Anritsu MA2424B Fast Thermal Sensor, 10MHz to 40GHz

The Anritsu MA2424B is a fast thermal sensor for broadband power measurement from 10 MHz to 40 GHz. It delivers true RMS detection of average power across any incident waveform using Seebeck thermal elements, enabling accurate measurements in RF and microwave test environments. The sensor pairs with Anritsu ML2430A Series power meters, which read calibration data stored in the sensor's internal EEPROM to automatically correct for frequency, power, and temperature effects.

Technical Specifications

• Frequency Range: 10 MHz to 40 GHz


• Sensor Type: Fast Thermal (Seebeck elements)


• RF Connector: K (male)


• Measurement Principle: True RMS detection for average power of any signal type


• Dynamic Range: Typically 50 dB


• Rise Time / Fall Time: Less than 4.0 ms


• Return Loss: Class-leading SWR performance


• Internal Calibration: EEPROM stores calibration factor and linearity correction data as a function of frequency, power, and temperature

Key Features

• True RMS thermal detection independent of signal modulation or waveform type


• Automatic calibration correction via compatible power meters using stored EEPROM data


• Fast thermal response (< 4.0 ms) compared to conventional thermal sensor technology


• Minimized mismatch uncertainty through high return loss performance


• Wide frequency coverage from microwave through millimeter-wave bands

Typical Applications

• Calibration laboratory power measurements


• Manufacturing and production testing


• Wireless communications RF validation


• Radar system characterization


• Satellite communications measurements


• Microwave device performance verification

Compatibility & Integration Designed for seamless operation with Anritsu ML2430A Series power meters. The sensor's built-in EEPROM enables automatic interpolation and correction of readings across the operating range, eliminating manual calibration adjustments and improving measurement confidence.