Patent ID: 6559728
Filing Date: 2003-05-06
Classification: H03L,H05K

Abstract:
An ovenized oscillator, comprising:a) a ceramic case having a cavity therein, the case having a bottom and a ledge extending into the cavity, the case having a plurality of first circuit lines therein; b) a substrate located in the cavity and supported by the ledge, the substrate having a first and a second surface and a plurality of second circuit lines therein; c) a conductive epoxy located between the ledge and the second surface of the substrate, the conductive epoxy electrically connecting the first and second circuit lines; d) a crystal mounted to the second surface of the substrate and electrically connected to the second circuit lines; e) a signal conditioning circuit mounted to the first surface of the substrate and electrically connected to the second circuit lines; f) a heater mounted to the bottom of the ceramic case and electrically connected to the first circuit lines; g) a thermal adhesive located between the heater and the crystal, the thermal adhesive thermally linking the crystal and the heater; and h) a cover mounted over the cavity for sealing the ceramic case.