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Title:
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Reduction of electromagnetic interference susceptibility in small-signal analog circuits using complementary split-ring resonators
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Author:
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Pérez Robles, Daniel; Gil Galí, Ignacio; Gago Barrio, Javier; Fernández García, Raúl; Balcells Sendra, Josep; González Díez, David; Berbel Artal, Néstor; Mon González, Juan
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. TIEG - Terrassa Industrial Electronics Group |
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Abstract:
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Low-frequency analog and digital electronic circuits
are susceptible to electromagnetic interference in the radiofrequency
(RF) range. This disturbance is produced when the
coupled RF signal is rectified by the nonlinear behavior of the
semiconductors used in the small-signal analog input stage of the
electronic system. Circuits based on operational amplifiers are
usually employed for such input stages. These circuits present
an amplitude modulation demodulation produced by the nonlinearity
of internal transistors. Such a phenomenon generates
demodulated signals in the low-frequency range. In this paper,
this effect is suppressed by combining the conventional printed
circuit board layout with complementary split-ring resonators
(CSRRs). CSRRs are constitutive elements for the synthesis of
metamaterials with negative effective permittivity, which are
mainly excited to the host line by means of electric coupling.
Electromagnetic simulations and experimental results show an
effective rejection of the undesired RF demodulation effect with
no extra cost in terms of the device area or manufacturing
process. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Física::Electromagnetisme
-Àrees temàtiques de la UPC::Enginyeria electrònica
-Electromagnetism
-Operational amplifiers
-Electromagnetisme
-Amplificadors operacionals |
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Rights:
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Document type:
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Article - Published version
Article |
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Published by:
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IEEE
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