Among the solutions allowing to design frequency agile microwave devices, t
he Y-Ba-Cu-O/Sr-Ti-O//La-Al-O multi-layers was used to obtain frequency shi
ft of 10% and individual resonator Qo higher than 1000. A resonator used fo
r the extraction of the material characteristics and as single element filt
er was optimized. The filter design allows the control of the response over
the frequency range. Stop-band filters were tested with a good agreement b
etween the materials properties and the modeling.