POWER RECEPTION DEVICE AND POWER TRANSMISSION DEVICE

PROBLEM TO BE SOLVED: To provide a small portable terminal device loaded with an antenna that receives non-contact communication and non-contact power transmission.SOLUTION: A non-contact power transmission system comprises: a power transmission device 420 for transmitting power in a non-contact manner; and a portable terminal device 702 for receiving power from the power transmission device 420 in a non-contact manner. The portable terminal device 702 comprises a resonance coil 401 and a load coil 402 which magnetically couple with each other, is connected with first resonance capacity 403 which resonates with the electromagnetic induction coil 401 at a first frequency, and is connected with second resonance capacity 405 which resonates with that at a second frequency via a low-pass filter 404, and is provided with a first output terminal. The low-pass filter 404 lets a signal with the second frequency (for example, 100 kHz) pass through, blocks the pass of a signal with the first frequency (for example, 13.56 MHz), and outputs a signal with the second frequency from the first output terminal. The load coil 402 magnetically couples with the electromagnetic induction coil 401 and thereby outputs a signal with the first frequency.SELECTED DRAWING: Figure 8 【課題】非接触通信と非接触による送電を受電するアンテナを搭載した小型の携帯端末装置を提供する。【解決手段】電力を非接触で送電する送電装置４２０と送電装置４２０から非接触で受電する携帯端末装置７０２とから構成され、携帯端末装置７０２は磁気的に結合しあう共振コイル４０１と負荷コイル４０２からなり、電磁誘導コイル４０１と第１の周波数で共振する第１の共振容量４０３を接続し、ローパスフィルタ４０４を介して第２の周波数で共振する第２の共振容量４０５を接続して第１の出力端子を設ける。ローパスフィルタ４０４は第２の周波数の信号（例、１００ｋＨｚ）を通過させ、第１の周波数（例、１３．５６ｍＨｚ）の信号の通過を阻止し、第１の出力端子からは第２の周波数の信号を出力する。負荷コイル４０２は電磁誘導コイル４０１と磁気的に結合することで第１の周波数の信号を出力する。【選択図】図８