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We analytically investigate the possibility of simultaneously suppressing intensity and phase noise during phase sensitive amplification using four-wave mixing in a semiconductor optical amplifier. The results show a significant improvement in the error vector magnitude.
Recently, Radio Frequency Identification (RFID) systems have been widely developed. The wristband type RFID tag is one of the applications for personal identification. In this case, since the RFID antenna is in the vicinity of a human, the human body affects the antenna characteristics. Therefore, the analyses of the performances of the RFID antenna are required. In this paper, the antenna inside...
Characteristics of antennas and propagation channels in on-body communications have been ascertained. Earlier studies indicated that not only maximization of path loss between body-mounted devises by use of monopole-like antennas but also countermeasures against fading by use of multi polarization antennas may be an important issue. Multi polarization can be obtained by perturbing the patch antennas...
Implantable devices have been investigated with great interest as communication tools. These implantable devices are embedded into the human or pet body. The vital information (such as temperature, blood pressure, cardiac beat, etc.) can be transmitted from implantable devices to the external equipment by use of a wireless communication link. Therefore, the research on the antenna for implantable...
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