GTEM Calculator
ETS‑Lindgren’s GTEM! Calculator provides a clear, authoritative reference for estimating the forward power required to generate a specified electric field within a GTEM! test cell. Using established electromagnetic relationships and GTEM geometry, it calculates approximate power levels to support test planning, system configuration, and equipment selection.
| Model | Septum Height (mm) |
max VSWR | Max Input Power (CW) | CW Forward Power - Required (W) | 80% AM fwd pwr Required (W) |
|---|---|---|---|---|---|
| 5402 | 250 | 1.5 : 1 | 50 W | ||
| 5405 | 500 | 1.5 : 1 | 250/400 W* | ||
| 5407 | 700 | 1.5 : 1 | 200/500 W* | ||
| 5411 | 1100 | 1.5 : 1 | 1000 W |
*Requires optional blower
Please note: Only good for rough estimates. Cable loss is not included. The calculation is based on quasi-static equations. Individual GTEM variation is not considered.