We present the design of broadband excitation and inversion pulses by method of multiple rotating frame technique.

We engineer a multiply modulated rf-field, whose effect can be understood by progressing into multiple frames.

Experimental demonstration is presented on ¹H excitation over a bandwidth of 52 kHz with a rms amplitude of 10 kHz.

Experimental spectra obtained from 100% ¹³C labeled arginine shows uniform excitation over the entire carbon spectra.