Apparatus and methods for radar imaging based on injected push-push oscillators

摘要

The present invention relates to a radar imaging apparatus comprising: a reference signal generator comprising a quartz oscillator and at least one level of first push-push oscillators cascaded with the quartz oscillator; a phased array antenna including at least one transmitter/receiver module comprising at least one level of second push-push oscillators; and a radiating apparatus cascaded with the reference signal generator and with at least one transmitter/receiver module, wherein each second push-push oscillator is configured to receive an injecting RF signal and to multiply its frequency by a factor of 2*N, where N is an integer, thereby changing the phase of the injecting RF signal.