A Multi-modulation Retrodirective Feed Network for Backscatter Communications
Mohammad Alhassoun, Francesco Amato, Gregory D. Durgin
2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
This paper presents a new device for implementing a retrodirective backscatter modulator — an antenna + RF structure that reflects microwaves back to their source, while also adding information. The technique is extremely flexible and low-power, although only practical at microwave bands when the wavelength becomes several centimeters or shorter.