Highly sensitive coupled oscillator based on an exceptional point of degeneracy and nonlinearity

A Nikzamir, F Capolino - Physical Review Applied, 2022 - APS
We propose a scheme to obtain highly sensitive oscillators in a coupled-resonator system
with an exceptional point of degeneracy (EPD) and a small instability. The oscillator with the …

[HTML][HTML] Experimental demonstration of exceptional points of degeneracy in linear time periodic systems and exceptional sensitivity

H Kazemi, MY Nada, A Nikzamir… - Journal of Applied …, 2022 - pubs.aip.org
We present the experimental demonstration of the occurrence of exceptional points of
degeneracy (EPDs) in a single resonator by introducing a linear time-periodic variation of …

How to achieve exceptional points in coupled resonators using a gyrator or PT-symmetry, and in a time-modulated single resonator: high sensitivity to perturbations

A Nikzamir, K Rouhi, A Figotin… - EPJ Applied …, 2022 - epjam.epj.org
We study the rise of exceptional points of degeneracy (EPD) in various distinct circuit
configurations such as gyrator-based coupled resonators, coupled resonators with PT …

Time modulation to manage and increase the power harvested from external vibrations

A Nikzamir, K Rouhi, A Figotin, F Capolino - Applied Physics Letters, 2023 - pubs.aip.org
We investigate how a single resonator with a time-modulated component extracts power
from an external ambient source. The collected power is largely dependent on the precise …

High-sensitive parity-time symmetric oscillator in coupled transmission lines with nonlinear gain

H Kazemi, A Nikzamir, T Mealy… - IEEE Journal of …, 2022 - ieeexplore.ieee.org
A scheme for generating oscillations based on an exceptional point of degeneracy (EPD) is
proposed in two-coupled resonators made of two coupled transmission lines terminated on …

Simple reciprocal electric circuit exhibiting exceptional point of degeneracy

K Rouhi, F Capolino, A Figotin - Journal of Physics A …, 2024 - iopscience.iop.org
An exceptional point of degeneracy (EPD) occurs when both the eigenvalues and the
corresponding eigenvectors of a square matrix coincide and the matrix has a nontrivial …

Two resonators with negative and positive reactive components to achieve an exceptional point of degeneracy

K Rouhi, A Nikzamir, A Figotin… - … Congress on Artificial …, 2022 - ieeexplore.ieee.org
We present a scheme supporting an exceptional point of degeneracy (EPD) using
connected Foster and non-Foster resonators. One resonator contains positive components …

Theory and Applications of Exceptional Points of Degeneracy in Microwave and High Sensitive Applications

A Nikzamir - 2024 - search.proquest.com
Electromagnetic (EM) structures are essential in high-speed communications and radar
systems. Enhancing the performance of these components can significantly impact …

Advancement in the modeling of electron beam devices and ultrasensitive circuits

K Rouhi - 2024 - search.proquest.com
This dissertation explores the advancement of exceptional points of degeneracy (EPDs) in
electrical circuits and their applications in highly sensitive devices, alongside the modeling …

Exceptional Points in Gyrator-Based Circuit and Nonlinear High-Sensitivity Oscillator

A Nikzamir, K Rouhi, A Figotin, F Capolino - arxiv preprint arxiv …, 2021 - arxiv.org
We present a scheme for high-sensitive oscillators based on an exceptional point of
degeneracy (EPD) in a circuit made of two LC resonators coupled by a gyrator. The …