Array Patch Antenna Design

Project Overview: The main objective of this project was to design and analyze a high-gain, highly directive rectangular microstrip patch antenna operating at the millimeter-wave (mmWave) frequency of 28 GHz, specifically targeting future 5G mobile communication applications.Design & Simulation: The antenna was modeled and simulated using CST Microwave Studio on a low-cost FR-4 substrate. To achieve the optimal performance required for 5G networks, the design was developed and evaluated in three progressive stages: * Single-Element Patch Antenna: Serving as the reference design. * 2×1 Linear Array Antenna: Utilizing a 1:2 microstrip power divider. * 4×1 Linear Array Antenna: Using a corporate feed network for even power distribution.Key Results & Achievements: By extending the single element into an array configuration, the antenna's gain and directivity were significantly enhanced. The final 4×1 array configuration demonstrated exceptional performance metrics: * Resonance Frequency: 28 GHz. * Return Loss (S11): Achieved an excellent impedance matching of -63.14 dB. * VSWR: Reached a highly efficient value of 1.024. * Gain: The array achieved a final gain of approximately 11.2 dBi.Conclusion: The simulation results prove that the 4×1 microstrip patch array successfully overcomes the high path loss challenges of mmWave frequencies, making it a strong and reliable candidate for 5G communication systems.