Design of ultra wide band transition connector for GTEM cell

The transition connector plays a vital role in the study of Gigahertz Transverse Electro Magnetic cell (GTEM Cell). An ultra wide band transition connector is proposed based on the principle of impedance matching between the transition connector and the GTEM Cell. The dual energy methods and 3D quasi-static are respectively employed to calculate the characteristic impedance of the transition connector and the main section of the GTEM Cell. The transition connector has the advantages of simple structure and low insertion loss. A GTEM Cell is presented with the transition in this paper. The simulated results of the CST software show that its upper limiting frequency is 25GHz, and indicate that the VSWR of the GTEM Cell is less than 1.62 and S₁₁ is less than -12dB during the frequency band 0.5~25GHz.