VARIABLE CAPACITANCE ELEMENT AND TUNABLE FILTER

• Main Authors: KIMURA, TETSUYA, TOCHISHITA, HIKARI, KADOTA, MICHIO, KOUTSAROFF, IVOYL P
• Format: Patent
• Language: English; French; Japanese
• Published: 30.08.2012
• Subjects: BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

Provided is a variable capacitance element that uses a dielectric layer the dielectric constant of which changes with the application of voltage, and that enables a piezoelectric substrate such as a piezoelectric resonator or a tunable filter to be miniaturized. A variable capacitance element (1) co...