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Design of microstrip linear phased array antenna using integrated array feeder

Ali, Mir Riyaz (2005) Design of microstrip linear phased array antenna using integrated array feeder. Masters thesis, King Fahd University of Petroleum and Minerals.

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English Abstract

Antennas play an integral part in wireless communication system. Microstrip patch antennas are versatile in terms of their geometrical shapes and implementations. Inhibiting characteristics of a single microstrip patch, like low gain and smaller bandwidth, make it more popular for array configuration. The aim of this work is to design and implement a microstrip phased array antenna, printed on a composite ferrite-dielectric substrate. Pour rectangular radiating patches on a low dielectric constant substrate are arranged in linear configuration to achieve required radiation properties. The microstrip array feeder network, consisted of integrated power divider and phase shifters, is realized on an externally magnetized ferrite substrate. Tunable progressive phase shift is produced by varying the magnetic bias that changes the permeability of ferrite material, which in tern changes the phase velocity and, hence, the insertion phase of the propagating microwave signal. The four-way power splitter is attained using Wilkinson type power dividers, which improves the isolation and matching of the ports. The antenna prototype is printed using the PCB plotter and manually transferred on the composite substrate, which introduced some inaccuracy. Finally, the simulated reflection response and radiation characteristics of the designed antenna array are corroborated using experimental results obtained from the Network Analyzer and the Antenna Transmission & Measurement System, respectively. The designed array exhibited very close radiation response to that of design objective.



Item Type:Thesis (Masters)
Date:December 2005
Date Type:Completion
Subjects:Electrical
Divisions:College Of Engineering Sciences > Electrical Engineering Dept
Creators:Ali, Mir Riyaz
Committee Advisor:Iqbal, Sheikh Sharif
Committee Members:Dawoud, Mahmoud M. and Yamani, Ahmed R.
ID Code:9711
Deposited By:KFUPM ePrints Admin
Deposited On:22 Jun 2008 16:47
Last Modified:25 Apr 2011 09:19

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