US 12,217,890 B2
Subwavelength antennas, drivers, and systems
Supriyo Bandyopadhyay, Richmond, VA (US)
Assigned to Virginia Commonwealth University, Richmond, VA (US)
Appl. No. 17/440,974
Filed by VIRGINIA COMMONWEALTH UNIVERSITY, Richmond, VA (US)
PCT Filed Mar. 20, 2020, PCT No. PCT/US2020/023941
§ 371(c)(1), (2) Date Sep. 20, 2021,
PCT Pub. No. WO2020/191327, PCT Pub. Date Sep. 24, 2020.
Claims priority of provisional application 62/830,604, filed on Apr. 8, 2019.
Claims priority of provisional application 62/821,633, filed on Mar. 21, 2019.
Prior Publication US 2022/0165468 A1, May 26, 2022
Int. Cl. H01F 10/32 (2006.01); H01P 3/08 (2006.01); H03H 9/25 (2006.01); H04L 27/12 (2006.01); H04M 1/03 (2006.01); B82Y 25/00 (2011.01)
CPC H01F 10/324 (2013.01) [H01P 3/081 (2013.01); H03H 9/25 (2013.01); H04L 27/12 (2013.01); H04M 1/03 (2013.01); B82Y 25/00 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A subwavelength electromagnetic antenna, comprising
a piezoelectric substrate;
an array of magnetostrictive nanomagnets in elastic contact with the piezoelectric substrate; and
a driver configured to actuate the array by causing magnetization oscillations in the magnetostrictive nanomagnets using surface acoustic waves (SAWs) launched in the piezoelectric substrate, wherein the driver is configured to change SAW frequencies to cause the array to radiate electromagnetic waves at multiple frequencies that match the SAW frequencies up to a predetermined limit,
wherein the array of magnetostrictive nanomagnets is configured to (i) convert phonons of the SAWs to magnons via phonon-magnon coupling and (ii) convert the magnons to photons of the electromagnetic waves via magnon-photon coupling.