Bandwidth Issues White Papers
Circularly Polarized Loop Antennas With a Parasitic Element for Bandwidth Enhancement
Overview In this paper, it is demonstrated that the bandwidth of Circular Polarization (CP) for a loop antenna can be significantly increased when adding one more parasitic loop inside the original loop. The axial ratio (AR¡?2 dB) bandwidth of the circular-loop antenna with a parasitic circular loop is found to be 20%, more than three times the AR bandwidth (about 6.5%) of a single loop. A bandwidth of 30% (AR¡?2 dB) with a gain of more than 10 dBi is obtained for a series-fed dual rhombic-loop antenna while a bandwidth of 50% for AR ¡?2 dB can be realized for the parallel-fed dual rhombic loop.
| Publisher | Georgia Institute of Technology | File Format | |
|---|---|---|---|
| Date Published | March 2005 | ||
| Format | White Papers | ||
| Topics | |||
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