ENA-X and ENA Series Vector Network Analyzers.pdf - 第12页
12 Block Diagr ams E5080B Option 240/ 260/290/2D0/2K0 ( 2 - port base options) E5080B Option 2L0/ 2M0/2N0/2P0 (2 - port bas e options)
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Modulation Distortion Analysis with Vector Signal Source
An E5081A with option 2K6/2N6/2N7/4K6/4N6/4N7 and an external modulated source (e.g., Keysight
MXG) can be combined to support both vector network analysis and modulation distortion analysis with a
single connection. RF modulation signals under 6 GHz from the external source are added to the
“Upconverter BB In” (Upconverter baseband input) port on the E5081A’s front panel, and then
upconverted with a built-in upconverter to output mmwave modulated signals at port 1 or port 2 up to
44 GHz. The S960704B (up to 20 GHz) or S960707B (up to 44 GHz) software enable users to measure
the nonlinear behavior of power amplifiers or frequency converting devices under the high-frequency,
wideband modulated stimulus conditions.
The VNA-based vector correction extends the reference planes of the signal source to the DUT’s planes.
As a result, you can achieve excellent signal fidelity resulting in accurate and repeatable modulated
distortion measurements. The system delivers faster, more accurate, and repeatable EVM and ACPR
measurements compared to conventional signal analyzers.
Modulation distortion analysis setup for amplifiers (left), and frequency converters (right)
