BALUN circuit for combining differential power amplifier outputs
US6466770B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1999 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Aug 31, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0458
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A BALUN circuit comprising a lead network coupled to the positive phase output of a differential power amplifier, a negative phase output coupled to the negative phase output of the differential amplifier, and a delay element coupled in series with the lag network. The output of the lead network and the delay element are combined to form a single-ended output. The lag and lead networks may adjust the output impedances of the positive and negative phase outputs so that the output impedance of the single-ended output is set to a desired value. In one implementation, selected components of the lag and lead networks, and the delay element, comprise printed elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.