This project involved the design and electromagnetic analysis of a quarter-wave monopole antenna operating at 1.75 GHz using CST Microwave Studio. A two-element monopole array with λ/2 spacing was subsequently implemented to investigate mutual coupling, S-parameters, and changes in radiation characteristics. 

Objectives

• Design a quarter-wave monopole antenna for 1.75 GHz operation.

• Optimize impedance matching and evaluate antenna efficiency.

• Investigate mutual coupling effects by implementing a two-element monopole array.

• Compare single-element and array performance using S-parameters and far-field analysis.

Outcomes & Contributions

• Achieved good impedance matching and nearly 100% radiation efficiency.

• Designed a two-element array with λ/2 spacing and evaluated coupling through S21.

• Demonstrated increased directivity and directional radiation behavior in the array configuration.

Technical Details & Skills

• Technique: Quarter-wave monopole and two-element array design 

• Tools: CST Studio Suite

• Skills: Antenna design, S-parameter analysis, array theory, mutual coupling analysis, radiation pattern characterization 

• Field: Electromagnetics, RF Systems, Wireless Communications, Antenna Arrays