TEMPERATURE-CONTROLLED CRYSTAL OSCILLATOR Russian patent published in 2003 - IPC

FIELD: radio electronics; high-stability crystal oscillators. SUBSTANCE: temperature-controlled crystal oscillator where temperature stability of frequency is about ±1•10^-9 and higher has external case, printed-circuit board that mounts oscillator circuit components whose temperature is not controlled, board-mounted heat-distribution chamber accommodating resonator and heating elements mounted on side walls of this chamber; heat-distribution chamber is made in the form of thin-walled rectangular parallelepiped whose bottom face functions as chamber base with holder mounted in its central part; this holder carries rectangular crystal resonator and temperature sensor; heating elements are installed on side walls of heat-distribution chamber symmetrically relative to its symmetry plane. EFFECT: reduced mass and size of crystal oscillator; reduced power requirement. 2 cl, 3 dwg