FIELD: radio communications.
SUBSTANCE: invention relates to the field of radio communications and can be used to build a full-range digital radio relay station (DRRS) operating in frequency duplex. The transceiver module of the radio relay station consists of a transmitter, a receiver, two identical switchable filter units, and a filter interface unit. Power amplifiers and low-noise amplifiers of the lower subband and upper subband, switched with a monolithic switch, are built into the final stages of the transmitter and receiver. The receiver low-noise amplifiers and the transmitter power amplifiers are connected to the corresponding switchable filter units, which are connected to each other by a coaxial cable, are made identical and include four letter filters switched by pin-diode switches. Switchable filter units are connected to an interface unit consisting of a circulator and a power detector and having a connector for connecting to an antenna.
EFFECT: increase in the number of frequency combinations of reception/transmission.
1 cl, 2 dwg
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Authors
Dates
2022-03-24—Published
2021-09-06—Filed