Patent ID: 7711510

Claim:
A method for adjusting a phase relationship between signals from multiple frequency bands that are being summed to reduce potential destructive interference therebetween, comprising the steps of: identifying a crossover region corresponding to a frequency range in which a lower frequency content signal overlaps with a higher frequency content signal; determining a magnitude difference between a magnitude of the lower frequency content signal and a magnitude of the higher frequency content signal in the crossover region, a small magnitude difference being indicative of a possibility of excessive destructive interference between the signals; comparing the determined magnitude difference to a predetermined threshold to determine whether the determined magnitude difference is less than the predetermined threshold; if it is determined that the determined magnitude difference is less than the predetermined threshold, determining a phase difference in the crossover region between the signals and adjusting a phase of one of the signals so that the phase difference between the signals is reduced, thereby reducing the possibility of excessive destructive interference between the signals; and combining the adjusted signal with the other of the signals, thereby producing a composite frequency content having a substantially reduced crossover region phase error, and a substantially reduced likelihood of destructive interference between the signals.