FIELD: radio engineering and communication.
SUBSTANCE: invention relates to radio engineering and is intended to amplify received signals in HF band. Technical result is achieved by using a bandpass filter consisting of connecting two LC-chains from the serial connection of the elements of inductance and capacitance, which allows simultaneously to filter and raise the level of the input signal, thereby achieving the possibility of reducing the gain of the integrated amplifier, and negative feedback reduces the noise level to increase the dynamic range of the selective amplifier at the input of the radio receiving device.
EFFECT: increasing the dynamic range by reducing the noise level in the high-frequency selective amplifier by increasing the level of the signal in the filter and applying feedback from the output of the amplifier to the input of the filter.
1 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BAND AMPLIFIER | 2016 |
|
RU2626553C1 |
| ACTIVE BAND RC FILTER | 1992 |
|
RU2089998C1 |
| 0 |
|
SU560320A1 | |
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|
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SU1807555A1 |
| METHOD AND ACOUSTIC THERMOMETER FOR TAKING DISTANT OBJECT TEMPERATURE MEASUREMENTS | 1992 |
|
RU2061408C1 |
