a bandpass filter can be realiezed by serveral parallel LCs connected by impedance converters.
a bandstop filter can be realised by several serial LCs connected by impedance converters.
two parallel LCs connected by impedance converter can be equalized to two resonators with coupling coefficient?
can two serial LCs connected by impedance converter be equalized to two resonators with coupling coefficient? and then bandstop filter can be realized with several resonators with coupling coefficient between each other?