FIELD: radio engineering and communication.
SUBSTANCE: invention relates to radio communication and can be used in decameter range radio receivers. M-channel frequency-selective device has common bus (1) and an input potential terminal (2), as well as a frequency-selective system comprising M channels (1k…3k). Each channel has separate output (terminals 4 and 5). All channels by input (terminals 6 and 7) are connected in series. Each channel comprises an input tunable band-pass filter formed by elements 8, 9, 13, 14 and an input circuit of the differential amplifier, and having coupling coil (10), and an output tunable band-pass filter formed by elements 16, 17, 18, 19 and the output circuit of differential amplifier (15) and having coupling coil (20).
EFFECT: wider range of equipment in the field of frequency-selective systems.
1 cl, 4 dwg
| Title | Year | Author | Number |
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| LOW-PASS ACTIVE FILTER | 2016 |
|
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