Isotropic electric field probe - 30 MHz to 90 GHz: WPF90 | Wavecontrol

The WPF90 is a wideband isotropic electric field probe designed for RF exposure assessment from 30 MHz to 90 GHz. It provides True RMS electric field measurement for applications requiring reliable evaluation of electromagnetic field levels across telecom, industrial, defence and laboratory environments.

With its isotropic sensor design, RMS diode technology and flat frequency response, the WPF90 is suitable for measurements performed in accordance with international standards. It is compatible with SMP2, SMP3, MonitEM, MonitEM-Lab and MapEM platforms.

Benefits

• Very wide frequency coverage: measurement from 30 MHz up to 90 GHz for RF and high-frequency exposure assessment.
• Isotropic measurement: three-dimensional electric field evaluation without requiring antenna orientation.
• True RMS measurement: suitable for accurate assessment of complex RF environments.
• Excellent 50/60 Hz rejection: attenuation greater than 40 dB to reduce low-frequency interference during RF measurements.
• High field capability: CW measurement range from 1.2 to 1000 V/m, with a damage level of 1200 V/m.
• ISO 17025 calibration: supplied with accredited calibration under ILAC recognition.
• Lightweight probe: 95 g probe weight for practical field and laboratory operation.

Key features

• Frequency range: 30 MHz to 90 GHz.
• Measured field: electric field.
• Sensor type: isotropic RMS diode technology.
• Frequency response type: flat.
• Measurement range: 1.2 to 1000 V/m CW and 1.2 to 70 V/m RMS.
• Dynamic range: 58 dB.
• Sensitivity: 1.2 V/m.
• Linearity: ±1 dB from 2 to 250 V/m.
• Frequency response: ±3 dB from 30 MHz to 50 GHz, +1/-6 dB from 50 GHz to 60 GHz, and 0/-10 dB from 60 GHz to 90 GHz.
• Isotropic deviation: ±1 dB below 12 GHz, ±2 dB from 12 GHz to 60 GHz, and ±3.5 dB from 60 GHz to 90 GHz.
• Operating temperature range: -20 °C to 50 °C.
• Dimensions: 28.4 cm x 6 cm diameter.
• Calibration period: 24 months recommended.

Typical applications

• Telecommunications: certification and audit of telecommunication services including GSM, 3G, 4G, 5G FR1, TDT, FM and WiFi.
• Industry: assessment of industrial processes for worker RF exposure protection.
• Defence: assessment of military sites and personnel exposure protection.
• Laboratories and R&D: RF exposure protection for research, development and laboratory personnel.
• High-frequency EMF surveys: field measurements where coverage up to millimetre-wave frequency ranges is required.

Why choose WPF90

The WPF90 is designed for technical teams requiring a compact, wideband and standards-oriented electric field probe for RF exposure assessment. Its 30 MHz to 90 GHz coverage makes it particularly relevant for environments where conventional RF bands and higher-frequency technologies must be evaluated using a single probe.

Its compatibility with SMP2, SMP3, MonitEM, MonitEM-Lab and MapEM provides flexibility for both portable field measurements and monitoring workflows. The combination of isotropic True RMS measurement, high dynamic range and ISO 17025 accredited calibration supports reliable measurements for telecom audits, occupational exposure assessment and laboratory safety programs.