Cordless batteryless wheel mouse application utilizing radio requestable SAW devices in combination with the giant magneto-impedance effect

Valve-like behavior of the magnetoimpedance in the GHz range

“…This makes the MI effect very useful to design microwave composites with tunable properties and tunable band gap structure [4,5]. It can also be used for designing a new type of high-frequency transponders in radio-frequency identification (RFID) systems [6].…”

Wireless neural probes based on one-port SAW delay line and neural firing-dependent varicap diode

“…The one-port SAW delay line is consisted of inter-digital transducers (IDTs) connected to an antenna, shorted-grating reflector as reference, and split-type reflectors connected with varicap diode C load , which makes wireless and battery-free measurement system possible. A change in the voltage-controlled capacitance C load by electrical neural pulses induces perturbation of the reflected responses at split-type reflector on one-port SAW delay line as follows [20][21][22][23][24],…”

Magnetoimpedance in amorphous wires and multifunctional applications: from sensors to tunable artificial microwave materials

“…The field sensitivity of the impedance in wires with a circumferential anisotropy remains very high at radio frequencies and even in the GHz range [11][12][13], which leads to new physical effects and applications. Thus, surface acoustic wave devices combined with MI wires as loading impedances can be used for wireless identification systems [14,15]. The combination of microwave properties of wires with electrodynamic behavior of wire-composite materials is foreseen as resulting in completely new effects such as magnetic field-dependent dielectric response [16,17].…”