Browsing by Author "İmeci, Ş. T."

Now showing 1 - 6 of 6

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An antenna for implanted device systems
(IEEE, 2017) Zincircioglu, Emircan; Pekdemir, İsmail; Rzayew, Rafiq; Ilıksu, Emre; Dede, Merve; İmeci, Ş. T.; Durak, T.; Zincircioglu, Emircan; Pekdemir, İsmail; Rzayew, Rafiq; Ilıksu, Emre; Dede, Merve
In this study, we designed and simulated an embedded spiral-shaped microstrip patch antenna for medical biotelemetry applications. Important design parameters were studied to understand their effect on the antenna performance. The antenna is able to download patient's health information from the implanted devices. Sonnet Suite, a 3-D Planar Electromagnetic simulation tool is used for simulations. Simulated antenna has maximum gain of 6.6 dB with -13 dB input match at 8.87 GHz. The antenna impedance is easily adjusted by controlling the inner stub length.
Open Access
Design and comparison of 4 types of dual resonance proximity coupled microstrip patch antennas
(The Applied Computational Electromagnetics Society, 2018-10) Majidi, Negar; Sobhani, M. R.; Kılıç, B.; İmeci, M.; Güngör, O. S.; İmeci, Ş. T.; Majidi, Negar
In this paper there are four different shapes of proximity patch antennas (straight, trimmed, trapezoid and ribbon). The minimum input match achieved with the straight proximity patch antenna as -39.68 dB. The maximum gain is achieved with the ribbon proximity patch antenna as 12.1 dB. Simulation and measurement results are presented. There is a perfect match with simulated and measured gain. The antenna is first demonstrated example of working with four different geometries, having satisfactory gain and input match.
Open Access
Design and implementation of a quad element patch antenna at 5.8 GHz
(The Applied Computational Electromagnetics Society, 2018-10) Sobhani, M. R.; Majidi, Negar; İmeci, Ş. T.; Majidi, Negar
This paper presents simulation and experimental verification of a quad microstrip patch antenna that operates at 5.8 GHz. Sonnet antenna design software was used to simulate the performance of the antenna. To reduce the design's complexity and the computational load, the antenna and the feeding lines were simulated separately. An optimization was done for each subpart to get the optimum desired results. Finally, all the subparts were merged and the final structure was simulated to check the performance. A prototype of the antenna was fabricated on a double-sided PCB substrate (relative permittivity=10.2, thickness=1.28 mm) using a PCB milling machine. The S11 of -14 dB and -18.8 dB and maximum gain of 6.2 dB and 4.2 dB were obtained, from the simulation and experimental measurements, respectively.
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Dual-band gemini-shaped microstrip patch antenna for C-band and X-band applications
(IEEE, 2017) Djengomemgoto, Gerard; Altunok, Reha; Karabacak, Cem; İmeci, Ş. T.; Durak, T.; Djengomemgoto, Gerard; Altunok, Reha; Karabacak, Cem
In this paper, a novel single-layer Gemini-shaped patch antenna with dual-band characteristics is presented. The proposed patch antenna, with design operating frequencies of 6.53 GHz and 8.62 GHz, is targeted for applications in C-band and X-band. More importantly, the Gemini-shaped microstrip patch antenna exhibits a theta polarized radiation pattern with gains of 6.036 dBi and 9.556 dBi with corresponding reflection coefficients of -18.69 dB (VSWR = 1.263) and -24.31 dB (VSWR = 1.129) at 6.53 GHz and 8.62 GHz, respectively. The measurements of the fabricated patch antenna corroborate the simulation results obtained in Sonnet Suites version 16.52. This dual-resonance antenna, with comparatively high gain performance, can be easily integrated into systems for satellite and radar communications.
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F-Shaped Monopole Antenna
(IEEE, 2017) İncesulu, Hakan; Ulutaş, Gül; Bilge, Hakan; İmeci, Ş. T.; Durak, T.; İncesulu, Hakan; Ulutaş, Gül; Bilge, Hakan
In this paper, effects of F antenna arm length on the frequency, gain and s11 values are studied. The arms and the total length of the F determine the resonance frequency of the antenna. The inverted F shaped antennas are used in the cell phones. The outcome showed that the middle length of the antenna determines the input match and gain of the antenna. We achieved the highest gain of 6.32 dBi at 4.21 GHz frequency with input match of -16.91 dB.
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Rectangular slotted square patch antenna with a floating ring
(IEEE, 2017) Öztürk, Yasin Anıl; Sarı, Uğur; İmeci, Ş. T.; Durak, T.; Öztürk, Yasin Anıl; Sarı, Uğur
In this paper, a rectangular slotted square patch antenna with a floating ring and single point feed is presented. The proposed patch antenna, when optimized, achieved the highest gain of 7.17 dB at 7.12 GHz with -6.97 dB input match. Which presented theta polarized radiation pattern. Simulations conducted by changing the size of inner ring shape and high gains were observed between the frequencies of 7.08 and 7.13 GHz.