Details

Autor(en) / Beteiligte

• Tran, Huy Hung
• Park, Ikmo
• Nguyen, Truong Khang

Titel

Circularly Polarized Bandwidth-Enhanced Crossed Dipole Antenna With a Simple Single Parasitic Element

Ist Teil von

• IEEE antennas and wireless propagation letters, 2017, Vol.16, p.1776-1779

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2017

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• A method of using a simple single parasitic element to significantly enhance a 3-dB axial-ratio (AR) bandwidth of a crossed dipole antenna is presented. This approach is verified by introducing one bowtie-shaped parasitic element between two arms of crossed bowtie dipoles to generate additional resonance and thereby significantly broadening AR bandwidth. The final design, with an overall size of 0.79 λ o × 0.79 λ o × 0.27 λ o (λ o is the free-space wavelength of circular polarized center frequency), resulted in very large measured -10-dB impedance and 3-dB AR bandwidths ranging from 1.9 to 3.9 GHz (~68.9%) and from 2.05 to 3.75 GHz (~58.6%), respectively. In addition, the antenna also yielded a right-hand circular polarization with stable far-field radiation patterns and an average broadside gain of approximately 8.2 dBic.