公开(公告)号：US5594354A

公开(公告)日：1997-01-14

申请号：US370495

申请日：1995-01-09

申请人： Gerald E. Roberts ,  Michael E. Roberts

发明人： Gerald E. Roberts ,  Michael E. Roberts

IPC分类号： G01R31/28 ,  G01R29/22

CPC分类号： G01R31/2824

摘要： The present invention discloses a method for obtaining frequency parameters to determine the resonator frequencies, the synchronous peak separation frequency, and the normal center frequency of a coupled-dual resonator crystal. Under this method, a plurality of frequencies are applied to a first electrode. This application is performed once while the second electrode and the common electrode are connected by a short circuit, and then again when the second electrode and the common electrode are capacitively connected or open circuited. During each application of the plurality of frequencies to the crystal, the phase response for the output of the resonator circuit is monitored. Then the time response of the crystal is determined. Next, the time delay relative maxima for the time response is determined. Finally, the frequencies at which the time delay relative maxima occur are determined. These frequencies correspond to the inflection points where the change in phase goes from monotonically increasing to monotonically decreasing. These frequencies are used to calculate the resonator frequencies, the synchronous peak separation frequency, and the normal center frequency of the crystal. Alternatively, all of the critical frequencies can be determined with the second electrode and the common electrode connected by a short circuit. In this case, however, the critical frequencies correspond to the time delay maxima and minima for the time response. This method is applicable regardless of the frequencies of the resonators or the amount of frequency separation between the resonators.

摘要翻译： 本发明公开了一种用于获得频率参数以确定耦合双谐振器晶体的谐振器频率，同步峰值分离频率和正常中心频率的方法。 在该方法下，向第一电极施加多个频率。 在通过短路连接第二电极和公共电极的同时执行该应用一次，然后当第二电极和公共电极电容连接或断开时再次进行。 在向晶体施加多个频率期间，监视谐振器电路的输出的相位响应。 然后确定晶体的时间响应。 接下来，确定时间响应的时间延迟相对最大值。 最后，确定发生时间延迟相对最大值的频率。 这些频率对应于相位变化从单调递增到单调递减的拐点。 这些频率用于计算谐振器频率，同步峰值分离频率和晶体的正常中心频率。 或者，所有临界频率可以通过第二电极和通过短路连接的公共电极来确定。 然而，在这种情况下，临界频率对应于时间响应的时间延迟最大值和最小值。 无论谐振器的频率或谐振器之间的频率分离量如何，均可使用该方法。

公开(公告)号：USD351257S

公开(公告)日：1994-10-04

申请号：US2238

申请日：1992-12-04

申请人： Michael E. Roberts ,  David I. Muller ,  Edward Colozzi, Jr.

设计人： Michael E. Roberts ,  David I. Muller ,  Edward Colozzi, Jr.

公开(公告)号：US5587663A

公开(公告)日：1996-12-24

申请号：US407078

申请日：1995-03-20

申请人： Gerald E. Roberts ,  Michael E. Roberts

发明人： Gerald E. Roberts ,  Michael E. Roberts

IPC分类号： G01R31/28 ,  G01R29/22

CPC分类号： G01R31/2824

摘要： The present invention discloses a method for obtaining frequency parameters to determine the resonator inductances of a crystal. Under this method, a plurality of frequencies are applied to a first electrode. This application is performed once while the second electrode and the common electrode are connected by a short circuit, and then again when the second electrode and the common electrode are capactively connected or open circuited. During each application of the plurality of frequencies to the crystal, the phase response for the output of the resonator circuit is monitored. Then the time response of the crystal is determined. Next, the time delay relative maxima for the time response is determined. Finally, the frequencies at which the time delay relative maxima occur are determined. These frequencies correspond to the inflection points where the change in phase goes from monotonically increasing to monotonically decreasing. This process is repeated with the crystal turned around in the test fixture to obtain a second set of frequencies. These frequencies are then used to calculate the resonator inductances of the crystal. Alternatively, all of the critical frequencies can be determined with the second electrode and the common electrode connected by a short circuit. In this case, however, the critical frequencies correspond to the time delay maxima and minima for the time response. This method is applicable regardless of the frequencies of the resonators or the amount of frequency separation between the resonators.

摘要翻译： 本发明公开了一种获得频率参数以确定晶体谐振器电感的方法。 在该方法下，向第一电极施加多个频率。 在第二电极和公共电极通过短路连接的同时执行该应用一次，然后当第二电极和公共电极被capactally连接或断开时再次执行。 在向晶体施加多个频率期间，监视谐振器电路的输出的相位响应。 然后确定晶体的时间响应。 接下来，确定时间响应的时间延迟相对最大值。 最后，确定发生时间延迟相对最大值的频率。 这些频率对应于相位变化从单调递增到单调递减的拐点。 在测试夹具中转动的晶体重复该过程以获得第二组频率。 然后使用这些频率来计算晶体的谐振电感。 或者，所有临界频率可以通过第二电极和通过短路连接的公共电极来确定。 然而，在这种情况下，临界频率对应于时间响应的时间延迟最大值和最小值。 无论谐振器的频率或谐振器之间的频率分离量如何，均可使用该方法。