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A Broadband Magnetoelectric Dipole Antenna Using Capacitive Loading Feeding Structure
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TN822+.8

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    Abstract:

    A magnetoelectric (ME) dipole antenna with broadband characteristics simple in structure is designed, fabricated, and measured in this paper. This antenna being different from the common dipole antenna, two vertical aluminum plates are added in the traditional Г shaped feeding structure to improve impedance matching and impedance bandwidth. These plates form a set of capacitive loading to compensate the inductance effect of the original feeding structure at high frequencies, effectively broadening the impedance bandwidth of the antenna. The experimental results show that an impedance bandwidth of 92.5% for |S11|<-10 dB, ranging from 1.36 GHz to 3.7 GHz, is achieved. Besides, symmetrical radiation patterns with low cross polarization levels, high fronttoback ratios (FBRs) and gains with maximum value of 11dBi are realized within a range of the entire working band.

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  • Online: November 26,2020
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