MAGNETIC CIRCUIT FOR A YIG SPHERE RESONATOR OF AN OSCILLATOR

摘要

Magnetic circuit for an yttrium-iron garnet crystal (11) resonator for an oscillator, formed by a first cylindrical pole piece (12) comprising a coil (13) provided around an axial core (14) and a second cylindrical pole piece (15) having a flat bottom (16), the yttrium-iron garnet crystal (11) being placed in a gap (17) defined by an end (18) of the axial core (14) and the part (19) of the flat bottom facing the end (18). According to the invention, a circular groove (20) is arranged in the flat bottom (16) around the part (19) facing the end (18) of the axial core (14).