Passive repeater using double flat reflectors

A means to transmit microwave signals over a mountain by using double reflectors is reported. It consists of two large, flat, rectangular conducting sheets nearly parallel to each other with an angle of 45° or more between the microwave beam and the reflector surface. The propagation loss through this passive repeater is given. Analysis of a typical 7-KMC system shows that this scheme is practical. Its advantages over other existing systems are discussed.