Novel Aperture-Coupled Microstrip-Line Feed for Circularly Polarized Patch Antenna

Abstract—A wideband circularly polarized patch antenna is proposed. The wide impedance and axial ratio bandwidths are achieved by the proposed feeding mechanism, which entails the use of a circular microstrip line coupling through four Γ-shaped slots to generate four sequentially phased sources to excite the single layer patch antenna. The proposed antenna can provide an SWR bandwidth of over 16.5% (for SWR < 1.5) and an axial-ratio bandwidth of 13.3% (for AR < 3 dB). The performance of the antenna has been confirmed by both measurement and simulation. The antenna gain is enhanced and backlobe radiation is reduced by placing a reflector at an optimized location.

[1]  Huda A. Majid,et al.  Frequency reconfigurable microstrip patch-slot antenna with directional radiation pattern , 2014 .

[2]  In-Sik Choi,et al.  Performance enhancement of target recognition using feature vector fusion of monostatic and bistatic radar , 2014 .

[3]  Hang Wong,et al.  Broadband circularly-polarised patch antenna with 3D meandering strip feed , 2011 .

[4]  Nasimuddin,et al.  Compact Asymmetric-Slit Microstrip Antennas for Circular Polarization , 2011, IEEE Transactions on Antennas and Propagation.

[5]  Quan Xue,et al.  Virtually Shorted Patch Antenna for Circular Polarization , 2010, IEEE Antennas and Wireless Propagation Letters.

[6]  Yong-Xin Guo,et al.  Broadband Circularly Polarized Annular-Ring Microstrip Antenna , 2009, IEEE Transactions on Antennas and Propagation.

[7]  Kin-Fai Tong,et al.  New Proximity Coupled Feeding Method for Reconfigurable Circularly Polarized Microstrip Ring Antennas , 2008, IEEE Transactions on Antennas and Propagation.

[8]  Yong-xin Guo,et al.  Wideband Circularly Polarized Patch Antenna Using Broadband Baluns , 2008, IEEE Transactions on Antennas and Propagation.

[9]  Luigi Boccia,et al.  Performance evaluation of shorted annular patch antennas for high-precision GPS systems , 2007 .

[10]  Yong-Xin Guo,et al.  Wideband circularly-polarized patch antenna , 2005, 2005 Asia-Pacific Microwave Conference Proceedings.

[11]  Zvonimir Sipus,et al.  Circularly polarized single-fed wide-band microstrip patch , 2003 .

[12]  Young Joong Yoon,et al.  A single-feeding circularly polarized microstrip antenna with the effect of hybrid feeding , 2003 .

[13]  Horng-Dean Chen,et al.  Compact circularly polarized pentagon-shaped microstrip antenna with bent slots , 2001, IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229).

[14]  Kin‐Lu Wong,et al.  Dual-band circularly-polarized square microstrip antenna , 2001 .

[15]  R. Sciamanda.  On Maxwell’s displacement current-I , 2000 .

[16]  Kin‐Lu Wong,et al.  Cross-slot-coupled microstrip antenna and dielectric resonator antenna for circular polarization , 1999 .

[17]  Alistair Sambell,et al.  Performance of a cross-aperture coupled single feed circularly polarised patch antenna , 1996 .

[18]  D. Pozar,et al.  Design of wideband circularly polarized aperture-coupled microstrip antennas , 1993 .

[19]  M. I. Aksun,et al.  Theory and experiment of electromagnetically excited microstrip antennas for circular polarization operation , 1989, Digest on Antennas and Propagation Society International Symposium.

[20]  D. H. Schaubert,et al.  Dual aperture-coupled microstrip antenna for dual or circular polarisation , 1987 .

[21]  K. Gupta,et al.  Analysis and optimized design of single feed circularly polarized microstrip antennas , 1983 .