Electrical resonator with a ribbon loop and variable capacitors formed at the parallel ends

An elementary electrical resonator comprising:

• a ribbon conductor forming a flat loop with at least one turn, in which the ends of said ribbon conductor form two parallel segments;
• a first conducting bridge forming an arch straddling said parallel segments of said ribbon conductor in which opposing surfaces of the arch and of said parallel segments forms a capacitor, and in which a part of the first conducting bridge is capable of being displaced with respect to said parallel segments under the action of a control signal so as to cause the capacitance of said capacitor, and therefore the tuning frequency of said resonator to vary;
• a track parallel to the two parallel segments forming the ends of the flat loop;
• and
• a second conducting bridge also forming a variable capacitor, said second bridge straddling said track and one of said two parallel segments forming the ends of the flat loop.