Communications system with variable load and related method
US7444122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2007 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Jun 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C3/225
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A mobile system has a frequency synthesizer and an amplifier module coupled to the frequency synthesizer. The frequency synthesizer is controlled by frequency division data to generate a tuning signal with a frequency corresponding to a reference signal and the frequency division data. The mobile system provides an input signal based on the frequency of the tuning signal having a frequency spectrum corresponding to the frequency of the tuning signal. The amplifier module has a variable load circuit for providing an equivalent impedance, an amplifier circuit coupled to the variable load circuit for establishing an output signal corresponding to the input signal and the equivalent impedance of the variable load circuit, and a mapping circuit for modifying the equivalent impedance of the variable load circuit based on the frequency division data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.