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This paper presents two antennas at 434 MHz for neuro motor prosthesis. The implanted antenna consists of a meandered dipole that can be positioned on the head. The external antenna is a high permittivity periodic structure loaded planar dipole antenna which is of low profile and has high directivity. Both the antennas are optimized with the head tissues that are approximated by three homogeneous...
An ultra-thin differential patch antenna is proposed for head implants. Through the proximity coupling between the rectangular patch and the loop structure fed by a differential microstrip line, an antiphase mode is excited, which doubles the bandwidth of an aperture-coupled rectangular patch antenna. Moreover, the directional radiation allows maximum energy to be directed to the receiver and lowers...
This paper presents the design of a wideband differential antenna which is suitable for head implants. The antenna consists of a ground plane beneath the patches and a differential feeding structure, which provides the directional radiation with an ultra-thin design. The antenna is fabricated using LTCC technology with an overall size of 24 × 10 × 0.95 mm3. In order to ensure that the antenna is bio-compatible...
This paper presents the design and performance of an implanted coil antenna for capsule endoscopy and a circularly polarized antenna for an external base station operating at a 915-MHz band (920-925 MHz). The measurement setup for characterizing the transmission characteristics between the external and implant antennas is designed and demonstrated. The data derived from the RF transmission measurements...
This paper discusses the radiation characteristics of the implant antenna which are affected by the presence of the lossy and dispersive tissues in the near-field, the radio link from the implanted antenna to the external antenna, which considers the wave propagation from the implanted antenna through the body into the air and over to the external antenna can be characterized in terms of the RF transmission...
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