Electromagnetic wave transmitter systems, methods and articles of manufacture
US7502422B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2003 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | May 5, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/361
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmitter comprises a baseband processor, a wideband phase modulator and an amplitude modulated amplifier. A signal is provided through the baseband processor and is converted into polar coordinates, comprised of amplitude and phase components, with the amplitude component being transmitted to the amplitude modulated amplifier. The amplitude modulated amplifier being comprised of independently controllable current sources, and with the phase component being transmitted to the wideband phase modulator, for modulation upon a carrier wave, and subsequent transmission to the amplitude modulated amplifier for amplification according to control imposed by the amplitude component upon the current sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.