RADIO RECEIVER, RADIO TRANSMITTER, AND HEARING AID

摘要

A receiver (30) with an antenna circuit is disclosed, which antenna circuit comprises a coil (31) and either a monopole (35) or a dipole connected to the coil (31). The antenna circuit captures a signal with a wavelength transmitted by a transmitter (1). The coil (31) captures the signal and generates therefrom a current having a frequency corresponding to the wavelength. The coil (31) is dimensioned such that the current is distributed uniformly within the coil (31) at each point in time. Preferably, the monopole (35) or a leg of the dipole has a length corresponding to less than 5% of the wavelength. The invention further relates to a radio transmitter of the same kind. Finally, the invention relates to an RFID tag, a smart card, a mobile device, and a hearing aid, each comprising an inventive receiver (30) and/or an inventive transmitter.