Maximum Permissible Transmission Line Loss to Meet a Target Gain for a Corporate-Fed Uniform Rectangular Array

Very low-loss transmission lines are often required at millimetre wavelengths in order to meet performance targets. Using printed circuit board technology, extremely low-loss transmission lines are often more expensive and riskier than standard options. The ability to determine the maximum permissible transmission line loss allows designers to choose potential transmission line structures, thereby helping make this critical design choice. These results establish the maximum permissible transmission line loss in order to meet a target gain of a corporate-fed antenna array for a given the average active element gain and power divider excess loss.