Clutter suppression method for surface acoustic wave resonator
A surface acoustic wave and clutter suppression technology, applied in the field of communications, can solve the problems affecting the performance of quartz surface acoustic wave resonators, complex processing of sensitive signals, etc., to eliminate high-end clutter, eliminate or suppress clutter, and enhance performance. Effect
Active Publication Date: 2018-09-21
SHOULDER ELECTRONICS CO LTD
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Problems solved by technology
[0003] However, ordinary quartz surface acoustic wave resonators have spurious peaks at the high and bottom ends of the resonant
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[0041] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0042] Please refer to figure 1 with figure 2 , Which shows a flowchart of a method for suppressing clutter of a surface acoustic wave resonator provided by an embodiment of the present invention. Such as figure 1 As shown, the surface acoustic wave resonator includes at least an interdigital transducer and a reflection grid. The reflection grid structure 1 and the reflection grid structure 2 are arranged at both ends of the interdigital transducer, and the interdigital transducer includes input and output electrodes 4 , Interdigital electrode 3, the reflection grid structure includes electrodes constituting the reflection grid. The reflective grids in the reflective grid structures 1 and 2 are short-circuited reflective grids.
[0043] Such ...
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The invention discloses a clutter suppression method of a surface acoustic wave resonator, and belongs to the field of communication. The surface acoustic wave resonator comprises an interdigital transducer and reflection gratings, wherein the reflection gratings are arranged at the two ends of the interdigital transducer. The method comprises the following steps of weighting an aperture of the interdigital transducer by utilizing a first weighting function, wherein the first weighting function is a function which is not symmetric about a surface acoustic wave propagation direction; and adjusting period values of the reflection gratings, and enabling a ratio of the period values of the reflection gratings to a period value of the interdigital transducer to be within a preset range. According to the method, a problem that the range of application is influenced due to the fact that the impure peaks in an existing quartz surface acoustic wave resonator influences the performance of the resonator is solved; the clutter of the surface acoustic wave resonator is eliminated or suppressed, the performance of the surface acoustic wave resonator is enhanced, and the range of application is improved.
Description
Technical field [0001] The embodiment of the present invention relates to the field of communications, and in particular to a method for suppressing clutter of a surface acoustic wave resonator. Background technique [0002] A surface acoustic wave is an elastic wave that is generated and propagated on the surface of a piezoelectric substrate material, and its amplitude decreases rapidly as the depth of the substrate material increases. Quartz surface acoustic wave resonators have the characteristics of low cost, small size, high Q value, and high sensitivity, and are more and more widely used in the signal receiving end of the wireless control field. [0003] However, ordinary quartz surface acoustic wave resonators have spurious peaks at the high end and the bottom end of the resonance peak. The spurious peaks cause the processing of sensitive signals to become complicated and affect the performance of the quartz surface acoustic wave resonator. Summary of the invention [0004] ...
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Login to View More IPC IPC(8): H03H9/02
CPCH03H9/02818
Inventor 毛宏庆李壮陆增天孙昭苏张莉王为标
Owner SHOULDER ELECTRONICS CO LTD