Self-oscillation communication module
US7907851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2005 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Feb 28, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Provided is a self-oscillation communication module in which an optical device, a solar battery, and a radio frequency (RF) device are monolithic-integrated. When an active layer of the optical device contains In(Ga)As quantum dots, the optical device can emit light ranging from 800 to 1600 nm and transmit signals at a high speed of 20 Gbps or higher. Since a light absorption layer of the solar battery is formed of InGa(Al)P which has a higher bandgap than silicon and high visible light absorptivity, the solar battery can generate a large current even with a very small light reception area. Therefore, the self-oscillation communication module can always operate using the solar battery without an external power source even in polar regions and deserts and can perform optical communication or high-frequency wireless communication with a wide frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.