A compact dual-band microstrip-fed monopole antenna

The rapid developments in the wireless communications industry demand novel antenna designs that can be used in more than one frequency band. Applications include: dual-band cellular phones; laptop computers for wireless printer and modem connections; laptops in wireless local area network (LAN) applications; Bluetooth devices. Ali, M. et al., (see 1998 IEEE Antennas Propagat. Soc. Int. Symp. Dig., p.794-7, 1998) describe a dual-band strip-sleeve monopole antenna for use on a laptop computer. We extend the antenna design to be used for dual-band ISM applications. In this application there is a particular interest in obtaining an increased operational bandwidth for the antenna. The effects of design parameters of the microstrip-fed uniplanar monopole antenna on its operational frequency and impedance bandwidth are presented and discussed. The antenna resonates at 1800 MHz and 2450 MHz.

[1]  I. Egorov,et al.  A non-uniform helical antenna for dual-band cellular phones , 2000, IEEE Antennas and Propagation Society International Symposium. Transmitting Waves of Progress to the Next Millennium. 2000 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (C.

[2]  M.A. Stuchly,et al.  A dual-frequency strip-sleeve monopole antenna for a laptop computer , 1998, IEEE Antennas and Propagation Society International Symposium. 1998 Digest. Antennas: Gateways to the Global Network. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.98CH36.

[3]  S. Tarvas,et al.  An internal dual-band mobile phone antenna , 2000, IEEE Antennas and Propagation Society International Symposium. Transmitting Waves of Progress to the Next Millennium. 2000 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (C.