GEMINI 5540A RF Power Meter


Product Description

GEMINI™ 5540A RF Power Meter High Power, High-Accuracy RF Measurement in a Single Instrument

0.2 to 200 MHz, 3 to 5,000 W


Designed from the same dedication and expertise that built the TEGAM calorimetric instruments used in primary and production labs around the world, TEGAM’s new GEMINI 5540A RF Power Meter1 brings modern functionality and easy-to-use design to the world of in-line RF power measurement. Ideal for use in semiconductor applications where measurement uncertainty and repeatability are imperative, the GEMINI 5540A RF Power Meter is a measurement tool you can trust.

The 5540A is suitable for the most demanding applications with a 2-sigma accuracy of ±0.5% + 0.5 W across its power range. It combines the sensor and meter into one convenient instrument, allowing technicians to read forward and reverse power, VSWR, and frequency simultaneously on the large, easy-to-read OLED display.

It is powered by a standard USB 2.0 port, external battery, or AC power outlet using off-the-shelf USB adapters. And since the meter is built-in, there is less equipment – and less cables – to carry to the field or bench.

Real-time readings and data collection increase user productivity and process efficiency. Use TEGAM’s GEMINI Tools RF Power Meter Application, or write custom applications with the 5540A’s command set.

1 Patent No. 10,833,457

Ordering Information

The GEMINI 5540A is available with a variety of connector types. When ordering, please identify the desired connectors as illustrated below:

Example: 5540A-Nf-Nm (GEMINI 5540A with Type N female input, and Type N male output)

Connector Ordering Designators

Connector Ordering Designators

Power Limitations by Connector Type (power limitation values in kW)

Power Limitations by Connector Type
(power limitation values in kW) Power limited by 5540A to 5kW



Technical Specifications

  • Accuracy: ±0.5% + 0.5 W at 2σ2
  • 0.2-200MHz, at 3 to 5,000 W
  • Read forward and reverse power, VSWR, and frequency simultaneously on the integrated display
  • Insertion loss < 0.05 dB
  • USB-2 power and data interface
  • The GEMINI 5540A can be calibrated to either the input or output port, at one or more frequencies. Please contact to discuss your calibration requirements.

2 Accuracy specification valid at calibrated frequencies, from 18 to 28° C. Specifications valid only when used with the connectors in-place at time of calibration. See GEMINI 5540A Datasheet for detailed specification information.


Product Documents



Quick Starts

If you desire to have your shipment outside of North America, please contact customer service at 1-800-666-1010 or

30 Day Trial Offer

Money Back Guarantee

TEGAM stands behind our products 100%. Most TEGAM products are offered with a 30-Day unconditional Money Back Guarantee. Order a product and try it for thirty days. If you are unsatisfied for any reason, simply return the product and receive a full refund. Contact TEGAM for more details

You may also like…