IEEE Microwave and Wireless Components Letters · 2013 · 50 citations · 12 references
EngineeringElectrical EngineeringAntennasEvolutionary DesignMicrowave EngineeringMicrostrip CircuitsMicrowave FiltersMicrowave Integrated CircuitsMicrowave ResonatorsResonant CircuitsUltra-wideband CommunicationBandpass FiltersCircuit TopologyGenetic Algorithm Based DesignGenetic Algorithm OptimizationMicrostrip Bandpass FiltersMicrostrip FiltersMicrostrip ResonatorsResonance
A new microstrip ultra-wideband (UWB) bandpass filter (BPF) with two sharp notches using E-shaped resonator is proposed in this letter. The circuit topology and its corresponding electrical parameters of the initial microstrip UWB BPF are achieved by a variation of genetic algorithm (GA). Then, the resonance properties of the E-shaped resonator are studied. Results reveal that the multiple-mode property of the E-shaped resonator can be utilized in the UWB BPF design to achieve dual band-notched performance. To validate the design concept, a microstrip UWB BPF with two notched bands respectively centered at frequencies of 5.9 GHz and 8.0 GHz is designed and fabricated. Both simulation and experimental results are provided with good agreement.
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