31 pp.
31 pp.
| 3293 K 31 pp. | |
| View Document | ||
| Title | Some Notes on Wideband Feedback Amplifiers | |
| Author(s) | Fitch, V. | |
| Publication Date | March 16, 1949 | |
| Report Number | AECU-194 | |
| Unique Identifier | ACC0352 | |
| Other Numbers | LADC-661; LAMS-862; OSTI ID: 4428986 | |
| Research Org | Los Alamos Scientific Laboratory [Los Alamos National Laboratory, LANL] | |
| Sponsoring Org | U.S. Atomic Energy Commission (AEC) | |
| Subject | Instruments; Amplifiers; Circuits; Feedback; Frequency; Oscillations | |
| Related Web Pages | Val Fitch, the CP Violation, and Antimatter | |
| Abstract | The extension of the passband of wideband amplifiers is a highly important problem to the designer of electronic circuits. Throughout the electronics industry and in many research programs in physics and allied fields where extensive use is made of video amplifiers, the foremost requirement is a passband of maximum width. This is necessary if it is desired to achieve a more faithful reproduction of transient wave forms, a better time resolution in physical measurements, or perhaps just a wider band gain-frequency response to sine wave signals. The art of electronics is continually faced with this omnipresent amplifier problem. In particular, the instrumentation techniques of nuclear physics require amplifiers with short rise times, a high degree of gain stability, and a linear response to high signal levels. While the distributed amplifier may solve the problems of those seeking only a wide passband, the requirements of stability and linearity necessitate using feedback circuits. This paper considers feedback amplifiers from the standpoint of high-frequency performance. The circuit conditions for optimum steady-state (sinusoidal) and transient response are derived and practical circuits (both interstage and output) are presented which fulfill these conditions. In general, the results obtained may be applied to the low-frequency end. | |
| 3293 K 31 pp. | |
| View Document | ||
