Broadband Long Rectangular Patch Antenna With High Gain and Vertical Polarization

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

31 Scopus Citations
View graph of relations


  • Juhua Liu
  • Quan Xue


Original languageEnglish
Article number6330995
Pages (from-to)539-546
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number2
Online published15 Oct 2012
Publication statusPublished - Feb 2013


A new microstrip rectangular patch antenna with high gain and vertically polarized radiation at endfires is proposed. The antenna has a wide bandwidth with a very low profile. Such antenna is based on a long microstrip line with periodic shorting-vias along the longitudinal direction. When both ends of the line are also shorted by vias, a resonant type of antenna is constructed. Two resonant modes with similar radiation patterns are generated. By optimizing the separation of the resonate frequencies of the two modes, a wide bandwidth is achieved. Measured results show that the antenna with a profile of 0.03 wavelengths in free space and a length of about 1.25 wavelengths can produce a bandwidth of 12.48% and a maximum gain of about 9 dBi.

Research Area(s)

  • Gain, low profile, microstrip antenna, rectangular patch antenna, vertical polarization, wide bandwidth