  We derive the power spectra of the scalar- and tensor-type structures
generated in a chaotic-type inflation model based on non-minimally coupled
scalar field with a self interaction. By comparing contributions of
both-structures to the anisotropy of the cosmic microwave background radiation
with the four-year COBE-DMR data on quadrupole anisotropy we derive constraints
on the ratio of self-coupling and non-minimal coupling constants, and the
expansion rate in the inflation era, Eq. (12). The requirement of successful
amount of inflation further constrains the relative amount of tensor-type
contribution, Eq. (16).
