FIELD: radio engineering, communication.
SUBSTANCE: short wave transmitter harmonic filter contains the frequency-dividing device N, where N is the number of frequency bands, each of which consists of the low-pass filter and high-pass filter, and the ballast resistance. The input of each frequency-separating device connects to the harmonic filter input through the input three-terminal switch. In each frequency separating device the low-pass filter contains two inductance coils and two capacitors, the high-pass filter contains two capacitors and two inductance coils.
EFFECT: provision of the harmonic filter compliance at the input in the entire radio transmitter frequencies operating range and at the harmonic components frequencies of the transmitted signal.
1 dwg
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