Anritsu MA2445D High Accuracy Sensor, 10MHz – 50GHz

The Anritsu MA2445D is a high-accuracy diode power sensor engineered for precise power measurements across 10 MHz to 50 GHz. It delivers an 87 dB dynamic range and 3.5% linearity across the full frequency span, making it suitable for both CW and TDMA measurement applications. The sensor integrates a built-in 3 dB attenuator to minimize input VSWR and stores calibration factors in EEPROM for automatic interpolation by compatible power meters.

Technical Specifications

• Frequency Range: 10 MHz to 50 GHz


• Power Range: −67 dBm to +20 dBm


• Dynamic Range: 87 dB


• Sensor Linearity: 3.5% from −67 dBm to +15 dBm; additional 1% accuracy above +15 dBm


• Rise Time: <0.004 ms (4 µs)


• RF Connector: V(m) with precision coupling nut for torque wrench attachment


• Internal Attenuator: 3 dB built-in attenuation

SWR Performance by Frequency Band

• <1.90 at 10–50 MHz


• <1.17 at 50–150 MHz


• <1.08 at 0.15–2 GHz


• <1.16 at 2–12.4 GHz


• <1.21 at 12.4–18 GHz


• <1.29 at 18–32 GHz


• <1.44 at 32–40 GHz


• <1.50 at 40–50 GHz

Key Features

• High-accuracy diode sensor design optimized for low measurement uncertainty across 87 dB dynamic range


• Sub-microsecond rise time (4 µs) enables rapid settling for time-domain measurements


• EEPROM-based calibration with automatic meter compensation eliminates manual correction overhead


• Low VSWR achieved through precision V(m) connectors and integrated attenuator network


• Specified linearity allows confident amplifier characterization from near-noise floor to high-power regimes

Typical Applications

• Amplifier output power characterization and gain measurement


• CW average power measurement across microwave and millimeter-wave frequencies


• TDMA signal power assessment in mobile communications bands


• High-dynamic-range power monitoring in component and system validation

Compatibility & Integration Designed for direct integration with Anritsu ML2430, ML2480, and ML2490 series power meters. EEPROM storage enables automatic calibration data retrieval, eliminating manual lookup procedures.