US 11,921,136 B2
Exceptional points of degeneracy in linear time periodic systems and exceptional sensitivity
Filippo Capolino, Irvine, CA (US); and Hamidreza Kazemi Varnamkhasti, Irvine (CA)
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 Aug. 20, 2021, as Appl. No. 17/408,071.
Claims priority of provisional application 63/068,214, filed on Aug. 20, 2020.
Prior Publication US 2022/0057440 A1, Feb. 24, 2022
Int. Cl. G01R 23/02 (2006.01); H03B 5/08 (2006.01)
CPC G01R 23/02 (2013.01) [H03B 5/08 (2013.01); H03B 2200/004 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A circuit comprising:
a reset circuit;
a modulation circuit;
an LC circuit, the modulation circuit and the LC circuit forming a combined modulation circuit and LC circuit; and
the modulation circuit configured to modulate an effective inductance or capacitance when connected to the LC circuit creating a modulated LC circuit to cause the combined modulation circuit and the LC circuit to operate proximal to an exceptional point of degeneracy (EPD), the modulation circuit including a multiplier circuit configured to receive a modulating periodic signal, and the reset circuit coupled to the multiplier and the LC circuit, the reset circuit configured to reset the modulation circuit.