Amplitude control system and method for communication systems
US8432219B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 6, 2011 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Nov 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0408
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplitude control system including one or more multi-element array power amplifiers (MEA-PA), each MEA-PA including multiple amplifiers, multiple capacitors, and multiple enable circuits. Each amplifier has an input coupled to a common input node and an output coupled to a corresponding one of multiple intermediate nodes. Each capacitor has a first end coupled to an output node and a second end coupled to a corresponding intermediate node. The enable circuits are collectively controlled by an amplitude control value, and each is operative to enable or disable a corresponding amplifier. The enable circuits may be dynamically controlled to modulate amplitude. A coupling circuit may be provided to couple an intermediate node to a reference node when a corresponding amplifier is disabled to adjust a coupling ratio. Each amplifier, when enabled, may receive one of multiple supply reference voltages. The capacitors may have equal capacitance or may be binary-weighted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.