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Active TRP

Total Radiated Power workflow for an active (transmitting) DUT.

Active 2D azimuth cuts

What you need

  • A WTL .txt file with H/V power per ($\theta$, $\phi$) cell
  • The DUT's conducted power in dBm (to compute efficiency)
  • Optional: cable loss in dB

In the GUI

  1. Scan type: Active
  2. Set Conducted Power (dBm): defaults to 4 dBm; this is the level at the DUT antenna input, not at the source
  3. Set Cable Loss (dB) if applicable: added back to measured power
  4. Ctrl+O and pick the active-TRP file
  5. Plots render: 2D azimuth/elevation cuts, 3D pattern with turbo colormap, datasheet-style summary

What you get

Metric Where it appears
TRP_dBm Status bar + DOCX summary table
H-TRP / V-TRP Polarization-split TRP
Total efficiency TRP / conducted power (linear), expressed in %
Max / min / avg gain Sin-weighted spherical statistics
3D radiation pattern turbo colormap, DUT orientation triad (X=green, Y=red, Z=blue)
Maritime stats (if enabled) Horizon-band gain, maritime power fraction

Math

RFlect's TRP uses the CTIA / IEEE-149 discrete solid-angle form with the $\sin\theta$ Jacobian, on EIRP-per-angle chamber samples:

$$\text{TRP} = \frac{1}{4\pi} \int_0^{2\pi}!\int_0^{\pi} P(\theta,\phi)\,\sin\theta\,d\theta\,d\phi$$

Golden-reference tests lock the isotropic oracle (constant EIRP integrates back to itself). That is a calculation check, not laboratory accreditation or a certified chamber report.

Batch / MCP

Process every TRP file in a folder:

process_folder("/path/to/trp_runs", intent="active", report=True)

This runs batch_process_active_scans over the folder and (optionally) generates a DOCX report. See Recipes.

Common gotchas

  • Conducted power matters. Efficiency is wrong if you enter the source-side power instead of the DUT-side power.
  • Cable loss is positive. Loss is what the signal loses between DUT and receiver: add it back to compensate.
  • TRP at a single frequency only. If you need TRP vs frequency, use multiple active scans.

See also