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This paper presents the CMB angular power spectrum obtained using the CAMBcode for three different models of inflation: the Starobinsky inflationarymodel, the generalized Starobinsky inflationary model, and the chaoticinflationary model with a step. The results are compared with the most recentdata reported for the Planck mission. An analysis of the large ($l \lesssim90$), intermediate ($90 \lesssim l \lesssim 900$), and small ($l \gtrsim 900 $)angular scales is performed. We report the position of the peaks in theintermediate region so as the cosmological parameters obtained in each of themodels: age of the universe, $\Omega_m$, $\Omega_b$, $\Omega_{\Lambda}$,$\Omega_K$ and $n_S$.

Recreation of the temperature power spectrum for some inflationary models