Design and Simulation of Coaxial-Fed Microstrip Patch Antenna

Project Overview

This project focuses on the design and simulation of a coaxial-fed microstrip patch antenna using CST Studio Suite for operation around 5 GHz. The coaxial probe feeding technique was used to achieve effective impedance matching between the antenna and feed.

Simulation & Results

The antenna performance was evaluated through:

Resonant Frequency: ~4.9 GHz
S11 (Return Loss): ~−28 dB
VSWR: ~1.1 near resonance
Directivity at 5 GHz: 6.84 dBi
Radiation Efficiency: −1.862 dB
Total Efficiency: −2.188 dB

Additional analyses included time-domain signals, field-energy decay, Y-parameters, accepted and radiated power, dielectric/metal losses, and 3D far-field radiation characteristics.

Conclusion

The results demonstrate good impedance matching and directional radiation performance around the designed frequency. This project strengthened my practical understanding of microstrip antenna design, coaxial feeding, S-parameters, VSWR, impedance matching, antenna efficiency, and electromagnetic simulation using CST Studio Suite.

Skills: CST Studio Suite | Antenna Design | RF Engineering | Microwave Engineering | Electromagnetic Simulation