Perturbed hexagonal microstrip antenna for circular polarization

Hexagonal microstrip antenna with perturbed edges and a single coaxial feed has been proposed for circular polarization. The configuration has been realized by inserting perturbations along two opposite sides of the hexagonal microstrip antenna. Both left-hand and right-hand circular polarization is obtained, simply by displacing the feed location by 90 degree. The measured bandwidth corresponding to VSWR ≤ 2 of 26.2 MHz and the 3 dB axial ratio bandwidth of 6.01 MHz has been achieved for the antenna which is designed at 915 MHz. Theoretical results have been validated with experiments.

[1]  Nirod K. Das,et al.  Rectangular microstrip antenna for circular polarization , 1986 .

[2]  P. Hall,et al.  Handbook of microstrip antennas , 1989 .

[3]  Y. Suzuki,et al.  Circularly polarised radiation from singly fed equilateral-triangular microstrip antenna , 1987 .

[4]  Kin-Lu Wong,et al.  Circularly polarised equilateral-triangular microstrip antenna with truncated tip , 1998 .

[5]  Kin-Lu Wong,et al.  Circular polarisation design of a single-feed equilateral-triangular microstrip antenna , 1998 .

[6]  Kin-Lu Wong,et al.  Single-feed small circularly polarised square microstrip antenna , 1997 .

[7]  Jui-Han Lu,et al.  Single-feed slotted equilateral-triangular microstrip antenna for circular polarization , 1999 .

[8]  Misao Haneishi,et al.  A design of back-feed type circularly polarized microstrip disk antennas having symmetrical perturbation element by one-point feed , 1981 .

[9]  R. Garg,et al.  Microstrip Antenna Design Handbook , 2000 .

[10]  Kin‐Lu Wong.  Compact and Broadband Microstrip Antennas , 2002 .

[11]  Henry Jasik,et al.  Antenna engineering handbook , 1961 .

[12]  Kin-Lu Wong,et al.  Single-feed dual-frequency equilateral-triangular microstrip antenna with pair of spur lines , 1998 .

[13]  G. Kumar,et al.  Broadband microstrip antennas , 2002, Microstrip and Printed Antenna Design.

[14]  Kin-Lu Wong,et al.  Compact circular polarisation design for equilateral-triangular microstrip antenna with spur lines , 1998 .

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

[16]  S. Krishnan,et al.  Determination of resonance frequency of hexagonal and half hexagonal microstrip antennas , 2007 .