Phase and amplitude signal sensing circuit for radio frequency (RF) transmitters
US9948409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2016 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Sep 20, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0416
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) transmitter for self-sensing power and phase of an RF signal is provided. A local oscillator (LO) is configured to generate a LO signal. A power amplifier is configured to generate the RF signal from the LO signal, wherein the LO and RF signals are periodic signals sharing a waveform and a frequency. An IQ de-modulator is configured to down convert the LO signal and the RF signal into an in-phase (I) signal and a quadrature (Q) signal, wherein direct current (DC) voltages respectively of the I and Q signals define power and phase of the RF signal. A method for self-sensing power and phase of an RF signal, and a radar system within which the RF transmitter is arranged, are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.