Inexpensive and Easy Fabrication of Multi-Mode Tapered Dielectric Circular Probes at Millimeter Wave Frequencies

Zhu, Bin; Stiens, Johan; Matvejev, Vladimir; Vounckx, Roger

doi:10.2528/pier12010203

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…With the fabrication constraints almost gone, circuits at millimeter and submillimeter frequencies are becoming the main topic for many scientists. Factors such as size reduction, higher data rate transmissions, increased security of communications or high spatial resolution play a decisive role in applications oriented toward imaging, medicine, satellite communications, security and defense [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Millimeter Wave Subharmonic Mixer Implementation Using Graphene Film Coating

Hotopan¹,

Hoeye²,

Vázquez³

et al. 2013

PIER

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In this work, a subharmonic frequency mixer for millimeter wave applications has been designed. The mixing and multiplication phenomena are simultaneously achieved via a nonlinear component consisting in a microstrip line gap covered by a graphene film coating. The circuit structure is made up of various filters, which have been optimized to ensure high port-to-port isolation. The nonlinear behavior of the subharmonic frequency mixer has been experimentally evaluated within the 39-40.5 GHz RF frequency band. The frequency downconversion is achieved by mixing the RF signal with the second harmonic component of a 17.9 GHz LO signal. Conversion losses are minimized by generating a return path for IF, through the use of a quarter wavelength open-ended stub.

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Section: Introductionmentioning

confidence: 99%

Millimeter Wave Subharmonic Mixer Implementation Using Graphene Film Coating

Hotopan¹,

Hoeye²,

Vázquez³

et al. 2013

PIER

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“…Substantial amount of research on optical waveguides with varieties of new forms of cross-sectional geometries and/or composite materials appeared in the literature [1][2][3][4][5][6][7][8][9][10]. The electromagnetic (EM) behavior of various forms of optical fibers with different refractive index (RI) profiles and/or number of claddings have been paid much attention [11][12][13][14][15][16]. However, the reported investigations mostly implement oversimplified assumptions, because a strict analytical approach, owing to the presence of multiple fibre clads, becomes forbiddingly difficult to tackle with.…”

Section: Introductionmentioning

confidence: 99%

Dispersion Behavior of Gold-Nanocoated Dielectric Optical Fibers

Choudhury

2012

Advances in Materials Science and Engineering

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Using a fairly rigorous approach, gold-nanocoated dielectric optical fibers are treated to evaluate the propagation characteristics corresponding to the transverse electric (TE) and hybrid EH modes, as supported by the guides with small and large dimensions. Situations with varying nanocoating thickness are considered for two different operating wavelengths. The results demonstrate a profound effect of the gold nanocoating on the propagation-related features—the number of existing modes decreases with increasing nanolayer thickness. Furthermore, the gold nanolayer also has effects on the modal propagation constants, which become more prominent with the increase in the order of modes. It has been found that, in fiber with smaller dimension, the EH11mode hardly exhibits any effect due to the variation in existing nanolayer coating corresponding to 850 nm wavelength. Almost similar situations are observed for the TE01mode in large core fiber operating at 1550 nm wavelength.

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“…Hence, the confinement of power in a region of air by non-conducting materials may decrease noticeably the attenuation of the waveguide. The resulting structure may be specially useful in highly sensitive applications [13], in the design of horn antennas with an enhanced efficiency [14] or in near-field probing systems [15].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the E-Plane Loaded Rectangular Waveguide for Low-Loss Propagation

Sánchez‐Escuderos¹,

Ferrando‐Bataller²,

Herranz³

et al. 2013

PIER

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Abstract-The insertion of vertical slabs in a metallic rectangular waveguide distorts the power distribution of the waveguide, producing new modes and modifying the existing ones. The resulting waveguide, known as E-plane loaded rectangular waveguide, is studied in this paper, focusing the attention on the TE-type modes in a symmetrical case. A quasi-TE 10 is found which may confine the energy in the central air region by suitably choosing the dielectric slabs' dimensions. An algorithm to optimize these dimensions is proposed in order to maximize the confinement of power in the air region and minimize the attenuation of the mode. This minimization is specially important at high frequencies, where the ohmic losses and the dielectric absorption become extremely high. This paper includes an example at THz frequencies and presents the design of several devices using the E-plane loaded rectangular waveguide.

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Inexpensive and Easy Fabrication of Multi-Mode Tapered Dielectric Circular Probes at Millimeter Wave Frequencies

Cited by 8 publications

References 20 publications

Millimeter Wave Subharmonic Mixer Implementation Using Graphene Film Coating

Millimeter Wave Subharmonic Mixer Implementation Using Graphene Film Coating

Dispersion Behavior of Gold-Nanocoated Dielectric Optical Fibers

Optimization of the E-Plane Loaded Rectangular Waveguide for Low-Loss Propagation

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