Affiliated with the
Communication & Space
Sciences Laboratory

Novel Electromagnetic Metamaterials

Memristors

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..: References :..

1-) Passive switching of electromagnetic devices with memristors
by Matthew G. Bray and Douglas H. Werner
Applied Physics Letters, 96 (2010) 073504, 17 February 2010.

ABSTRACT: A method of using memristors as passive electromagnetic switches is demonstrated via full-wave finite-difference time-domain simulations. A memristor is a fundamental circuit element that directly links flux and charge. These circuit elements exhibit a resistive memory effect, which results from a frequency dependent hysteresis. Therefore a memristor can be used as a resistive switch whose resistance varies under low frequency excitation but is unchanged at high frequencies. Utilizing this property, a passive reconfigurable band-pass frequency selective surface that is switched via space waves was designed and simulated.
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2-) Application of the Memristor in Reconfigurable Electromagnetic Devices
by M. D. Gregory and D. H. Werner,
IEEE Antennas and Propagation Magazine, Vol. 57, No. 1, pp. 239-248, Feb. 2015.

ABSTRACT: The recently popularized memristor, short for memory resistor, is investigated in this paper for its potential as a new and attractive method for enabling reconfigurable radio-frequency (RF) devices. The charge- or flux-controlled resistance of this "fourth circuit element" allows for easy reconfigurability and maintains its configured state in the absence of controlling signals. A specialized finite-difference time-domain simulation code is developed and employed to design devices with embedded memristors. The time-domain code allows observation of the nonlinear memristor switching characteristics and real-time functionality of the reconfigurable device. Several different reconfigurable RF devices are designed here to demonstrate the versatility of the memristor and determine the behavior of systems which utilize them.
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