A wideband dual-polarized antenna with very low back radiation

Author

Mingjian Li ; Kwai-Man Luk

Author_Institution

Electron. Eng., City Univ. of Hong Kong, Hong Kong, China

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

61

Lastpage

63

Abstract

A wideband ±45° dual-polarized antenna based on the magneto-electric dipole is excited by a new feeding technique. The common impedance bandwidth is from 1.69GHz to 2.76GHz (48.1%) with SWR≤1.5. The isolation between the two ports is larger than 30dB. The gains of the proposed antenna vary in the range of 7.6-9.3dBi and 7.6-9.4dBi for port 1 and port 2 respectively in the operating frequency range. Due to its complementary nature (or Huygens´ source), the proposed antenna has a stable radiation pattern with a low cross-polarization level of less than -21dB and a low back radiation level of less than -29dB.

Keywords

antenna radiation patterns; broadband antennas; dipole antennas; Huygens source; bandwidth 1.69 GHz to 2.76 GHz; cross-polarization level; impedance bandwidth; magneto-electric dipole; radiation pattern; wideband dual-polarized antenna; Antenna measurements; Antenna radiation patterns; Broadband antennas; Dipole antennas; Ports (Computers); Probes; Γ-shaped probes; Dual-polarized antennas; magneto-electric dipoles; wideband antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2012 Asia-Pacific

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1330-9

Electronic_ISBN

978-1-4577-1331-6

Type

conf

DOI

10.1109/APMC.2012.6421498

Filename

6421498