Low-Profile Wideband High-Gain Reconfigurable Antenna With Quad-Polarization Diversity

A low-profile, wideband, high-gain reconfigurable antenna, which is capable of switching among four linear polarizations (LPs) at every 45° rotation, namely, 0°, 45°, 90°, and 135° LP, is presented. The proposed structure is based on two half-ellipse-shaped dipoles arranged perpendicularly and is center fed by coaxial cable. The antenna polarization can be switched by selecting the appropriate dipole arms to be excited as well as controlling their phases using p-i-n diodes. To achieve low-profile, high-gain, and unidirectional radiation patterns in a wide range of frequency, a combination of an artificial magnetic conductor and a shallow pyramid-shaped cavity is also utilized in this design. An optimized prototype with low profile of <inline-formula> <tex-math notation="LaTeX">$0.1\lambda $ </tex-math></inline-formula> at the lowest operating frequency yields a measured overlapped impedance bandwidth (BW) of 53.9% for all polarization states. In addition, a radiation efficiency of greater than 78% and measured broadside gain from 6.8 to 10.9 dBi are observed over the entire operation BW.

[1]  Hang Wong,et al.  Multipolarization-Reconfigurable Circular Patch Antenna With L-Shaped Probes , 2017, IEEE Antennas and Wireless Propagation Letters.

[2]  Wei Hong,et al.  Design of a Wideband Quad-Polarization Reconfigurable Patch Antenna Array Using a Stacked Structure , 2017, IEEE Transactions on Antennas and Propagation.

[3]  A. Monorchio,et al.  TE Surface Wave Resonances on High-Impedance Surface Based Antennas: Analysis and Modeling , 2011, IEEE Transactions on Antennas and Propagation.

[4]  Kwai-Man Luk,et al.  A Reconfigurable Magneto-Electric Dipole Antenna Using Bent Cross-Dipole Feed for Polarization Diversity , 2017, IEEE Antennas and Wireless Propagation Letters.

[5]  Huy Hung Tran,et al.  Wideband Circularly Polarized Cavity-Backed Asymmetric Crossed Bowtie Dipole Antenna , 2016, IEEE Antennas and Wireless Propagation Letters.

[6]  B. Turetken,et al.  An Improved Design of Planar Elliptical Dipole Antenna for UWB Applications , 2010, IEEE Antennas and Wireless Propagation Letters.

[7]  Huy Hung Tran,et al.  Wideband and Multipolarization Reconfigurable Crossed Bowtie Dipole Antenna , 2017, IEEE Transactions on Antennas and Propagation.

[8]  Miguel Ferrando-Bataller,et al.  A novel low profile high-gain UHF antenna using High-Impedance Surfaces , 2014, The 8th European Conference on Antennas and Propagation (EuCAP 2014).

[9]  Xi Chen,et al.  A Multi-linear Polarization Reconfigurable Unidirectional Patch Antenna , 2017, IEEE Transactions on Antennas and Propagation.

[10]  Quan Xue,et al.  A Polarization-Reconfigurable Dipole Antenna Using Polarization Rotation AMC Structure , 2015, IEEE Transactions on Antennas and Propagation.

[11]  Christophe Fumeaux,et al.  A Frequency- and Polarization-Reconfigurable Circular Cavity Antenna , 2017, IEEE Antennas and Wireless Propagation Letters.

[12]  纪奕才,et al.  Analysis of GPR UWB Half-Ellipse Antennas with Different Heights of Backed Cavity above Ground , 2010 .

[13]  Zhenghe Feng,et al.  Polarization Reconfigurable Slot Antenna With a Novel Compact CPW-to-Slotline Transition for WLAN Application , 2010, IEEE Antennas and Wireless Propagation Letters.

[14]  Long Zhang,et al.  Wideband Loop Antenna With Electronically Switchable Circular Polarization , 2017, IEEE Antennas and Wireless Propagation Letters.

[15]  D. Sievenpiper,et al.  High-impedance electromagnetic surfaces with a forbidden frequency band , 1999 .

[16]  Chang-Hong Liang,et al.  A Reconfigurable Antenna With Frequency and Polarization Agility , 2011, IEEE Antennas and Wireless Propagation Letters.

[17]  L. Akhoondzadeh-Asl,et al.  Wideband Dipoles on Electromagnetic Bandgap Ground Planes , 2007 .

[18]  Quan Xue,et al.  Ultrawideband Composite Cavity-Backed Folded Sectorial Bowtie Antenna With Stable Pattern and High Gain , 2009, IEEE Transactions on Antennas and Propagation.

[19]  Hang Wong,et al.  A Reconfigurable CP/LP Antenna With Cross-Probe Feed , 2017, IEEE Antennas and Wireless Propagation Letters.

[20]  Hang Wong,et al.  Wideband Circular-Polarization Reconfigurable Antenna With L-Shaped Feeding Probes , 2017, IEEE Antennas and Wireless Propagation Letters.

[21]  Wei Ruan,et al.  Low-Profile Broadband Dual-Polarized Dipole Antenna on AMC Reflector for Base Station , 2017 .

[22]  Hang Wong,et al.  Polarization-Reconfigurable Magnetoelectric Dipole Antenna for 5G Wi-Fi , 2017, IEEE Antennas and Wireless Propagation Letters.

[23]  Son Xuat Ta,et al.  Low-Profile Broadband Circularly Polarized Patch Antenna Using Metasurface , 2015, IEEE Transactions on Antennas and Propagation.

[24]  H. Wong,et al.  Wideband Circular Polarization Reconfigurable Antenna , 2015, IEEE Transactions on Antennas and Propagation.

[25]  Hang Wong,et al.  Polarization Reconfigurable Wheel-Shaped Antenna With Conical-Beam Radiation Pattern , 2015, IEEE Transactions on Antennas and Propagation.

[26]  Ching-Wen Hsue,et al.  A Symmetrical Reconfigurable Multipolarization Circular Patch Antenna , 2014, IEEE Antennas and Wireless Propagation Letters.

[27]  Hang Wong,et al.  Multi-Polarization Reconfigurable Antenna for Wireless Biomedical System , 2017, IEEE Transactions on Biomedical Circuits and Systems.

[28]  Guang Fu,et al.  A Wideband Polarization Reconfigurable Antenna With Partially Reflective Surface , 2016, IEEE Transactions on Antennas and Propagation.