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Dual band low-profile switched beam Square Loop Antenna with capacitively coupled feeds

Pal, A and Mehta, A and Mirshekar-Syahkal, D (2014) Dual band low-profile switched beam Square Loop Antenna with capacitively coupled feeds. In: UNSPECIFIED, ? - ?.

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Abstract

© 2014 European Association on Antennas and Propagation. A low profile dual-band switched beam Square Loop Antenna (SLA) with capacitively coupled feeds is presented. Two co-centered square loops are capacitively coupled to the four vertical feeding probes by four rectangular feeding patches. The capacitively coupled feeding mechanism introduces capacitance into the antenna input impedance and cancels the high inductance due to the feeding probe and the close proximity of the ground plane. This feeding technique allows the antenna to be matched to a 50 ohm feed line and helps in the realization of a low profile SLA. The antenna has a height of 6 mm and it is developed for operating in 3.1 GHz and 3.8 GHz frequency bands. In both frequency bands when any of the four ports is excited, keeping other ports open circuited, the antenna generates a radiation beam tilted by 31 degrees from the broadside and directed away from the excited port, having a maximum directivity of 9.1 dBi. Thus by exciting one port at a time, the antenna can steer its tilted beam in four different quadrants to scan the entire space in front of antenna.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published proceedings: 8th European Conference on Antennas and Propagation, EuCAP 2014
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Jim Jamieson
Date Deposited: 04 Dec 2014 16:20
Last Modified: 17 Aug 2017 17:43
URI: http://repository.essex.ac.uk/id/eprint/11991

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