HIGH ISOLATION DUAL-POLARIZED BROADBAND ANTENNA FOR BASE STATIONS

Ciydem M., Koc S.

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol.57, no.3, pp.603-607, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 3
  • Publication Date: 2015
  • Doi Number: 10.1002/mop.28908
  • Journal Name: MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.603-607
  • Keywords: dual polarization, high isolation, broadband, suspended plate antenna, SUSPENDED PLATE ANTENNAS, PATCH ANTENNA, WIDE-BAND
  • Middle East Technical University Affiliated: Yes

Abstract

A broadband (1.71-2.17 GHz), high isolation, and dual-polarized suspended plate antenna (SPA) is presented. Modified L-probe feed is used for broadband matching and capacitive coupling. Port isolation between two orthogonally polarized channels is improved by making extensions on suspended plates (SPs) and inserting a vertical ungrounded square tube under the first SP (SP1). The prototyped SPA resulted in 8 +/- 0.5 dBi gain and 67 degrees +/- 66 degrees symmetric E-plane and H-plane radiation patterns with low cross-polarization levels. Return losses <=-15 dB and port isolation <=-30 dB are achieved in the entire band. (C) 2015 Wiley Periodicals, Inc.