| 表达式 | A_{0}cos[omega _{c}t+kfint_{-infty }^{t}m(tau )dtau ] | A0cos[ωct+kpm(t)] |
| 瞬时相位 | omega _{c}t+kfint_{-infty }^{t}m(tau )dtau | ωct+kpm(t) |
| 瞬时相位偏移 | kfint_{-infty }^{t}m(tau )dtau | kpm(t) |
| 最大相偏 | frac{k_{f}A_{m}}{omega _{m}} | kpAm |
| 瞬时频率 | ωc+kfm(t) | omega _{c}+k_{p}frac{dm(t)}{dt} |
| 瞬时频率偏移 | kfm(t) | k_{p}frac{dm(t)}{dt} |
| 最大频偏 | kfAm | kfAmωm |