Nasirian, Marzieh, Zaker Hossein, Firouzeh, Maddah-Ali, Mohsen, Askari, Gholam Reza (2014). Design guidelines for proximity coupled U-slot microstrip antennas. , 14(2), 1-9.
Marzieh Nasirian; Firouzeh Zaker Hossein; Mohsen Maddah-Ali; Gholam Reza Askari. "Design guidelines for proximity coupled U-slot microstrip antennas". , 14, 2, 2014, 1-9.
Nasirian, Marzieh, Zaker Hossein, Firouzeh, Maddah-Ali, Mohsen, Askari, Gholam Reza (2014). 'Design guidelines for proximity coupled U-slot microstrip antennas', , 14(2), pp. 1-9.
Nasirian, Marzieh, Zaker Hossein, Firouzeh, Maddah-Ali, Mohsen, Askari, Gholam Reza Design guidelines for proximity coupled U-slot microstrip antennas. , 2014; 14(2): 1-9.

Design guidelines for proximity coupled U-slot microstrip antennas

The Modares Journal of Electrical Engineering
Article 1, Volume 14, Issue 2, 2014, Pages 1-9    PDF (911.34 K)
Authors
Marzieh Nasirian* 1; Firouzeh Zaker Hossein2; Mohsen Maddah-Ali2; Gholam Reza Askari3
1MSc., Electrical engineering, communication - Field and wave Dept. of Electrical and Computer Engineering,Isfahan University of Technology (IUT)
2PhD., Electrical engineering, communication - Field and wave Assistant professor, Dept. of Electrical and Computer Engineering, Isfahan University of Technology (IUT)
3MSc., Electrical engineering, communication - Field and wave Instructor, Information and Communication Technology Institute (ICTI), Isfahan University of Technology (IUT)
Abstract
The frequency bandwidth of microstrip patch antennas can be increased using both of U-slot and proximity feeding. Although some design rules have been already explained for the probe-fed U-slot antenna the proximity coupling causes to consider a lot of parameters for design procedure; consequently, to deal with all of them seems confusing. In this paper after investigating the effect of various parameters on the multiple resonant frequencies of the antenna and recognizing the most effective factors, some guidelines to design a proximity coupled U-slot microstrip antenna are proposed. In addition, an antenna element with 16% impedance bandwidth is designed at center frequency of 16.7GHz, and its broadband impedance and radiation characteristics are vastly considered. Also, 1×2 and 2×2 arrays of the antenna element are designed to use as subarrays for designing large arrays. The measurement results of return loss and radiation pattern, show good agreement with simulation results.
Keywords
microstrip antenna; U-slot; proximity coupled feed; wide band
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