Design and optimization of a novel miniaturized low-profile circularly polarized wide-slot antenna

ABSTRACT This paper presents a novel structure of a compact circularly polarized (CP) antenna. CP is obtained using a parasitic quasi-rectangular strip placed coplanar to the feedline. A ground plane perturbation combined with the asymmetric geometry of the coplanar waveguide ground planes is utilized to excite additional CP modes. All antenna dimensions are rigorously optimized to achieve the best possible performance in terms of the impedance and axial ratio bandwidth (ARBW). The size of the proposed antenna is only 24.7 × 25 mm2. The antenna performance is validated experimentally. A close agreement between simulation and experimental results is observed. A wide impedance bandwidth of 42.6% (3.93–6.06 GHz) and ARBW of 42% (3.96–6.03 GHz) is with 98.5% bandwidth overlap between |S11| and AR is achieved. The average realized gain of the antenna throughout the operating frequency is 3.4 dBic. Left-hand circular polarization radiation is achieved in the +z-direction. .

[1]  Nasser Ojaroudi,et al.  Circularly polarized microstrip slot antenna with a pair of spur-shaped slits for WLAN applications , 2015 .

[2]  P. Mousavi,et al.  Wideband L-Shaped Circular Polarized Monopole Slot Antenna , 2010, IEEE Antennas and Wireless Propagation Letters.

[3]  S. Sinha,et al.  A Patch-Loaded Ring-Slot Antenna for Wide Band Circular Polarization , 2009 .

[4]  A. Sharaiha,et al.  A Broadband Folded Printed Quadrifilar Helical Antenna Employing a Novel Compact Planar Feeding Circuit , 2010, IEEE Transactions on Antennas and Propagation.

[5]  Negar Tavassolian,et al.  Miniaturized Circularly Polarized Square Slot Antenna With Enhanced Axial-Ratio Bandwidth Using an Antipodal Y-strip , 2017, IEEE Antennas and Wireless Propagation Letters.

[6]  Ubaid Ullah,et al.  Bi-polarized Dual-segment Rectangular Dielectric Resonator Antenna , 2013 .

[7]  S. Koziel,et al.  Enhancement of circular polarization quality of single-patch two-input microstrip antennas , 2016 .

[8]  Zedong Wang,et al.  Broadband Circularly Polarized Antenna With L-shaped Strip Feeding and Shorting-Pin Loading , 2014, IEEE Antennas and Wireless Propagation Letters.

[9]  Javad Nourinia,et al.  Small square slot antenna with circular polarisation characteristics for WLAN/WiMAX applications , 2010 .

[10]  Qing Huo Liu,et al.  Dual-band capacitively loaded annular-ring slot antenna for dual-sense circular polarization , 2017 .

[11]  A. R. Harish,et al.  Broadband Circularly Polarized Printed Slot-Monopole Antenna , 2013, IEEE Antennas and Wireless Propagation Letters.

[12]  Abdolali Abdipour,et al.  A Very Compact Ultrawideband Printed Omnidirectional Monopole Antenna , 2010, IEEE Antennas and Wireless Propagation Letters.

[13]  Kin-Lu Wong,et al.  Coplanar waveguide-fed square slot antenna for broadband circularly polarized radiation , 2003 .

[14]  H. Hassani,et al.  Small UWB Planar Monopole Antenna With Added GPS/GSM/WLAN Bands , 2012, IEEE Transactions on Antennas and Propagation.

[15]  Jia-Yi Sze,et al.  Circularly Polarized Square Slot Antenna With a Pair of Inverted-L Grounded Strips , 2008, IEEE Antennas and Wireless Propagation Letters.

[16]  Kwai-Man Luk,et al.  Design and Study of Wideband Single Feed Circularly Polarized Microstrip Antennas , 2008 .

[17]  Slawomir Koziel,et al.  Structure and Computationally Efficient Simulation-Driven Design of Compact UWB Monopole Antenna , 2015, IEEE Antennas and Wireless Propagation Letters.

[18]  Homayoon Oraizi,et al.  Circularly Polarized Monopole L-Shaped Slot Antenna With Enhanced Axial-Ratio Bandwidth , 2016, IEEE Antennas and Wireless Propagation Letters.

[19]  Rakesh Chowdhury,et al.  A coaxial probe fed wideband circularly polarized antenna using unequal and adjacent-slided rectangular dielectric resonators for WLAN applications , 2018 .

[20]  Homayoon Oraizi,et al.  A New Wideband Circularly Polarized Stair-Shaped Dielectric Resonator Antenna , 2015, IEEE Transactions on Antennas and Propagation.

[21]  S. Ahdi Rezaeieh,et al.  Compact CPW-Fed Planar Monopole Antenna With Wide Circular Polarization Bandwidth , 2013, IEEE Antennas and Wireless Propagation Letters.

[22]  Homayoon Oraizi,et al.  A Novel Low-Cost Circularly Polarized Rotated Stacked Dielectric Resonator Antenna , 2014, IEEE Antennas and Wireless Propagation Letters.

[23]  Zainal Arifin Ahmad,et al.  A review of wideband circularly polarized dielectric resonator antennas , 2017, China Communications.

[24]  C.-C. Chang,et al.  Axial-ratio bandwidth enhancement of asymmetric-CPW-fed circularly-polarised square slot antenna , 2008 .

[25]  C. Pan,et al.  Broadband CPW-Fed Circularly-Polarized Slot Antenna With an Open Slot , 2013 .

[26]  Michel Clenet,et al.  A New Wideband Circularly Polarized Hybrid Dielectric Resonator Antenna , 2010, IEEE Antennas and Wireless Propagation Letters.