Parametric enhancement of radiation from electrically small antennas

A Mekawy, H Li, Y Radi, A Alù - Physical Review Applied, 2021 - APS
Electrically small antennas are characterized by large quality factors, which yield limited
gain-bandwidth products, as a result of the Bode-Fano limit. This bound implies a trade-off …

Physically oriented design of negative capacitors based on Linvill's floating impedance converter

B Buiantuev, N Kalmykov, D Kholodnyak… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
In this article, we present a physically oriented design of broadband RF negative non-Foster
capacitors. The design procedure is based on the matrix decomposition of Linvill's floating …

Broadband fast-wave propagation in a non-Foster circuit loaded waveguide

J Long, MM Jacob… - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
Frequency independent fast-wave (FW) propagation with phase velocity greater than the
speed of light can be ideally realized in a dielectric medium whose relative permittivity is …

Non-foster loaded parasitic array for broadband steerable patterns

MM Jacob, J Long… - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
Parasitic arrays can generate steerable patterns using tunable reactive loads at the parasitic
elements to provide the required phase for the scattered radiation. However, the radiation …

Negative-inertia converters: Devices manifesting negative mass and negative moment of inertia

J Lončar, B Igrec, D Babić - Symmetry, 2022 - mdpi.com
Negative inertia is an unusual and counter-intuitive property of matter, extensively
investigated in some of the most exotic branches of physics and engineering at both …

Challenges in design of power-amplifying active metasurfaces

J Lončar, Z Šipuš - 2020 International Symposium ELMAR, 2020 - ieeexplore.ieee.org
The basic methodology in designing a transmissive or reflective power-amplifying
metasurface is explained. Ensuring stability is recognized as the greatest challenge in the …

[图书][B] Non-Foster circuits for high performance antennas: advantages and practical limitations

MM Jacob - 2016 - search.proquest.com
The demand for miniaturized, broadband communication systems has created a need for
electrically small, broadband antennas. However, all passive electrically small antennas …

Sensitivity of negative impedance converter circuit with respect to PCB design effects

L Batel, L Rudant, JF Pintos… - … Workshop on Antenna …, 2015 - ieeexplore.ieee.org
Performance characteristics of Electrically Small Antennas are limited by fundamental
physics. Using Non-Foster elements into antennas structures appears like an opportunity to …

Non-Foster broadband matching networks for electrically-small antennas

N Ivanov, B Buyantuev, V Turgaliev… - 2016 Loughborough …, 2016 - ieeexplore.ieee.org
Design of non-Foster matching networks for monopole and loop printed antennas operating
much lower their resonance frequencies are presented. Both matching networks consist of a …

High directive compact antenna with non-foster elements

L Batel, L Rudant, JF Pintos, A Clemente… - 2015 International …, 2015 - ieeexplore.ieee.org
Performance characteristics of passive electrically small antennas are limited by
fundamental physics. Using active elements into antenna structures appears like an …