| 摘要 |
A radio channel comprises a transmitter including an antenna-feeder arrangement, a pre-selector, a frequency converting channel, a , a detector, a signal digitization unit, a low frequency amplification channel, a control unit comprising a quadrant transformer, a software unit, a power amplifier and an antenna switch, the input of antenna switch is connected to the antenna-feeder arrangement and power amplifier, the output – to the pre-selector; a quadrant transformer comprises two inputs and two outputs, the preselector output is connected to the first input of quadrant transformer, the first output of quadrant transformer and input of analog-to-digital converter are united, the output of digital-analog-converter is connected to the second input of quadrant transformer; the second output of quadrant transformer is connected to the power amplifier, the output of power amplifier is connected to the antenna switch. |
