A resonation device includes substrate, a resonation element that is attached to first main surface of substrate at first and second attachment portion, and heat-generating unit that is disposed on second main surface which is side opposite to first main surface so as to overlap with resonation element in a planar view. When an angle formed by line which connects center of resonation element and center of first attachment portion and virtual line which connects center of heat-generating unit and center of resonation element in a planar view is θ 1 and an angle formed by a line which connects center of resonation element and center of second attachment portion and virtual line which connects center of heat-generating unit and center of resonation element in a planar view is θ 2 , conditions 0°<θ 1 <90°, 0°<θ 2 <90°, and 0°<|θ 1 −θ 2 |<10° are satisfied.

Resonation device, oscillator, electronic apparatus, and moving object

The invention relates to the technical field of crystal oscillators, especially to a surface mounted crystal and a temperature-consistent crystal oscillator with the surface mounted crystal. The temperature-consistent crystal oscillator comprises a PCB, one side of the PCB is provided with a heating device, and the other side of the PCB is provided with the surface mounted crystal at the position corresponding to the heating device. The surface mounted crystal comprises a ceramic substrate, the four corners of the ceramic substrate are provided with pads respectively, the pads satisfy electrical performance of the crystal, and the middle portion of the ceramic pedestal is provided with a heat-conductive fixed pad. Heat is uniformly transferred to the crystal via the heat-conductive fixed pad in the middle portion of the ceramic pedestal, PCB deformation caused by heat transfer can be alleviated, fracture of welding point between the PCB and the crystal is reduced, and the reliability of the temperature-consistent crystal oscillator is improved.

Surface mounted crystal and temperature-consistent crystal oscillator with surface mounted crystal

A constant temperature control crystal oscillator and a manufacturing method thereof. The constant temperature control crystal oscillator comprises a constant temperature chamber (11), a heating device (13), a printed circuit board (PCB) (14), and a signal generating element (12). The signal generating element (12) is used for generating a frequency signal. The heating device (13), the printed circuit board (14), and the signal generating element (12) are mounted in the constant temperature chamber (11). A groove (143) is formed on one surface of the printed circuit board (14), the signal generating element (12) is mounted in the groove (143), and the heating device (13) is clung to the printed circuit board (14) and is mounted on the other surface opposite to the groove (143). The signal generating element (12) may be a passive crystal resonator or an active crystal oscillator. The constant temperature control crystal oscillator has advantages of small size and high temperature control accuracy.

Constant temperature control crystal oscillator and manufacturing method thereof

The present invention discloses an Oven Controlled Crystal Oscillator and a manufacturing method thereof. The Oven Controlled Crystal Oscillator comprises a thermostatic bath, a heating device, a PCB and a signal generating element, where the signal generating element is used for generating a signal of a certain frequency, the heating device, the PCB and the signal generating element are mounted in the thermostatic bath, the signal generating element is mounted in a groove formed on one side of the PCB, while the heating device is mounted against the other side of the PCB that is opposite to the groove. The signal generating element may be a passive crystal resonator or an active crystal oscillator. The Oven Controlled Crystal Oscillator according to the invention is advantageous for a small volume and a high temperature control precision.

Chaosheng Liu

Papers

Constant temperature control crystal oscillator and manufacturing method thereof

Oven controlled crystal oscillator and manufacturing method thereof