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This paper presents a global framework analysis of a microstrip antenna design circularly polarized with an operating frequency of 5.80 GHz and a bandwidth of at least 500 MHz. We evaluate the optimal antenna parameters to design…

Signal Processing · Electrical Eng. & Systems 2019-01-17 Elyes Balti , Brian K. Johnson

This work proposes a small pattern and polarization diversity multi-sector annular antenna with electrical size and profile of ${ka=1.2}$ and ${0.018\lambda}$, respectively. The antenna is planar and comprises annular sectors that are fed…

Signal Processing · Electrical Eng. & Systems 2023-07-12 Abel Zandamela , Nicola Marchetti , Max J. Ammann , Adam Narbudowicz

Machine learning methods are increasingly helping astronomers identify new radio pulsars. However, they require a large amount of labelled data, which is time consuming to produce and biased. Here we describe a Semi-Supervised Generative…

Instrumentation and Methods for Astrophysics · Physics 2021-05-14 Vishnu Balakrishnan , David Champion , Ewan Barr , Michael Kramer , Rahul Sengar , Matthew Bailes

Polarimetric synthetic aperture radar (PolSAR) images are widely used in disaster detection and military reconnaissance and so on. However, their interpretation faces some challenges, e.g., deficiency of labeled data, inadequate utilization…

Image and Video Processing · Electrical Eng. & Systems 2019-06-11 Qigong Sun , Xiufang Li , Lingling Li , Xu Liu , Fang Liu , Licheng Jiao

As a revolutionary generative paradigm of deep learning, generative adversarial networks (GANs) have been widely applied in various fields to synthesize realistic data. However, it is challenging for conventional GANs to synthesize raw…

Signal Processing · Electrical Eng. & Systems 2023-06-27 Weidong Wang , Jiancheng An , Hongshu Liao , Lu Gan , Chau Yuen

The unique benefits of Fabry-P\'erot resonators as frequency-stable reference cavities and as an efficient interface between atoms and photons make them an indispensable resource for emerging photonic technologies. To bring these…

In aerodynamic shape optimization, the convergence and computational cost are greatly affected by the representation capacity and compactness of the design space. Previous research has demonstrated that using a deep generative model to…

Machine Learning · Computer Science 2021-01-11 Wei Chen , Arun Ramamurthy

One of the most significant challenges in statistical signal processing and machine learning is how to obtain a generative model that can produce samples of large-scale data distribution, such as images and speeches. Generative Adversarial…

Computer Vision and Pattern Recognition · Computer Science 2020-05-28 Pegah Salehi , Abdolah Chalechale , Maryam Taghizadeh

We propose to take advantage of the properties of long Josephson junctions to realize a frequency variable Fabry-Perot Filter that operates in the range 100-500 GHz with a bandwidth below 1 GHz. In fact, we show that it is possible to…

Optics · Physics 2015-07-24 Vincenzo Pierro , Giovanni Filatrella

We explore broadband and omnidirectional low frequency sound screening based on locally resonant acoustic metamaterials. We show that the coupling of different resonant modes supported by Fabry-Perot cavities can efficiently generate…

Applied Physics · Physics 2017-10-25 A. Elayouch , M. Addouche , M. Farhat , A. Khelif

In this paper, a regression-based machine learning model is used for the design of cavity backed slotted antenna. This type of antenna is commonly used in military and aviation communication systems. Initial reflection coefficient data of…

Machine Learning · Computer Science 2025-02-27 Vijay Kumar Sutrakar , Anjana PK , Rohit Bisariya , Soumya KK , Gopal Chawan M

We present a method to engineer the frequency splitting of polarization eigenmodes in fiber Fabry-Perot (FFP) cavities. Using specific pattern of multiple CO$_2$ laser pulses, we machine paraboloidal micromirrors with controlled elliptical…

A circularly polarized leaky-wave antenna capable of frequency scanning is proposed in this paper. The main objective is to achieve high gain and polarization purity without the need for a complex feed network. The antenna consists of two…

Applied Physics · Physics 2020-07-21 Ali Mohammad Hakimi , Ali Keivaan , Homayoon Oraizi , Amrollah Amini

In recent years, Generative Adversarial Networks (GANs) have shown substantial progress in modeling complex distributions of data. These networks have received tremendous attention since they can generate implicit probabilistic models that…

Signal Processing · Electrical Eng. & Systems 2018-10-25 Mehdi Ahmadi , Timothy Nest , Mostafa Abdelnaim , Thanh-Dung Le

We propose Fabry-Perot cavity with corner reflectors instead of spherical mirrors to reduce the contribution of thermoelastic noise in the coating which is relatively large for spherical mirrors and which prevents the sensitivity better…

Statistical Mechanics · Physics 2009-11-10 V. B. Braginsky , S. P. Vyatchanin

The generation of multiphase porous electrode microstructures is a critical step in the optimisation of electrochemical energy storage devices. This work implements a deep convolutional generative adversarial network (DC-GAN) for generating…

Neural and Evolutionary Computing · Computer Science 2020-05-06 Andrea Gayon-Lombardo , Lukas Mosser , Nigel P. Brandon , Samuel J. Cooper

Energy-saving LIDAR camera for short distances estimates an object's distance using temporally intensity-coded laser light pulses and calculates the maximum correlation with the back-scattered pulse. Though on low power, the backs-scattered…

Computer Vision and Pattern Recognition · Computer Science 2020-12-17 Nir Diamant , Tal Mund , Ohad Menashe , Aviad Zabatani , Alex M. Bronstein

Magnetic resonance imaging plays an important role in computer-aided diagnosis and brain exploration. However, limited by hardware, scanning time and cost, it's challenging to acquire high-resolution (HR) magnetic resonance (MR) image…

Image and Video Processing · Electrical Eng. & Systems 2020-11-10 Senrong You , Yong Liu , Baiying Lei , Shuqiang Wang

Terahertz (THz) communications are envisioned as a promising technology for 6G and beyond wireless systems, providing ultra-broad bandwidth and thus Terabit-per-second (Tbps) data rates. However, as foundation of designing THz…

Signal Processing · Electrical Eng. & Systems 2023-01-04 Zhengdong Hu , Yuanbo Li , Chong Han

We present three high finesse tunable monolithic fiber Fabry-Perot cavities (FFPCs) with high passive mechanical stability. The fiber mirrors are fixed inside slotted glass ferrules, which guarantee an inherent alignment of the resonators.…

Instrumentation and Detectors · Physics 2021-01-07 Carlos Saavedra , Deepak Pandey , Wolfgang Alt , Hannes Pfeifer , Dieter Meschede