Anritsu MA2423B Fast Thermal Sensor, 10MHz to 32GHz

The Anritsu MA2423B is a broadband thermal power sensor delivering true average power measurement across 10 MHz to 32 GHz. It employs Seebeck elements to generate output voltage proportional to incident waveform power, independent of signal modulation or waveform shape. An internal EEPROM stores calibration factors and linearity correction data indexed by frequency, power, and temperature, enabling automatic reading correction when paired with compatible Anritsu power meters.

Technical Specifications

• Frequency Range: 10 MHz to 32 GHz


• Sensor Type: Thermal (Seebeck element)


• Dynamic Range: 50 dB


• Rise/Fall Time: Less than 4.0 ms


• True-RMS Detection: Measures average power of any incident waveform


• SWR: Class-leading performance


• Calibration Data: Internal EEPROM with frequency, power, and temperature-dependent correction factors

Key Features

• Broadband operation across microwave and millimeter-wave bands eliminates need for multiple sensors


• Thermal detection principle ensures accurate measurement of CW, modulated, and pulsed signals


• Fast response time (< 4.0 ms rise/fall) supports dynamic power monitoring in production environments


• Factory calibration stored on-device; power meter interpolates readings automatically across frequency and power ranges


• Output voltage directly translates to power via compatible meter interpretation

Typical Applications

• Production power verification and acceptance testing


• R&D broadband power characterization


• High-frequency amplifier output measurement


• Signal source validation across 10 MHz to 32 GHz band

Compatibility & Integration The MA2423B integrates with Anritsu ML2430A Series Power Meters, which read and interpret sensor output voltage using stored calibration data. The internal EEPROM eliminates manual calibration entry and allows meters to apply frequency and temperature corrections automatically.