System and method for controlling antenna tuning using an auxiliary channel of an embedded display port interface
US8369808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2010 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Aug 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An information handling system includes a capacitor, an antenna, a wireless wide area network card, an embedded display port interface, and a digital-to-analog converter. The capacitor has a variable capacitance that varies based on a voltage applied to the capacitor. The antenna is coupled to the capacitor, and has a variable resonance frequency that is based on the variable capacitance. The wireless wide area network card is in communication with the antenna, and is configured to set the variable resonance frequency to a specific frequency based on a control signal. The embedded display port interface is configured to transmit the control signal from the wireless wide area network card to a display control circuit via an auxiliary channel of the embedded display port interface. The digital-to-analog converter is in communication with the display control circuit, and is configured to provide the voltage to the capacitor in response to a signal from the display control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.