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   Articles with "non foster" as a keyword



Design and analysis of a broadband and miniaturized linear polarized converter based on non‐Foster metasurfaces

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recommendations! Published in 2020 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.32591

Abstract: A broadband highly efficient and miniaturized polarizing converter, employing non‐Foster metasurface composed of a single layer cut‐wire resonator is presented in microwave regime. Non‐Foster component are loaded to traditional dipole‐type linear polarized converter to further… read more here.

Keywords: polarized converter; converter; non foster; broadband ... See more keywords

Perceived Impact of the COVID-19 Lockdown on the Family Context of Foster and Non-Foster Families

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recommendations! Published in 2021 at "Journal of Child and Family Studies"

DOI: 10.1007/s10826-021-02185-x

Abstract: The COVID-19 pandemic and the resulting lockdown have had a far-reaching impact across all levels of society. In Spain, severe restrictions were placed on people’s mobility, and leaving the home was only possible under special… read more here.

Keywords: non foster; lockdown family; family context; family ... See more keywords
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Broadband and thin magnetic absorber with non-Foster metasurface for admittance matching

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recommendations! Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-07323-4

Abstract: One of the long-standing and challenging problems in microwave engineering is the realization of ultra-wideband absorption using extremely-thin structures. Magnetic material can facilitate thickness reduction for microwave absorbers but also bring inherent narrowband admittance matching… read more here.

Keywords: admittance matching; admittance; thin magnetic; absorber ... See more keywords

A Novel Fully Reconfigurable Non Foster Capacitance Using Distributed Negative Group Delay Networks

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recommendations! Published in 2019 at "IEEE Access"

DOI: 10.1109/access.2019.2927259

Abstract: A novel reconfigurable non-Foster capacitance (NFC) using negative group delay (NGD) circuit is presented in this paper. The NGD circuit is based on a multi-order distributed amplifier which is used to achieve both NGD performance… read more here.

Keywords: foster capacitance; group delay; reconfigurable non; negative group ... See more keywords

A 44–64-GHz mmWave Broadband Linear Doherty PA in Silicon With Quadrature Hybrid Combiner and Non-Foster Impedance Tuner

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recommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"

DOI: 10.1109/jssc.2022.3171570

Abstract: The proliferation of millimeter-wave (mmWave) bands across 24–90 GHz and the strict spectral efficiency requirements demand future transmitter front ends to operate across multiple bands with simultaneously back-off efficiency and high linearity—characteristics that typically trade… read more here.

Keywords: quadrature hybrid; doherty; non foster; efficiency ... See more keywords

Electrically Small, Broadside Radiating Huygens Source Antenna Augmented With Internal Non-Foster Elements to Increase Its Bandwidth

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recommendations! Published in 2017 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2016.2600525

Abstract: A broadside radiating, linearly polarized, electrically small Huygens source antenna system that has a large impedance bandwidth is reported. The bandwidth performance is facilitated by embedding non-Foster components into the near-field resonant parasitic elements of… read more here.

Keywords: broadside radiating; electrically small; source antenna; huygens source ... See more keywords

Toward Self-Oscillating Non-Foster Unit Cell for Future Active Metasurfaces

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recommendations! Published in 2020 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2019.2951529

Abstract: The concept of a self-oscillating non-Foster unit cell, intended for use in future active metasurfaces, is introduced. It is based on two orthogonally polarized small antennas connected via a negative impedance converter (NIC). An NIC… read more here.

Keywords: self oscillating; oscillating non; non foster; unit cell ... See more keywords

Miniaturized Multiband Smartphone Antenna Using Non-Foster-Based Active Matching Below 1 GHz

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recommendations! Published in 2025 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2025.3596714

Abstract: In this article, a miniature triple-band antenna using active–passive matching method is presented for 5G mobile terminals. The antenna consists of two driven monopoles and one parasitic ground branch, which generates multiple modes to cover… read more here.

Keywords: mhz; band; antenna; active matching ... See more keywords

Stability and Bifurcation Analysis of Multi-Element Non-Foster Networks

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recommendations! Published in 2018 at "IEEE Transactions on Microwave Theory and Techniques"

DOI: 10.1109/tmtt.2018.2793893

Abstract: A stability and bifurcation analysis of multi-element non-Foster networks is presented, illustrated through its application to non-Foster transmission lines. These are obtained by periodically loading a passive transmission line with negative capacitors, implemented with negative-impedance… read more here.

Keywords: analysis; multi element; stability; bifurcation ... See more keywords

Load Network for Broadband Doherty Power Amplifiers Using Non-Foster Characteristics of a Coupled Transmission Line

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recommendations! Published in 2025 at "IEEE Transactions on Microwave Theory and Techniques"

DOI: 10.1109/tmtt.2025.3596926

Abstract: This article presents a simplified load network (LN) for Doherty power amplifiers (DPAs) based on a coupled transmission line (CTL), aimed at extending bandwidth and output power back-off (OBO) range. A CTL with a short-terminated… read more here.

Keywords: load network; non foster; power amplifiers; doherty power ... See more keywords

Mental Health Diagnoses of Children in Foster Care: A Comparison Study between Foster and Non-Foster Children Covered by Medicaid

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recommendations! Published in 2020 at "Pediatrics"

DOI: 10.1542/peds.146.1_meetingabstract.508-a

Abstract: Purpose The purpose of this study was to examine and analyze Medicaid utilization data from a comprehensive sample of foster and non-foster Medicaid patients in a large metropolitan area to determine rates of diagnoses of… read more here.

Keywords: foster; children foster; mental health; foster non ... See more keywords