Reconfigurable multi-slot antenna for bio-medical applications

Publisher:
IEEE
Publication Type:
Conference Proceeding
Citation:
2016 10th European Conference on Antennas and Propagation, EuCAP 2016, 2016, pp. 1 - 4
Issue Date:
2016-05-31
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© 2016 European Association of Antennas and Propagation.We present a polarization- reconfigurable multislot antenna with four switchable linear polarizations (as 0°, ± 45° and 90°) for implant communications. The design is based on four bow-tie shaped slots acting as radiators etched on a circular metallization plane with 45° rotated sequential arrangements. RF switches based on PIN diodes are connected across each slot in order to modify the radiators polarization. We apply a differential source to feed the slot antenna through a ground-tapered Balun. In order to obtain a broadside radiation pattern, a reflector is placed at the quarter-wave distance below the radiator. Measured results are showing that the realized multi-slot antenna can generate four switchable linear polarization states with wide bandwidth and stable gain. This polarization diversity feature makes the proposed antenna highly attractive for implant and body-centric wireless communication systems for minimizing the multi-path distortion and polarization mismatching in the wireless channels.
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