Unidirectional Fiber Interface Module for BDA, RF over Fiber (RFoF)

This compact unidirectional (1 way) RF over Fiber (RFoF) transmitter is designed for conversion of RF signals to optical signals carried over long distances. The Tx unit using an optical transmitter, converts RF to Optical signal and the Rx unit converts back to RF signal. The two units are connected through customer’s single mode fiber.

• Noise Figure 6 dB with LNA with MDS ~-168 dB/Hz for very low incoming signals
• Impedance of 50 Ohm and 75 Ohm
• Gain variation S21 (fo) of ±1 dB for 90° C variation
• Better linearity,
• Excellent gain flatness
• Tx, Rx and Link gain control
• Real-time diagnostic of deployed links through GUI installed on the PC

The RFoF links operate from a flexible DC power from 5 to 12 Volts.  Both the Tx and Rx units includes LNAs and variable attenuators that enable 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 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 RF and Optical parameters: link gain, noise figure, P1dB, optical power can be remotely adjusted with help of internal microcontroller that allows for RF and Optical control, either locally or remotely.