Double-sided printed arrays with large bandwidth

摘要

A feeding technique for double-sided printed dipoles enabling the realisation of flat arrays on foam-like substrates with bandwidths up to 25% is presented. An experimental comparison with thin single-layer microstrip arrays shows that the available gains are equal, while the bandwidths for the double-sided dipole are much larger. A modification of microstrip analysis provides useful design data for the double-sided elements.