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.