17443136. TRANSCEIVER DROOP CALIBRATION simplified abstract (QUALCOMM Incorporated)

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TRANSCEIVER DROOP CALIBRATION

Organization Name

QUALCOMM Incorporated

Inventor(s)

Muhammad Hassan of San Diego CA (US)

Jeremy Darren Dunworth of La Jolla CA (US)

TRANSCEIVER DROOP CALIBRATION - A simplified explanation of the abstract

This abstract first appeared for US patent application 17443136 titled 'TRANSCEIVER DROOP CALIBRATION

Simplified Explanation

The patent application describes a transceiver that has a calibration mode of operation to tune the impedance of a transmit chain based on a power measurement of a mixed RF calibration signal. This allows for the formation of a tuned transmit chain.

  • The transceiver uses a direct conversion technique to mix an RF calibration signal with a DC offset signal, resulting in a mixed calibration signal.
  • During normal operation, a heterodyne mixer combines an LO (Local Oscillator) signal with an IF (Intermediate Frequency) signal to generate an RF signal.
  • The RF signal is then amplified through the tuned transmit chain, which has its impedance adjusted based on the power measurement of the mixed calibration signal.

Potential applications of this technology:

  • Wireless communication systems: The transceiver can be used in various wireless communication devices such as smartphones, tablets, and IoT devices.
  • Radio frequency (RF) testing equipment: The calibration mode allows for accurate tuning and adjustment of the transmit chain, making it useful in RF testing and measurement equipment.

Problems solved by this technology:

  • Impedance tuning: The calibration mode helps in optimizing the impedance of the transmit chain, ensuring efficient signal transmission and reception.
  • Power measurement accuracy: The power measurement of the mixed calibration signal provides a reliable indication of the transmit chain's performance, allowing for precise adjustments.

Benefits of this technology:

  • Improved signal quality: The tuned transmit chain ensures optimal impedance matching, resulting in better signal quality and reduced signal loss.
  • Enhanced calibration accuracy: The power measurement of the mixed calibration signal enables accurate calibration and adjustment of the transmit chain, leading to improved overall system performance.


Original Abstract Submitted

A transceiver is configured for a calibration mode of operation in which an impedance of a transmit chain is tuned responsive to a power measurement of a mixed RF calibration signal to form a tuned transmit chain. A direct conversion mixes an RF calibration signal with a DC offset signal to form the mixed calibration signal. During a normal mode of operation, a heterodyne mixer mixes an LO signal with an IF signal to produce an RF signal that is amplified through the tuned transmit chain.

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