Fig. 1. Model of a staggered grating slow-wave structure

Fig. 2. Frequency converges with the number of spatial harmonic truncation terms (a) phase=180°, (b) phase=360°

Fig. 3. Comparison of theoretical and simulated dispersion curves

Fig. 4. The ratio of phase speed and speed of light

Fig. 5. Coupling impedance of first harmonic

Fig. 6. Distribution of coupling impedance in beam tunnel region

Fig. 7. Comparison of theoretical and simulation results

Fig. 8. Loss of different parts of the SWS

Fig. 9. Dispersion change with the variety of staggered distance (a) r=0, (b) r=p/4, (c) r=p/2

Fig. 10. Change of the stop band frequency with the variety of staggered distance