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The development of a novel technique for measuring HPA (High Power Amplifiers) AM (Amplitude Modulation) and PM (Phase Modulation) noise is reported. The new method utilizes a dual channel microwave downconverter and a 16-bit high-speed digitizer to directly sample the IF allowing digital demodulation of AM and PM noise simultaneously. A prototype AM/PM noise measurement system has been built with...
Spectrum measurements are essential to RF and microwave testing, and newer analyzers deliver better performance and speed. New “signal analyzers” also add vector capabilities such as precision demodulation and time domain analysis plus wideband waveform capture and playback. With built-in measurement applications the analyzers can streamline systems by making phase noise and noise figure measurements,...
Overcoming test-equipment obsolescence is paramount in military and aerospace applications where test systems are supporting equipment with a service life of more than 20 years. However, replacing one or more obsolete instruments in a test system can have major consequences for the deployed Test Program Set (TPS). An emulation strategy can help you incorporate new test instruments to migrate from...
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