Anritsu MA2444A Power Sensor, High Accuracy Diode, 10 MHz to 40 GHz

The Anritsu MA2444A is a high-accuracy diode power sensor engineered for precise RF power measurements from 10 MHz to 40 GHz. Designed for integration with Anritsu ML2430A Series Power Meters, this sensor delivers measurement stability across an 87 dB dynamic range, operating reliably down to -70 dBm. An internal matching circuit optimizes return loss performance, while embedded EEPROM calibration data enables automatic frequency, power, and temperature correction by the host power meter.

Technical Specifications

• Frequency Range: 10 MHz to 40 GHz


• Power Range: -67 dBm to +20 dBm


• Dynamic Range: 87 dB


• Sensor Linearity: 1.8% (to 18 GHz); 2.5% (to 40 GHz)


• Temperature Accuracy (5°C to 50°C): < 1.0%


• Rise Time: < 4 µs


• Fall Time: < 10 µs (typical)


• Maximum Average Input Power: 200 mW (+23 dBm)


• Maximum Peak Input Power: 1 W (+30 dBm) at 1 µs pulse duration


• DC Voltage Maximum: ±10.0 VDC


• RF Connector: K(m)


• Dimensions: 73 mm × 52 mm × 29 mm


• Weight: 2 lb


• Housing Material: Brass


• Color: Grey


• IP Protection Class: IP68

Key Features

• Internal EEPROM stores calibration data for automatic interpolation and correction across frequency, power, and temperature ranges


• Enhanced matching circuit improves return loss performance


• Broad dynamic range enables measurement of low-level signals with high stability


• Fast response time with <4 µs rise time

Typical Applications

• Laboratory RF and microwave power measurement


• High-frequency system characterization


• Signal source verification across ka-band frequencies

Compatibility & Integration Primary compatibility with Anritsu ML2430A Series Power Meters. Also compatible with Anritsu MA2400A/B Series Power Meters.