Design of a 3-State Reconfigurable CRLH Transmission Line Based on Mems Switches

Monti, Giuseppina; Paolis, Rosa De; Tarricone, Luciano

doi:10.2528/pier09071109

Cited by 44 publications

(30 citation statements)

References 24 publications

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“…It is well know that an artificial structure, consisting for example of metallic inclusions in a dielectric host material [25,26] or of a periodically loaded transmission line [27][28][29][30][31][32][33][34][35], can be considered as an homogenous medium at frequencies corresponding to wavelengths much longer than the intrinsic length-scales of the composite (effective medium approach) [25,26,[36][37][38][39][40].…”

Section: Metal Foams Analytical Model: An Effective Medium Approachmentioning

confidence: 99%

Metal Foams for Electromagnetics: Experimental, Numerical and Analytical Characterization

Catarinucci¹,

Monti²,

Tarricone³

2012

PIER B

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Abstract-This work focuses on the use of metal foams, a relatively new class of materials, for high added-value electromagnetic (EM) shields. First, the Shielding Effectiveness (SE) of aluminum foam slabs is experimentally evaluated, showing very good shielding properties. Successively, accurate numerical models of metal foams are proposed and used in a proprietary Variable-Mesh Parallel Finite Difference Time Domain code, in order to characterize the EM properties of slabs of such materials. Afterwards, a third approach is adopted. It consists in the application of the effective medium theories in order to obtain an analytical EM model of the metal foams; this way, their SE can be evaluated with a negligible computational time by using common mathematical tools. Finally, a methodology to design/analyze customized metal foams for EM shield applications is suggested. It takes advantage from the joint use of the numerical and analytical presented approaches, thus allowing a computationally efficient evaluation of SE and other electromagnetic properties of metal foams. Results demonstrate the suitability of metal foam structures for effective EM shielding in many industrial applications, as well as the accuracy of the proposed analytical and numerical approaches.

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Section: Metal Foams Analytical Model: An Effective Medium Approachmentioning

confidence: 99%

Metal Foams for Electromagnetics: Experimental, Numerical and Analytical Characterization

Catarinucci¹,

Monti²,

Tarricone³

2012

PIER B

Self Cite

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“…These designs share one of the major drawbacks, i.e., the power-handling capability is limited by the powerhandling capabilities of the switches, tunable diodes and tunable capacitors used in the designs. A phase shifter based on CRLH TL employing MEMS has also been proposed and studied (Monti et al, 2009), but the reliability of the design needs more studies (Rebeiz et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Designs of True-Time-Delay Lines and Phase Shifters Based on CRLH TL Unit Cells

Zhang¹,

Cheung²,

Yuk³

2012

Metamaterial

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Introduction Brief description on definition of electromagnetic metamaterialsElectromagnetic (EM) Metamaterials have specific EM properties that cannot be found in nature (Caloz & Itoh, 2006). These specific EM properties are obtained by the artificial structures, rather than the composition of the metamaterials, and affect the propagations of EM waves when the average structure sizes are much smaller than the guided wavelengths g , i.e., at least smaller than g /4. Since the propagation of an EM wave is related to its electric and magnetic fields, the EM properties of Electromagnetic (EM) Metamaterials can be described by using its permittivity ε and permeability .

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“…In this paper, by proposing a modified CRLH unit cell with high rejection at 5.8 GHz, two novel bandpass filters for lower UWB band applications are designed and implemented using metal-insulator-metal (MIM) capacitors [9,10]. …”

Section: Introductionmentioning

confidence: 99%

5.8-GHz SUPPRESSED UWB BANDPASS FILTER EMPLOYING MODIFIED CRLH-TL OF TWO AND THREE UNIT CELLS

Shen¹,

Law²

2012

PIER Letters

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Abstract-This paper presents a novel modified composite right/lefthanded (CRLH) unit cell to achieve sharp rejection at 5.8 GHz. Design formulas are theoretically derived and numerically verified. Based on this unit cell, ultra-wideband (UWB) bandpass filters with two and three cells are designed, fabricated, and on-wafer measured. The measurement results show that the CRLH bandpass filter has a rejection of > 60 dB at 5.8 GHz, a minimum insertion loss of 1.1 dB, and 3-dB bandwidths of 3.09-4.79 GHz and 3.22-4.61 GHz for the two and three unit cells, respectively.

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Design of a 3-State Reconfigurable CRLH Transmission Line Based on Mems Switches

Cited by 44 publications

References 24 publications

Metal Foams for Electromagnetics: Experimental, Numerical and Analytical Characterization

Metal Foams for Electromagnetics: Experimental, Numerical and Analytical Characterization

Designs of True-Time-Delay Lines and Phase Shifters Based on CRLH TL Unit Cells

5.8-GHz SUPPRESSED UWB BANDPASS FILTER EMPLOYING MODIFIED CRLH-TL OF TWO AND THREE UNIT CELLS

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