A Wideband Dual-Polarized Dipole Antenna With Folded Metallic Plates

• Published in: IEEE antennas and wireless propagation letters Vol. 17; no. 10; pp. 1797 - 1801
• Main Authors: Yang, Wanjun, Pan, Yongmei
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-10-2018; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Aerospace industry; Antennas; Bandwidth; Bandwidths; Broadband; Broadband antennas; Dipole antenna; Dipole antennas; Dipoles; Dual polarization (waves); dual-polarized antenna; folded metallic plates; Frequency measurement; Gain measurement; Ground plane; Impedance; Impedance measurement; Metal plates; Parasitic elements (antennas); Prototypes; wideband antenna
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2018.2867464

A wideband dual-polarized dipole antenna with fourfolded metallic plates is proposed in this letter. The folded metallic plates are vertically placed on the ground plane, under the dipole arms. Owing to the coupling with the nearby dipoles, an additional resonance beside the original impedance passband of the dipole antenna can be generated by the parasitic plates, leading to a very wide operating bandwidth. A prototype was fabricated and tested to verify the design. The measured results show that the prototype has a −10 dB impedance bandwidth of about 92%, a port isolation of over 20 dB, and an average gain of 6.2 dBi within the operating band.