Transmitter and receiver impedence control using shunt switches
US8442451B1 · kind B1 · utility
4Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2010 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jan 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/525
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Circuits, methods, and apparatus that provide isolation between receive and transmit circuits in a wireless transceiver. One example provides switches that can be included on an integrated circuit with at least portions of a wireless transceiver. These switches vary the impedance of transmitter and receiver circuits between a termination impedance and a high impedance by inserting or removing components in parallel with matching networks. Signal losses are minimized since these switches are shunt connected to input and output paths on the wireless circuit and are not connected directly in either signal path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.