  We propose a single field inflationary model by generalizing the inverse
power law potential from the intermediate model. We study the implication of
our model on the primordial anisotropy of cosmological microwave background
radiation. Specifically, we apply the slow-roll approximation to calculate the
scalar spectral tilt $n_s$ and the tensor-to-scalar ratio $r$. The results are
compared with the recent data measured by the Planck satellite. We found that
by choosing proper values for the parameters, our model can well describe the
Planck data.
