FIELD: filters.
SUBSTANCE: group of inventions relates to a tunable filter. Disclosed is a tunable filter having a signal circuit defined between a signal input and a signal output. Plurality of circuit elements are connected in a signal circuit; multiple circuit elements comprise a frequency-tunable resonator and an adjustable scaling unit which applies a gain which is adjustable in a range comprising a positive gain and a negative gain. Controller is connected with possibility 1) to adjust resonant frequency-tuned resonator and 2) adjust the gain of the adjustable scaling unit between the negative gain and the positive gain, thereby providing a variable Q-factor independent of frequency.
EFFECT: high flexibility of adjusting characteristics of a tunable filter.
30 cl, 1 tbl, 81 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PROGRAMMABLE ARC-FILTER | 1989 |
|
RU2019904C1 |
| METHOD AND DEVICE FOR STABILIZING SEMICONDUCTOR LASER | 1996 |
|
RU2153215C1 |
| ULTRASONIC IMAGING SYSTEM PROBE, AND A SYSTEM AND A METHOD OF IMAGING | 2016 |
|
RU2734129C2 |
| TRANSCEIVER WITH FAST TUNING OF FREQUENCY FOR USE IN MULTIRANGE PORTABLE COMMUNICATION DEVICE | 2005 |
|
RU2386211C2 |
| Q-METER OF OSCILLATORY SYSTEMS | 0 |
|
SU1718144A1 |
| 0 |
|
SU314323A1 | |
| ADJUSTABLE ARC FILTER | 1995 |
|
RU2110140C1 |
| ADJUSTABLE GENERATOR WITH SERIAL AND PARALLEL ADJUSTED RESONANT CIRCUITS | 2006 |
|
RU2404505C2 |
| METHOD FOR ANALOG-TO-DIGITAL SIGNAL PROCESSING | 2022 |
|
RU2787473C1 |
| DEVICE FOR INTEGRATION OF INCOHERENT SIGNALS | 1993 |
|
RU2075801C1 |
