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1. WO2020101773 - EXTREMELY ELECTRICALLY SMALL ANTENNAS BASED ON MULTIFERROIC MATERIALS

Publication Number WO/2020/101773
Publication Date 22.05.2020
International Application No. PCT/US2019/045865
International Filing Date 09.08.2019
IPC
G01R 33/02 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
02Measuring direction or magnitude of magnetic fields or magnetic flux
CPC
H01Q 1/38
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
36Structural form of radiating elements, e.g. cone, spiral, umbrella; ; Particular materials used therewith
38formed by a conductive layer on an insulating support
H01Q 9/0407
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
9Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
04Resonant antennas
0407Substantially flat resonant element parallel to ground plane, e.g. patch antenna
H03H 9/02228
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
02Details
02228Guided bulk acoustic wave devices or Lamb wave devices having interdigital transducers situated in parallel planes on either side of a piezoelectric layer
H03H 9/175
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
15Constructional features of resonators consisting of piezo-electric or electrostrictive material
17having a single resonator
171implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
172Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
175Acoustic mirrors
Applicants
  • THE REGENTS OF THE UNIVERSITY OF CALIFORNIA [US]/[US]
Inventors
  • CARMAN, Gregory P.
  • SEPULVEDA, Abdon E.
  • HU, Jinzhao
  • WU, Elmer
  • YAO, Zhi
  • SCHNEIDER, Joseph Devin
  • YAN, Wenzhong
  • TIWARI, Sidhant
Agents
  • O'BANION, John
Priority Data
62/716,93609.08.2018US
62/880,51330.07.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EXTREMELY ELECTRICALLY SMALL ANTENNAS BASED ON MULTIFERROIC MATERIALS
(FR) ANTENNES EXTRÊMEMENT PETITES EN TERMES ÉLECTRIQUES BASÉES SUR DES MATÉRIAUX MULTIFERROÏQUES
Abstract
(EN)
A multiferroic antenna apparatus and method are described which provides increased energy efficiencies and ease of implementation. Magnetoelastic and/or magnetostrictive resonator are coupled to a piezoelectric substrate, along with electrodes coupled to its opposing surfaces. In receive mode the resonators create mechanical waves in response to being excited into magnetic oscillation by receiving electromagnetic radiation, and these mechanical waves coupled to the piezoelectric substrate causing it to generate an electrical output signal at said electrodes. In transmit mode an electrical signal coupled through the electrodes induces mechanical waves in the piezoelectric substrate directed to the resonators which are excited into magnetic oscillation to output electromagnetic waves.
(FR)
L'invention concerne un appareil et un procédé d'antenne multiferroïque qui procurent des rendements énergétiques accrus et une plus grande facilité de mise en œuvre. Des résonateurs magnétoélastiques et/ou magnétostrictifs sont couplés à un substrat piézoélectrique, conjointement avec des électrodes couplées à leurs surfaces opposées. En mode réception, les résonateurs créent des ondes mécaniques en réponse à une excitation en oscillation magnétique par réception d'un rayonnement électromagnétique, ces ondes mécaniques couplées au substrat piézoélectrique l'amenant à générer un signal de sortie électrique au niveau desdites électrodes. En mode émission, un signal électrique couplé par l'intermédiaire des électrodes induit des ondes mécaniques dans le substrat piézoélectrique dirigées vers les résonateurs qui sont excités en oscillation magnétique pour émettre des ondes électromagnétiques.
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