Mm-Wave High Sensitive Power Meters

Applications

• Measurements of the power level of mm-wave signal
• Test equipment in mm-wave labs
• R&D projects for telecom, radars and scientific equipment       

Features

• 0.01-220 GHz operating frequency
• High sensitivity
• Up to 50 dB dynamic range (0.3 µW-30 mW)
• Small measuring time (< 1 s)
• Wide choice of interfaces: Ethernet (HTTP, web interface), USB, RS-232, GPIB, SCPI protocol

Product Description

DPM-xx Power Meters display measured power in milliwatts, microwatts or dBm, and also display the user-entered signal frequency in GHz. Easy operation is ensured with automatic zeroing, automatic sensor recognition and a calculation factor table stored in the memory of each power sensor.

Their compact size, precise accuracy, reliability and inexpensive pricing make our DPM-xx Power Meters attractive assets for design engineering, equipment manufacturing, field engineering and research.

Measured average power is displayed on a 2-line LCD screen, at a measurement rate of 2 times per second or faster. For power measurements below 5-10mW (depending on frequency band) each waveguide sensor includes a full-band isolator, for 5-100mW (depending on frequency band) – a waveguide attenuator (it can include a full-band isolator on request). For power measurements above those levels (as high as 100mW-1Watt) optional directional couplers are available.

Each DPM-xx is equipped with USB and Ethernet ports (HTTP, web interface) for controlling and exchanging measurement data with a PC. RS-232 and GPIB interfaces are available as options on request.

Since the control/display unit and power sensors are sold separately, customers only need one DPM control/display unit to interface with all 10 of our sensors. To obtain power measurements over a multi-waveguide frequency range, order one DPM control/display unit and several adjacent-band sensors.  Because the standard ELVA-1 DPM control/display unit is a single-channel meter, only one power sensor can be used at one time. 

Power Meter Sensor Heads

ELVA-1’s ZBD-series Zero-Biased Detectors are used as the power sensors for our DPM Power Meters. To cover the range from 10 MHz to 220 GHz band, we offer one coaxial (10 MHz-26.5 GHz) and 9 waveguide power sensors (26.5-220 GHz in waveguide bands), which are sold separately.

Based on Schottky Barrier Diode technology, our ZBD power sensors provide high sensitivity, fast measurement speed and quick response to changes in input power. To extend the dynamic range of diode power sensors above their square law region, a correction factor is used. The amplitude and frequency curves for each individually calibrated power sensor are stored in the sensor’s EEPROM. When a sensor is connected to a DPM control/display unit, the control/display unit automatically recognizes that sensor’s characteristics.