Towards on-chip photonic-assisted radio-frequency spectral measurement and monitoring

L Romero Cortés, D Onori, H Guillet de Chatellus… - Optica, 2020 - opg.optica.org
Precise detection and monitoring of the frequency spectrum of microwave signals are
essential to myriad scientific and technological disciplines, including both civil and defense …

Real-time gap-free dynamic waveform spectral analysis with nanosecond resolutions through analog signal processing

SR Konatham, R Maram, L Romero Cortés… - Nature …, 2020 - nature.com
Real-time tracking of a waveform frequency content is essential for detection and analysis of
fast rare events in communications, radar, radio astronomy, spectroscopy, sensing etc. This …

Towards an intelligent photonic system

W Zou, B Ma, S Xu, X Zou, X Wang - Science China Information Sciences, 2020 - Springer
The emerging intelligence technologies represented by deep learning have broadened their
applications to various fields. Beyond the conventional electronics-based processing …

Photonics-based real-time spectrogram analysis of broadband waveforms

SR Konatham, HG de Chatellus… - Journal of lightwave …, 2020 - opg.optica.org
This article provides a review and deeper insight on the fundamentals and main design
trade-offs of a new method for joint time-frequency analysis of broadband signals, namely …

Methods for computation-free wideband spectral correlation and analysis

V Ataie - US Patent 11,137,627, 2021 - Google Patents
An apparatus for generating a set of spectral correlation coefficients of an input signal
includes: a master laser configured to generate an optical frequency comb signal; a first …

Encrypted Waveform Design for Low-Probability of Intercept Radar

P Zhu, H Qiu, W Meng, X Yu, G Cui… - 2024 9th International …, 2024 - ieeexplore.ieee.org
In this paper, a novel encrypted waveform employing pseudo-random binary phase
sequence (PRBPS) is introduced, which effectively disguises a regular waveform by …

Real-time analog time-frequency signal analysis

J Azaña, SR Konatham, R Maram… - 2019 IEEE Pacific …, 2019 - ieeexplore.ieee.org
The short-time Fourier transform (STFT), or spectrogram (SP), is a very powerful joint time-
frequency signal analysis tool of importance for a wide range of applications, including …

Photonics-Based Real-Time 2D (Time-Frequency) Broadband Signal Analysis and Processing

J Azaña, SR Konatham, R Maram… - … Topical Meeting on …, 2019 - ieeexplore.ieee.org
This contribution reviews recent work on a new universal analog-processing design for gap-
free real-time spectral analysis of broadband microwave signals, through a continuous …

Optical Cyclostationary Processor for Spectrum Sensing

J Langston, K Bagnell, R DeSalvo… - 2019 IEEE Avionics …, 2019 - ieeexplore.ieee.org
We experimentally demonstrate an optical architecture that computes the spectral
correlation function of high bandwidth waveforms, employing the conjugate multiplication of …

System and method for analog estimation and streaming of a spectral correlation function (SCF)

DJ Esman - US Patent 11,515,946, 2022 - Google Patents
A system and method for analog estimation of a spectral correlation function (SCF) provides
a photonic carrier to generate a signal comb and offset comb, each comprising N comb …