High-NA achromatic metalenses by inverse design

H Chung, OD Miller - Optics Express, 2020 - opg.optica.org
We use inverse design to discover metalens structures that exhibit broadband, achromatic
focusing across low, moderate, and high numerical apertures. We show that standard unit …

Beampattern synthesis based on novel receive delay array for mainlobe interference mitigation

L Lan, G Liao, J Xu, Y Xu, HC So - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This article investigates beampattern synthesis methods based on a novel receive delay
array (RDA) to mitigate interferences located in the mainlobe of the beampattern. In our …

Microwave techniques for electron cyclotron resonance plasma diagnostics

D Mascali, E Naselli, G Torrisi - Review of Scientific Instruments, 2022 - pubs.aip.org
This paper reviews the main microwave diagnostic techniques and tools adopted in electron
cyclotron resonance (ECR)(and others) ion source laboratories, with a special focus on …

On the use of electromagnetic inversion for metasurface design

T Brown, C Narendra, Y Vahabzadeh… - … on Antennas and …, 2019 - ieeexplore.ieee.org
We show that the use of the electromagnetic inverse source framework offers great flexibility
in the design of metasurfaces. In particular, this approach is advantageous for antenna …

Triple-band implantable antenna design for biotelemetry applications in MICS/ISM/Wi-Fi/Bluetooth bands

K Shahverdi, S Hashemi, S Sarafan, H Cao - Technologies, 2022 - mdpi.com
Our objective is to design triple-band implantable antennas with wide bandwidths and
appropriate sizes for biomedical applications. The targeted design frequencies are 400 …

Microstrip antenna development for radar sensor

L Nagy - Sensors, 2023 - mdpi.com
Tank level measurement is an important research area in radar technology. Level
measurement using radar technology is a safe solution even under extreme process …

Current based automated design of realizable metasurface antennas with arbitrary pattern constraints

M Zucchi, F Vernì, M Righero… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
We present a 3-D method to numerically design a realizable metasurface, which transforms
a given incident field into a radiated field that satisfies mask-type (inequality) constraints …

Synthesis of orbital angular momentum antennas for target localization

GM Battaglia, T Isernia, R Palmeri… - Radio Science, 2023 - ieeexplore.ieee.org
The exploitation of Orbital Angular Momentum (OAM) is proposed to design circular-support
continuous aperture distributions and concentric-ring arrays for target-localization …

Gradient-based electromagnetic inversion for metasurface design using circuit models

C Narendra, T Brown, P Mojabi - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
A gradient-based optimization algorithm that is capable of directly designing a metasurface
at the circuit parameter level for a desired field (amplitude and phase) pattern or a desired …

Fault Diagnosis of Realistic Arrays from a Reduced Number of Phaseless Near-Field Measurements

R Palmeri, GM Battaglia, AF Morabito… - … on Antennas and …, 2023 - ieeexplore.ieee.org
We present a new approach to the problem of detecting element failures in any kind of array
antenna. The proposed method requires only phaseless information on the generated field …