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The paper presents a unique omnidirectional three-element dipole array that can be adjusted to provide vertical, horizontal, or circular polarization for a variety of wireless applications. The 2:1 voltage standing wave ratio bandwidth of the antenna over all configurations is greater than 10%, but performance data is presented for the personal communication services (PCS) band (1850-1990 MHz).
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Jarrett D. Morrow (2003) studied this question.
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