Abstract: A technique for converting electromagnetic pulses to higher power amplitude and shorter duration, in binary multiples, splits an input pulse into two channels, and subjects the pulses in the two channels to a number of binary pulse compression operations. Each pulse compression operation entails combining the pulses in both input channels and selectively steering the combined power to one output channel during the leading half of the pulses and to the other output channel during the trailing half of the pulses, and then delaying the pulse in the first output channel by an amount equal to half the initial pulse duration. Apparatus for carrying out each of the binary multiplication operation preferably includes a four-port coupler (such as a 3 dB hybrid), which operates on power inputs at a pair of input ports by directing the combined power to either of a pair of output ports, depending on the relative phase of the inputs.

Abstract: A system for converting low amplitude continuous wave radio frequency energy into periodic high amplitude radio frequency, pulsed energy with a conversion efficiency approaching 100%. The invention uses radio frequency energy storage devices together with a network which separates the energy flowing towards and away from the storage devices. The phase of the input radio frequency energy is periodically changed between 0.degree. and 180.degree.. Synchronously with this phase change, the effective apertures of the storage devices (i.e. their external quality factors) are changed between two discrete values. The energy conversion efficiency is a maximum when a fixed relationship exists between the ratio of the two discrete values of the external quality factors and the ratio of the period between pulses and pulse durations.

Abstract: Peak power multiplication of a radio frequency source by simultaneous charging of two high-Q resonant microwave cavities by applying the source output through a directional coupler to the cavities and then reversing the phase of the source power to the coupler, thereby permitting the power in the cavities to simultaneously discharge through the coupler to the load in combination with power from the source to apply a peak power to the load that is a multiplication of the source peak power.