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High performance narrowband bandpass filters are required in satellite communication systems. Especially HTS filter banks are particularly attractive because of their low insertion loss and sharp filter skirts needed in input multiplexers. T1,Ba,CaCuZO, thin f i l m s on 2"-LaAlO,-substrates and 10xlOmmz-sapphire substrateswere prepared using a two s t e p technology. A TI-free precursor film is prepared by sputtering. The TI-incorporation is performed by annealing in a T1,O loaded atmosphere. The best films show surface resistances below 1OOp C2 at 77K and 4GHz. Two-pole bandpass-filters with a center frequency of 4GHz and a bandwidth o f 17.5MHz using dual-mode ring resonators have been fabricated from the films on LaA10,. The measured passband shape achieved with tuning elements is in good agreement with t h e specifications of the design.