Patent ID: 9172297
Filing Date: 2015-10-27
Classification: H02M,H03B

Abstract:
1. A frequency multiplier, comprising: a first stepped-impedance transmission line configured to receive a first signal of a first differential signal at a first input end; a second stepped-impedance transmission line configured to receive a second signal of the first differential signal at a second input end, wherein the first stepped-impedance transmission line and the second stepped-impedance transmission line superpose the first signal of the first differential signal on the second signal of the first differential signal to obtain a first frequency multiplied signal at an output end, a frequency of the first frequency multiplied signal is 2*N times a frequency of the first differential signal, and N is an integer greater than or equal to 1; a first inverse stepped-impedance transmission line configured to be inversely ground-coupled with the first stepped-impedance transmission line and grounded at an end near an output end of the first stepped-impedance transmission line; and a second inverse stepped-impedance transmission line configured to be inversely ground-coupled with the second stepped-impedance transmission line and grounded at an end near an output end of the second stepped-impedance transmission line, wherein the first stepped-impedance transmission line and the first inverse stepped-impedance transmission line are in parallel, and wherein the second stepped-impedance transmission line and the second inverse stepped-impedance transmission line are in parallel, so that when a signal is transmitted in the first stepped-impedance transmission line and the second stepped-impedance transmission line, a corresponding resonance signal is generated in the first inverse stepped-impedance transmission line and the second inverse stepped-impedance transmission line; and wherein another end of the first inverse stepped-impedance transmission line and another end of the second inverse stepped-impedance transmission line superpose signals to output a second frequency multiplied signal, a frequency of the second frequency multiplied signal is 2*N times the frequency of the first differential signal, and the first frequency multiplied signal and the second frequency multiplied signal are second differential signals.