Coupling Between a Dielectric Image Guide and a Dielectric Resonator.

Farzaneh, Forouhar; Guillon, P.; Garault, Y.

doi:10.1109/mwsym.1984.1131708

Cited by 6 publications

(4 citation statements)

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“…The coupling analysis study between the DIG and the DRA is similar to that presented in [21] but for a/b < 0.5. The analysis was conducted with an alumina rod of a ¼ 0.8 mm, b ¼ 2.2 mm, e r ¼ 9.8, and a Si DR with a diameter ¼ 2.6 mm, and height ¼ 1.5 mm (e r ¼ 11.2).…”

Section: Dig Antennasmentioning

confidence: 95%

Development of millimeter wave antennas and associated feed network components using dielectric image guide

Lin¹,

Wilson²,

Fathy³

et al. 2009

Int J RF and Microwave Comp Aid Eng

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The dielectric image guide (DIG) lines have an extremely low loss at the millimeter and sub-millimeter frequencies. Here, we will demonstrate using a dielectric line with a width that is smaller than its height. Both ferrite and Si materials have been used to fabricate circuits to achieve tunable functions. Different millimeter wave components and radiating structures with this new aspect ratio have been developed, fabricated, and tested. Special emphasis has been placed on demonstrating the components and antennas' operation in the 26-35 GHz range, but the design concepts developed here can be easily extended to sub-millimeter wave frequencies.

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Section: Dig Antennasmentioning

confidence: 95%

Development of millimeter wave antennas and associated feed network components using dielectric image guide

Lin¹,

Wilson²,

Fathy³

et al. 2009

Int J RF and Microwave Comp Aid Eng

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“…First of all, the scalar symmetry is evident in Eqs. (7) and (8) due to the even powers of k x and k y . Here, due to the well-known issue of band gap underestimation in the DFT process, the value of the Γ-point band gap used is E g = 0.7 eV, 1,17 which is smaller than the ∼ 2 eV given by more sophisticated DFT+GW calculation.…”

Section: Diagonal Matrix Elementsmentioning

confidence: 99%

“…With Eqs. (2), (7) and (8), the 2 × 2 Hamiltonian Eq. (1) can be analytically diagonalized with the spectrum shown in Fig.…”

Section: Band Structure and Density Of States (Dos)mentioning

confidence: 99%

“…Group theory was first used to investigate the band structure symmetry of monolayer black phosphorus, 4 and was later applied to incorporate external effects, such as strain 5 , lattice vibration 6 and extrinsic spinorbit coupling. 7 In Ref. [4], the "method of invariants" 8 was implemented on a multiband Hamiltonian to examine lowest-order interband interactions, providing comprehensive understanding of the physics governing the anisotropy of features in the band structure, optical selection rules, and spin mixing.…”

Section: Introductionmentioning

confidence: 99%

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Origin of the electromagnetic anisotropy in monolayer black phosphorus

2019

Phys. Rev. B

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Contrary to empirical observations, lowest-order k ·p theory predicts that monolayer black phosphorus ("phosphorene") is completely immune to zigzag-polarized optical excitation at the bandgap energy. Using symmetry arguments, we derive a 2 × 2 Hamiltonian under the k ·p formalism including higher-order corrections, which is used to show that the experimentally-measured band-gap transition with zigzag polarization is dominated by the third order k·p perturbation in the interband optical matrix element, whereas the effects of spin-orbit interaction are negligible in this material, consistent with a trivial orbital diamagnetic contribution to the g-factor.arXiv:1908.10837v2 [cond-mat.mtrl-sci]

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