CST – Computer Simulation Technology

Dual-Director Dipole-fed Short Backfire

Image of the Dual-director dipole-fed short backfire Image of the Dual-director dipole-fed short backfire

The short backfire antenna was first reported by Ehrenspeck in 1965. The basic short-backfire antenna consists of two planar reflectors of different diameters separated by one-half wavelength forming a leaky cavity resonator with radiation normal to the smaller reflector. This antenna is the modified version where the flat disc has been changed into a shallow cone with outer rim; and where an additional director disc has been added.

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