DESIGN AND FABRICATION OF A COMPACT MICROSTRIP TRIPLEXER FOR WIMAX AND WIRELESS APPLICATIONS

A novel structure to design a microstrip triplexer for wireless and WiMAX applications is presented. To obtain a compact microstrip layout, step impedance resonators and coupled lines are used. The introduced triplexer has a size of 0.35 lambda(g) x 0.26 lambda(g), where lambda(g) is calculated at 2.3 GHz. Also, the obtained insertion losses are 0.78 dB, 1.1 dB and 0.62 dB at 2.3 GHz, 3.2 GHz and 3.6 GHz, respectively. The LC model of the presented resonator is investigated to tune three resonance frequencies by calculating numerical values of inductors and capacitors. Finally, the designed triplexer is simulated and measured.

Automated summary

A novel microstrip triplexer structure is designed for wireless and WiMAX applications, utilizing step impedance resonators and coupled lines to achieve a compact layout. The triplexer has a small size with low insertion losses at different frequencies, showing good performance in simulation and measurement tests.