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A new planar array antenna with special beam shaping for ETCS-RSE (Electronic Toll Collection System-Road Side Equipment) is presented. The proposed 10×10 array antenna was obtained flat-topped radiation pattern by using Woodward and Lawson pattern synthesis. The measured electrical performances of the fabricated antenna in an operating band of 5.79 ∼ 5.85 GHz showed VSWR of less than 1.72, antenna...
In this paper, null steering to reject interference is investigated for linear phased array antenna using genetic algorithm (GA). The GA adjusts the amplitude and the phase of each radiating element to minimize the total output power in the direction of the interfering signals. The cost function is derived to maximize the ratio between the power of the desired signal and that of the interference signal...
In this paper, a broadband 4-way power divider which can be used from 20 MHz to 500 MHz in the V/UHF band is designed using bridge configuration, transmission-line transformer and ferrite toroid. A 4:1 impedance transformer is realized and this transformer is connected to bridge-type 2-way dividers to form a 4-way power divider. This 4-way high-power divider has power tolerance up to 100 W. Insertion...
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