An analysis of copper surface roughness effects on signal propagation in PCB traces

Guo, Xichen; Jackson, David R.; Chen, Ji

doi:10.1109/wmcas.2013.6563552

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…1(d) will require a full knowledge of some properties such as conductivity of the metal layer, its thickness, the permittivity of the substrate and its dielectric losses. The roughness of the PCM material must be also known, as it may modify the effective permittivity of the line and the conductivity of the metallisation [33], [34].…”

Section: Extraction Of the Permittivity Of The Pcm Layer Frommentioning

confidence: 99%

Dielectric Properties of Phase Change Thin Films at Millimeter Waves

Carrizales-Juarez

Huitema

Passerieux

et al. 2023

IEEE Trans. Microwave Theory Techn.

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We present the characterization of the dielectric permittivity and loss tangent of germanium telluride (GeTe) and germanium antimonium telluride (Ge2Sb2Te5-GST) phase change thin-films (less than 1 μm thicknesses) in the millimeter-wave (mmW) domain. The dielectric permittivities in the amorphous (insulator) state of GeTe and GST were measured using two independent differential methods: a wide bandwidth characterization based on the measurement of the propagation constant of a coplanar waveguide and a single frequency characterization based on the measurement of the resonant frequency of a planar resonator. This differential approach allows us to extract the permittivity of the thin film without taking into consideration other parameters of the circuit like the conductivity and the thickness of the metals as well as the losses of the substrate and their permittivity. The extracted mean values range between are 20-22 for the GeTe and 30-34 for the GST. These values are rather constant over the frequency range from 10 GHz to 60 GHz. Additionally, the loss tangent at 30 GHz of both compositions was extracted giving values of 3.4x10 -2 and 3.2x10 -1 for the GeTe and GST, respectively. These values are among the first reported ones regarding the electromagnetic properties of GeTe and GST in this frequency band.

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Section: Extraction Of the Permittivity Of The Pcm Layer Frommentioning

confidence: 99%

Dielectric Properties of Phase Change Thin Films at Millimeter Waves

Carrizales-Juarez

Huitema

Passerieux

et al. 2023

IEEE Trans. Microwave Theory Techn.

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“…The flexible substrate used is Rogers Ultralam 3850HT [9]. The electric properties of the selected substrate were calculated considering the roughness of the double cladding laminated [10,11]. Here, r =2.6 and tanδ=0.03 is obtained.…”

Section: Antenna Designmentioning

confidence: 99%

Ultra slim and small UHF RFID tag design for mounting on curved surfaces

Peña

Oliveira

Silva

et al. 2021

AEU - International Journal of Electronics and Communications

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Plastic and metal additive manufacturing technologies for microwave passive components up toKaband

Sence¹,

Feuray²,

Perigaud³

et al. 2018

Int. J. Microw. Wireless Technol.

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This paper illustrates the different possibilities given by additive manufacturing technologies for the creation of passive microwave hardware. The paper more specifically highlights a prototyping scheme where the 3D-printed plastic parts can be used as initial proofs of concept before considering more advanced 3D-printed parts (metal parts, for instance). First, a characterization campaign has been made on common plastics used by a 3D printer using the fused deposition modeling and material jetting (Polyjet©) technologies. The impact of the manufacturing strategy (high-speed or high-accuracy) on the part roughness, as well as on the dielectric material permittivity and loss tangent, has been specifically studied at 10 and 16 GHz. Based on a specifically optimized and deeply explained characterization method, the conductivity of a coating based on silver paint has also been characterized on such plastic parts at 10 and 40 GHz. These plastic materials and coating have been used for the creation of quasi-elliptic and tuning-free bandpass filters centered at 6 and 12 GHz and compared with a similar filter made of stainless steel by selective laser melting. Finally, a compact rectangularTE10to circularTE01mode converter also undergoes one prototyping step out of plastic before moving to an advanced part made out of stainless steel. This mode converter, which is made in a single part, is designed to operate from 28 to 36 GHz as a tuning-free final demonstrator.

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An analysis of copper surface roughness effects on signal propagation in PCB traces

Cited by 3 publications

References 9 publications

Dielectric Properties of Phase Change Thin Films at Millimeter Waves

Dielectric Properties of Phase Change Thin Films at Millimeter Waves

Ultra slim and small UHF RFID tag design for mounting on curved surfaces

Plastic and metal additive manufacturing technologies for microwave passive components up toKaband

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