ANTENNA AND WIRELESS COMMUNICATION DEVICE

摘要

An antenna (101) is equipped with an antenna element (1) fabricated by forming a prescribed electrode against a dielectric substrate (10), and with a base plate (2) fabricated by forming a prescribed electrode against a base material (20). A feed terminal connection electrode to which a feed terminal formed on the underside of the antenna element (1) is connected, an external terminal connection electrode to which an external electrode is connected, and a grounding terminal connection electrode to which a grounding terminal formed on the underside of the antenna element (1) is connected are formed on the top surface of an ungrounded area (UA) of the base plate (2). Chip inductors are mounted between the external terminal connection electrode and the feed terminal connection electrode, and between the external terminal connection electrode and the grounding terminal connection electrode. The electrical length of the radiation electrode is shortened by shortcutting the current path created by the chip inductors, and the resonant frequency in fundamental wave mode is determined independently of the resonant frequency in high-harmonic mode.