MICROWAVE INTERACTIVE DISTRIBUTED INFORMATION SYSTEM "MIDIS-KOR"

The proposed microwave interactive distributed information system contains a base station, at least one subscriber station, and a reverse communication channel. The reverse communication channel contains a sector antenna, a receiver, a converter for the output signal of the receiver, a distribution unit, and demodulators. The output of the converter is connected to the input of the distribution unit. The outputs of the distribution unit are connected to the inputs of the corresponding demodulators via directed couplers, which are installed for the purpose to simplify the adjustment and operation of the system. The directivity factor of each directional coupler is determined by the following equation: ?K = 10lg[kn-1/(k - 1)n-1], where ?K is the parameter that characterizes the irregularity of the gain-frequency characteristic of the coupler, k is the directivity factor, and n is the number of the couplers.