Applications
- Measurement of mm-wave signal power levels
- Test equipment for mm-wave laboratories
- R&D projects in telecommunications, radar, and scientific instrumentation
Features
- 0.01-220 GHz operating frequency range in 10 sub-bands
- High sensitivity
- Up to 50 dB dynamic range (0.3 µW–30 mW)
- Fast measurement time (< 1 s)
- Wide range of interfaces: Ethernet (HTTP, web interface), USB, RS-232, GPIB, SCPI protocol (some optional)
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 by automatic zeroing, automatic sensor recognition, and a calibration factor table stored in the memory of each power sensor.
Their compact size, high accuracy, reliability, and competitive pricing make DPM-xx Power Meters attractive for design engineering, equipment manufacturing, field service, and research applications. The average measured power is displayed on a touchscreen at up to 50 measurements per second.
For power measurements below 5–10 mW (depending on the frequency band), each waveguide sensor includes a full-band isolator. For 5–100 mW (depending on the frequency band), a waveguide attenuator is used (a full-band isolator can be included on request). For higher power levels (up to 100 mW–1 W), optional directional couplers are available.
Each DPM-xx unit is equipped with USB and Ethernet ports (HTTP, web interface) for control and for exchanging measurement data with a PC.
Note: RS-232 and GPIB interfaces are available as optional features on request.
Since the control/display unit and power sensors can be sold separately, customers need only 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 a 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, we offer one coaxial sensor (10 MHz–26.5 GHz) and nine waveguide power sensors (26.5–220 GHz across standard waveguide bands), which are sold separately.
Based on Schottky barrier diode technology, our ZBD power sensors deliver high sensitivity, fast measurement speed, and a rapid response to changes in input power. To extend the dynamic range of diode power sensors beyond their square-law region, a correction factor is applied. The amplitude and frequency response 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 unit automatically recognizes the sensor’s characteristics.
DPM-XX Key Specifications
- Display readings: milliWatts, microWatts or dBm
- Maximum measuring rate: up to 50 times per second, default 2 times per second (set at factory)
- Frequency Range: 10 MHz to 220 GHz
- Min. measured Power: 0.1 microwatts (depending on frequency band)
- Dynamic Measurement Range: 50 dB max. (depending on frequency band)
- Frequency step: 10 MHz
- SCPI command protocol
- Ethernet (HTTP, web interface) +USB (in the standard model), optional: GPIB+RS232
- Calibration accuracy ±0.04 dB (log) or ±1%
- Power Sensor Calibration: Individually calibrated, with amplitude and frequency curves in flash memory
- If a valid signal frequency is not entered before measuring power, the max measurement error will be ±1.5 dB for Ka, Q, U, and V bands, ±2.0 dB for E, W bands, and ±2.5 dB for F, and D bands, based on calibration curve flatness.
- Available power options: 100-240V 50/60Hz AC, or battery with USB Type-C 5V 3A output
Typical models of ELVA-1 DPM-XX series mm-wave power meters
Please scroll the table from left to right to see all columns.
| Model Number | DPM-C | DPM -28 | DPM -22 | DPM -19 | DPM -15 | DPM -12 | DPM -10 | DPM -08 | DPM -06 | DPM -05 |
| Frequency Band | – | Ka | Q | U | V | E | W | F | D | G |
| Frequency Range, GHz | 0.01-26.5 | 26.5- 40 | 33-50 | 40-60 | 50-75 | 60-90 | 75-110 | 90-140 | 110-170 | 140-220 |
Input Waveguide/ Impedance | 50 Ohm, Coaxial | WR-28 | WR-22 | WR-19 | WR-15 | WR-12 | WR-10 | WR-08 | WR-06 | WR-05 |
| Wavequide Flange/ Connector | SMA, male | UG-599/U | UG-383/U | UG-383/U-M | UG-385/U | UG-387/U | UG-387/U-M | UG-387/U-M | UG-387/U-M | UG-387/U-M |
| Max Input Power Level, dBm (*) | 15 | 5 | 5 | 5 | 5 | 8 | 9 | 9 | 9 | 10 |
| Max Measured Power Level, dBm | 14 | 4 | 4 | 4 | 4 | 7 | 8 | 8 | 8 | 9 |
| Dynamic Range, dB (max) | 45 | 47 | 47 | 47 | 47 | 50 | 49 | 49 | 48 | 44 |
| Min Measured Power Level, dBm | -31 | -43 | -43 | -43 | -43 | -43 | -41 | -41 | -40 | -35 |
| Measurement Rate (default), times per sec | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| VSWR (power sensor) | 1.4:1 | 1.4:1 | 1.4:1 | 1.4:1 | 1.4:1 | 1.4:1 | 1.4:1 | 1.4:1 | 1.4:1 | 1.7:1 |
Note (*): Exceeded power level can burn a sensor. ELVA-1 can supply an attenuator to the input, then the dynamic range will move to a higher power range.
How to order ELVA-1 DPM-XX mm-wave power meter:
Specify Model Number DPM-XX /P/UV/YZ, where
XX – number of waveguide standard (Ex. 10 for WR-10 and 06 for WR-06)
P – max input power (mW), exceeded power level can burn a sensor
UV – mains supply voltage, 110V or 240V (50/60Hz AC)
YZ – interfaces in alphabet order (G –GPIB, E – Ethernet, U – USB, R – RS-232)
DPM-XX product number examples:
DPM-10/20/110/EU (W-band power meter, WR-10, operating frequency band 75-110 GHz, max power level 20 mW, mains voltage 110V AC, Ethernet+USB)
DPM-15/10/240/GR (V-band power meter, WR-15, operating frequency band 50-75 GHz, max power level 10 mW, mains voltage 240V AC, GPIB+RS-232)
Please feel free to contact ELVA-1 for the DPM-XX mm-wave power meter price.