and thus larger signals can produce exponentially more distortion than smaller ones this creates non linear distortions or spurs preventing detection of much smaller signals of interest spurs also occur from in band intermodulation products from large out of band interferers the presence of these spurious signals and other interferers prevents full usage of the receiver spectrum for example to meet a particular sfdr requirement e g to properly demodulate a signal within specification the bandwidth of the receiver may be limited based on the existence of relatively high amplitude spurs at the edge of the band all these effects severely limit functionality of rf receivers the following difficulties arise from the inability of current communication systems to reject cancel or tolerate interference poor spectrum efficiency and wasted available spectrum leads to compromise of information capacity the number of frequency hoppers supported on a platform is limited resulting in fewer channels of secure jam resistant communication small signals of interest cannot be detected therefore low probability of intercept signaling is affected degraded signal detection and characterization permits complex signals to go undetected and results in shorter communication range dynamic frequency and bandwidth allocation schemes are very limited or not permitted leading to longer operational planning time and reduced agility in battle situations the.