Design of a Circularly Polarized Implantable Monopole Antenna for Biomedical Application
Abstract
A circularly polarized monopole antenna has been proposed in this paper for implantable biomedical application. The monopole antenna is designed as an inverted ‘Y’ structure with unequal arm lengths (L1 and L2). The inverted ‘Y’ structure helps to achieve compactness and the difference in length between two arms causes the circular polarization (CP). This proposed antenna has been fed with co-planar waveguide (CPW) and it shows the near omnidirectional radiation pattern with gain of -6 dB at 2.45 GHz operating frequency. 4.41% axial ratio bandwidth defines the circular polarization property of the antenna. Specific absorption rate for a single layered human skin model is also obtained.
References
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