A delay compensation apparatus is provided, where a surface acoustic wave component is used as a main delay component for delay compensation. A size of the surface acoustic wave component is relatively small. Therefore, the delay compensation apparatus provided in embodiments of the present invention features a relatively small size and a relatively high device integration level.

Tunable delay circuit devices have an input port, an output port, at least three parallel paths connecting the input port and the output port, on each path, an input switch and an output switch, and on each path, a plurality of shunt resonant tanks connected between the input switch and the output switch, each shunt resonant tank periodically chargeable from the input port and dischargeable to the output port by operation of the input switch and the output switch.

Tunable delay circuit devices have an input port, an output port, at least three parallel paths connecting the input port and the output port, on each path, an input switch and an output switch, and on each path, a plurality of shunt resonant tanks connected between the input switch and the output switch, each shunt resonant tank periodically chargeable from the input port and dischargeable to the output port by operation of the input switch and the output switch.

Disclosed herein is a tunable diffraction grating using surface acoustic waves. In some embodiments, the tunable diffraction grating includes a piezoelectric substrate including an interdigital transducer (IDT) region and a delay line region; a plurality of IDT electrodes positioned in the IDT region, wherein the IDT electrodes are each individually addressable such that the voltage applied to each of the electrodes is phase shifted, and wherein the IDT electrodes provide the phase shifted voltage to induce surface acoustic waves in the piezoelectric substrate in a pattern which produce a grating in the delay line region. Advantageously, tunable diffraction gratings have many applications including spectrometers for orbiters and rovers to Mars.

A delay compensation apparatus is provided, where a surface acoustic wave component is used as a main delay component for delay compensation. A size of the surface acoustic wave component is relatively small. Therefore, the delay compensation apparatus provided in embodiments of the present invention features a relatively small size and a relatively high device integration level.

Systems and devices for a self-interference cancelation scheme that allows for large numbers of delays while maintaining a small size and area. The main components of this scheme include AE delay line arrays (for re-constructing the interference to be subtracted); AE circulators (for providing isolation between the transmitter-to-antenna and antenna-to-receiver paths); and AE couplers (for tapping the signal from the transmit chain to the delay lines). Together, a fully micro-acoustic interference cancelation module is realized in thin-film piezoelectric-semiconductor heterostructures, which are usable in cellular communication devices, base stations, wireless communication modules, and similar transmission/reception systems.

Disclosed herein is a tunable diffraction grating using surface acoustic waves. In some embodiments, the tunable diffraction grating includes a piezoelectric substrate including an interdigital transducer (IDT) region and a delay line region; a plurality of IDT electrodes positioned in the IDT region, wherein the IDT electrodes are each individually addressable such that the voltage applied to each of the electrodes is phase shifted, and wherein the IDT electrodes provide the phase shifted voltage to induce surface acoustic waves in the piezoelectric substrate in a pattern which produce a grating in the delay line region. Advantageously, tunable diffraction gratings have many applications including spectrometers for orbiters and rovers to Mars.