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BVD model-based BAW filter design method and device and equipment

A filter design and filter technology, applied in the filter field, can solve problems such as design errors, failure to consider the influence of multiple harmonic oscillators, inaccurate filter design parameters, etc., and achieve the effect of accurate parameters and good impedance matching

Active Publication Date: 2018-01-09
COMBA TELECOM TECH (GUANGZHOU) CO LTD
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Problems solved by technology

[0004] If the field simulation is only performed on a single harmonic oscillator as in the prior art, the influence between multiple harmonic oscillators is not considered, which will bring a lot of errors to the design and reduce the guiding role of the simulation design for filter manufacturing. lead to inaccurate filter design parameters

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  • BVD model-based BAW filter design method and device and equipment
  • BVD model-based BAW filter design method and device and equipment
  • BVD model-based BAW filter design method and device and equipment

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Embodiment Construction

[0053] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0054] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with their meaning in the context of the prior art, and unless specifically defined as herein, are not intended to be idealized or over...

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Abstract

The invention discloses a BVD model-based BAW filter design method and device and equipment. The method comprises the following steps of: constructing an original equivalent circuit model, consistingof a plurality of serial and / or parallel harmonic oscillators, of a BAW filter according to a BVD circuit model, and setting an optimum parameter according to optimization characteristics of the BAW filter; extracting a circuit model parameter of a single harmonic oscillator; constructing an initial layout of the BAW filter according to the extracted circuit model parameter of the single harmonicoscillator; optimizing the initial layout and extracting the circuit model parameter of the BAW filter and the circuit model parameter of the single harmonic oscillator so as to obtain an optimizationparameter; and if a difference value between the optimum parameter and the optimization parameter exceeds a preset range, continuing to adjust the optimized initial layout until the difference valueaccords with the preset range. According to the method and device and the equipment, correct equivalence between physical field simulation and the circuit models in BAW filter design is realized and more correct results are provided for the production of filters.

Description

【Technical field】 [0001] The invention relates to the technical field of filters, in particular to a BAW filter design method, device and equipment based on a BVD model. 【Background technique】 [0002] With the development of communication technology, miniaturized filters with excellent performance are widely favored by communication equipment manufacturers. One of the most important types is the BAW (Bulk Acoustic Wave) filter based on the micro-electromechanical system (MEMS) process. It belongs to small and medium power products and has broad application prospects in the future fifth generation (5G) mobile communication equipment, making the design method of BAW filter a hot research topic. [0003] In the past, people have conducted extensive research on the development of conventional cavity filters. At present, their simulation design is relatively mature, and this type of filter field simulation only involves a single electromagnetic field, and it is easy to complete ...

Claims

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Application Information

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IPC IPC(8): G06F17/50H03H9/02
Inventor 邸英杰王勇涛丁海郭春波
Owner COMBA TELECOM TECH (GUANGZHOU) CO LTD
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