Analysis, modeling, and applications of coaxial waveguide-based left-handed transmission lines

Salehi, H.; Mansour, R.R.

doi:10.1109/tmtt.2005.857335

Cited by 15 publications

(7 citation statements)

References 13 publications

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“…3(a) according to the equations (1) (2) (3) where are the admittance parameters and is the angular frequency. Similarly, the circuit parameters for the network in (4) (5) (6) where are the impedance parameters. For this work, CST Microwave Studio was used for the numerical simulation of the geometries in Fig.…”

Section: Theorymentioning

confidence: 99%

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Coaxial Right/Left-Handed Transmission Line for Electronic Beam Steering in the Slotted Waveguide Antenna Stiffened Structure

Nicholson

Rowe

Callus

et al. 2014

IEEE Trans. Microwave Theory Techn.

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Abstract-The slotted waveguide antenna stiffened structure (SWASS) utilizes conventional hat-stiffeners or blade stiffeners in aircraft sandwich structures as microwave waveguides. Slotted waveguide antenna arrays may therefore be integrated into the structure by machining slots through the outer skin. However, the primary mechanical load applied to the structure governs the orientation of these slotted waveguides and so dictates the antenna scan plane. This work extends the SWASS concept by demonstrating a means to achieve electronic phase shifting along the waveguide axis for the purpose of beam steering. This is accomplished by incorporating a varactor loaded coaxial composite right/left-handed transmission line into the SWASS for approximate matched tuning of the dispersion diagram about the design frequency.Index Terms-Coaxial, composite material structures, metamaterial, phase shifters, waveguide slot arrays.

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Section: Theorymentioning

confidence: 99%

“…The theory and fabrication of a CRLH-TL utilizing microstrip technology is thoroughly discussed in [5]. The CRLH-TL concept has also been extended to coaxial [6] and rectangular [7] waveguides. Furthermore, a variety of methods to tune the CRLH-TL have been reported.…”

mentioning

confidence: 99%

Coaxial Right/Left-Handed Transmission Line for Electronic Beam Steering in the Slotted Waveguide Antenna Stiffened Structure

Nicholson

Rowe

Callus

et al. 2014

IEEE Trans. Microwave Theory Techn.

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“…Substituting (5b) into (4), we can get . Substituting into (3a) and considering the boundary condition (3b), we can get the solution of the differential (3a) (6) where Thus, we can evaluate the integral (7) where Fig. 5.…”

Section: Determination Of Dispersion Equation By Field Theorymentioning

confidence: 99%

“…Recently, Decoopman and Salehi have proposed to insert SRRs and thin wires into the rectangle waveguide [3], [4] and coaxial waveguide [4], [5] to obtain LHTL. The second kind is realized by loading a transmission line (TL) with lumped or distributed inductors and capacitors [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Left-Handed Transmission Line Based on Resonant-Slot Coupled Cavity Chain

Liao

Yan

Jin

et al. 2007

IEEE Microw. Wireless Compon. Lett.

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In this letter, a novel realization of left-handed transmission line is presented; the proposed structure is based on identical symmetrical resonant-slot coupled cavity chain. The dispersion characteristic of the resonant-slot coupled cavity chain is analyzed by means of field theory and finite element method (FEM) eigenmode simulation, and a left-handed passband is proved to exist. A backward wave behavior is demonstrated unambiguously from FEM driven modal simulation. The phase front is observed to be in the opposite direction with respect to the energy one for a finite nine-unit cell prototype.Index Terms-Backward waves, dispersion characteristic, left-handed passband (LH passband), left-handed transmission line (LHTL), resonant-slot coupled cavity chain.

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“…Also, the negative permittivity and permeability of LHM, as well as negative refraction index were calculated from the numerical data [6]. Various studies using different structure designs extended this investigation [7]. All of these measurements were performed in a waveguide chamber which limited one of the dimensions of the LHM structures to a maximum of three cells.…”

Section: Introductionmentioning

confidence: 99%

Transmission and reflection properties of composite metamaterials in free space: Experiments and simulations

Yang

Wen³

2009

Micro & Optical Tech Letters

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Free‐space microwave measurements are applied on composite metamaterials (CMMs) consisting of split ring resonators (SRRs) and wires, also known as left‐handed material. Our experiments are based on a type of CMMs with unique configurations and the transmission and reflection measurements performed in free space exhibit a pass band at about 9 GHz. Simulation results are also given, which are in good agreements with experiments. The widely belief of the pass band is that the stop bands of the SRRs alone and the wires alone constitute a clear demonstration of left‐handed (LH) behavior. The LH behavior only take place in the medium with simultaneously negative permittivity ε, and permeability μ, also called double negative materials. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1865–1868, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24465

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Analysis, modeling, and applications of coaxial waveguide-based left-handed transmission lines

Cited by 15 publications

References 13 publications

Coaxial Right/Left-Handed Transmission Line for Electronic Beam Steering in the Slotted Waveguide Antenna Stiffened Structure

Coaxial Right/Left-Handed Transmission Line for Electronic Beam Steering in the Slotted Waveguide Antenna Stiffened Structure

Left-Handed Transmission Line Based on Resonant-Slot Coupled Cavity Chain

Transmission and reflection properties of composite metamaterials in free space: Experiments and simulations

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