SAR analysis in human head model exposed to mobile base-station antenna for GSM-900 band

Ali, Md. Faruk; Mukherjee, Sujoy; Ray, Sudhabindu

doi:10.1109/lapc.2009.5352413

Cited by 5 publications

(2 citation statements)

References 9 publications

(10 reference statements)

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“…The specific absorption rate (SAR) of the antenna has also been calculated using full‐wave simulator. The human head has been modeled with a sphere of radius 7.5 cm with ε r = 51, μ r = 1 and σ = 1.5 S/m . The simulation result has been presented in Figure .…”

Section: Resultsmentioning

confidence: 99%

Antenna design using speaker wire for a Bluetooth ear set

Zahid

Lee

Kim

et al. 2018

Micro & Optical Tech Letters

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In this article, an antenna design using an audio wire is proposed for a compact Bluetooth ear set. The length of the audio wire is less than a quarter of a wavelength in Bluetooth ear sets. Therefore, an appropriate feed structure needs to be designed to utilize the wire as an antenna. The antenna has been tuned using an inductor and impedance matching is accomplished by a loop‐type feeding structure with lumped capacitors. The feeding structure can be used to tune various lengths of the antenna. Full wave simulations are conducted to observe the effectiveness of the proposed technique. The measured and simulated bandwidths of the antenna are in good agreement. The measured bandwidth and average efficiency of the antenna were 116 MHz and 54.74%, whereas the average total isotropic sensitivity was 80.12 dBm that comply with the desired criteria for operation of the Bluetooth ear set.

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Section: Resultsmentioning

confidence: 99%

Antenna design using speaker wire for a Bluetooth ear set

Zahid

Lee

Kim

et al. 2018

Micro & Optical Tech Letters

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“…The number of cell towers is increasing rapidly, and electromagnetic (EM) waves emitted from the Base Station Antennas (BSAs) may have adverse effects on human beings or on other living animals [1][2][3][4][5]. It has also been reported that continuous exposure to microwave radiation from cell phone towers causes serious health problems over the years [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Study of Em Wave Absorption and Shielding Characteristics for a Bonsai Tree for GSM-900 Band

Ali¹,

Ray²

2014

PIER C

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Abstract-Electromagnetic (EM) wave absorption characteristics for a Bonsai tree are investigated at GSM-900 band. Finite Difference in Time Domain (FDTD) method is hybridized with Friis transmission equation to carry out all the required EM simulations. The tree has been modelled using CT scan based 3D dataset considering different electrical parameters. Maximum local electric (E) field, magnetic (H) field, Specific Absorption Rate (SAR) and Shielding Effectiveness (SE) have been calculated for the tree placing at distance of 5 m away from a radiating Base Station Antenna (BSA) with 20 W input power. The maximum local E field, H field, 1-g SAR and SE obtained by the simulation are found to be 70.1 V/m, 0.09 A/m, 0.135 W/kg and 13.18 dB, respectively. Plants are found to be good natural electromagnetic radiation shield.

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