Existence of isolated periodic waves of a family of PDEs with cubic reaction term

In this paper we study the isolated periodic traveling wave solutions of a family of reaction-convection-diffusion equations with cubic reaction term. Existence/nonexistence of periodic traveling wave solutions are discussed in different parametric ranges. The monotonicity of the ratio of Abelian integrals is used to prove the existence of at most one limit cycle. Finally, numerical study is presented at the end.