Internet of Things energy harvesting Energy harvesting RFID paper substrate rectifier reflection amplifier 5G mobile communication 5G wireless communication systems Backscatter radio CTTC 5G end-to-end experimental platform Chaotic signals Circular Polarization Cloud computing Design optimization Fog computing High peak-to-average power ratio (PAPR) multisine Inkjet printing Inkjet-printed sensors Microstrip antennas Microwave antenna array Noise Patch antennas Poles and zeros RF identification (RFID) sensors RFID-enabled sensor Rectenna Rectennas Resistance compression networks SIW SNR Satellite communications Software Defined Networking (SDN) TEG Wireless power transfer ambient energy harvesting autonomous wireless modules backscatter radio circuits on paper circularly polarized rectenna copper laminate technology flexible radar green electronics increased singal-to-noise ratio (SNR) inkjet printing inkjet-printed electronics millimeter-wave mode-locked coupled oscillators range increase rectenna