Microwave amplifier
US5363060A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Aug 9, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/601
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A microwave amplifier includes an amplifier, an impedance matching circuit for matching input and output impedances of the amplifier, and an open stub. The impedance matching circuit includes input and output side distributed constant lines each having a length equivalent to a 1/4 wavelength of a signal having the highest frequency in a desired frequency band. The open stub is disposed in the vicinity of the input or output side distributed constant line. The length of the open stub is varied to vary a narrow frequency band in which the maximum gain of the amplifier is attained. In this structure, the return loss is reduced and a uniform tuning in the frequency band is easily carried out using the open stub. In addition, the maximum potential of the amplifier is achieved in the desired frequency band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.