J4 ›› 2010, Vol. 37 ›› Issue (5): 966-970.doi: 10.3969/j.issn.1001-2400.2010.05.033

• Original Articles • Previous Articles     Next Articles

Wide-band and low cross-polarization array antenna design  using the umbrellalike printed dipole

CHEN Pan;CAO Xiang-yu;GAO Jun   

  1. (Telecommunication Eng. Inst., AFEU, Xi'an  710077, China)
  • Received:2009-07-07 Online:2010-10-20 Published:2010-10-11
  • Contact: CHEN Pan E-mail:chenpan9917@126.com

Abstract:

In order to increase the bandwidth and decrease the cross-polarization of the antenna, a novel broadband printed dipole antenna is proposed, which employs a double-layered and umbrellalike printed dipole with an integrated balun feed structure. Simulation results indicate that the relative impedance bandwidth of the double-layered dipole antenna is 38.8% (VSWR≤2). The front-to-back ratio is better than 16.4dB and the cross-polarization level is less than -45dB. The bandwidth of the array antenna is 39.4%, while the cross-polarization of the H-plane is less than -48dB, and the gain of the array is 16.2dB.

Key words: printed dipole, broadband, low cross-polarization, array antenna