International Journal of Microwave Science and Technology / 2015 / Article / Fig 1

Research Article

Implementation of a Cross-Spectrum FFT Analyzer for a Phase-Noise Test System in a Low-Cost FPGA

Figure 1

Block diagram of the quadrature method. The reference oscillator (REF) is phase-locked to the device under test (DUT). The output of the phase detector (mixer) is first amplified with a low noise amplifier and then measured with a baseband spectrum analyzer.

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