Impedance-matching device for power amplifier circuit
US4558285A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/09672
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A broad-band impedance-matching device for an RF vacuum tube power amplifier incorporates a circuit having multiple inductors and capacitors interconnected in an impedance-matching circuit, said circuit having a low impedance input and high impedance output and made up of a plurality of series connected inductors and capacitors. Impedance transformation is performed in a number of small steps, which enables the use of a much lower cue than would be necessary if the impedance transformation were done in a single step. The arrangement produces an impedance transformation which holds over a relatively broad band width, making in unnecessary for any fine tuning of the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.