Micro Strip Multiplexor using Four Ultra-Wide Band BPF

One quad band filter is proposed in this paper with a stub loaded open loop resonator.A design procedure to produce four BPFs is presented step by step.Lastly, a high-performance microstrip multiplexer is developed using the BPFs that were developed.When compared to earlier multiplexers, the developed multiplexer has the best insertion and return losses and the shortest dimensions.The frequencies at which it operates 2.2 GHz, 2.8 GHz, 3.5 GHz, and 4 GHz are suitable for multi-band Ultra-Wide Band (UWB) communications systems.The suggested quad-channel microstrip multiplexer is constructed and measured where a good agreement is obtained in order to validate the simulation and measurement results.