Patent ID: 8878575

Claim:
A frequency multiplier, comprising: a source configured to generate an input electrical signal at an input frequency F 0 and amplitude; a noise reduction filter (NRF) configured with a pass band to pass the input electrical signal at the input frequency and a rejection band to reject a band of low frequency 1/f noise below the input frequency where f is frequency, said NRF's rejection band configured to provide at least 10 dB of rejection where the 1/f noise equals a wide band noise floor; a non-linear transmission line (NLTL) configured to time delay the input electrical signal as a function of amplitude to generate a plurality of electrical signals at integer multiples of the input frequency, wherein said NRF reduces phase noise in both a main lobe and a side lobe of each said frequency-multiplied electrical signal; a band pass filter (BPF) configured with a pass band to pass the main lobe of one of the plurality of electrical signals at a particular integer multiple N of the input frequency as a frequency-multiplied electrical signal and side bands to reject the side lobe of the passed electrical signal and the main and side lobes of all other multiples of the input frequency, wherein the width of the pass band is at least 2 percent of N*F 0 ; and an amplifier configured to amplify the frequency-multiplied electrical signal.