A Novel Crossover Design Based on Parallel Coupled Lines Structure

Abstract

The theme of this paper is present a simple design of crossover based on parallel coupled lines structure. The coupling between two parallel coupled lines has been used to diver the signal to the coupled port. Theoretical and numerical simulations have been verified by full wave electromagnetic simulations. A crossover operating at 2.5 GHz has been simulated on Roger’s 5880 material with a dielectric constant of 2.2 with a substrate height of 0.508 mm. These simulations are in good agreement with the numerical simulations. A comparison has been made with the crossover of same dimensions by replacing the parallel coupled lines structure with a high impedance transmission line. From the numerical and full wave simulations, it is observed that the crossover with parallel coupled lines structure is providing better results in terms of return loss, isolation, coupling and directivity.