Network synthesis design of microwave acoustic wave filters
Methods for the design of microwave filters comprises comprising preferably the steps of inputting a first set of filter requirements, inputting a selection of circuit element types, inputting a selection of lossless circuit response variables, calculating normalized circuit element values based on the input parameters, and generate a first circuit, insert parasitic effects to the normalized circuit element values of the first circuit, and output at least the first circuit including the post-parasitic effect circuit values. Additional optional steps include: requirements to a normalized design space, performing an equivalent circuit transformation, unmapping the circuit to a real design space, performing a survey, and element removal optimization. Computer implement software, systems, and microwave filters designed in accordance with the method are included.
1. A non-transitory machine readable medium containing instructions that, which when executed by a computer, implements a method for the design of a microwave filter, comprising the steps of:
inputting a set of filter requirements;
inputting a selection of circuit element types;
inputting a selection of lossless circuit response variables;
calculating normalized circuit element values based on the inputted set of filter requirements, circuit element types, and lossless circuit response variables;
generating a circuit comprising the calculated normalized circuit element values;
inserting parasitic effects in the normalized circuit element values of the circuit; and
outputting at least the circuit including the post-parasitic effect circuit values.
2. The machine readable medium of claim 1 , wherein when the instructions are executed by the computer, further comprises the step of mapping the set of requirements to a normalized design space.
3. The machine readable medium of claim 1 , wherein when the instructions are executed by the computer, further comprises the step of performing an equivalent circuit transformation on the circuit.
4. The machine readable medium of claim 2 , wherein when the instructions are executed by the computer, further comprises the step of unmapping the circuit to a real design space.
5. The machine readable medium of claim 1 , wherein when the instructions are executed by the computer, further comprises the step of performing a survey on the circuit.
6. The machine readable medium of claim 1 , wherein when the instructions are executed by the computer, further comprises the step of element removal optimization on the circuit.
7. The machine readable medium of claim 1 , wherein the filter requirements are at least selected from the group comprising: frequency dependent return loss, insertion loss, and linearity.
8. The machine readable medium of claim 1 , wherein the circuit element type is a resonator.
9. The machine readable medium of claim 8 , wherein the resonator is a surface acoustic wave (SAW) resonator.
10. The machine readable medium of claim 1 , wherein when the instructions are executed by the computer, further comprises inputting a selection of circuit structures, wherein the normalized circuit element values are further based on the inputted circuit structure, and wherein the inputted circuit structure is in-line non-resonant-mode.
11. The machine readable medium of claim 4 , wherein the mapping/unmapping is square-root/quadratic mapping/unmapping.
12. The machine readable medium of claim 5 , wherein the survey calculates multiple circuit responses.
13. A system, comprising:
a processor; and
memory storing computer readable software, which when executed by the processor, implements a method for the design of a microwave filter, comprising the steps of:
inputting a set of filter requirements;
inputting a selection of circuit element types;
inputting a selection of lossless circuit response variables;
calculating normalized circuit element values based on the inputted set of filter requirements, circuit element types, and lossless circuit response variables;
generating a circuit comprising the calculated normalized circuit element values;
inserting parasitic effects in the normalized circuit element values of the circuit; and
outputting at least the circuit including the post-parasitic effect circuit values.
14. The system of claim 13 , wherein the computer readable software, when executed, further comprises the step of mapping the set of requirements to a normalized design space.
15. The system of claim 13 , wherein the computer readable software, when executed, further comprises the step of performing an equivalent circuit transformation on the circuit.
16. The system of claim 14 , wherein the computer readable software, when executed, further comprises the step of unmapping the circuit to a real design space.
17. The system of claim 13 , wherein the computer readable software, when executed, further comprises the step of performing a survey on the circuit.
18. The system of claim 13 , wherein the computer readable software, when executed, further comprises the step of element removal optimization on the circuit.
19. The system of claim 13 , wherein the filter requirements are at least selected from the group comprising: frequency dependent return loss, insertion loss, and linearity.
20. The system of claim 13 , wherein the circuit element type is a resonator.
21. The system of claim 20 , wherein the resonator is a surface acoustic wave (SAW) resonator.
22. The system of claim 13 , wherein the computer readable software, when executed, further comprises inputting a selection of circuit structures, wherein the normalized circuit element values are further based on the inputted circuit structure, and wherein the inputted circuit structure is in-line non-resonant-mode.
23. The system of claim 16 , wherein the mapping/unmapping is square-root/quadratic mapping/unmapping.
24. The system of claim 17 , wherein the survey calculates multiple circuit responses.