Anritsu MA24004A Thermal Sensor, 10 MHz to 40 GHz

The Anritsu MA24004A is a thermal power sensor engineered for precise average power measurement across microwave and millimeter-wave frequencies from 10 MHz to 40 GHz. Using true-RMS detection via Seebeck elements, it delivers accurate readings of any incident waveform regardless of signal type. The sensor spans a dynamic range of −30 dBm to +20 dBm with typical measurement accuracy of ±0.5 dB and linearity of 2.0% across its full frequency band.

Technical Specifications

Frequency Range: 10 MHz to 40 GHz Dynamic Range: −30 dBm to +20 dBm Measurement Accuracy: ±0.5 dB (typical) Sensor Linearity: 2.0% (up to 40 GHz) VSWR: <1.90 (10–50 MHz); <1.17 (50–150 MHz); <1.10 (0.15–2 GHz); <1.15 (2–12.4 GHz); <1.20 (12.4–18 GHz); <1.25 (18–32 GHz); <1.30 (32–40 GHz) Insertion Loss: <1.5 dB (typical) Rise Time: <15 ms (0.0 dBm, room temperature with standard 1.5 m sensor cable) RF Connector: K(m)

Key Features

• True-RMS detection for average power measurement of any signal waveform


• Seebeck element technology for broadband thermal sensing


• Built-in EEPROM stores calibration factors and linearity correction data


• Flat response and low insertion loss across the 10 MHz to 40 GHz band

Typical Applications

• RF/microwave power calibration and validation


• High-frequency component testing


• Signal chain power analysis in millimeter-wave systems

Compatibility & Integration The MA24004A integrates with Anritsu ML2430, ML2480, and ML2490 series power meters. Operation requires ML2407A/08A or ML2437A/38A Power Meters with firmware revision 3.10 or higher.