Sensitivity analysis for active matched antennas with non-foster elements

González Posadas, Vicente and Albarracín Vargas, Fernando and Ugarte Muñoz, Eduardo and Segovia Vargas, Daniel (2014). Sensitivity analysis for active matched antennas with non-foster elements. "IEEE Transactions on Antennas and Propagation", v. 62 (n. 12); pp. 6040-6048. ISSN 0018-926X. https://doi.org/10.1109/TAP.2014.2364811.

Description

Title: Sensitivity analysis for active matched antennas with non-foster elements
Author/s:
  • González Posadas, Vicente
  • Albarracín Vargas, Fernando
  • Ugarte Muñoz, Eduardo
  • Segovia Vargas, Daniel
Item Type: Article
Título de Revista/Publicación: IEEE Transactions on Antennas and Propagation
Date: December 2014
ISSN: 0018-926X
Volume: 62
Subjects:
Freetext Keywords: Metamaterials, non-Foster reactance, small-antennas, stability
Faculty: E.T.S.I. y Sistemas de Telecomunicación (UPM)
Department: Teoría de la Señal y Comunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

During the last years many researchers have been working on the active matching or on non-Foster matching networks for one- and two-port electrically small antennas (ESAs). A new parameter on the sensitivity of the two-port electrically small antenna when loaded with a non-F oster network is presented. This sensitivity analysis will allow us to choose what kind of antennas can be properly matched with non-Foster networks and their position in order to optimi ze the performance of the design. Then, a typical high Q two-port antenna will be harder to match over a broad bandwidth, since |S21| is very small and only agrees with |S11| over very small frequency bands, yielding very large sensitivity values. However, for these two-port antennas, if high levels of coupling can be engineered for a high Q multiple-port antenna, the return and insertion losses can be similar over larger bandwidths and, hence, the sensitivity can be kept low over larger bandwidths, enabling broader impedance matched bandwidths to be achieved, even for highly resonant antennas.

More information

Item ID: 36176
DC Identifier: http://oa.upm.es/36176/
OAI Identifier: oai:oa.upm.es:36176
DOI: 10.1109/TAP.2014.2364811
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6936365
Deposited by: Memoria Investigacion
Deposited on: 12 Feb 2016 14:34
Last Modified: 12 Feb 2016 14:34
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