Frequency doubling method and apparatus

摘要

The frequency doubling circuit according to the present invention includes first and second pulse generating circuits generating first and second pulse trains based on a periodic input signal. The second pulse train is out of phase with the first pulse train, and a combining circuit combines the first and second pulse trains to generate a periodic output signal having twice the frequency of the periodic input signal. Both the first and second pulse generating circuits include first and second charge storage devices, with the second charge storage device having half the storage capacity of the first charge storage device.