Multiband Broadcast Energy Harvesting Antenna

A broadband monocone antenna on a circular ground plane is presented for the application of multiband broadcast energy harvesting. The targeted broadcast bands include Amplitude-Modulated (AM) radio in the medium frequency range, frequency-modulated (FM) radio in the very high frequency range, and television signals in the Ultra High Frequency (UHF) range. The antenna matching in each band is facilitated by using a front-end triplex circuit. The antenna also has the potential to harvest energy from the cellular and WLAN bands. Simulation results show that better than −10 dB impedance matching is achieved across the FM and UHF bands while supporting a narrowband match across selected channels in the AM band.