Multiband Antenna for Modern Wireless Communication

Multiband Antenna for Modern Wireless Communication

Nassrin Elamin (International University of Africa, Sudan) and Tharek Rahman (Universiti Teknologi Malaysia (UTM), Malaysia)
DOI: 10.4018/978-1-4666-8645-8.ch004
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Wireless technology lately became subjected to the rapid enormous changes in frequency allocation, policies and procedures of operations, and techniques in order to enhance the performance of the wireless system as whole. A lot of wired applications are converted into wireless, for example wired LAN is turned into a wireless, which due to the huge sophisticated researches. Currently due to the advanced of the integrated technology, engineers are able to fit many diversified applications working at different frequencies in one wireless device. Consequently an increased demand for multiple antennas covering different wireless communication bands on the same platform increased extremely.
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1. Slot Patch Antenna

Designing of a multiband antenna could be made by simply creating slots over a patch antenna (Maci, 1995, p. 225), such as U-slot patch antenna (Khodae, 2008, p. 47, Weigand, 2003, p. 457, Tong, 2000 p. 954), E-slot microstrip patch antenna, (Ang, 2007, p. 397) and C-slot. However, patch antennas have narrow BW (Band Width) limitation. Usually the BW is lower than the required uplink or downlink of one of LTE-FDD application band. Consequently, comparing the LTE wide band antennas the slot patch multiband antennas cover very few of application frequency bands (Lizzi, 2011, p. 760, Abutarboush, 2012, p. 36).

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