Patent ID: 6388546
Filing Date: 2002-05-14
Classification: H01P,H03B

Abstract:
A method of frequency multiplication comprising the steps of:(a) receiving an input signal having a fundamental frequency of component f0; (b) providing an input impedance matching to said fundamental frequency component; (c) performing a plurality of n frequency doubling operations in series to derive from the input signal an output signal having an output frequency component of 2nf0, wherein each frequency doubling operation, hereby referred to as a kâ€² th doubling operation k&lsim;n, includes the steps of receiving a kâ€² th input signal having an input frequency component of 2(k-1)f0, deriving from the kâ€² th input signal a kâ€² th intermediate signal having a harmonic frequency component of 2kf0, suppressing the input frequency component of 2(k-1)f0 from the intermediate signal; and (d) providing an interstage impedance matching to the harmonic frequency component of 2kf0 between each pair of consecutive kâ€² th and (k+1)â€² th frequency doubling operations; the interstage impedance matching being provided by a transmission line having electrical parameters so set as to provide a pair of reflection coefficients on the transmission line having phases of similar values and opposite polarities, when seen in opposite directions to one another at the harmonic frequency component of 2kf0; and (e) providing an output impedance matching to the output frequency component of 2nf0.