Array antenna apparatus
First Claim
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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.
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Abstract
According to one embodiment, an array antenna apparatus includes a distributor, transmission phase shifters, transmission amplifiers, transmission filters, transmission/reception switches, limiters, reception filters, low-noise amplifiers, reception phase shifters, a combiner, a vacuum vessel, a refrigerating unit, and a cooling plate.
9 Citations
6 Claims
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1. An active phased array antenna apparatus comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification