H.F. Broadband amplifier
US4354161A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1980 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Mar 6, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/72
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An H.F. broadband amplifier comprises a transistorized differential amplifier input stage the potential of which is set by a voltage divider circuit, and an additional transistor for attenuating a.c. signals present at the input of the amplifier in its turned off stage, the emitter-collector parts of the additional transistor being connected into a collector current circuit of a transistor of the differential amplifier, and the base of the additional transistor being operated in base connection, and switched to a reference potential of low resistence in HF terms to reduce the capacitative coupling between input, and output of the amplifier circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.