An application note describing setups and considerations for generating and analyzing wideband digitally‑modulated signals in the mm‑wave range using Rohde…
This application note explains how to generate and analyze wideband digitally‑modulated signals in the mm‑wave band (V‑band and above) using Rohde & Schwarz signal generators, frequency multipliers, harmonic mixers and spectrum analyzers. Two test setups are presented, along with measurement results that illustrate performance in terms of error vector magnitude (EVM) and adjacent channel power (ACLR).\n\nThe note also discusses practical issues such as spurious generation from multipliers and mixers, and provides recommended component specifications (high‑pass and band‑pass filters, biased mixers, amplifiers) for V‑band applications. Ordering information for the referenced instruments is included.
| R&S SMF Frequency Range | 1 GHz to 22 GHz |
|---|---|
| R&S FSW67 Frequency Range | 2 Hz to 67 GHz |
| R&S AFQ100B Waveform Memory | 256 Msample |
The recommended V‑band high‑pass filter should have a pass band of ≥ 57 GHz, pass‑band attenuation < 1 dB, stop‑band below 53 GHz, and stop‑band rejection > 40 dB.