Broadband Microwave Antenna for Imaging and Sensing in Biomedical Applications

Thanks to their operation band, broadband an-tennas demonstrate applicability and versatility in biomedical sensing and imaging. This work presents the numerical validation of a microwave broadband monopole antenna aimed for work in close proximity to biological tissues, such as the human head. An iterative design starting from an elliptical patch antenna reduces geometry dimensions and enhances bandwidth efficiency. The final design achieves a compact 48×38mm antenna with a dielectrically custom-made 3 mm-thickness matching layer covering a -10 dB frequency band from 1 to 6GHz, which is assessed on top of a simplified multilayer head phantom.