A new design for high performance HF curtain antennas

A method of optimizing high-performance high-frequency (HF) curtain antennas is presented. This optimization is based mainly on two criteria: global matching conditions at the transmitter output, i.e. the VSWR (voltage standing-wave ratio) at the input of the antenna, thus ensuring that the antenna is a correct termination to the transmitter; and, network dimensioning, expressed by the product P×S, whereby P=power in a specific radiator, S VSWR in the line feeding this radiator. This second point defines the correct distribution of power between the dipoles. Both criteria are defined by the antenna designer, mainly when he chooses the safety factor applicable at any point of the system. Sample applications of this method are given that illustrate the importance of a careful design of dipole feeding systems, and provide information about the limitations of curtain antennas and the performance which can be expected