Isolation enhancement in wideband dual-polarised suspended plate antenna with modified T-type probes

Ciydem M.

ELECTRONICS LETTERS, cilt.50, sa.5, ss.338-339, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 50 Sayı: 5
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1049/el.2013.3548
  • Dergi Adı: ELECTRONICS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.338-339
  • Gazi Üniversitesi Adresli: Hayır

Özet

An isolation enhancement technique for a wideband (1.71-2.17 GHz) and +/- 45 degrees linear dual-polarised suspended plate antenna is proposed. Isolation (S-12, S-21) between channels is improved by making extensions on suspended plates (SPs) 1-2 and inserting a vertical ungrounded vertical wall under SP-1. The modified T-type probes in this design provide better coupling and return losses (S-11, S-22) for wideband operation. Based on the numerical simulations and measurements, it is observed that 8.2 +/- 0.5 dBi gain and 66 degrees +/- 6 degrees symmetric azimuth and elevation radiation patterns are obtained. Return losses <= - 15 dB and isolation <= - 30 dB are achieved in the entire band. This antenna is suitable for base stations of mobile wireless communication systems (PCS, DCS and IMTS).