Distributed phased array testing device
First Claim
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1. A device for performing nearfield testing of a phased array system comprising:
- an input interface configured to receive a modulated output signal of the phased array;
a phase-locked loop circuit responsive to the received modulated output signal, the phase-locked loop circuit comprising;
a phase detector;
a filtering element;
a variable frequency oscillator, anda feedback loop, anda processor configured to;
compare an output of at least one of the phase detector and the filtering element with a predetermined phase detector response and an input frequency response of the phase-locked loop, respectively, andbased on the comparison, output at least one of a value indicative of an imparted phase shift and an imparted frequency modulation by the system.
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Abstract
A system for testing a phased array comprising a phase-locked loop circuit responsive to a received output signal of the phased array. The phase-locked loop circuit comprises a phase detector; a filtering element, a variable frequency oscillator and a feedback loop. The system is configured to output at least one of a value indicative of the output of the phase detector and a value indicative of the output of the filtering element for estimating at least one of an imparted phase shift and an imparted frequency modulation by array.
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Citations
16 Claims
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1. A device for performing nearfield testing of a phased array system comprising:
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an input interface configured to receive a modulated output signal of the phased array; a phase-locked loop circuit responsive to the received modulated output signal, the phase-locked loop circuit comprising; a phase detector; a filtering element; a variable frequency oscillator, and a feedback loop, and a processor configured to; compare an output of at least one of the phase detector and the filtering element with a predetermined phase detector response and an input frequency response of the phase-locked loop, respectively, and based on the comparison, output at least one of a value indicative of an imparted phase shift and an imparted frequency modulation by the system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of testing a phased array RADAR system comprising:
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receiving a modulated output signal from the system; demodulating the received signal through a phase-locked loop, the phase-locked loop comprising a phase detector, a filter and a variable frequency oscillator, wherein the output of the variable frequency oscillator is provided in a feedback loop to an input of the phase detector; and comparing the output of the phase detector to a predetermined phase detector response for determining the imparted phase shift on the output signal of the system. - View Dependent Claims (13, 14, 15, 16)
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Specification