公开(公告)号：US20150214957A1

公开(公告)日：2015-07-30

申请号：US14219009

申请日：2014-03-19

Applicant: HARMONY ELECTRONICS CORP.

Inventor： Hsin-Hung LI ,  Shui-Yuan HSIEH

IPC: H03L1/02 ,  B81B7/00 ,  H03B5/30

CPC classification number: H03L1/022 ,  B81B7/0087 ,  B81B2201/0271 ,  H03H9/02448 ,  H03H9/08 ,  H03H9/2452

Abstract: A temperature compensated oscillator and a control method are provided. The oscillator includes a Micro Electro Mechanical Systems (MEMS) resonator group, a heating device, and a controller. The MEMS resonator group includes a first MEMS resonator and a second MEMS resonator. The first MEMS resonator outputs a main oscillation frequency according to a control signal. The second MEMS resonator outputs an auxiliary oscillation frequency according to a temperature of the second MEMS resonator. The heating device increases a temperature of the MEMS resonator group. The controller controls the heating device according to a difference between the main oscillation frequency and the auxiliary oscillation frequency. In the control method, at first, the MEMS resonator group is provided. Thereafter, a frequency difference between the main oscillation frequency and the auxiliary oscillation frequency is calculated. Then, the temperature of the MEMS resonator group is controlled according to the frequency difference.

Abstract translation: 提供温度补偿振荡器和控制方法。 振荡器包括微机电系统（MEMS）谐振器组，加热装置和控制器。 MEMS谐振器组包括第一MEMS谐振器和第二MEMS谐振器。 第一MEMS谐振器根据控制信号输出主振荡频率。 第二MEMS谐振器根据第二MEMS谐振器的温度输出辅助振荡频率。 加热装置增加了MEMS谐振器组的温度。 控制器根据主振荡频率和辅助振荡频率之间的差异来控制加热装置。 在控制方法中，首先提供MEMS谐振器组。 此后，计算主振荡频率和辅助振荡频率之间的频率差。 然后，根据频率差来控制MEMS谐振器组的温度。

公开(公告)号：US20150214956A1

公开(公告)日：2015-07-30

申请号：US14207671

申请日：2014-03-13

Applicant: HARMONY ELECTRONICS CORP.

Inventor： Shui-Yuan HSIEH ,  Hsin-Hung LI

IPC: H03L1/02 ,  B81B7/00 ,  H03B5/30

CPC classification number: H03L1/022 ,  B81B7/008 ,  H03B5/30 ,  H03H9/02448 ,  H03H9/08 ,  H03H9/2452

Abstract: A temperature compensated Micro Electro Mechanical (MEMS) oscillator is provided. The oscillator includes a MEMS resonator group, a heating device, a connection body, and a controller. The MEMS resonator group includes a first MEMS resonator and a second MEMS resonator. The first MEMS resonator is configured to output a main oscillation frequency. The second MEMS resonator is configured to output an auxiliary oscillation frequency according to a temperature of the second MEMS resonator. The heating device is configured to increase a temperature of the MEMS resonator group. The connection body is connected between the MEMS resonator group and the heating device to transmit heat from the heating device to the MEMS resonator group, and configured to electrically isolate the MEMS resonator group from the heating device. The controller is configured to control the heating device according to a difference between the main oscillation frequency and the auxiliary oscillation frequency.

Abstract translation: 提供温度补偿微机电（MEMS）振荡器。 振荡器包括MEMS谐振器组，加热装置，连接体和控制器。 MEMS谐振器组包括第一MEMS谐振器和第二MEMS谐振器。 第一MEMS谐振器被配置为输出主振荡频率。 第二MEMS谐振器被配置为根据第二MEMS谐振器的温度输出辅助振荡频率。 加热装置被配置为增加MEMS谐振器组的温度。 连接体连接在MEMS谐振器组和加热装置之间，以将热量从加热装置传递到MEMS谐振器组，并被配置为将MEMS谐振器组与加热装置电隔离。 控制器被配置为根据主振荡频率和辅助振荡频率之间的差异来控制加热装置。