JPS57500403A - - Google Patents
Info
- Publication number
- JPS57500403A JPS57500403A JP56501307A JP50130781A JPS57500403A JP S57500403 A JPS57500403 A JP S57500403A JP 56501307 A JP56501307 A JP 56501307A JP 50130781 A JP50130781 A JP 50130781A JP S57500403 A JPS57500403 A JP S57500403A
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/0416—Frequency selective two-port networks using positive impedance converters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/40—Impedance converters
- H03H11/405—Positive impedance converters
Landscapes
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/134,382 US4339729A (en) | 1980-03-27 | 1980-03-27 | Analog integrated filter circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57500403A true JPS57500403A (en]) | 1982-03-04 |
| JPH0218616B2 JPH0218616B2 (en]) | 1990-04-26 |
Family
ID=22463117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56501307A Expired JPH0218616B2 (en]) | 1980-03-27 | 1981-02-18 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4339729A (en]) |
| EP (1) | EP0048260A4 (en]) |
| JP (1) | JPH0218616B2 (en]) |
| CA (1) | CA1161504A (en]) |
| WO (1) | WO1981002819A1 (en]) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4481480A (en) * | 1982-10-04 | 1984-11-06 | Tektronix, Inc. | Feedback amplifier having a voltage-controlled compensation circuit |
| AU604797B2 (en) * | 1986-12-27 | 1991-01-03 | Sony Corporation | Filter adjustment apparatus and method |
| GB2217937A (en) * | 1988-04-29 | 1989-11-01 | Philips Electronic Associated | Current divider circuit |
| US4897616A (en) * | 1988-07-25 | 1990-01-30 | Burr-Brown Corporation | Wide band amplifier with current mirror feedback to bias circuit |
| GB2236444A (en) * | 1989-09-27 | 1991-04-03 | Motorola Inc | Current mirror |
| DE4041761A1 (de) * | 1990-12-24 | 1992-06-25 | Standard Elektrik Lorenz Ag | Stromsenke |
| DE69215281T2 (de) * | 1991-06-28 | 1997-06-12 | Sanyo Electric Co | Kapazitive Schaltung |
| US5373243A (en) * | 1991-09-26 | 1994-12-13 | U.S. Philips Corporation | Impedance transformation circuit with matched current sources |
| US5327027A (en) * | 1991-12-24 | 1994-07-05 | Triquint Semiconductor, Inc. | Circuit for multiplying the value of a capacitor |
| US5325070A (en) * | 1993-01-25 | 1994-06-28 | Motorola, Inc. | Stabilization circuit and method for second order tunable active filters |
| FR2716052B1 (fr) * | 1994-02-09 | 1996-03-29 | Alcatel Mobile Comm France | Dispositif d'ajustement d'une fréquence de coupure d'un filtre, et filtre comportant un tel dispositif. |
| EP0675595B1 (en) * | 1994-03-29 | 1998-05-20 | STMicroelectronics S.r.l. | Current divider and ramp generator with relatively long time constant using such a current divider |
| US5774021A (en) * | 1996-10-03 | 1998-06-30 | Analog Devices, Inc. | Merged transconductance amplifier |
| US5859568A (en) * | 1997-04-11 | 1999-01-12 | Raytheon Company | Temperature compensated amplifier |
| EP0907250A3 (en) * | 1997-09-25 | 1999-10-27 | Motorola Ltd | Integrated analog low-pass filter |
| US6943619B1 (en) * | 2003-05-21 | 2005-09-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Practical active capacitor filter |
| US7622991B2 (en) * | 2007-08-22 | 2009-11-24 | Don Roy Sauer | Transconductance signal capacity format |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1434332A (en) * | 1973-02-15 | 1976-05-05 | Motorola Inc | Integrated circuit filtering circuit |
| US3969682A (en) * | 1974-10-21 | 1976-07-13 | Oberheim Electronics Inc. | Circuit for dynamic control of phase shift |
| US4205276A (en) * | 1978-12-04 | 1980-05-27 | National Semiconductor Corporation | Audio amplifier with low AM radiation |
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1980
- 1980-03-27 US US06/134,382 patent/US4339729A/en not_active Expired - Lifetime
-
1981
- 1981-02-18 EP EP19810900880 patent/EP0048260A4/en not_active Ceased
- 1981-02-18 WO PCT/US1981/000204 patent/WO1981002819A1/en not_active Application Discontinuation
- 1981-02-18 JP JP56501307A patent/JPH0218616B2/ja not_active Expired
- 1981-02-19 CA CA000371291A patent/CA1161504A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4339729A (en) | 1982-07-13 |
| WO1981002819A1 (en) | 1981-10-01 |
| EP0048260A1 (en) | 1982-03-31 |
| JPH0218616B2 (en]) | 1990-04-26 |
| CA1161504A (en) | 1984-01-31 |
| EP0048260A4 (en) | 1982-07-30 |