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Radiation Q and Gain of TM and TE Sources in Phase-Delayed Rotated Configurations

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1 Author(s)
Do-Hoon Kwon ; Electr. & Comput. Eng. Dept., Univ. of Massachusetts Amherst, Amherst, MA

The radiation quality factor and gain of antennas are compared for two source configurations between TM/TE-only spherical mode radiation and combined TM + TE mode radiation. It is shown that the change to the combined TM + TE mode radiation can reduce the quality factor by up to 50% and increase the gain by maximum 3 dB simultaneously. The condition for maximum gain increase provides a guideline for antenna designs for successfully achieving wide bandwidths and small sizes at the same time.

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Antennas and Propagation, IEEE Transactions on  (Volume:56 ,  Issue: 8 )