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Active Devices Inc.

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  • Compact – it is small in size as compared to imported
  • Low Power consumption
  • Integrated non-linearity correction
  • Distributed computation through RS 485 interface, If
    required multiple sensors may be daisy chained by
    using a hub

This High Power (500 W) Directional RF Power Sensor with dual channels is a thru line coupler and sensor with built-in digital conversion and scaling of data. The converted data is represented in direct milli-dBm unit and is communicated on standard RS422/485 interface. It is compact in size, accurate, cost efficient. It does not need any meter to monitor RF power. Optionally it can be interfaced to a normal computer.

For High Power Radio Frequency (RF) systems, Power Monitoring and Sampling, at different junctions is a necessary process for system commissioning, fault debugging and health monitoring. This task is accomplished with the help of RF Directional Power Sensor. It acts as a single channel plug‐in device in the transmission line of RF systems for providing RF power in forward and reverse directions.


Type and Applications Device Type:

  • Two channel through line directional RF power Sensor
  • Coupler: Rigid coaxial main line and micro‐strip secondary line
  • Function: Thru‐line RF power measurement
  • Application: Specially suited for large channel embedded RF measurement applications
RF Performance
  • Frequency Range: 650 MHz (±5 MHz bandwidth)
  • Peak Power Handling/Withstanding: 1 kW max.
  • Calibration: Narrow band calibration on single frequency of use
  • Measurement Range: 5 W to 500 W CW and 20 W to 2 kW Pulsed
  • Forward Power measurement Accuracy: ±0.2 dB maximum in full range
  • Typical Directivity: 20 dB min
  • VSWR measurement range: 1.02:1 to 2:1
  • Insertion Loss: 0.15 dB
  • Return Loss / VSWR: 25 dB / 1.1:1
Interface Specifications
  • Interface Connections: RJ45 socket (8P8C) for data and power
  • Communication: RS485 full/half duplex
  • Sampling Rate: ≥ 2 readings per second
  • Serial Settings: 28800 baud rate, even parity, 8 bit data, single stop bit
  • Electrical Power Requirement: 9 V to 24 V DC (≤100 mA) via above interface connector
  • Daisy Chaining – If required multiple sensors may be daisy chained by using a hub.
Physical Specifications
  • RF Connectors: N‐type connectors (receptacle) for all RF ports
  • Size with RF connectors: 110 mm x 108 mm x 35 mm (L x W x H)
  • Size excluding connectors: 70 mm x 108 mm x 35 mm (L x W x H)
  • Gross Weight: ≤ 800 gm
  • Enclosure: Passivated Aluminum Enclosure
  • Operating Temperature Range : ≤ 20 °C to ≥50 °C
  • Humidity: 95% maximum (non‐condensing)
EMI Compliance EN 61326‐1‐1:2006