A circular microstrip‐fed single‐layer single‐slot antenna for multi‐band mobile communications

TLDR: In this paper, a modified circular microstrip feedline leads to good impedance matching in a wide dual-band antenna, and the peak antenna gain is 4.61 dBi and 3.80 dBi for the lower (cellular and GSM) and upper (DCS, PCS, and IMT-2000) bands, respectively.

Abstract: In this paper, we study a circular microstripline-fed single-layer single-slot antenna. In this case, a modified circular microstrip feedline leads to good impedance matching in a wide dual band. The 10-dB return loss impedance bandwidth is 50.8% for cellular (0.824–0.96 GHz) and GSM (0.86–0.88 GHz) operations, and is 37.1% for DCS (1.71–1.88 GHz), PCS (1.85–1.99 GHz), and IMT-2000 (1.90–2.20 GHz) operations. We obtain the result for the return loss of exhibited multi-band characteristics. The peak antenna gain is 4.61 dBi and 3.80 dBi for the lower (cellular and GSM) and upper (DCS, PCS, and IMT-2000) bands, respectively. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 59–62, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10824