US 12,267,066 B2
Topological insulator-based multiplexer/demultiplexer
Michael J. Leamy, Atlanta, GA (US); Amir A. Darabi, Atlanta, GA (US); and Emily Kliewer, Atlanta, GA (US)
Assigned to Georgia Tech Research Corporation, Atlanta, GA (US)
Filed by Georgia Tech Research Corporation, Atlanta, GA (US)
Filed on Sep. 27, 2022, as Appl. No. 17/935,694.
Claims priority of provisional application 63/248,552, filed on Sep. 27, 2021.
Prior Publication US 2023/0101350 A1, Mar. 30, 2023
Int. Cl. H03H 9/72 (2006.01); H10N 30/80 (2023.01)
CPC H03H 9/72 (2013.01) [H10N 30/802 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A multiplexer/demultiplexer comprising:
unit cells arranged in a lattice, each of the unit cells comprising:
a topological-insulative material;
a first piezoelectric patch; and
a second piezoelectric patch;
a first domain comprising a first portion of the unit cells;
a second domain comprising a second portion of the unit cells;
a third domain comprising a third portion of the unit cells; and
a controller configured to:
apply a negative capacitance to the first piezoelectric patches in the first portion of the unit cells;
apply a negative capacitance to the second piezoelectric patches in the second portion of the unit cells; and
alternately apply a negative capacitance to the first and second piezoelectric patches, respectively, in the third portion of the unit cells.