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11.发明授权公开(公告)号：US09395392B2
公开(公告)日：2016-07-19
申请号：US13588606
申请日：2012-08-17
摘要： A method of interrogating a surface acoustic wave differential sensor formed by two resonators is provided, wherein the method allows the measurement of a physical parameter by determination of the difference between the natural resonant frequencies of the two resonators, which difference is determined on the basis of the analysis of a signal representative of the level of a signal received as echo of an interrogation signal, for a plurality of values of a frequency of the interrogation signal in a domain of predetermined values; the analysis can be based on the cross-correlation of the said signal representative of the level according to a splitting into two distinct frequency sub-bands. An advantage is that it may be implemented in a radio-modem.
摘要翻译： 提供了一种询问由两个谐振器形成的表面声波差分传感器的方法，其中该方法允许通过确定两个谐振器的固有谐振频率之间的差异来测量物理参数，该差是基于 对于在预定值的域中的询问信号的频率的多个值，表示作为询问信号的回波接收的信号的电平的信号的分析; 分析可以基于表示根据分成两个不同频率子带的电平的所述信号的互相关。 优点在于它可以在无线电调制解调器中实现。
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公开(公告)号：US07276892B2
公开(公告)日：2007-10-02
申请号：US11119285
申请日：2005-04-29
CPC分类号： G01R29/0878 , G01R23/16
摘要： A spectrum analyzer includes an array of frequency-selective bulk acoustic wave (BAW) resonators each tuned to a predetermined different resonant frequency. The spectrum analyzer further includes a broadband BAW resonator that generates acoustic energy when connected to a signal source. An acoustic coupling transmits the acoustic energy generated by the broadband BAW resonator to the frequency-selective BAW resonators so that one of the frequency-selective BAW resonators will generate an electrical output signal if the acoustic energy transmitted from the broadband BAW resonator contains spectral components at its predetermined resonant frequency.
摘要翻译： 频谱分析仪包括频率选择性体声波（BAW）谐振器的阵列，每个谐振器被调谐到预定的不同谐振频率。 频谱分析仪还包括宽带BAW谐振器，当连接到信号源时产生声能。 声耦合将由宽带BAW谐振器产生的声能传输到频率选择性BAW谐振器，使得如果从宽带BAW谐振器传输的声能含有频谱分量，则频率选择性BAW谐振器之一将产生电输出信号 其预定谐振频率。
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