Wireless transmitter calibration using absolute power requests
US8437793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2009 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Jun 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/13
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Test systems are provided for performing testing and calibration operations on wireless circuitry in electronic devices. The electronic devices may include cellular telephones and other portable electronic devices. Wireless circuitry in a device may include a radio-frequency transceiver that is controlled based on radio-frequency transceiver control signals. The wireless circuitry may also include power amplifier circuitry. The power amplifier circuitry may receive radio-frequency signals from the transceiver and may produce correspondingly amplified radio-frequency output signals for wireless transmission with an antenna. The power amplifier circuitry may be powered by a bias voltage. The test systems may provide the electronic device with a transmit power request that directs the electronic device to produce a desired output power. The test systems may measure the actual resulting power. After sufficient measurements have been made, the test systems may calibrate the transceiver and power amplifier settings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.