Anritsu MA24005A Thermal Sensor, 10MHz to 50GHz

The Anritsu MA24005A is a thermal power sensor that measures average power across 10 MHz to 50 GHz with ±30 dBm to +20 dBm dynamic range. Built on Seebeck element technology, it converts thermal gradients into precise power readings independent of waveform type. The sensor integrates EEPROM-stored calibration factors and linearity correction data for consistent accuracy across temperature and signal conditions.

True-RMS detection enables accurate measurements of modulated and complex signals. Sensor linearity reaches 2.5% across the full frequency band. Temperature-compensated accuracy delivers <1% below 30 GHz and <1.5% at or above 30 GHz for power levels to +10 dBm.

Rise time is <15 ms, supporting rapid power transient capture. SWR performance varies by band: <1.90 (10–50 MHz), <1.17 (50–150 MHz), <1.10 (150 MHz–2 GHz), <1.15 (2–12.4 GHz), <1.20 (12.4–18 GHz), <1.25 (18–32 GHz), <1.30 (32–40 GHz), and <1.40 (40–50 GHz). All calibration is NIST traceable, ensuring traceability to primary standards.

Technical Specifications

• Frequency Range: 10 MHz to 50 GHz


• Power Range: –30 dBm to +20 dBm


• Sensor Linearity: 2.5% (frequencies < 50 GHz)


• Measurement Accuracy: <1% below 30 GHz, <1.5% at/above 30 GHz (to +10 dBm)


• Rise Time: <15 ms


• RF Connector: V(m) precision type with hexagon coupling nut


• Calibration: NIST traceable


• True-RMS Detection: Yes


• Built-in EEPROM: Calibration factors and linearity correction data

Key Features

• Seebeck-element thermal detection for waveform-independent average power measurement


• Frequency-dependent SWR specification optimized across X-, Ku-, K-, and Ka-band


• Low rise time for transient power monitoring


• Integrated thermal compensation across extended temperature range

Typical Applications

• Microwave component and subsystem power verification


• CW and modulated signal average power measurement


• Broadband and multicarrier signal characterization


• Manufacturing test and quality assurance

Compatibility & Integration Compatible with Anritsu ML2430, ML2480, and ML2490 series power meters. ML2407A/08A and ML2437A/38A power meters require firmware revision 3.10 or higher when paired with MA24xxD and MA2400xA series sensors.