Browsing by Author "Yegin, Korkut"

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    Citation - WoS: 1
    A Numerical Parametric Study of SAR from a Dual-Band PIFA Based Antenna for Mobile Communication
    (IEEE, 2017) Serdar Okuyucu; Mustafa Secmen; Korkut Yegin; Basak Ozbakis; Ozbakis, Basak; Secmen, Mustafa; Yegin, Korkut; Ozbakts, Basak; Okuyucu, Serdar
    Specific Absorption Rate (SAR) analysis is a vital part of compliance tests for commercial mobile phones performed in accordance with the set of comprehensive standardized practices provided by authoritative bodies. Dependence of SAR on a variety of parameters with the structure of the handset pronounced the most calls for bringing in the SAR analysis of various types of phones into the field of study for reference. This paper focuses on the SAR analysis of a PIFA based mobile phone antenna when operated next to standardized and anatomically correct head models. The effect of averaging method used positioning of the phone frequency of operation and the presence of a homogeneous hand model on SAR is investigated along with the antenna performance in terms of terminal and radiational characteristics.
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    Citation - Scopus: 1
    Multi-band frequency tunable LTE antenna for mobile phone applications
    (Electromagnetics Academy chew@jpier.org Suite 207777 Concord Avenue Cambridge MA 02138 USA 02138 Massachusetts, 2017) Basak Ak Ozbakis; Serdar Okuyucu; Mustafa Seçmen; Korkut Yeǧin; Ozbakis, Basak; Secmen, Mustafa; Yegin, Korkut; Okuyucu, Serdar; W.C. Chew , S. He , S. He
    The progress shown in mobile phone technology in dealing with multiple band transmission and high data transmission rates has been followed by an increased demand in favor of rich content mobile services and new functionalities. To provide these services multi-band and wide-band antennas have to be integrated into the compact structure of modern mobile phones. In this paper as part of the results of a research project we propose a multi-band frequency reconfigurable main antenna along with a receive diversity antenna for use in 4G (4th generation) mobile terminals. The main antenna is a Planar Inverted F Antenna (PIFA) mounted on bottom of the mobile phone and grounded by a variable reactance for operation in 790-960 MHz and 1710-2690 bands covering GSM DCS PCS and UMTS standards. The receive diversity antenna on the other hand is a monopole antenna to be operated in the 1710-2690 MHz band. Use of LDS (laser direct structuring) structure in both antennas are proposed for fine-tuning of their response. Simulated frequency responses of reflection coefficients and radiation patterns of the prototype antennas are given. © 2018 Elsevier B.V. All rights reserved.