Microwave acoustic wave filters
US8701065B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2013 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Jul 10, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2260/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of designing an acoustic microwave filter comprises selecting a filter section based on frequency response requirements. The filter section includes an input, an output, and a plurality of circuit elements. The circuit elements have at least in-line acoustic resonators or in-shunt acoustic resonators. The method further comprises selecting a value for each circuit element, selecting a number of filter sections, and cascading the selected number of filter sections to create a cascaded filter circuit design, such that at least one pair of immediately adjacent filter sections are connected to each other via their inputs or their outputs. The method further comprises adding parasitic effects to the cascaded filter circuit design to create a pre-optimized filter circuit design, optimizing the pre-optimized filter circuit design to create a final filter circuit design, and constructing the acoustic microwave filter based on the final filter circuit design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.