of a substrate, and to allow multiband communication.