Abstract: An imaging receiver includes a low noise amplifier (LNA) module to receive and amplify the radio-frequency (RF) input signal; one or more switches configured to selectively pass RF input to one or more of the power detector circuits; one or more power detector circuits coupled to the switches to generate output voltages proportional to associated powers at their input ports; one or more reference circuits to provide reference signals to the switches; and one or more integrator circuits to integrate the output voltages of the power detector circuits.

Abstract: A phased array receiver having beam-forming capability, with M inputs and N outputs, includes M radio-frequency (RF) front-ends, each comprising an RF amplifier; and a beam-forming network, with M input ports and N output ports, each coupled to at least one of the other ports through an electrical network, and wherein a signal at each port has a predetermined phase or delay relative to the signals at the other ports, and wherein M is smaller than or equal to N.