Yıl 2017, Cilt 9 , Sayı 2, Sayfalar 92 - 102 2017-06-15

Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles
Farklı Mesafe ve Açılarda RF Yayılımına Maruz Kalan İnsan Kafasındaki Sıcaklık ve Özgül Soğurma Oranı Dağılımı

Fulya ÇALLIALP KUNTER [1] , Funda CIRIK ACIKAYA [2]


This paper presents specific absorption rate (SAR) obtained inside a human head and the thermal effects due to exposure to a cellular phone. The cellular phone radiating at 900 MHz and 1800 MHz frequencies was modeled by microstrip patch antenna and its output power was chosen according to the worst-case scenario. By the aid of finite element method (FEM) based COMSOL Multiphysics software program, not only the effect of distance between the antenna and the head model but also the effect of antenna’s angle relative to the head on SAR and the temperature distribution in the head model were investigated. It was shown in the study that the distance and the angle of the antenna to the head had significant importance on the SAR values and the temperature increase in the head. As a result of the simulation, it was found that SAR values at 900 MHz were under the safety limit values whereas at 1800 MHz were under the limits when the distance between the antenna and the head was 0.2 cm. Furthermore, it was noted that the temperature increase on the head was in good agreement with the other studies.

Bu makale, insan kafası içerisinden elde edilen özgül soğurma oranı (ÖSO) ve cep telefonlarındaki elektrik alan maruziyetinin sebep olduğu ısıl etkileri sunmaktadır. 900 MHz ve 1800 MHz frekanslarında yayınım yapan cep telefonları mikrostrip patch anten ile modellenmiş ve çıkış güçleri olabilecek en kötü durum senaryosuna göre seçilmiştir. Sonlu elemanlar yöntem (SEY) tabanlı COMSOL Multiphysics yazılım programı yardımıyla, kafa modelindeki ÖSO ve sıcaklık dağılımları üzerinde, sadece anten ile kafa modeli arasındaki mesafenin etkisi değil, aynı zamanda kafaya göre antenin açısının etkisi de incelenmiştir. Çalışmada gösterilmiştir ki, antenin kafaya göre mesafe ve açısının, kafadaki ÖSO değerleri ve sıcaklık artışında önemli bir etkisi vardır. Benzetim sonucunda, ÖSO değerlerinin 900 MHz’de güvenlik sınır değerlerinin altında iken 1800 MHz’de antenin kafadan olan uzaklığı 0,2 cm olduğunda sınır değerlerinin altında olduğu bulunmuştur. Buna ek olarak,  kafadaki sıcaklık artışının diğer yapılan çalışmalarla oldukça uyumlu olduğu not edilmiştir.

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Bölüm Makaleler
Yazarlar

Yazar: Fulya ÇALLIALP KUNTER

Yazar: Funda CIRIK ACIKAYA

Tarihler

Yayımlanma Tarihi : 15 Haziran 2017

Bibtex @araştırma makalesi { umagd352469, journal = {International Journal of Engineering Research and Development}, issn = {}, eissn = {1308-5514}, address = {Kırıkkale Üniversitesi Mühendislik Fakültesi Dekanlığı Kampüs 71450 Yahşihan/KIRIKKALE}, publisher = {Kırıkkale Üniversitesi}, year = {2017}, volume = {9}, pages = {92 - 102}, doi = {10.29137/umagd.352469}, title = {Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles}, key = {cite}, author = {ÇALLIALP KUNTER, Fulya and CIRIK ACIKAYA, Funda} }
APA ÇALLIALP KUNTER, F , CIRIK ACIKAYA, F . (2017). Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles. International Journal of Engineering Research and Development , 9 (2) , 92-102 . DOI: 10.29137/umagd.352469
MLA ÇALLIALP KUNTER, F , CIRIK ACIKAYA, F . "Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles". International Journal of Engineering Research and Development 9 (2017 ): 92-102 <https://dergipark.org.tr/tr/pub/umagd/issue/31737/352469>
Chicago ÇALLIALP KUNTER, F , CIRIK ACIKAYA, F . "Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles". International Journal of Engineering Research and Development 9 (2017 ): 92-102
RIS TY - JOUR T1 - Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles AU - Fulya ÇALLIALP KUNTER , Funda CIRIK ACIKAYA Y1 - 2017 PY - 2017 N1 - doi: 10.29137/umagd.352469 DO - 10.29137/umagd.352469 T2 - International Journal of Engineering Research and Development JF - Journal JO - JOR SP - 92 EP - 102 VL - 9 IS - 2 SN - -1308-5514 M3 - doi: 10.29137/umagd.352469 UR - https://doi.org/10.29137/umagd.352469 Y2 - 2017 ER -
EndNote %0 Uluslararası Mühendislik Araştırma ve Geliştirme Dergisi Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles %A Fulya ÇALLIALP KUNTER , Funda CIRIK ACIKAYA %T Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles %D 2017 %J International Journal of Engineering Research and Development %P -1308-5514 %V 9 %N 2 %R doi: 10.29137/umagd.352469 %U 10.29137/umagd.352469
ISNAD ÇALLIALP KUNTER, Fulya , CIRIK ACIKAYA, Funda . "Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles". International Journal of Engineering Research and Development 9 / 2 (Haziran 2017): 92-102 . https://doi.org/10.29137/umagd.352469
AMA ÇALLIALP KUNTER F , CIRIK ACIKAYA F . Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles. IJERAD. 2017; 9(2): 92-102.
Vancouver ÇALLIALP KUNTER F , CIRIK ACIKAYA F . Temperature and Specific Absorption Rate Distribution in the Human Head Exposed to RF Propagation at Different Distances and Angles. International Journal of Engineering Research and Development. 2017; 9(2): 102-92.