Circularly polarized slot antenna array with sequentially rotated feed network for broadband application

Karamzadeh, Saeid, Virdee, Bal Singh, Rafii, Vahid and Kartal, Mesut (2014) Circularly polarized slot antenna array with sequentially rotated feed network for broadband application. International Journal of RF and Microwave Computer-Aided Engineering, 25 (4). pp. 358-363. ISSN 1096-4290

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Abstract / Description

This article presents a novel circularly polarized sequentially rotated slot antenna array (CPSSAA) designed to operate at a frequency of 5.5 GHz. This antenna is suitable for communication applications such as WLAN/WiMAX. Method of feeding is based on sequential rotation with seven quarter-wavelength transformers. In this case, the elements with 200 Ω impedance could be replaced by other elements with different input impedance. Reducing the elements input impedance, maximum power can be transferred to the elements. Because the lower losses in transmission line occur in presence of lower impedance, the 3 dB axial-ratio bandwidth of the CPSSAA extends to ∼1.3 GHz. The CPSSAA was designed to operate over the frequency range between 4.5 and 6.4 GHz corresponding to an impedance bandwidth of 34.86% for VSWR < 2. Acceptable agreement between the simulation and measured results validates the proposed design.

Item Type:	Article
Uncontrolled Keywords:	planar antenna; slot antenna; array antenna; circularly polarized; feed network
Subjects:	600 Technology > 620 Engineering & allied operations
Department:	School of Computing and Digital Media
Depositing User:	Bal Virdee
Date Deposited:	21 Oct 2015 11:00
Last Modified:	21 Apr 2020 11:00
URI:	https://repository.londonmet.ac.uk/id/eprint/796

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