How to Improve Satellite Payload Measurements with Low-Noise RF Signals

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Pro XG7 Analog Signal Generator
+ Pro XG7 Analog Signal Generator
Pro XG7 Analog Signal Generator
+ Pro XG7 Analog Signal Generator

Reduce Source Contributions To Payload Measurements

Satellite payload RF testing requires a controlled stimulus at the frequency and level needed by the upconverter, downconverter, or other frequency-conversion stage under test. Configure the source within the applicable test frequency range, account for losses through cables, switches, and fixtures, and establish sufficient measurement margin between source impairments and the device behavior you need to observe.

Apply the RF stimulus to the conversion stage and measure the output with RF analysis instrumentation. Depending on the payload and test objective, measurements can evaluate conversion behavior, error vector magnitude (EVM), dynamic range, and unwanted responses. Consider phase noise, amplitude modulation (AM) noise, broadband noise, spurious signals, and the remaining test system when interpreting the measured result.

Low-Noise Satellite Payload RF Test Solution

Characterize satellite payload upconverters, downconverters, and other RF conversion stages with a stimulus that contributes as little as practical to the behavior you are trying to measure. The Keysight SG6311A Pro XG7 analog signal generator combines low amplitude modulation (AM) noise, phase noise, and broadband noise to reduce source-contributed impairments that can obscure device performance. This cleaner stimulus provides greater measurement visibility when evaluating error vector magnitude (EVM), dynamic range, conversion performance, and low-level unwanted responses. With frequency coverage from 9 kHz to 20 GHz and clean, calibrated output power up to +22 dBm, the SG6311A also helps you establish the required signal level at the device under test while accounting for losses in the RF test path. The result is greater confidence that you are evaluating the payload component rather than unnecessary limitations from the signal source.
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How to Improve Satellite Payload Measurements with Low-Noise RF Signals Block Diagram

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