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for single carrier signals. Now we turn our attention to multicarrier signals particularly at mmWave where the bandwidths are two orders of magnitude (100x) higher than at sub 6GHz band. We want to investigate that whether there is any distortion in the array response due to high But let us start with the case that we have discussed so far i.e. 1GHz single carrier case and a Uniform Linear Array (ULA). We then add two other carriers at 1.2GHz and 0.80GHz, quite an extreme case, stretching the bandwidth to 400MHz. Antenna spacing is still are still OK at 800MHz where the element spacing must be less than 0.1875m. But we must clarify that the sampling theorem is given for rays would add up coherently irrespective of inter-element spacing. Below we give the simulation results and MATLAB code used to generate these results. First we consider the standard 1GHz case (with 400MHz bandwidth) and then we venture on to the more interesting case of a mmWave signal with three carriers at 37.0GHz, 38.5GHz and 40.0GHz (total bandwidth of 3.0GHz). These are not some random numbers, there is actually a mmWave frequency allocation It is seen that the departure of array response from the ideal depends upon both the bandwidth of the signal (Δf = fmax-fmin) as well as the deviation in array response in the first case there is hardly any in the second. ULA With Four Elements – Endfire Response at 1GHz ULA With Four Elements – Endfire Response at 38.5 GHz %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % SIMPLE UNIFORM LINEAR ARRAY. % WITH VARIABLE NUMBER OF ELEMENTS % MATRIX IMPLEMENTATION. % COPYRIGHT RAYMAPS (C) 2018 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% title ('Gain of a Uniform Linear Array') legend('f1=1.2GHz','f2=1.0GHz','f3=0.8GHz') signals, so we can an*lyze their responses independently. But in reality there are non-linear effects such as intermodulation effects and we need to calculate the response of the composite signal. Due to the high carrier frequencies at mmWave the high bandwidth of signals has minimal impact, so traditional beamforming techniques