# US 7,614,021 B1 · Optimal amplifier performance selection method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,614,021 B1 - Document ID: US7614021B1 - Status: Granted - Kind: B1 - Application number: 11/752,034 - Filed: 2007-05-22 - Granted: 2009-11-03 - Earliest claimed: 2007-05-22 - Assignees: The United States of America as represented by the Secretary of the Navy - Inventors: Jeffery C. Allen - Web page: https://patentgrep.com/patent/US7614021B1 ## CPC - G06F 30/367: Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A method of determining an amplifier performance is provided. One embodiment establishes a number of amplifier performance constraints. A search is then conducted for an input and an output disk that satisfy the amplifier performance constraints. A vector index is then generated that includes a load reflectance SL and a generator reflectance SG at a number of different radio frequencies. The amplifier performance constraints are then input into the vector index and the load reflectances SL and generator reflectances SG that meet the amplifier performance constraints are determined. ## Claims ### Claim 1 A computer readable storage medium having a method for determining an amplifier performance encoded thereon, the method represented by computer executable instructions, the method comprising the steps of: establishing a number of amplifier performance constraints; conducting a search for an input and an output disk that satisfy the amplifier performance constraints; generating a vector index comprising a load reflectance SL and a generator reflectance SG at a plurality of radio frequencies; inputting the amplifier performance constraints into the vector index; and determining which load reflectances SL and generator reflectances SG meet the amplifier performance constraints. ### Claim 2 (depends on 1) The computer readable storage medium of claim 1, wherein the number of amplifier performance constraints are selected from a group consisting of: an input gain; an output gain; a noise limit; an input stability limit; and an output stability limit. ### Claim 3 (depends on 1) The computer readable storage medium of claim 1, further comprising the step of generating an input and an output disk using the load reflectances SL and generator reflectances SG that met the amplifier performance constraints. ### Claim 4 (depends on 3) The computer readable storage medium of claim 3, further comprising the step of determining a radius of the input and output disks that met the amplifier performance constraints. ### Claim 5 (depends on 4) The computer readable storage medium of claim 4, further comprising the step of optimizing the input and output disks by determining a maximum radius of each disk. ### Claim 6 (depends on 3) The computer readable storage medium of claim 3, further comprising the step of performing a Cayley Transform on the input disk. ### Claim 7 (depends on 6) The computer readable storage medium of claim 6, further comprising the step of generating eigenvalues of a Nehari matrix. ### Claim 8 (depends on 7) The computer readable storage medium of claim 7, further comprising the step of verifying the amplifier performance constraints are met if the eigenvalues are positive. ### Claim 9 A computer program product for determining an amplifier performance, the computer program product embodied on one or more computer-usable storage media and comprising: a program module for allowing the input of a number of amplifier performance constraints; a program module for conducting a search for an input and an output disk that satisfy the amplifier performance constraints; a program module for generating a vector index comprising a load reflectance SL and a generator reflectance SG at a plurality of radio frequencies; a program module for inputting the amplifier performance constraints into the vector index; and a program module for determining which load reflectances SL and generator reflectances SG meet the amplifier performance constraints. ### Claim 10 (depends on 9) The computer program product of claim 9, wherein the number of amplifier performance constraints are selected from a group consisting of: an input gain; an output gain; a noise limit; an input stability limit; and an output stability limit. ### Claim 11 (depends on 9) The computer program product of claim 9, further comprising a program module for generating an input and an output disk using the load reflectances SL and generator reflectances SG that met the amplifier performance constraints. ### Claim 12 (depends on 11) The computer program product of claim 11, further comprising a program module for determining a radius of the input and output disks that met the amplifier performance constraints. ### Claim 13 (depends on 12) The computer program product of claim 12, further comprising a program module for optimizing the input and output disks by determining a maximum radius of each disk. ### Claim 14 (depends on 11) The computer program product of claim 11, further comprising a program module for performing a Cayley Transform on the input disk. ### Claim 15 (depends on 14) The computer program product of claim 14, further comprising a program module for generating eigenvalues of a Nehari matrix. ### Claim 16 (depends on 15) The computer program product of claim 15, further comprising a program module for verifying the amplifier performance constraints are met if the eigenvalues are positive.