Voltage controlled oscillator having a resonator

A voltage controlled oscillator having a resonator, comprising:

• a substrate made up of a plurality of dielectric layers, said substrate being made from one of the dielectric materials BaO-SiO.sub.2 -Al.sub.2 O.sub.3 and BaO-SrO-SiO.sub.2 -ZrO.sub.2 ;
• an inductor functioning conductive film, grounding electrode films, and a capacitor electrode film each formed at a boundary surface of one of the dielectric layers, said grounding electrode films being arranged, in the direction in which the dielectric layers are laminated, at both sides of said inductor functioning conductive film;
• said inductor functioning conductive film and a pair of said grounding electrode films constituting the resonator;
• all of said films being made from one of Ag and Cu;
• and
• electric lands formed on the surface of said substrate so that other components of the oscillator are mounted thereon.