In this letter, the numerical and experimental investigation of triangular-shaped microstrip power divider is designed for C-band applications using defected ground structure (DGS). Numerical simulations are carried out using different computer-aided design tools based on different numerical techniques, i.e., Ansoft HFSSand CST Microwave Studio. Good agreement is found between the calculated results using both HFSS and CST. A parametric study is carried out to address the effect of DGS parameters on the performance of the proposed triangular-shaped microstrip power divider. A power divider prototype is fabricated and tested experimentally. Measured results agree well with numerically calculated results.