Ultra-wideband printed-circuit array antenna for medical monitoring applications

A new ultra-wideband printed-circuit antenna structure for medical monitoring purpose is introduced. It consists of one single transmitting antenna and an array of receiving antennas in coplanar waveguide technology. In the transmit mode, the frequency of operation is between 3.4 GHz to 5.9 GHz. The receiving antenna array operates from 3.5 GHz to 4.8 GHz. Both bands show an input return loss better than 10 dB. Radiation patterns for both transmitting antenna and receiving array are presented at selected frequencies. The analysis method is verified against previous measurements.