CN116388717B - Automatic assembly method, system and related equipment for layout of surface acoustic wave filter - Google Patents
Automatic assembly method, system and related equipment for layout of surface acoustic wave filter Download PDFInfo
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- 238000010897 surface acoustic wave method Methods 0.000 title claims abstract description 98
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- 230000008569 process Effects 0.000 claims description 23
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14544—Transducers of particular shape or position
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
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- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
The invention is suitable for the technical field of wireless communication, and particularly relates to an automatic assembly method, system and related equipment of a layout of a surface acoustic wave filter. The invention provides a method for starting from the most basic interdigital and bus bar units, sequentially generating an interdigital transducer and a reflecting grating layout, and finally assembling the interdigital transducer and the reflecting grating layout into a complete surface acoustic wave filter device layout.
Description
Technical Field
The invention is suitable for the technical field of wireless communication, and particularly relates to an automatic assembly method, system and related equipment of a layout of a surface acoustic wave filter.
Background
The surface acoustic wave filter (SAW) is a filter based on the piezoelectric effect, has the advantages of large design flexibility, compatibility of analog and digital, excellent frequency selection interval, high reliability, small volume and the like, and therefore has wide application in the field of radio frequency communication. The surface acoustic wave filter can be mainly divided into a resonator, a dual-mode surface acoustic wave structure (DMS) and the like, and the basic constituent units of the surface acoustic wave filter are an interdigital transducer (IDT) and a reflection grating, and the interdigital transducer and the reflection grating are also composed of basic units such as bus bars. The layout of the surface acoustic wave filter is used for designing and simulating devices, the layout form has great flexibility, such as the layout form comprises different numbers of interdigital transducers and reflection grids, the interdigital shapes can be designed into a rectangle or other different shapes, and the period of the interdigital electrodes can be a constant value or gradual change; the shape of the bus bar may not be fixed, or the like. In view of the above, if the drawing operation is performed by manual operations in the process of drawing the layout of the surface acoustic wave filter, a lot of time is consumed and the probability of errors is extremely high.
The conventional method for drawing the layout of the surface acoustic wave filter device generally uses layout design software such as ADS and the like, a designer needs to draw an interdigital basic unit, an interdigital transducer and a reflecting grating step by step in the software, and finally the required layout of the surface acoustic wave filter device is generated, and obviously, the process consumes huge time and labor; in another common drawing method, a plate gallery is imported into layout design software, the plate gallery comprises a fixed number of basic structures such as interdigital transducers and reflective grids, and typesetting can be performed by dragging and selecting the basic structures during drawing, but the drawing flexibility is insufficient due to insufficient structural parameters in the gallery, and the process still needs human participation, so that the efficiency is still to be improved.
Disclosure of Invention
The invention provides an automatic assembly method, an automatic assembly system and related equipment of a surface acoustic wave filter layout, and aims to solve the problems that manual intervention is required for assembly of the conventional surface acoustic wave filter layout and flexibility is insufficient.
In a first aspect, the present invention provides an automatic assembly method of a surface acoustic wave filter layout, the automatic assembly method comprising the steps of:
s1, establishing an interdigital library containing interdigital units with different shapes and a bus bar library containing bus bar units with different shapes, determining surface acoustic wave filters to be subjected to layout assembly, and taking all the surface acoustic wave filters to be subjected to layout assembly as a list to be processed;
s2, selecting one surface acoustic wave filter from the list to be processed, and respectively selecting and assembling an interdigital unit and a bus bar unit corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library according to a preset interdigital transducer arrangement rule to obtain an interdigital transducer layout;
s3, selecting the interdigital units and the bus bar units corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library respectively according to a preset reflection grid arrangement rule, and assembling to obtain a reflection grid layout;
s4, assembling the interdigital transducer layout and the reflecting grating layout according to a preset layout arrangement rule to obtain a surface acoustic wave filter layout, and updating the list to be processed to remove the surface acoustic wave filter assembled by the layout from the list to be processed;
s5, judging whether the list to be processed is empty or not:
if not, returning to the step S2;
if yes, outputting all the assembled surface acoustic wave filter layouts.
Further, the first interdigital unit has a shape with an interruption gap, and the second interdigital unit has a shape with an interruption gap.
Still further, at least a portion of the shape of the busbar unit has a chamfer.
Further, the interdigital unit and the bus bar unit are rectangular, and the preset interdigital transducer arrangement rule specifically comprises:
selecting a first interdigital unit for assembly, taking one vertex of the first interdigital unit as an origin of coordinates, taking two sides connected with the origin of coordinates in the first interdigital unit as an abscissa axis and an ordinate axis respectively, sequentially arranging subsequent first interdigital units in the direction of the abscissa axis at a first preset interval, arranging bus bar units in the direction of the ordinate axis, and enabling the first interdigital units to be positioned between two adjacent bus bar units, wherein the first interdigital units are connected with the bus bar units, the first preset interval is defined as gap1, and the first preset interval gap1 satisfies the following relational expression (1):
gap1 = pitch1 * (1 – mr1) * α（1）；
in the relation (1), pitch1 represents a grid period of the interdigital transducer corresponding to the interdigital transducer layout, mr1 represents a design parameter of the interdigital transducer corresponding to the interdigital transducer layout, mr1(0.0, 1.0), alpha represents the process fluctuation coefficient, alpha +.>(0.0，1.0)。
Further, the preset reflective grating arrangement rule specifically includes:
selecting the second interdigital units for assembly, taking one vertex of a first second interdigital unit as an origin of coordinates, taking two sides connected with the origin of coordinates in the first second interdigital unit as an abscissa axis and an ordinate axis respectively, sequentially arranging the subsequent second interdigital units in the direction of the abscissa axis at a second preset interval, arranging the bus bar units in the direction of the ordinate axis, and enabling the second interdigital units to be positioned between two adjacent bus bar units, wherein the second interdigital units are connected with the bus bar units, the second preset interval is defined as gap2, and the second preset interval gap2 satisfies the following relational expression (2):
gap2 = pitch2 * (1 – mr2) * α（2）；
in the relation (2), pitch2 represents the grid period of the reflective grid corresponding to the reflective grid layout, mr2 represents the design parameter of the reflective grid corresponding to the reflective grid layout, mr2(0.0，1.0)。
Further, the preset layout arrangement rule specifically includes:
sequentially arranging the subsequent interdigital transducer layouts or the reflecting grating layouts in a direction of an abscissa axis according to a third preset interval by taking the first interdigital transducer layout or the reflecting grating layout as an origin of coordinates, wherein the third preset interval is defined as gap3, and the third preset interval gap3 satisfies the following relational expression (3):
gap3 = [pitch1 * (1 - mr1) + pitch2 * (1 - mr2)] * α（3）。
in a second aspect, the present invention also provides an automatic assembly system for a surface acoustic wave filter layout, including:
the system comprises a library establishing module, a layout assembling module and a processing module, wherein the library establishing module is used for establishing an interdigital library containing interdigital units with different shapes and a bus bar library containing bus bar units with different shapes, determining surface acoustic wave filters to be subjected to layout assembling, and taking all the surface acoustic wave filters to be subjected to layout assembling as a list to be processed;
the interdigital assembling module is used for selecting one surface acoustic wave filter from the to-be-processed list, selecting the interdigital units and the bus bar units corresponding to the electrical structures of the surface acoustic wave filter from the interdigital library and the bus bar library respectively according to a preset interdigital transducer arrangement rule, and assembling to obtain an interdigital transducer layout;
the bus bar assembly module is used for respectively selecting the interdigital units and the bus bar units corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library according to a preset reflection grid arrangement rule and assembling the interdigital units and the bus bar units to obtain a reflection grid layout;
the layout assembly module is used for assembling the interdigital transducer layout and the reflecting grating layout according to a preset layout arrangement rule to obtain a surface acoustic wave filter layout, and updating the to-be-processed list to remove the surface acoustic wave filter assembled by the layout from the to-be-processed list;
the batch processing module is used for judging whether the list to be processed is empty or not:
if not, returning to the interdigital assembly module for continuous processing;
if yes, outputting all the assembled surface acoustic wave filter layouts.
In a third aspect, the present invention also provides a computer device comprising: the automatic assembly method for the surface acoustic wave filter layout comprises a memory, a processor and an automatic assembly program for the surface acoustic wave filter layout, wherein the automatic assembly program is stored in the memory and can run on the processor, and the steps in the automatic assembly method for the surface acoustic wave filter layout are realized when the processor executes the automatic assembly program for the surface acoustic wave filter layout.
In a fourth aspect, the present invention also provides a computer readable storage medium, on which an automatic assembly program of a saw filter layout is stored, which when executed by a processor, implements the steps in the automatic assembly method of a saw filter layout according to any one of the above embodiments.
The invention has the beneficial effects that the method for finally assembling the complete surface acoustic wave filter device layout by starting from the most basic interdigital and bus bar units and sequentially generating the interdigital transducer and the reflecting grating layout can be provided, the method can automatically assemble the layout according to preset rules, and basic geometric parameters of a library of units can be selected according to the surface acoustic wave filter devices assembled as required.
Drawings
FIG. 1 is a block flow diagram of steps of an automatic assembly method of a SAW filter layout provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an interdigital unit according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a bus bar unit according to an embodiment of the present invention;
FIG. 4 is an assembled schematic view of an interdigital transducer provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating an assembly of a reflective grating according to an embodiment of the present invention;
FIG. 6 is an assembly schematic diagram of a SAW filter layout provided by an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an automatic assembly system of a surface acoustic wave filter layout according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a block flow diagram of steps of an automatic assembly method of a layout of a surface acoustic wave filter according to an embodiment of the present invention, where the surface acoustic wave filter in the embodiment of the present invention refers to a filter device having an interdigital and bus bar structure, and the layout refers to a graphic file, such as a gds file, for designing the surface acoustic wave filter, and the automatic assembly method includes the following steps:
s1, establishing an interdigital library containing interdigital units with different shapes and a bus bar library containing bus bar units with different shapes, determining surface acoustic wave filters to be subjected to layout assembly, and taking all the surface acoustic wave filters to be subjected to layout assembly as a list to be processed.
Further, the first interdigital unit has a shape with an interruption gap, and the second interdigital unit has a shape with an interruption gap.
Still further, at least a portion of the shape of the busbar unit has a chamfer.
The structure examples of the finger inserting unit and the bus bar unit established in the embodiment of the present invention are shown in fig. 2 and 3, where the geometry of the finger inserting unit is related to the electrical performance of the saw filter, such as the center frequency, bandwidth, insertion loss, etc. of the passband, and is also related to the process of the manufacturing and processing factory of the saw filter in the actual implementation process, and in fig. 2, the shapes of the three finger inserting units are illustrated, and in order to facilitate layout drawing, the finger inserting units are designed into rectangular shapes, and geometric parameters of the same duration, width, etc. can be defined according to actual needs. In addition, because of the manufacturing process error, in order to ensure that the factory manufactured finger structure has the same shape as the unit shape designed in the embodiment of the present invention, as shown by the finger 3 in fig. 1, an additional component may be added to the corner of the gap, so as to form a fault tolerant design, so as to reduce the error of the manufacturing process.
In the surface acoustic wave filter, the bus bars are mainly used for connecting the interdigital transducer and the interdigital of the reflecting grating and uniformly receiving and transmitting electric signals. In the embodiment of the present invention, since the bus bar unit area actually required is large, electromagnetic interference is easily generated at high frequency, and a lead angle is required to be formed on the corners of the rectangular shape, as shown in the bus bar 2 in fig. 3.
In order to realize the function of batch automatic processing, the embodiment of the invention establishes a list to be processed in the beginning according to all the SAW filters which can be subjected to layout assembly as required, and in the whole process, whether the layout assembly is required to be automatically carried out according to the filters marked in the list can be determined according to the list to be processed.
S2, selecting one surface acoustic wave filter from the to-be-processed list, and respectively selecting and assembling an interdigital unit and a bus bar unit corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library according to a preset interdigital transducer arrangement rule to obtain an interdigital transducer layout.
Referring to fig. 4, fig. 4 is an assembly schematic diagram of an interdigital transducer according to an embodiment of the present invention, and further, the preset interdigital transducer arrangement rule specifically includes:
according to the characteristics of the interdigital transducer structure, the first interdigital units are selected for assembly, one vertex of the first interdigital unit is taken as a coordinate origin, two sides connected with the coordinate origin in the first interdigital unit are respectively taken as an abscissa axis and an ordinate axis, the subsequent first interdigital units are sequentially arranged at a first preset interval in the direction of the abscissa axis, and the bus bar units are arranged in the direction of the ordinate axis, so that the first interdigital units are positioned between two adjacent bus bar units, and the first interdigital units are connected with the bus bar units. In order to conform to the actual structure of the filter device, it is necessary to design the positions of the interruption intervals in the cells according to the shape shown in fig. 4 when the arrangement of the first finger inserting cells is performed.
Wherein the first preset interval is defined as gap1, and the first preset interval gap1 satisfies the following relation (1):
gap1 = pitch1 * (1 – mr1) * α（1）；
in the relation (1), pitch1 represents a grid period of the interdigital transducer corresponding to the interdigital transducer layout, mr1 represents a design parameter of the interdigital transducer corresponding to the interdigital transducer layout, mr1(0.0, 1.0), alpha represents the process fluctuation coefficient, alpha +.>(0.0，1.0)。
S3, according to a preset reflection grid arrangement rule, selecting the interdigital unit and the bus bar unit corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library respectively, and assembling to obtain a reflection grid layout.
Referring to fig. 5, fig. 5 is an assembly schematic diagram of a reflective grating according to an embodiment of the present invention, and further, the preset reflective grating arrangement rule specifically includes:
and selecting the second interdigital units for assembly, taking one vertex of the first second interdigital units as an origin of coordinates, taking two sides connected with the origin of coordinates in the first second interdigital units as an abscissa axis and an ordinate axis respectively, sequentially arranging the subsequent second interdigital units in the direction of the abscissa axis at a second preset interval, and arranging the bus bar units in the direction of the ordinate axis, so that the second interdigital units are positioned between two adjacent bus bar units, and the second interdigital units are connected with the bus bar units. The process is similar to step S2, except that the interdigital transducers and the reflective grating are assembled by selecting the interdigital units without intervals according to the actual structures of the interdigital transducers and the reflective grating, so that only units with different shapes are added according to the needs in the arrangement process, and therefore, in the implementation process, the sequence of the steps S2 and S3 can be exchanged, or the steps can be set to be performed simultaneously for improving the working efficiency.
Wherein the second preset interval is defined as gap2, and the second preset interval gap2 satisfies the following relation (2):
gap2 = pitch2 * (1 – mr2) * α（2）；
in the relation (2), pitch2 represents the grid period of the reflective grid corresponding to the reflective grid layout, mr2 represents the design parameter of the reflective grid corresponding to the reflective grid layout, mr2(0.0，1.0)。
S4, assembling the interdigital transducer layout and the reflecting grating layout according to a preset layout arrangement rule to obtain a surface acoustic wave filter layout, and updating the to-be-processed list to remove the surface acoustic wave filter assembled by the layout from the to-be-processed list.
Referring to fig. 6, fig. 6 is an assembly schematic diagram of a layout of a surface acoustic wave filter according to an embodiment of the present invention, and further, the preset layout arrangement rule specifically includes:
sequentially arranging the subsequent interdigital transducer layouts or the reflecting grating layouts in a direction of an abscissa axis according to a third preset interval by taking the first interdigital transducer layout or the reflecting grating layout as an origin of coordinates, wherein the third preset interval is defined as gap3, and the third preset interval gap3 satisfies the following relational expression (3):
gap3 = [pitch1 * (1 - mr1) + pitch2 * (1 - mr2)] * α（3）。
s5, judging whether the list to be processed is empty, if not, returning to the step S2; if yes, outputting all the surface acoustic wave filter layouts.
The updating of the list to be processed in the step S4 means that the list entry corresponding to the assembled surface acoustic wave filter layout is removed, so that only surface acoustic wave filters which are not assembled always exist in the list to be processed, and in the actual implementation process, new layout assembly can be performed according to the list to be processed in the mass assembly process by continuously updating the list, thereby meeting the automatic functional requirement; and when the list is empty, the fact that the assembly of all the surface acoustic wave filter layouts is completed at the moment is indicated, and the layout assembly flow of automatic batch processing is completed after all the surface acoustic wave filter layouts are output.
It should be noted that although the embodiment of the present invention is described with reference to the surface acoustic wave filter, it is envisioned that layout assembly of any filter device formed by combining the interdigital structure and the bus bar structure may be implemented based on the automatic assembly method of the surface acoustic wave filter layout provided by the embodiment of the present invention.
The invention has the beneficial effects that the method for finally assembling the complete surface acoustic wave filter device layout by starting from the most basic interdigital and bus bar units and sequentially generating the interdigital transducer and the reflecting grating layout can be provided, the method can automatically assemble the layout according to preset rules, and basic geometric parameters of a library of units can be selected according to the surface acoustic wave filter devices assembled as required.
The embodiment of the present invention further provides an automatic assembly system for a surface acoustic wave filter layout, referring to fig. 7, fig. 7 is a schematic structural diagram of the automatic assembly system for a surface acoustic wave filter layout provided by the embodiment of the present invention, where the automatic assembly system 200 for a surface acoustic wave filter layout includes:
a library establishing module 201, configured to establish an interdigital library including interdigital units of different shapes and a busbar library including busbar units of different shapes, determine surface acoustic wave filters to be subjected to layout assembly, and use all the surface acoustic wave filters to be subjected to layout assembly as a list to be processed;
an interdigital assembly module 202, configured to select one of the saw filters from the to-be-processed list, select the interdigital unit and the busbar unit corresponding to the electrical structure of the saw filter from the interdigital library and the busbar library respectively according to a preset interdigital transducer arrangement rule, and assemble the interdigital units to obtain an interdigital transducer layout;
a busbar assembly module 203, configured to select the interdigital unit and the busbar unit corresponding to the electrical structure of the saw filter from the interdigital library and the busbar library respectively according to a preset arrangement rule of the reflective grating, and assemble the interdigital unit and the busbar unit to obtain a reflective grating layout;
the layout assembling module 204 is configured to assemble the interdigital transducer layout and the reflection gate layout according to a preset layout arrangement rule, obtain a surface acoustic wave filter layout, and update the to-be-processed list to remove the surface acoustic wave filter assembled by the layout from the to-be-processed list;
the batch processing module 205 is configured to determine whether the to-be-processed list is empty:
if not, returning to the finger assembly module 202 for continuing processing;
if yes, outputting all the assembled surface acoustic wave filter layouts.
The automatic assembly system 200 of the saw filter layout can implement the steps in the automatic assembly method of the saw filter layout in the above embodiment, and can implement the same technical effects, and the description in the above embodiment is omitted herein.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a computer device according to an embodiment of the present invention, where the computer device 300 includes: a memory 302, a processor 301, and an automated assembly program of a saw filter layout stored on the memory 302 and executable on the processor 301.
The processor 301 invokes an automatic assembly program of the saw filter layout stored in the memory 302, and executes the steps in the automatic assembly method of the saw filter layout provided in the embodiment of the present invention, please refer to fig. 1, specifically including the following steps:
s1, establishing an interdigital library containing interdigital units with different shapes and a bus bar library containing bus bar units with different shapes, determining surface acoustic wave filters to be subjected to layout assembly, and taking all the surface acoustic wave filters to be subjected to layout assembly as a list to be processed;
s2, selecting one surface acoustic wave filter from the list to be processed, and respectively selecting and assembling an interdigital unit and a bus bar unit corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library according to a preset interdigital transducer arrangement rule to obtain an interdigital transducer layout;
s3, selecting the interdigital units and the bus bar units corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library respectively according to a preset reflection grid arrangement rule, and assembling to obtain a reflection grid layout;
s4, assembling the interdigital transducer layout and the reflecting grating layout according to a preset layout arrangement rule to obtain a surface acoustic wave filter layout, and updating the list to be processed to remove the surface acoustic wave filter assembled by the layout from the list to be processed;
s5, judging whether the list to be processed is empty or not:
if not, returning to the step S2;
if yes, outputting all the assembled surface acoustic wave filter layouts.
Further, the first interdigital unit has a shape with an interruption gap, and the second interdigital unit has a shape with an interruption gap.
Still further, at least a portion of the shape of the busbar unit has a chamfer.
Further, the interdigital unit and the bus bar unit are rectangular, and the preset interdigital transducer arrangement rule specifically comprises:
selecting a first interdigital unit for assembly, taking one vertex of the first interdigital unit as an origin of coordinates, taking two sides connected with the origin of coordinates in the first interdigital unit as an abscissa axis and an ordinate axis respectively, sequentially arranging subsequent first interdigital units in the direction of the abscissa axis at a first preset interval, arranging bus bar units in the direction of the ordinate axis, and enabling the first interdigital units to be positioned between two adjacent bus bar units, wherein the first interdigital units are connected with the bus bar units, the first preset interval is defined as gap1, and the first preset interval gap1 satisfies the following relational expression (1):
gap1 = pitch1 * (1 – mr1) * α（1）；
in the relation (1), pitch1 represents a grid period of the interdigital transducer corresponding to the interdigital transducer layout, mr1 represents a design parameter of the interdigital transducer corresponding to the interdigital transducer layout, mr1(0.0, 1.0), alpha represents the process fluctuation coefficient, alpha +.>(0.0，1.0)。
Further, the preset reflective grating arrangement rule specifically includes:
selecting the second interdigital units for assembly, taking one vertex of a first second interdigital unit as an origin of coordinates, taking two sides connected with the origin of coordinates in the first second interdigital unit as an abscissa axis and an ordinate axis respectively, sequentially arranging the subsequent second interdigital units in the direction of the abscissa axis at a second preset interval, arranging the bus bar units in the direction of the ordinate axis, and enabling the second interdigital units to be positioned between two adjacent bus bar units, wherein the second interdigital units are connected with the bus bar units, the second preset interval is defined as gap2, and the second preset interval gap2 satisfies the following relational expression (2):
gap2 = pitch2 * (1 – mr2) * α（2）；
in the relation (2), pitch2 represents the grid period of the reflective grid corresponding to the reflective grid layout, mr2 represents the design parameter of the reflective grid corresponding to the reflective grid layout, mr2(0.0，1.0)。
Further, the preset layout arrangement rule specifically includes:
sequentially arranging the subsequent interdigital transducer layouts or the reflecting grating layouts in a direction of an abscissa axis according to a third preset interval by taking the first interdigital transducer layout or the reflecting grating layout as an origin of coordinates, wherein the third preset interval is defined as gap3, and the third preset interval gap3 satisfies the following relational expression (3):
gap3 = [pitch1 * (1 - mr1) + pitch2 * (1 - mr2)] * α（3）。
the computer device 300 provided in the embodiment of the present invention can implement the steps in the automatic assembly method of the saw filter layout in the above embodiment, and can implement the same technical effects, and is not described herein again with reference to the description in the above embodiment.
The embodiment of the invention also provides a computer readable storage medium, on which an automatic assembly program of the surface acoustic wave filter layout is stored, and when the automatic assembly program of the surface acoustic wave filter layout is executed by a processor, the processes and steps in the automatic assembly method of the surface acoustic wave filter layout provided by the embodiment of the invention are realized, and the same technical effects can be realized, so that repetition is avoided and no redundant description is provided herein.
Those skilled in the art will appreciate that implementing all or part of the above-described embodiments of the method may be accomplished by instructing the associated hardware through an automated assembly process of the saw filter layout, where the process may be stored on a computer readable storage medium, and where the process, when executed, may include the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM) or the like.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
While the embodiments of the present invention have been illustrated and described in connection with the drawings, what is presently considered to be the most practical and preferred embodiments of the invention, it is to be understood that the invention is not limited to the disclosed embodiments, but on the contrary, is intended to cover various equivalent modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (5)
1. An automatic assembly method of a surface acoustic wave filter layout is characterized by comprising the following steps:
s1, establishing an interdigital library containing interdigital units with different shapes and a bus bar library containing bus bar units with different shapes, determining surface acoustic wave filters to be subjected to layout assembly, and taking all the surface acoustic wave filters to be subjected to layout assembly as a list to be processed, wherein the interdigital units comprise a first interdigital unit and a second interdigital unit, and the shape of the first interdigital unit is provided with an interruption gap;
s2, selecting one surface acoustic wave filter from the list to be processed, and respectively selecting and assembling an interdigital unit and a bus bar unit corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library according to a preset interdigital transducer arrangement rule to obtain an interdigital transducer layout;
s3, selecting the interdigital units and the bus bar units corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library respectively according to a preset reflection grid arrangement rule, and assembling to obtain a reflection grid layout;
s4, assembling the interdigital transducer layout and the reflecting grating layout according to a preset layout arrangement rule to obtain a surface acoustic wave filter layout, and updating the list to be processed to remove the surface acoustic wave filter assembled by the layout from the list to be processed;
s5, judging whether the list to be processed is empty or not:
if not, returning to the step S2;
if yes, outputting all the assembled surface acoustic wave filter layouts;
the busbar unit is arranged on the bus bar unit, wherein the interdigital unit and the busbar unit are both rectangular, and the preset interdigital transducer arrangement rule specifically comprises:
selecting a first interdigital unit for assembly, taking one vertex of the first interdigital unit as an origin of coordinates, taking two sides connected with the origin of coordinates in the first interdigital unit as an abscissa axis and an ordinate axis respectively, sequentially arranging subsequent first interdigital units in the direction of the abscissa axis at a first preset interval, arranging bus bar units in the direction of the ordinate axis, and enabling the first interdigital units to be positioned between two adjacent bus bar units, wherein the first interdigital units are connected with the bus bar units, the first preset interval is defined as gap1, and the first preset interval gap1 satisfies the following relational expression (1):
（1）；
in the relation (1), pitch1 represents the grid period of the interdigital transducer corresponding to the interdigital transducer layout, mr1 represents the design parameter of the interdigital transducer corresponding to the interdigital transducer layout,alpha represents the process fluctuation coefficient, < >>；
The preset reflective grid arrangement rule specifically comprises the following steps:
selecting the second interdigital units for assembly, taking one vertex of a first second interdigital unit as an origin of coordinates, taking two sides connected with the origin of coordinates in the first second interdigital unit as an abscissa axis and an ordinate axis respectively, sequentially arranging the subsequent second interdigital units in the direction of the abscissa axis at a second preset interval, arranging the bus bar units in the direction of the ordinate axis, and enabling the second interdigital units to be positioned between two adjacent bus bar units, wherein the second interdigital units are connected with the bus bar units, the second preset interval is defined as gap2, and the second preset interval gap2 satisfies the following relational expression (2):
（2）；
in the relation (2), pitch2 represents the grid period of the reflective grid corresponding to the reflective grid layout, mr2 represents the design parameter of the reflective grid corresponding to the reflective grid layout,；
the preset layout arrangement rule specifically comprises the following steps:
sequentially arranging the subsequent interdigital transducer layouts or the reflecting grating layouts in a direction of an abscissa axis according to a third preset interval by taking the first interdigital transducer layout or the reflecting grating layout as an origin of coordinates, wherein the third preset interval is defined as gap3, and the third preset interval gap3 satisfies the following relational expression (3):
（3）。
2. the automatic assembly method of a saw filter layout according to claim 1, wherein at least a portion of the busbar unit has a shape with a chamfer.
3. An automatic assembly system for a surface acoustic wave filter layout, comprising:
the system comprises a library establishing module, a layout assembling module and a layout assembling module, wherein the library establishing module is used for establishing an interdigital library containing interdigital units with different shapes and a busbar library containing busbar units with different shapes, determining surface acoustic wave filters to be subjected to layout assembling, taking all the surface acoustic wave filters to be subjected to layout assembling as a list to be processed, and the interdigital units comprise a first interdigital unit and a second interdigital unit, wherein the shape of the first interdigital unit is provided with an interruption gap;
the interdigital assembling module is used for selecting one surface acoustic wave filter from the to-be-processed list, selecting the interdigital units and the bus bar units corresponding to the electrical structures of the surface acoustic wave filter from the interdigital library and the bus bar library respectively according to a preset interdigital transducer arrangement rule, and assembling to obtain an interdigital transducer layout;
the bus bar assembly module is used for respectively selecting the interdigital units and the bus bar units corresponding to the electrical structure of the surface acoustic wave filter from the interdigital library and the bus bar library according to a preset reflection grid arrangement rule and assembling the interdigital units and the bus bar units to obtain a reflection grid layout;
the layout assembly module is used for assembling the interdigital transducer layout and the reflecting grating layout according to a preset layout arrangement rule to obtain a surface acoustic wave filter layout, and updating the to-be-processed list to remove the surface acoustic wave filter assembled by the layout from the to-be-processed list;
the batch processing module is used for judging whether the list to be processed is empty or not:
if not, returning to the interdigital assembly module for continuous processing;
if yes, outputting all the assembled surface acoustic wave filter layouts;
the busbar unit is arranged on the bus bar unit, wherein the interdigital unit and the busbar unit are both rectangular, and the preset interdigital transducer arrangement rule specifically comprises:
selecting a first interdigital unit for assembly, taking one vertex of the first interdigital unit as an origin of coordinates, taking two sides connected with the origin of coordinates in the first interdigital unit as an abscissa axis and an ordinate axis respectively, sequentially arranging subsequent first interdigital units in the direction of the abscissa axis at a first preset interval, arranging bus bar units in the direction of the ordinate axis, and enabling the first interdigital units to be positioned between two adjacent bus bar units, wherein the first interdigital units are connected with the bus bar units, the first preset interval is defined as gap1, and the first preset interval gap1 satisfies the following relational expression (1):
（1）；
in the relation (1), pitch1 represents the grid period of the interdigital transducer corresponding to the interdigital transducer layout, mr1 represents the design parameter of the interdigital transducer corresponding to the interdigital transducer layout,alpha represents the process fluctuation coefficient, < >>；
The preset reflective grid arrangement rule specifically comprises the following steps:
selecting the second interdigital units for assembly, taking one vertex of a first second interdigital unit as an origin of coordinates, taking two sides connected with the origin of coordinates in the first second interdigital unit as an abscissa axis and an ordinate axis respectively, sequentially arranging the subsequent second interdigital units in the direction of the abscissa axis at a second preset interval, arranging the bus bar units in the direction of the ordinate axis, and enabling the second interdigital units to be positioned between two adjacent bus bar units, wherein the second interdigital units are connected with the bus bar units, the second preset interval is defined as gap2, and the second preset interval gap2 satisfies the following relational expression (2):
（2）；
in the relation (2), pitch2 represents the grid period of the reflective grid corresponding to the reflective grid layout, mr2 represents the design parameter of the reflective grid corresponding to the reflective grid layout,；
the preset layout arrangement rule specifically comprises the following steps:
sequentially arranging the subsequent interdigital transducer layouts or the reflecting grating layouts in a direction of an abscissa axis according to a third preset interval by taking the first interdigital transducer layout or the reflecting grating layout as an origin of coordinates, wherein the third preset interval is defined as gap3, and the third preset interval gap3 satisfies the following relational expression (3):
（3）。
4. a computer device, comprising: memory, a processor and an automatic assembly program of a saw filter layout stored on the memory and operable on the processor, the processor implementing the steps in the automatic assembly method of a saw filter layout according to any one of claims 1-2 when executing the automatic assembly program of a saw filter layout.
5. A computer-readable storage medium, wherein an automatic assembly program of a saw filter layout is stored on the computer-readable storage medium, which when executed by a processor, implements the steps in the automatic assembly method of a saw filter layout according to any one of claims 1-2.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005217709A (en) * | 2004-01-29 | 2005-08-11 | Samsung Yokohama Research Institute Co Ltd | Saw matched filter and transmitter and receiver employing the same |
| CN206313742U (en) * | 2016-12-23 | 2017-07-07 | 无锡市好达电子有限公司 | A kind of SAW filter reflecting grating structure |
| CN114221635A (en) * | 2022-02-21 | 2022-03-22 | 成都频岢微电子有限公司 | Resonator used as radio frequency front end surface acoustic wave filter |
| CN114866062A (en) * | 2022-04-19 | 2022-08-05 | 天通瑞宏科技有限公司 | Acoustic surface wave resonator |
| CN115392144A (en) * | 2022-10-31 | 2022-11-25 | 深圳飞骧科技股份有限公司 | Method for automatic design of acoustic surface filter, related system and storage medium |
| CN115688848A (en) * | 2022-11-04 | 2023-02-03 | 南京航空航天大学 | Surface acoustic wave label structure adopting mask and coding identification method thereof |
| CN115842527A (en) * | 2022-12-21 | 2023-03-24 | 天通瑞宏科技有限公司 | Surface acoustic wave resonator and filter of heterogeneous metal electrode |
| WO2023045732A1 (en) * | 2021-09-27 | 2023-03-30 | 江苏卓胜微电子股份有限公司 | Surface acoustic wave resonator and radio frequency filter |
-
2023
- 2023-06-02 CN CN202310648307.1A patent/CN116388717B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005217709A (en) * | 2004-01-29 | 2005-08-11 | Samsung Yokohama Research Institute Co Ltd | Saw matched filter and transmitter and receiver employing the same |
| CN206313742U (en) * | 2016-12-23 | 2017-07-07 | 无锡市好达电子有限公司 | A kind of SAW filter reflecting grating structure |
| WO2023045732A1 (en) * | 2021-09-27 | 2023-03-30 | 江苏卓胜微电子股份有限公司 | Surface acoustic wave resonator and radio frequency filter |
| CN114221635A (en) * | 2022-02-21 | 2022-03-22 | 成都频岢微电子有限公司 | Resonator used as radio frequency front end surface acoustic wave filter |
| CN114866062A (en) * | 2022-04-19 | 2022-08-05 | 天通瑞宏科技有限公司 | Acoustic surface wave resonator |
| CN115392144A (en) * | 2022-10-31 | 2022-11-25 | 深圳飞骧科技股份有限公司 | Method for automatic design of acoustic surface filter, related system and storage medium |
| CN115688848A (en) * | 2022-11-04 | 2023-02-03 | 南京航空航天大学 | Surface acoustic wave label structure adopting mask and coding identification method thereof |
| CN115842527A (en) * | 2022-12-21 | 2023-03-24 | 天通瑞宏科技有限公司 | Surface acoustic wave resonator and filter of heterogeneous metal electrode |
Non-Patent Citations (1)
| Title |
|---|
| 声表面波可程序选通滤波组件;黄广伦等;《压电与声光》;第23卷(第3期);第167-169页 * |
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