Transmitter architecture based on antenna parasitic switching
US8073392B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2007 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Apr 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention is a radio transmitter that includes an antenna having at least one driven element and at least one reflector element. The driven element is electrically coupled to a radio carrier source. At least one of the driven elements or the at least one reflector element, includes at least one switch to modulate the radio carrier. Also, a secure communication system includes a radio transmitter configured to transmit a modulated signal within an information beam width. Also, a method for modulating a radio signal includes the steps of causing the transmitted carrier signal to be modulated by the modulation signal in response to switching the at least one reflector switch. Also, a method for selecting desirable antenna reflector switch combinations includes performing a mathematical simulation to determine whether the combination of reflector switch positions results in a modulated signal that can be demodulated within an information beam width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.