Conical Beam Array Antenna With Polarization Diversity

This study designed a 2×2 circular disc array antenna with omnidirectional radiation pattern and polarization diversity. Each disc element was located above a circular slot fed by an L-shaped strip, in which the switching between two orthogonal linear polarizations (LP) and circular polarization (CP) were realized by controlling two pin diodes. To allow conical beam for all polarization senses, a meticulously designed cross-shaped feeding network is proposed, and besides showing a suffficient 10 dB return loss bandwidth that covers the 2.4 GHz band of WLAN operation, good cross-polarization level (XPL) were measured when the array operated in all available polarization senses.

[1]  Laurent Dussopt,et al.  Circularly polarised antenna with switchable polarisation sense , 2000 .

[2]  K. Luk,et al.  A wideband circularly polarized conical-beam patch antenna , 2006, IEEE Transactions on Antennas and Propagation.

[3]  Junji Yamauchi,et al.  Singly-fed patch antenna radiating a circularly polarised conical beam , 1990 .

[4]  Peter S. Excell,et al.  New circularly-polarised conical-beam microstrip patch antenna array for short-range communication systems , 2009 .

[5]  Y. Kim,et al.  A reconfigurable microstrip antenna for switchable polarization , 2004, IEEE Microwave and Wireless Components Letters.

[6]  Jeen-Sheen Row,et al.  Reconfigurable Circularly-Polarized Patch Antenna With Conical Beam , 2010, IEEE Transactions on Antennas and Propagation.

[7]  Frederick G. Farrar,et al.  Microstrip antennas with frequency agility and polarization diversity , 1981 .

[8]  Aleksandar Nesic,et al.  Circularly polarised printed antenna with conical beam , 1998 .

[9]  J. Row,et al.  Single-Fed Microstrip Patch Antenna With Switchable Polarization , 2008, IEEE Transactions on Antennas and Propagation.

[10]  Jeen-Sheen Row,et al.  Design of frequency‐agile microstrip antennas with conical‐beam radiation , 2011 .

[11]  Jeen-Sheen Row,et al.  Aperture-Coupled Microstrip Antennas With Switchable Polarization , 2006, IEEE Transactions on Antennas and Propagation.

[12]  Peter S. Excell,et al.  A new design of horizontally polarizedand dual-polarized uniplanar conical beam antennas for HIPERLAN , 2003 .

[13]  J. Takada,et al.  Circularly polarised conical beam radial line slot antenna , 1994 .

[14]  H. Kawakami,et al.  Research on circularly polarized conical-beam antennas , 1997 .