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Class Information
Number: 333/215
Name: Wave transmission lines and networks > Negative resistance or reactance networks of the active type > Simulating specific type of reactance > Using gyrator
Description: Subject matter employing a nonreciprocal circuit of the type that produces at one point the positive inversion of the impedance at a second point (i.e., a positive impedance inverter).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7522023 |
Gyrator with feedback resistors |
Apr. 21, 2009 |
| 7512389 |
Active inductors using bipolar silicon transistors |
Mar. 31, 2009 |
| 7342458 |
Negative gain transductance amplifier circuit |
Mar. 11, 2008 |
| 7292092 |
Tunable poly-phase filter and method for calibration thereof |
Nov. 6, 2007 |
| 7274276 |
Amplifier circuit, gyrator circuit, filter device and method for amplifying a signal |
Sep. 25, 2007 |
| 7253707 |
Tunable active inductor |
Aug. 7, 2007 |
| 7215227 |
Gm-C filter compensation |
May. 8, 2007 |
| 7199685 |
Three-terminal, tunable active inductor |
Apr. 3, 2007 |
| 7068130 |
Active inductor |
Jun. 27, 2006 |
| 7058382 |
Method of eliminating a DC component and filtering device obtained by this method |
Jun. 6, 2006 |
| 7042317 |
High-frequency active inductor |
May. 9, 2006 |
| 7012487 |
Transconductance device employing native MOS transistors |
Mar. 14, 2006 |
| 6737944 |
Active inductor |
May. 18, 2004 |
| 6577212 |
Integrated circuit |
Jun. 10, 2003 |
| 6545569 |
Filtering device and method of eliminating a DC component by shifting the transfer function |
Apr. 8, 2003 |
| 6515560 |
Active inductor |
Feb. 4, 2003 |
| 6404308 |
Phase-compensated impedance converter |
Jun. 11, 2002 |
| 6340916 |
Ransimpedance amplifier circuit |
Jan. 22, 2002 |
| 6327465 |
Voltage tunable active inductorless filter |
Dec. 4, 2001 |
| 6317016 |
Method and arrangement for gyration filtering with low power consumption |
Nov. 13, 2001 |
| 6107893 |
Voltage tunable active inductorless oscillator |
Aug. 22, 2000 |
| 6025765 |
Gyrator with loop amplifiers connected to inductive elements |
Feb. 15, 2000 |
| 5825265 |
Grounded inductance circuit using a gyrator circuit |
Oct. 20, 1998 |
| 5793251 |
Demodulator circuit using gyrator circuit |
Aug. 11, 1998 |
| 5635884 |
Grounded inductance circuit using gyrator circuit |
Jun. 3, 1997 |
| 5635880 |
CMOS microwave multiphase voltage controlled oscillator |
Jun. 3, 1997 |
| 5371801 |
Energy absorption apparatus |
Dec. 6, 1994 |
| 5343170 |
Voltage controlled oscillator provided with negative feedback biasing |
Aug. 30, 1994 |
| 5267027 |
Comb filter-type Y/C separator circuit |
Nov. 30, 1993 |
| 5263192 |
Integrated resonant circuit with temperature compensated quality factor |
Nov. 16, 1993 |
| 5256991 |
Broadband microwave active inductor circuit |
Oct. 26, 1993 |
| 5243431 |
Audio bandpass filter adaptive to differing television standards |
Sep. 7, 1993 |
| 5235223 |
Constant Q peaking filter utilizing synthetic inductor and simulated capacitor |
Aug. 10, 1993 |
| 5202655 |
Microwave active filter circuit using pseudo gyrator |
Apr. 13, 1993 |
| 5144287 |
Current level sensing circuit for use with gyrator circuitry |
Sep. 1, 1992 |
| 5093642 |
Solid state mutually coupled inductor |
Mar. 3, 1992 |
| 4952891 |
Filter circuit with automatic tuning |
Aug. 28, 1990 |
| 4947141 |
Oscillator network for radio receiver |
Aug. 7, 1990 |
| 4942603 |
Methods and apparatus for providing reciprocal impedance conversion |
Jul. 17, 1990 |
| 4812785 |
Gyrator circuit simulating an inductance and use thereof as a filter or oscillator |
Mar. 14, 1989 |
| 4760353 |
Integrated gyrator oscillator |
Jul. 26, 1988 |
| 4592069 |
Line powered modem |
May. 27, 1986 |
| 4565962 |
Gyrator |
Jan. 21, 1986 |
| 4485356 |
Variable low frequency sinusoidal oscillator using simulated inductance |
Nov. 27, 1984 |
| 4381489 |
Pass filter circuit arrangement |
Apr. 26, 1983 |
| 4349797 |
Phase-compensated integrated circuit |
Sep. 14, 1982 |
| 4338582 |
Electronically tunable resonator circuit |
Jul. 6, 1982 |
| 4290036 |
Filter circuit arrangement |
Sep. 15, 1981 |
| 4272735 |
Single amplifier variable gyrator |
Jun. 9, 1981 |
| 4245202 |
Floating gyrator having a current cancellation circuit |
Jan. 13, 1981 |
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