Dispersive delay lines are disclosed. The dispersive delay line can include a piezoelectric substrate having a first interdigital transducer electrode on a first region of the piezoelectric substrate and a second interdigital transducer electrode on a second region of the piezoelectric substrate. The dispersive delay line is arranged such that an acoustic wave is configured to propagate from the first interdigital transducer electrode to the second interdigital transducer electrode though a third region of the piezoelectric substrate. An additional material positioned on the third region of the piezoelectric substrate can impact acoustic wave propagation velocity. Related radio frequency modules, wireless communications devices, and methods are disclosed.

Dispersive delay lines are disclosed. The dispersive delay line can include a piezoelectric substrate having a first interdigital transducer electrode on a first region of the piezoelectric substrate and a second interdigital transducer electrode on a second region of the piezoelectric substrate. The dispersive delay line is arranged such that an acoustic wave is configured to propagate from the first interdigital transducer electrode to the second interdigital transducer electrode though a third region of the piezoelectric substrate. An additional material positioned on the third region of the piezoelectric substrate can impact acoustic wave propagation velocity. Related radio frequency modules, wireless communications devices, and methods are disclosed.

Dispersive delay lines are disclosed. The dispersive delay line can include a piezoelectric substrate having a first interdigital transducer electrode on a first region of the piezoelectric substrate and a second interdigital transducer electrode on a second region of the piezoelectric substrate. The dispersive delay line is arranged such that a Lamb wave is configured to propagate from the first interdigital transducer electrode to the second interdigital transducer electrode though a third region of the piezoelectric substrate. The Lamb wave has a group delay that depends on frequency. Related radio frequency modules, wireless communications devices, and methods are disclosed.

Dispersive delay lines are disclosed. A dispersive delay line can include a piezoelectric substrate having a first interdigital transducer electrode on a first region of the piezoelectric substrate and a second interdigital transducer electrode on a second region of the piezoelectric substrate. The dispersive delay line is arranged such that an acoustic wave is configured to propagate from the first interdigital transducer electrode to the second interdigital transducer electrode though a third region of the piezoelectric substrate. The third region of the piezoelectric substrate is configured as a waveguide and can have a thickness of less than half the wavelength of the acoustic wave. Related radio frequency modules, wireless communications devices, and methods are disclosed.

An on-chip acoustic delay line (ADL) for operation in the radio frequency (RF) range uses a two-dimensional array of resonant rods and a piezoelectric layer having corrugated structure. The ADL has one or more programmable passband frequencies which are determined by the lithographically-defined artificial dispersive characteristics of acoustic metamaterials formed by forests of the locally resonant rods and selectable attached matching networks. The ADL devices offer exceptionally high fractional bandwidth and low insertion loss. The ADL can be used in self-interference cancellation networks to provide full duplex radio.

An on-chip acoustic delay line (ADL) for operation in the radio frequency (RF) range uses a two-dimensional array of resonant rods and a piezoelectric layer having corrugated structure. The ADL has one or more programmable passband frequencies which are determined by the lithographically-defined artificial dispersive characteristics of acoustic metamaterials formed by forests of the locally resonant rods and selectable attached matching networks. The ADL devices offer exceptionally high fractional bandwidth and low insertion loss. The ADL can be used in self-interference cancellation networks to provide full duplex radio.

Dispersive delay lines are disclosed. The dispersive delay line can include a piezoelectric substrate having a first interdigital transducer electrode on a first region of the piezoelectric substrate and a second interdigital transducer electrode on a second region of the piezoelectric substrate. The dispersive delay line is arranged such that an acoustic wave is configured to propagate from the first interdigital transducer electrode to the second interdigital transducer electrode though a third region of the piezoelectric substrate. An additional material positioned on the third region of the piezoelectric substrate can impact acoustic wave propagation velocity. Related radio frequency modules, wireless communications devices, and methods are disclosed.

Dispersive delay lines are disclosed. The dispersive delay line can include a piezoelectric substrate having a first interdigital transducer electrode on a first region of the piezoelectric substrate and a second interdigital transducer electrode on a second region of the piezoelectric substrate. The dispersive delay line is arranged such that an acoustic wave is configured to propagate from the first interdigital transducer electrode to the second interdigital transducer electrode though a third region of the piezoelectric substrate. An additional material positioned on the third region of the piezoelectric substrate can impact acoustic wave propagation velocity. Related radio frequency modules, wireless communications devices, and methods are disclosed.

Dispersive delay lines are disclosed. A dispersive delay line can include a piezoelectric substrate having a first interdigital transducer electrode on a first region of the piezoelectric substrate and a second interdigital transducer electrode on a second region of the piezoelectric substrate. The dispersive delay line is arranged such that an acoustic wave is configured to propagate from the first interdigital transducer electrode to the second interdigital transducer electrode though a third region of the piezoelectric substrate. The third region of the piezoelectric substrate is configured as a waveguide and can have a thickness of less than half the wavelength of the acoustic wave. Related radio frequency modules, wireless communications devices, and methods are disclosed.

Dispersive delay lines are disclosed. A dispersive delay line can include a piezoelectric substrate having a first interdigital transducer electrode on a first region of the piezoelectric substrate and a second interdigital transducer electrode on a second region of the piezoelectric substrate. The dispersive delay line is arranged such that an acoustic wave is configured to propagate from the first interdigital transducer electrode to the second interdigital transducer electrode though a third region of the piezoelectric substrate. The third region of the piezoelectric substrate is configured as a waveguide and can have a thickness of less than half the wavelength of the acoustic wave. Related radio frequency modules, wireless communications devices, and methods are disclosed.