Dielectric properties of tissue equivalent liquids at ratio frequency

Fukunaga, Kaori; Watanabe, Soichi; Yamanaka, Yasumitsu; Asou, Hiroyuki; Ishii, Yuri; Satou, Keisuke; Miyota, Y.

doi:10.1109/icpadm.2003.1218600

Cited by 4 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The frequency dependent parameters permittivity and conductivity of human tissues was considered, and the respective values are based on human tissue measurement data as described in [16], [17]. Table 2 indicates the dielectric properties of head and hand phantom for different frequency of exposure.…”

Section: Models and Methodsmentioning

confidence: 99%

Low SAR Microstrip Patch Antenna for Mobile Phone

2015

View full text Add to dashboard Cite

The aim of this article is to design a new microstrip-fed patch antenna for cell phone applications. The antenna design is composed of slots and FR-4 dielectric substrate fed by a partial ground plane and a microstrip line. The user's effects on antenna performances are also analyzed using standard SAM phantom. The specific absorption rate (SAR) values of proposed antenna are evaluated for different frequency bands considering cheek position of talk mode. The proposed antenna has an impedance bandwidth (-10 dB reflection coefficients) 100 MHz (0.87-0.97 GHz, lower band), 50 MHz (1.47-1.52 GHz, middle band), and 150 MHz (1.78-1.93 GHz, upper band), which can cover GSM 900 MHz, GPS 1,500 MHz, DCS 1,800 MHz, PCS 1,900 MHz, and GSM 1,900 MHz bands. Moreover, the proposed antenna produces lower SAR values in the human head than that of a dipole and helical antenna.

show abstract

Section: Models and Methodsmentioning

confidence: 99%

Low SAR Microstrip Patch Antenna for Mobile Phone

2015

View full text Add to dashboard Cite

show abstract

“…We take into consideration the permittivity and conductivity of human tissues which are frequency determined parameters [16], and the respective values are constructed on human tissue measurement data as labeled in [17][18]. Table 1 indicates the insulator properties of head and hand phantom for dissimilar frequencies.…”

Section: Mobile Antenna With a Head Handmentioning

confidence: 99%

SAR Calculations of Novel Dual-band PIFA for Mobile Phone Applications

Ali

Ahmed

El-Deeb

et al. 2019

CJAST

View full text Add to dashboard Cite

Aims: The objective of this paper is to design a new PIFA for cell phone applications with low SAR. Study Design: The designed PIFA antenna involves a patch with slots on the upper side of first substance layer FR-4, shorting wall, and a ground plane in the bottom side of second substance layer FR-4 and exciting (feeding port). Place and Duration of Study: Department of Electronics and Communication Engineering, Faculty of Engineering, University of Zagazig. Between December 2017 to March 2019. Methodology: it will be utilized SAM head model and a hand phantom as a user’s head and hand. Time-domain solver considers hexahedral mesh with adaptive meshing scheme used in this simulation. Results: The simulation result has been obtained using MWS CST tools which constructed on the finite integration technique. And the measurement results are accomplished with vector analyzer ZVA 67. The simulated and the investigational results are the same approximately. Conclusion: The antenna provides high gain for both frequency bands (900MHZ and 1800MHZ) with approximately 90% radiation efficiency. Moreover, The SAR analysis of the suggested antenna clearly demonstrates little SAR characteristics suitable for human usage competed with the standards of the safe SAR values.

show abstract

“…As the human tissue parameters are frequency dependent, the dispersive material model is considered in the simulation of the cell phone with the head and hand phantom. The frequency dependent parameters permittivity and conductivity of human tissues was considered, and the values are based on human tissue measurement data as described in . The Computer Simulation Technology Microwave Studio (CST MWS) based on finite‐integral time‐domain technique is utilized in this investigation.…”

Section: Sar Analysismentioning

confidence: 99%

Miniature low SAR printed monopole antenna for mobile phone

Hossain

Faruque

Islam

2015

Micro & Optical Tech Letters

View full text Add to dashboard Cite

A multiband compact printed monopole antenna is proposed for mobile phone. In this configuration, the antenna comprises a slotted rectangular-shaped radiator, microstrip-fed line, and a slotted ground plane on FR-4 substrate. The total antenna dimensions with ground plane are 78 3 40 3 0.8 mm 3 . The measured results show that the proposed antenna has an impedance bandwidth 358.4 MHz (0.60-0.95 GHz, lower band), and 1 GHz (1.7-2.7 GHz, upper band), which can cover GSM II.b (2400 MHz), and LTE (2300-2400 MHz) bands. The proposed antenna shows very good radiation efficiencies and gain values and near omnidirectional radiation patterns at those frequency bands. Moreover, the proposed antenna produces lower specific absorption rate values in the human head than that of a dipole antenna, helical antenna, and planar inverted-F antenna.

show abstract

Dielectric properties of tissue equivalent liquids at ratio frequency

Cited by 4 publications

References 4 publications

Low SAR Microstrip Patch Antenna for Mobile Phone

Low SAR Microstrip Patch Antenna for Mobile Phone

SAR Calculations of Novel Dual-band PIFA for Mobile Phone Applications

Miniature low SAR printed monopole antenna for mobile phone

Contact Info

Product

Resources

About