A spurious frequency attenuation servo, comprising: a first function generator that generates a first signal at a first frequency, wherein the first signal includes at least one spur at at least one respective spurious frequency; a first fixed filter that receives the first signal; characterized in that the spurious frequency attenuation servo further comprises: a single sideband, SSB, mixer coupled to the first fixed filter to receive an output of the first fixed filter, wherein the SSB mixer is configured to output a SSB output signal that includes the at least one spur at the at least one respective spurious frequency, the SSB output comprising one of a sum or a difference of frequencies of the output of the first filter and another signal mixed with the output of the first filter; a second fixed filter, wherein the second filter receives the SSB output signal including the at least one spur at at least one respective spurious frequency, and wherein the second fixed filter is further configured to filter the SSB output signal and output the at least one spur at the at least one respective spurious frequency; at least one spur attenuation controller, wherein the at least one spur attenuation controller is configured to accumulate error after reading an error term in the at least one spur at the at least one respective spurious frequency and to keep integrating until the error term is driven to zero; and at least one spur killer configured to remove the at least one spur at the at least one respective spurious frequency when the error term is driven to zero. a first function generator that generates a first signal at a first frequency, wherein the first signal includes at least one spur at at least one respective spurious frequency; a first fixed filter that receives the first signal; characterized in that the spurious frequency attenuation servo further comprises: a single sideband, SSB, mixer coupled to the first fixed filter to receive an output of the first fixed filter, wherein the SSB mixer is configured to output a SSB output signal that includes the at least one spur at the at least one respective spurious frequency, the SSB output comprising one of a sum or a difference of frequencies of the output of the first filter and another signal mixed with the output of the first filter; a second fixed filter, wherein the second filter receives the SSB output signal including the at least one spur at at least one respective spurious frequency, and wherein the second fixed filter is further configured to filter the SSB output signal and output the at least one spur at the at least one respective spurious frequency; at least one spur attenuation controller, wherein the at least one spur attenuation controller is configured to accumulate error after reading an error term in the at least one spur at the at least one respective spurious frequency and to keep integrating until the error term is driven to zero; and at least one spur killer configured to remove the at least one spur at the at least one respective spurious frequency when the error term is driven to zero. a single sideband, SSB, mixer coupled to the first fixed filter to receive an output of the first fixed filter, wherein the SSB mixer is configured to output a SSB output signal that includes the at least one spur at the at least one respective spurious frequency, the SSB output comprising one of a sum or a difference of frequencies of the output of the first filter and another signal mixed with the output of the first filter; a second fixed filter, wherein the second filter receives the SSB output signal including the at least one spur at at least one respective spurious frequency, and wherein the second fixed filter is further configured to filter the SSB output signal and output the at least one spur at the at least one respective spurious frequency; at least one spur attenuation controller, wherein the at least one spur attenuation controller is configured to accumulate error after reading an error term in the at least one spur at the at least one respective spurious frequency and to keep integrating until the error term is driven to zero; and at least one spur killer configured to remove the at least one spur at the at least one respective spurious frequency when the error term is driven to zero.