| 摘要 |
Disclosed are an antenna provided with a resonant frequency control circuit and having a design which suppresses emission (reradiation) of harmonic signals generated when the antenna receives radio waves from the outside, and a wireless communication apparatus provided with the same. A first radiating electrode (21) and a second radiating electrode (22) are provided with comb sections (COM) which generate capacitance by facing each other. If emissions of transmission radio waves from a different antenna near the antenna (101) are received, a portion will be emitted to the antenna (101), and harmonic signals will be generated by a variable capacitance element inside the resonant frequency control circuit (31). However, an LC resonant circuit (tank circuit) is formed by the inductance component of the first radiating electrode (21) and second radiating electrode (22) and the capacitance component generated at the comb sections (COM), so even if emissions from the different antenna are received, the radio waves of the basic mode are confined by the resonant frequency of the LC resonant circuit, and harmonic reradiation (spurious emission) power is reduced. |
