Patent ID: 8816920

Claim:
A mobile electronic device comprising: a housing; a first antenna section that is arranged in the housing, and sends and receives signals on a first useful frequency band; a second antenna section that is arranged in the housing, and sends and receives signals on a second useful frequency band that is a higher frequency band than the first useful frequency band; an adjustment section that adjusts a resonance frequency of the first antenna section; and a control section that identifies a reactance value of the first antenna section based on a receiving sensitivity with respect to the signals on the first useful frequency band, and adjusts, by the adjustment section, the resonance frequency of the first antenna section based on the identified reactance value such that a high-order resonance frequency of the first antenna section is spaced apart from the second useful frequency band in cases in which the receiving sensitivity falls below a predetermined value when the second antenna section receives a signal on the second useful frequency band.