Wideband Circularly Polarized Spidron Fractal Slot Antenna with an Embedded Patch

الملخص EN

In this communication, a wideband circularly polarized (CP) Spidron fractal microstrip antenna is proposed based on the concept of embedded structures.

The proposed antenna is excited by a tapered microstrip feedline.

A wide 3 dB axial ratio (AR) bandwidth of 28.81% (3.09–4.13 GHz) is obtained by merging the CP bands of the Spidron fractal slot and patch antennas.

In addition, a measured −10 dB reflection bandwidth of 47.25% (2.57–4.16 GHz) is reported.

The measured results are in reasonable concurrence with the simulated results.

The measured gain varies between 2.12 dBic and 3.56 dBic within the AR bandwidth.