Patent ID: 9088325
Filing Date: 2015-07-21
Classification: H01Q,H04B

Abstract:
1. An active phased array antenna apparatus comprising: a plurality of antenna elements arranged in an array pattern; a plurality of reception circuits corresponding to the respective antenna elements; a plurality of phase shifters provided correspondingly to the reception circuits and controls phase of a signal output from the reception circuits to desired phase; a vacuum vessel houses the plurality of reception circuits and insulates external heat to maintain an extremely-low temperature state; a cooling unit cools the plurality of the reception circuits in the vacuum vessel; wherein each of the reception circuits comprising: a reception filter passes a reception signal, out of signals received by the corresponding antenna elements, which falls within a desired frequency band; and a low-noise amplifier (LNA) amplifies a reception signal having passed through the reception filter with low noise; the reception filter and a connecting wire between the reception filter and the low-noise amplifier are formed with superconducting materials achieve a superconducting phase by cooling of the cooling unit; a noncontact waveguide loaded with a dielectric body is used for at least one electrical (high frequency) interface to connect an input signal and an output signal between extremely-low temperature side inside of the vacuum vessel and normal temperature side outside of the vacuum vessel; and an airtight structure of the vacuum vessel is formed with the dielectric body.