Despite the prevalence of GPS services, they still suffer from intermittent positioning with
poor accuracy in partially shadowed regions like urban canyons, flyover shadows, and …

It all started with a spark. Let us rewind back to 1887, in Germany. The days were getting
cooler in the garden of the Technische Hochschule in Karlsruhe as Heinrich Rudolf Hertz …

The highly power-efficient backscattering communication scheme holds solid potentials to
lead the Internet of Things technologies. However, the asymmetric radio frontend …

This work proposes to enlarge the maximum readout distance of battery-free harmonic
transponders through a careful Schottky diode selection and a consideration of low …

This paper describes an ultrahigh frequency (UHF) tag antenna mounted on a metallic plate
for radio frequency identification (RFID). The impedance of the proposed antenna can be …

Harmonic transponder sensors, receiving radio-frequency (RF) signal and converting it to a
modulated second harmonic, have been demonstrated to be effective for signal interrogation …

The recently introduced Zero-IF self-oscillating mixers (SOMs) enable a direct frequency
conversion, of interest for the implementation of compact and low consumption radio …

Hardware tag characterization is one of the most critical steps in RFID and zeropower IoT
development flow. However, the measurement process and its respective setup can be long …

We propose a new dual‐band passive RFID tag antenna design by combining a rectangular
spiral coil and patch‐meander‐line dipole with an interconnected structure. This design …

Next generation of wireless sensors networks is poised to operate at zero-power. To reach
this goal while operating over long range, there is a need for ultra-efficient RF transmitter …