Speaker
Description
With the recent and ongoing upgrades of the VLBI INAF antennas of Medicina (Bologna) and Noto (Siracusa), together with the implementation of the Compact Tri-band Korean Receivers, all the Italian facilities, including the Sardinia Radio Telescope (SRT), are ready for performing millimeter-wave observations up to W-band (about 110 GHz). Because of the receiver bands available, around 18 GHz, wideband optical fiber connection is mandatory, where simultaneous low noise figure and high dynamic are requested, for connecting the IF receivers’ outputs to the control room. In addition, the observations at such high frequency, which can last several hours, might require the information of the delay introduced by the optical fiber, and its variation along the observation time window.
The talk/poster will therefore present the joint study on the design of the 18GHz Analog Optical Link to reach the performances requested and of a fiber transfer delay measurement system which can be integrated over the same optical fiber where the RF/IF signal is travelling.
