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A frequency tunable compact 3D folded monopole antenna designed for DVB-H applications is presented. By loading the folded monopole antenna with a variable capacitor, the operating frequency of the antenna can be continuously tuned over the frequency range of the DVB-H standard, from 470 MHz to 862 MHz. Furthermore, a water layer is loaded to reduce the dimensions of the antenna while keeping a reasonable...
In this paper, the effect of the orientation of implantable antennas on their performance inside the body model is studied. The reflection coefficient, gain, radiation efficiency and SAR values are investigated for three different antenna orientations in an asymmetric anatomical body model. It is found that the antenna performance is closely linked to the orientation of the antenna even for the same...
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