Tunable transceiver front end
US7269391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Nov 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/42
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transceiver front end includes a transmit/receive (T/R) switch, a first balun, a second balun, a low noise amplifier, a power amplifier, and compensation circuitry. The T/R switch is operably coupled to an antenna for receiving inbound radio frequency (RF) signals and for transmitting outbound RF signals. The first balun includes a single ended winding and a differential winding, where the single ended winding is operably coupled to the T/R switch. The second balun includes a single ended winding and a differential winding, where the single ended winding is operably coupled to the T/R switch. The low noise amplifier is operably coupled the differential winding of the first balun. The power amplifier is operably coupled to the differential winding of the second balun. The compensation circuitry is operably coupled to the first balun to compensate for at least one of phase imbalance, amplitude imbalance, and impedance imbalance of the first balun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.