Bandpass filter having parallel signal paths
View Patent ↗A bandpass filter comprises a number of resonators which are arranged between an input and an output of the filter and which are interconnected to form at least two main signal paths that lead from the input to the output. The at least two main signal paths have overlapping passbands and are connected to the input and/or output via different resonators.
1. A microwave bandpass filter, comprising: a plurality of resonators connected to each other between an input and an output of the filter, the resonators which are connected to the input and the output being directly connected to the input and the output, and at least two main signal paths leading from the input to the output, the at least two main signal paths having overlapping passbands and being connected via different ones of the resonators to the input and the output, the two main signal paths having no common resonators.
2. A microwave bandpass filter, comprising: a plurality of resonators connected to each other between an input and an output of the filter, the resonators which are connected to the input and the output being directly connected to the input and the output, and at least two main signal paths leading from the input to the output, the at least two main signal paths having overlapping passbands and being connected via different ones of the resonators to the input and the output, the at least two main signal paths having overall coupling coefficients with different signs.