Antenna diversity scheme employing band pass sampling and fast semiconductor switching
US8660511B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2011 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Apr 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A vehicle or other host station includes first and second antennas, a fast semiconductor switch, a switching controller, and an RF receiver. The controller toggles the switch at a calibrated switching rate to selectively and alternately connect the first antenna to one of the RF receiver and a load having a calibrated impedance value. The first antenna may be a parasitic element in any embodiment using the load. The semiconductor switch may be a CMOS device or a Gallium Arsenide semiconductor switch. A switching control method for use in a vehicle or other host station having the first antenna, the second antenna, and the RF receiver includes transmitting a switching signal from the controller to the switch, and toggling the switch at a calibrated switching rate in response to the switching signal to selectively and alternately connect the first antenna to one of the RF receiver and the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.