Anritsu MA2445A Power Sensor, High Accuracy Diode, 10 MHz to 50 GHz

The Anritsu MA2445A is a high-accuracy diode power sensor engineered for precise average power measurements from 10 MHz to 50 GHz. Built with an internal matching circuit to minimize input SWR and improve return loss performance, it delivers reliable repeatability across demanding test environments. The sensor stores calibration data - as a function of frequency, power, and temperature - in an internal EEPROM, enabling automatic correction by compatible Anritsu power meters.

Its dynamic range spans -67 dBm to +20 dBm, with linear response from -67 dBm to +15 dBm and a maximum input power rating of +23 dBm.

Technical Specifications

• Frequency Range: 10 MHz to 50 GHz


• Dynamic Range: -67 dBm to +20 dBm


• Sensor Linearity: -67 dBm to +15 dBm


• Maximum Input Power: +23 dBm


• Measurement Type: Average power

Key Features

• Internal matching circuit reduces input SWR and return loss


• On-board EEPROM stores calibration data across frequency, power, and temperature


• Automatic power meter correction via frequency and temperature interpolation


• Supports CW and narrow fast rising-edge pulse measurements (radar applications)


• RF connectors compatible with the MA24xx series frequency range specifications

Typical Applications

• Communications system testing


• Amplifier characterization and gain verification


• Component power validation


• Radar pulse power measurement


• CW power measurement and monitoring

Compatibility & Integration The MA2445A integrates with Anritsu power meters including the ML2430A, ML2480, ML2490, and ML2400A series. Firmware revision 3.10 or higher is recommended for ML2400A/ML2430A meters when paired with MA24xxD and MA2400xA series sensors. PC software control via USB 2.0 enables integration into automated test systems and peak power analysis workflows.