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Communications, Radar & Electronic Warfare (201.. - Index of

Communications, Radar & Electronic Warfare (201.. - Index of

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] 8COmmUlllCatlOns, <strong>Radar</strong> and <strong>Electronic</strong> <strong>Warfare</strong>Table 1.4Genenc link budget exampleSystem element Sample value Typical unitsTransmitter side componentsTransmItter output powerFeeder los5esConnector lossesAntenna gamERP or EIRpa50 W, dBW, dBm3 dB1.5 dB4 dBi or dBd49.5 dBior dEdReceiver side componentsAntenna GainFeeder los5eConnector losses1.5 dBi or dBdReceiver sensitivity " -100 dBm, f.!V, dBf.!VMinimum required input signal'Maximum tolerable loss d -9821.5147.5"EIRP is calculated in this example based on the output power, losses and antenna gain.b Sensitivity is expressed for a given value <strong>of</strong> performance for system output, e.g. 12 dB SINAD.(This is the energy that must be present at the receiving antenna in order to supply the receiver input.d This is the maximum transmission loss between the antennas that will allow the minimum required inputsignal at the receiver. This must include all propagation effects.dBidBSignalstrength_"'-_--=1 d! I)Figure 1.9Linear diagram <strong>of</strong> system losses, with an example calculation.

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