Satellite Communications

Recent Answers

2013-05-13 Satellite Communications - hpa linearizer:

Hi Manoj,    A linearized HPA has some correction performed on the transfert curves.  This makes it more linear closer to saturation.  The end goal is to be able to drive the HPA further into saturation

2013-05-07 Satellite Communications - FGM/ALC mode of transparent transponder:

Hi Atif,    For the effect of the SFD:    1- C/N_up = G/T + 10.log(l²/4pi) + SFD - k (where G/T  is the figure of merit of the transponder, l = wavelength, SFD = saturated flux density, k = Boltzmann's

2013-05-07 Satellite Communications - Ku band transponder characteristics:

Hi Salim,    Thanks for your interesting question.    The SFD (or gain) of a transponder can indeed be adjusted by the satellite operators within a certain extend in order to accommodate different applications

2013-04-20 Satellite Communications - Relations of ALC Output Power, C/N and C/N Margin:

Hi Sam,    Thanks for this question.    In a satellite link, the resulting C/N is the combination of the uplink C/N and the downlink C/N.    Now in case of uplink fading and the resulting increase in gain

2013-04-12 Satellite Communications - Output power from BUC:

Hi Mujtaba,    The small signal gain is something that can be found on the datasheets.  The actual gain will also depend on the attenuation that is set (if possible) on the input signal.  Alternatively