An Interdigitated Structure-Based, Electrically Small Dipole Antenna with Enhanced Bandwidth
- Publisher:
- IEEE
- Publication Type:
- Conference Proceeding
- Citation:
- 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings, 2021, 00, pp. 355-356
- Issue Date:
- 2021
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A wideband, electrically small dipole antenna with stable radiation performance is presented. Inspired by recently reported metasurface antennas, a coax-fed dipole antenna with periodic patches acting as near-field resonant parasitic (NFRP) elements is first developed. It exhibits operating mechanisms identical to those of the metasurface antennas and, thus, realizes a wide bandwidth and stable radiation patterns across it. Introducing interdigitated structures into the NFRP elements, an electrically small version is realized. A 14.4%, -10-dB fractional impedance bandwidth is achieved along with a stable realized gain, ∼ 1.5 dBi, over it. The antenna has potential applications in future wideband space-limited systems.
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