Comparison of the electromagnetic properties of building materials at 5.8 GHz and 62.4 GHz

Cuiñas, Íñigo; Pugliese, Jean‐Pierre; Hammoudeh, Akram; Sanchez, M.G.

doi:10.1109/vetecf.2000.887111

Cited by 18 publications

(11 citation statements)

References 7 publications

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“…As far as the brick wall is concerned, values of ε R and σ in Table 3 are not in full agreement with the existing experimental studies, where ε R values at millimeter frequencies between 2.55 [25] and 4.4 [27] have been found, and σ up to 1.4 S/m has been proposed [25]. A general, rather clear conclusion can be however drawn from the overall different investigations: if compared to the values commonly adopted at UHF frequencies (ε R ≈ 5, σ ≈ 10 -2 around 1 GHz [22,28]), the permittivity value at mm-wave is basically the same, whereas the conductivity is increased by one/two order of magnitude, that is also in agreement with the already discussed increase of the obstruction loss experienced at mm-waves.…”

Section: Rt Parameters Tuningcontrasting

confidence: 59%

“…Such approach has been also extended to the electromagnetic parameters of the OUT (relative permittivity-ε R -and electrical conductivity-σ), in order to estimate their values for the OUT never addressed so far (e.g., the monitor or the bookshelf ) or to consolidate their evaluation for the most common objects (like the wall sample and the wooden panel), still not reliably and extensively investigated at mm-waves in the few studies available in the literature ( [25][26][27] for a brick wall).…”

Section: Rt Parameters Tuningmentioning

confidence: 99%

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Item level characterization of mm-wave indoor propagation

Fuschini

Häfner

Zoli

et al. 2016

J Wireless Com Network

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According to the current prospect of allocating next generation wireless systems in the underutilized millimeter frequency bands, a thorough characterization of mm-wave propagation represents a pressing necessity. In this work, an "item level" characterization of radiowave propagation at 70 GHz is carried out. The scattering properties of several, different objects commonly present in indoor environment are investigated by means of measurements carried out in an anechoic chamber. The measured data have been also exploited to tune some parameters of a 3D ray tracing model.

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Section: Rt Parameters Tuningcontrasting

confidence: 59%

Section: Rt Parameters Tuningmentioning

confidence: 99%

Item level characterization of mm-wave indoor propagation

Fuschini

Häfner

Zoli

et al. 2016

J Wireless Com Network

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“…Typical relative permittivity and conductivity for different building materials are reported by [23] and [24] while a comparative study between 5.8 GHz and 62.4 GHz is given by [25]. ITU-R recommendation 2040-1 [26] provides an expression for the conductivity σ -which gives rise to the dB/m specific attenuation factor -as a function of frequency f in GHz Reported penetration losses at 60 GHz are on the order of some dBs for very thin plastic, wood or plaster partitions, 4 dB for a 0.7 cm single-panel tempered glass and 25 dB for a 9 cm indoor brick wall when both the transmit and receive antennas are vertically polarised [28] [29].…”

Section: Propagation Characteristicsmentioning

confidence: 99%

“…For outdoor urban databases, a good accuracy can be attained through aerial stereo photogrammetry instead of using satellite images, but even in this case the error still has a lower bound of about 0.5 m. The representation of the scenario must include both its geometrical and electromagnetic properties. For reference, the electrical permittivity and the conductivity values measured on some common building materials at millimetre frequencies are listed in Table 2 [24], [25], [58]- [60]. RT models represent an appropriate choice when it comes to deterministic, mm-wave propagation and channel modelling.…”

Section: A Deterministic and Semi-deterministic Modelsmentioning

confidence: 99%

Millimeter-Wave Propagation: Characterization and modeling toward fifth-generation systems. [Wireless Corner]

Salous

Degli-Esposti²,

Fuschini

et al. 2016

IEEE Antennas Propag. Mag.

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Abstract-The World Radiocommunications Conference WRC15 identified a number of frequency bands between 24-86 GHz as candidate frequencies for future cellular networks. In this paper an extensive review of propagation characteristics and challenges related to the use of millimetre wave in future wireless systems is presented. Reference to existing path loss models including atmospheric and material attenuation in recommendations of the International Telecommunication Union is given and the need for new multidimensional models and measurements is identified. A description of state of the art mm wave channel sounders for single and multiple antenna measurements is followed by a discussion of the most recent deterministic, semi-deterministic and stochastic propagation and channel models. Finally, standardization issues are outlined with recommendations for future research.

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“…In our simulation settings, the ray-tracer accounts for up to 6 reflections, 2 penetrations, and 1 diffraction for each ray. The material properties are frequency-dependent, and the parameters of dielectric constant ε r and conductivity σ in this paper are estimated for the 6 GHz spectrum band based on the material properties in different bands [36][37][38][39]. The buildings are assumed to be concrete with the dielectric constant ε r = 6 94 and σ = 0 73S/m, respectively.…”

Section: Measurement Setup and Environmentsmentioning

confidence: 99%

Channel Measurements and Modeling at 6 GHz in the Tunnel Environments for 5G Wireless Systems

Liu

Lin

et al. 2017

International Journal of Antennas and Propagation

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Propagation measurements of wireless channels performed in the tunnel environments at 6 GHz are presented in this paper. Propagation characteristics are simulated and analyzed based on the method of shooting and bouncing ray tracing/image (SBR/IM). A good agreement is achieved between the measured results and simulated results, so the correctness of SBR/IM method has been validated. The measured results and simulated results are analyzed in terms of path loss models, received power, root mean square (RMS) delay spread, Ricean K-factor, and angle of arrival (AOA). The omnidirectional path loss models are characterized based on close-in (CI) free-space reference distance model and the alpha-beta-gamma (ABG) model. Path loss exponents (PLEs) are 1.50-1.74 in line-of-sight (LOS) scenarios and 2.18-2.20 in non-line-of-sight (NLOS) scenarios. Results show that CI model with the reference distance of 1 m provides more accuracy and stability in tunnel scenarios. The RMS delay spread values vary between 2.77 ns and 18.76 ns. Specially, the Poisson distribution best fits the measured data of RMS delay spreads for LOS scenarios and the Gaussian distribution best fits the measured data of RMS delay spreads for NLOS scenarios. Moreover, the normal distribution provides good fits to the Ricean K-factor. The analysis of the abovementioned results from channel measurements and simulations may be utilized for the design of wireless communications of future 5G radio systems at 6 GHz.

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Comparison of the electromagnetic properties of building materials at 5.8 GHz and 62.4 GHz

Cited by 18 publications

References 7 publications

Item level characterization of mm-wave indoor propagation

Item level characterization of mm-wave indoor propagation

Millimeter-Wave Propagation: Characterization and modeling toward fifth-generation systems. [Wireless Corner]

Channel Measurements and Modeling at 6 GHz in the Tunnel Environments for 5G Wireless Systems

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