DEVICE WHICH ADDS SIGNALS OF DIFFERENT FREQUENCIES Russian patent published in 1997 - IPC

FIELD: radio engineering. SUBSTANCE: device provides possibility for two TV transmitters to operate with shared antenna feeder simultaneously in different frequency channels. Corresponding device has two bridges which are connected by connection lines of different electric length, and dummy load. Short piece of connection line is connected to line pieces. Electric length of pieces and space between them are described by equation given in invention specification. EFFECT: increased functional capabilities. 2 cl, 2 dwg