Fractional order Chebyshev high pass filters have been designed in this paper for orders (1+α), (2+α) and (3+α), α representing the fractional component. The work in this paper has been done by using the nature-inspired evolutionary metaheuristic technique called particle swarm optimization. MATLAB simulations for these filters have been shown with α varying from 0.1 to 0.9 at a step of 0.1. The attenuation values are compared with the ideal values. The canonical forms of the (1+α) order filters have been realized using OTA based KHN filter. Circuit element values are calculated for orders 1.2, 1.5 and 1.8 using factional order capacitors. These capacitors are approximated as Foster 1 form.