Patent ID: 7260375

Claim:
A frequency agile sequential amplifier circuit comprising: a band pass filter operable to receive a radio frequency (RF) input signal and to generate an RF output signal, the band pass filter having a frequency range; first and second RF amplifiers, said first RF amplifier operable to receive said RF output signal from said band pass filter; a double balanced mixer operable to receive an output signal from said first RF amplifier as a first input; a delay line coupling said double balanced mixer and said second RF amplifier, said delay line having a band pass frequency range smaller than said frequency range of the band pass filter; a variable frequency pulse generator coupled to said first and second RF amplifiers and operable to generate output control signals that sequentially turn ON and OFF both said first and second RF amplifiers at a rate; and a frequency divider coupling at least one of said output control signals to said double balanced mixer as a second input and operable to sequentially switch said double balanced mixer at one-half the rate of the first and second RF amplifiers.