PATENTS

A. Erbes and V. Yantchev, "Surface Acoustic Wave Device  With Reduced Spurious Modes", WO/2023/011716 A1, February 9, 2023 

V. Yantchev, "XBAR devices with excess piezoelectric material removed", United States Patent 11496113, November 8, 2022

V. Yantchev, "Transversely-excited film bulk acoustic resonators with structures to reduce acoustic energy leakage", United States Patent 11405020, August 2022 

V. Yantchev, "Filter using transversely-excited film bulk acoustic resonators with divided frequency-setting dielectric layers", United States Patent 11374549, June 28, 2022

V. Yantchev, "Symmetric transversely-excited film bulk acoustic resonators with reduced spurious modes", United States Patent 11349450, May 31, 2022

V. Yantchev, "Transversely-excited film bulk acoustic resonator with periodic etched holes", United States Patent 11323096, May 2022

V. Yantchev, "Transversely-excited film bulk acoustic resonator with tether-supported diaphragm", United States Patent 11271540, March 2022

A, Kay, V. Yantchev, P. Turner, "Transversely-excited film bulk acoustic resonator with diaphragm support pedestals", United States Patent 11323091, May 2022

V. Plesski, D. Nenov, V. Yantchev, R. Hammond, "Film bulk acoustic sensors using thin LN-LT layer", United States Patent 11329625, May 2022

A. Jesorka, K. Kustanovich, V. Yantchev, "Surface acoustic wave resonant sensor", United States Patent 11243189, February 2022

V. Yantchev, "Solidly-mounted transversely-excited film bulk acoustic resonator with diamond layers in Bragg reflector stack",   United States Patent 11264966, March 2022

G. Dyer, V. Plesski, S. Yandrapalli, R. Hammond, B. Garcia, P. Turner, J. John, V. Yantchev, "Transversely-excited film bulk acoustic resonator with a cavity having a curved perimeter", United States Patent 11228296, January 2022

V. Yantchev, "Transversely-excited film bulk acoustic resonator with interdigital transducer with varied mark and pitch", United States Patent 11206009, December 2021

V. Yantchev, P. Turner, R. B. Hammond, "Transversely-excited film bulk acoustic resonator with multiple diaphragm thicknesses and fabrication method", United States Patent 11201601, December 2021

 V. Yantchev, B. Garcia, V. Plesski, S. Yandrapalli, R. Hammond, P. Turner, J. Jesson, “Solidly-mounted transversely-excited film bulk acoustic resonator”, United States Patent 11165407, November 2021

V. Yantchev, V. Plesski, B. Garcia, “Solidly-mounted transversely excited film bulk acoustic resonator using rotated Y-X cut lithium niobate”, United States Patent 11146244, October 2021

R. Hammond, P. Turner, V. Yantchev, “Film bulk acoustic resonator fabrication method”, United States Patent 11146238, October 2021

S. Yandrapalli, V. Plesski, J. Koskela, V. Yantchev, P. Turner, "Transversely-excited film bulk acoustic resonator with reduced spurious modes", United States Patent 11146232, October 2021

 V. Plesski, S. Yandrapalli, J. Koskela, V. Yantchev,” Passive microphone/pressure sensor using a piezoelectric diaphragm “, United States Patent 11143561, October 2021

V. Plesski, S. Yandrapalli, R. Hammond, B. Garcia, P. Turner, J. John, V. Yantchev, “Transversely-excited film bulk acoustic resonator”, United States Patent 11139794, October 2021

B. Garcia, R. Hammond, P. Turner, N. Fenzi, V. Plesski, V. Yantchev, ” Transversely-excited film bulk acoustic resonators for high power applications”, United States Patent 11114998, September 2021

V. Yantchev, P. Turner, V. Plesski, J. Koskela, R.Hammond, “XBAR resonators with non-rectangular diaphragms”, United States Patent 10998882, May 2021

 P. Turner, V. Yantchev, R. Hammond, “Film bulk acoustic resonator fabrication method with frequency trimming based on electric measurements prior to cavity etch”, United States Patent 10998877, May 2021

V. Yantchev, “Filter using transversely-excited film bulk acoustic resonators with multiple frequency setting layers”, United States Patent 10992284, April 2021

V. Plesski, B. Garcia, R. Hammond, P. Turner, N. Fenzi, V. Yantchev, "High power transversely-excited film bulk acoustic resonators on rotated Z-cut lithium niobate", United States Patent 10992283, April 2021

B. Garcia, R. Hammond, P. Turner, N. Fenzi, V. Plesski, V. Yantchev, "Filter devices having high power transversely-excited film bulk acoustic resonators", United States Patent 10985730, April 2021

 V. Plesski, S. Yandrapalli, R. Hammond, B. Garcia, P. Turner, J. John, V. Yantchev, “Bandpass filter with frequency separation between shunt and series resonators set by dielectric layer thickness”, United States Patent 10917070, February 2021

V. Yantchev, “Transversely-excited film bulk acoustic filters with symmetric layout”, United States Patent 10868513, December 2020

V. Yantchev, “Transversely-excited film bulk acoustic resonator with half-lambda dielectric layer”, United States Patent 10868510, December 2020

S. Mchugh, P. Turner, V. Yantchev, F. Iliev,,“Temperature compensated acoustic wave devices”, United States Patent 10840876, November 2020

V. Yantchev, V. Plesski, B. Garcia, ”Transversely excited film bulk acoustic resonator using rotated Y-X cut lithium niobate”, United States Patent 10790802, September 2020