RESONANT CAVITY DEVICE WITH TRANSVERSE DIMENSIONAL VARIATION CONVERSION, INDUCED BY A TEMPERATURE VARIATION, IN LONGITUDINAL DIMENSIONAL VARIATION

摘要

P A resonant cavity device (D) comprises a waveguide body comprising a side wall (1), extending in a longitudinal direction, having a first coefficient of thermal expansion and delimiting a resonant cavity (CR) with first (2) and second (3) opposite end walls. The first end wall (2) has a second coefficient of thermal expansion strictly lower than the first coefficient and comprises an internal face secured to a first assembly (E1) comprising a main plate (6), having a third coefficient of expansion thermal, strictly less than the first, and of dimensions in a transverse plane substantially equal, by values less, than those of the cavity (CR), and an intermediate element (7) having a fourth coefficient of thermal expansion, strictly greater than the third , comprising an end portion (8) fixedly secured to the main plate (6) and arranged, when a temperature variation occurs, to transform a dimensional variation in a transverse direction into a dimensional variation in the longitudinal direction, which induces a longitudinal translation of the main plate (6) inside the cavity (CR). / P