AbstractAn expression is derived that gives the output fundamental and intermodulation product magnitudes for an ideal hard limiter, for the case ofninput signals plus Gaussian noise. The expression is derived by building upon previous work by Shimbo4to account for the Gaussian noise input. The expression is implemented in a computational tool. Results are generated and are compared with data generated by Jain5for three‐signal suppression, and by Blachman11for the functional relationship between the output and input SNR for a bandpass limiter. In all cases, the data generated agree extremely well with published result