US 11,791,566 B2
Extremely electrically small antennas based on multiferroic materials
Abdon E. Sepulveda, Los Angeles, CA (US); Gregory P. Carman, Los Angeles, CA (US); Jinzhao Hu, Los Angeles, CA (US); Joseph Devin Schneider, Los Angeles, CA (US); Elmer Wu, Rowland Heights, CA (US); Zhi Yao, Los Angeles, CA (US); Sidhant Tiwari, Riverside, CA (US); and Wenzhong Yan, Los Angeles, CA (US)
Assigned to THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US)
Filed by THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US)
Filed on Feb. 4, 2021, as Appl. No. 17/168,048.
Application 17/168,048 is a continuation of application No. PCT/US2019/045865, filed on Aug. 9, 2019.
Claims priority of provisional application 62/880,513, filed on Jul. 30, 2019.
Claims priority of provisional application 62/716,936, filed on Aug. 9, 2018.
Prior Publication US 2021/0242606 A1, Aug. 5, 2021
Int. Cl. H01Q 3/44 (2006.01); H01Q 21/06 (2006.01); H03H 9/22 (2006.01)
CPC H01Q 21/067 (2013.01) [H01Q 3/44 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A multiferroic radio frequency antenna apparatus, comprising:
a piezoelectric substrate;
at least one pair of electrodes coupled to said piezoelectric substrate; and
a plurality of magnetoelastic and/or magnetostrictive resonators coupled to said piezoelectric substrate;
wherein said electrodes in combination with piezoelectric substrate convert between radio frequency electrical signals input at the electrodes to mechanical waves in the piezoelectric substrate, or from mechanical waves in the piezoelectric substrate to radio frequency electrical signal from the electrodes;
wherein said magnetoelastic and/or magnetostrictive resonators in combination with said piezoelectric substrate convert between radio frequency electromagnetic waves input at said magnetoelastic and/or magnetostrictive resonators to mechanical waves in said piezoelectric substrate, or from mechanical waves in said piezoelectric substrate to radio frequency electromagnetic waves from said magnetoelastic and/or magnetostrictive resonators;
wherein said antenna apparatus performs reception in response to converting radio frequency electromagnetic radiation into radio frequency electrical signals, and performs transmission in response to converting radio frequency electrical signals into radio frequency electromagnetic radiation; and
wherein dynamic magnetic flux current oscillations in said plurality of magnetoelastic and/or magnetostrictive resonators are used as a fundamental source for detecting or radiating radio frequency electromagnetic waves.