Title :
Fractal boundary circularly polarised single feed microstrip antenna
Author :
Rao, P. Nageswara ; Sarma, N. V S N
Author_Institution :
Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Warangal
Abstract :
A Koch fractal boundary circularly polarised single feed microstrip antenna is presented. The proposed antenna gives very good circular polarisation with axial ratio close to 0 dB at the centre frequency of 2510 MHz, 3 db axial ratio bandwidth of about 1.6% and impedance bandwidth of 6.2%. Tt is established that it is easy to obtain circular polarisation using the fractal curve as the boundary. The antenna provides about 6 dB gain over the frequency band of operation.
Keywords :
antenna feeds; electromagnetic wave polarisation; fractal antennas; microstrip antennas; Koch fractal boundary antenna; axial ratio bandwidth; circularly polarised single feed microstrip antenna; frequency 2510 MHz; impedance bandwidth;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080706
