Negative index metamaterial for selective angular separation of microwaves by polarization

Derov, John S.; Turchinetz, Beverly; Crisman, E. E.; Drehman, A. J.; Wing, Richard M.

doi:10.1109/aps.2004.1330163

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…The signal magnitude scales with the angle of polarization rotation. The response is similar to previous reported measurements for a unit cell with two posts 8 .…”

Section: Measurementssupporting

confidence: 81%

The microwave behavior of an anisotropic negative index medium

Derov

Turchinetz

Crisman

et al. 2005

Nanostructure Integration Techniques for Manufacturable Devices, Circuits, and Systems: Interfaces, Interconnects, and Nanosyst

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Public reporting burden for this collection of information is estimat.verage 1 hour per response, including the time for reviewing instruct earching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect ot this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject lo any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY)2 Free space microwave measurements are reported for a split ring and post type metamaterial which exhibits negative refraction in a frequency band between 13.5 and 14.5 GHz. Varying azimuthal angles and magnitudes are achieved by changing the polarization of the transmitter and receiver relative to each other and to the anisotropic axes of the material. The amplitude of the cross-polarized transmission has been measured at 50% of the co-polarization level. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR'S ACRONYM(S) SPONSORIMONITOR'S REPORT NUMBER(S)The maximum amplitude was achieved at a polarization angle' of 200 relative to the initial polarization. This polarization conversion indicates there are other losses-besides ohmic losses. The polarization rotation effect contributes to apparent transmission loss but could be exploited in applications. SUBJECT ABSTRACTFree space microwave measurements are reported for a split ring and post type metamaterial which exhibits negative refraction in a frequency band between 13.5 and 14.5 GHz. Varying azimuthal angles and magnitudes are achieved by changing the polarization of the transmitter and receiver relative to each other and to the anisotropic axes of the material. The amplitude of the cross-polarized transmission has been measured at 50% of the co-polarization level. The maximum amplitude was achieved at a polarization angle of 200 relative to the initial polarization. This polarization conversion indicates there are other losses besides ohmic losses.

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“…The signal magnitude scales with the angle of polarization rotation. The response is similar to previous reported measurements for a unit cell with two posts 8 .…”

Section: Measurementssupporting

confidence: 81%

The microwave behavior of an anisotropic negative index medium

Derov

Turchinetz

Crisman

et al. 2005

Nanostructure Integration Techniques for Manufacturable Devices, Circuits, and Systems: Interfaces, Interconnects, and Nanosyst

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“…Note that the structure needs to be symmetric to avoid the magnetoelectric polarizabilities. This phenomenon can be explained by polarization conversion which corresponds to a transmission change [15][16][17]. This higher-order magnetic resonance, marked as a magnetic-dipole mode, is also identified in a single ring [14].…”

Section: Discussionmentioning

confidence: 99%

Novel Broadband Terahertz Negative Refractive Index Metamaterials: Analysis and Experiment

Wongkasem¹,

Akyurtlu²,

Li³

et al. 2006

PIER

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Abstract-Broadband planar and non-planar negative refractive index (NRI) metamaterial (MTM) designs consisting of a periodically arranged split ring resonator and wire structures are developed in the terahertz (THz) frequency regime using the Finite-Difference TimeDomain (FDTD) method. The novel MTM designs generate a broad negative index of refraction (NIR) passband approximately two and a half times higher than those of the conventional SRR/wire structures, by using the same dimensions. Numerical simulations of wedgeand triangle-shaped metamaterials are used to prove the negative refractive index of the models. The fabricated MTMs exhibit passband characteristics which are in good agreement with the model results. The parametric studies of correlated factors further support these outcomes.

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“…(e)] are the dominant factor in providing the stop band in the transmission profile. Magnetic resonance is excited by the electric field of the incident MW interacting with the SRR gap . The magnetic resonance is a result of a predominant electric response of SRRs, which couple through magnetoelectric interaction with the magnetic field of the incident MW radiation .…”

Section: Discussionmentioning

confidence: 99%

“…In applications such as lenses, where the effective properties depend on the interplay of SRRs and Rs, changes to the polarization state will not only effect the transmitted radiation but also manifest as concomitant loss, attributed to complex propagation mechanisms inside the lens . Furthermore, typical MW transmission measurements are performed with antennas polarized in parallel, thus any polarization rotation would appear as a transmission loss.…”

Section: Introductionmentioning

confidence: 99%

Polarization properties of a 2‐D split ring resonator and rod type metamaterial lens

McGillivray

Cravey

Dudley

et al. 2014

Micro & Optical Tech Letters

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The polarization state of microwave (MW) radiation transmitted through a 2‐D split ring resonator and rod metamaterial (MTM) lens is investigated. At a resonance frequency of 3.63 GHz, the 2‐D lens modifies the polarization state of the incident radiation. For Ey incident polarization, the transmitted wave exhibits elliptical polarization as well as a tilt in the principal axis. The ellipticity is dependent on the incident polarization angle. A Ex polarized incident MW is unaffected. Transformation of polarization properties plays an important role for manipulation and control of MW radiation, impacting existing applications and providing opportunities for novel MTMs‐based sensors and other applications. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2146–2150, 2014

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Negative index metamaterial for selective angular separation of microwaves by polarization

Cited by 6 publications

References 3 publications

The microwave behavior of an anisotropic negative index medium

The microwave behavior of an anisotropic negative index medium

Novel Broadband Terahertz Negative Refractive Index Metamaterials: Analysis and Experiment

Polarization properties of a 2‐D split ring resonator and rod type metamaterial lens

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