Yagi-Based Patch Antenna Design for 2.45 GHz Applications

A microstrip patch antenna incorporating Yagiinspired elements, such as a reflector and director is introduced in this work. It is also incorporated with a Complementary Split Ring Resonator (CSRR) to enhance performance at <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{2. 4 5} \mathbf{~ G H z}$</tex>. The proposed antenna design achieves a compact profile while demonstrating improved gain and directivity. The simulated results indicate a gain of 5.151 dBi, an <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$S_{11}$</tex> parameter of −23.8633 dB, and a directivity of 6.871 dBi. The design also supports a bandwidth of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{1 1 6. 3 ~ M H z}$</tex> with dimensions of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{6 3. 2 6 ~ m m} \boldsymbol{\times} \mathbf{5 6. 1 6} \text{mm} \times 3.2 \text{mm}$</tex>. The integration of the CSRR structure significantly enhances the antenna's electromagnetic performance, particularly in improving gain and directivity.