Planar Dual-Band Circular Polarization Monopole Antenna for Wireless Local Area Networks

A novel planar dual-band circular polarization (CP) monopole antenna is proposed. By introducing an inverted L-shaped strip-sleeve shorted to the ground plane, the proposed dual-band CP antenna design easily achieves impedance bandwidths (RL ≥10 dB) approximating 1932/339 MHz and 3-dB axial-ratio bandwidths approximating 250/360 MHz in 2.4/5.2-GHz wireless local area networks (WLANs), respectively. Across all bandwidths, the measured peak gain and radiation efficiency approximate 2.4/2.8 dBic and 97%/65% in 2.4/5.2-GHz WLANs, respectively, with highly bidirectional patterns in the xz- and yz-planes.

[1]  Yoshitaka Toyota,et al.  A simple method for measuring the relative permittivity of printed circuit board materials , 2001 .

[2]  Yi Huang,et al.  Antennas: From Theory to Practice , 2008 .

[3]  Huiqing Zhai,et al.  A Compact Antenna With Broad Bandwidth and Quad-Sense Circular Polarization , 2012, IEEE Antennas and Wireless Propagation Letters.

[4]  Chien-Jen Wang,et al.  Dual-band circularly polarized monopole antenna , 2009, 2009 IEEE International Workshop on Antenna Technology.

[5]  Jyun-Ming Lin,et al.  Dual-band circularly polarized monopole antenna , 2015 .

[6]  Christina F. Jou,et al.  Microstrip-fed broadband circularly polarised monopole antenna , 2010 .

[7]  Clemens Icheln,et al.  METHODS FOR MEASURING RF RADIATION PROPERTIES OF SMALL ANTENNAS , 2001 .

[8]  Yang Wang,et al.  A CPW-Fed Broadband Circularly Polarized Regular-Hexagonal Slot Antenna With L-Shape Monopole , 2011, IEEE Antennas and Wireless Propagation Letters.

[9]  S. A. Rezaeieh.  Dual band dual sense circularly polarised monopole antenna for GPS and WLAN applications , 2011 .

[10]  Jyun-Ming Lin,et al.  Circularly Polarized Antenna Having Two Linked Slot-Rings , 2011, IEEE Transactions on Antennas and Propagation.

[11]  Chien-Jen Wang,et al.  Novel Broadband Monopole Antennas With Dual-Band Circular Polarization , 2009, IEEE Transactions on Antennas and Propagation.

[12]  J. DeMarinis,et al.  The antenna cable as a source of error in EMI measurements , 1988, IEEE 1988 International Symposium on Electromagnetic Compatibility.

[13]  T. Sarkar,et al.  Wideband frequency-domain characterization of FR-4 and time-domain causality , 2001, IEEE Transactions on Electromagnetic Compatibility.