Design and Performance Analysis of a CSRR Based Snowflake Fractal Antenna for Multiband Applications

In this communication, a linearly polarized Snowflake shaped fractal antenna is proposed for pentaband operation for both S-band (2-4 GHz) & C-band (4-8 GHz) applications. The antenna with the dimension of 40 mm × 40 mm × 1.6 mm, where FR-4 is used as a substrate and copper is used for the patch as well as the ground plane. The antenna is a combination of a Defected Ground Structure (DGS) with a 90° displacement of Complementary Split Ring Resonator (CSRR). Furthermore, a CSRR slot has been designed in the center of the patch with pin-type slots. The antenna has a total of five bands of frequency resonating at 2.55 GHz, 3.15 GHz, 3.41 GHz, 3.65 GHz, and 5.01 GHz. Therefore, it can operate in 2.3-2.7 GHz, 2.8-3.3 GHz, 3.3-3.5 GHz, 3.5-3.7 GHz, and 4.7-5.01 GHz frequency range with a maximum gain of 2.75 dBi at 5.01 GHz. Thus, considering all the parameters this CSRR loaded Snowflake fractal antenna with a defected ground can satisfy the needs of the desired applications.