There are many approaches to pricing. These include cost-based, going-rate, target profit, cost-plus, and break-even approaches. When you think about it, all of these approaches to pricing a product ...

Abstract: This letter presents a novel dual-focusing phase synthesis method aimed at achieving high-gain beam control using caustic Bessel-like beams. Compared to conventional geometric optics methods ...

Abstract: A dual-band ultra-wide beam quadrifilar helical antenna (QHA) for satellite positioning is proposed. The branching method is used to realize the dual-band operation of the QHA. A section of ...