Analog RF over Fiber modules

Programmable 2.5GHz RF over Fiber

RFOptic’s innovative controllable RFoF product line consists of palm-size analog RFoF modules that are used to convert RF signals to optical signals to carry over long distances.

The Tx unit using an optical transmitter converts RF to the optical signal and the Rx unit converts back to the RF signal. The two units are connected through the customer’s single mode fiber.

RFOptic’s RF over Fiber (RFoF) modules are suitable for telecommunications, satellite, radio telescopes, distribution antennas, broadcasting audio and video, and timing synchronization. For example, point-to-point antennas can be connected from several meters to many kilometers away from the control room by fiber cables; Base stations can be connected through fiber to remote sector antennas; Satellite antennas can be connected through fiber cable to remote sites by RF over Fiber solutions.

Both the Tx and Rx units include LNAs and variable attenuators that enable the customer to adjust the Noise Figure, Input P1dB, and IP3 with wide dynamic range values. The LNA can be operated through the RFoF software allowing RF input power in the range of -100 dBm/1MHz for wideband applications, with a low Noise Figure of 6 dB. The RFoF link has excellent gain flatness with 0.5dB gain tracking between different links. For special applications requiring temperature stability operation, a unique algorithm supporting 0.5 dB over 1000C has been developed. The DC power of the RFoF modules is flexible from 5 to 12 Volts.

A user-friendly RFoF software enables adjustment of the RF and Optical parameters, such as link gain, Noise Figure, P1dB, Optical power, LED indication and module information, either locally or remotely.

Furthermore, the RFoF link has full diagnostic capability, including Tx, Rx, and complete link test (Optical and RF). These features save the cost of test equipment and provide real-time diagnostics of any deployed link

  • Next-generation RFoF modules with significant performance improvement.
  • Supports up to 2.5GHz.
  • Better linearity, excellent gain flatness, and Tx, Rx, and Link gain control.
  • Noise Figure down to 6 dB with LNA with MDS ~-168 dB/Hz for very low incoming signals.
  • Internal microcontroller allows RF and Optical control, enabled by software.
  • End-to-end diagnostics reduces installation and maintenance time, enabled by software.
  • Gain variation S21 (fo) of ±1 dB for 90° C variation, utilizing special algorithm.
  • Remote management by GUI installed on PC.
  • Impedances of 50 and 75 Ohm.