Qualcomm incorporated (20240106490). TRANSMIT (TX) LOCAL OSCILLATOR (LO) LEAKAGE CALIBRATION simplified abstract

TRANSMIT (TX) LOCAL OSCILLATOR (LO) LEAKAGE CALIBRATION

Organization Name

qualcomm incorporated

Inventor(s)

Chinmaya Mishra of San Diego CA (US)

Abdellatif Bellaouar of Richardson TX (US)

Damin Cao of San Diego CA (US)

Rajagopalan Rangarajan of San Diego CA (US)

Kevin Hsi-Huai Wang of San Diego CA (US)

TRANSMIT (TX) LOCAL OSCILLATOR (LO) LEAKAGE CALIBRATION - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240106490 titled 'TRANSMIT (TX) LOCAL OSCILLATOR (LO) LEAKAGE CALIBRATION

Simplified Explanation

The patent application describes a transmit local oscillator leakage calibration circuit for a transceiver, which includes various components such as an interface circuit, impedance control circuit, power detector, and local oscillator cancellation element.

• The interface circuit is connected to the transmit and receive portions of the transceiver.
• The impedance control circuit is connected to a low noise amplifier in the receive portion and is responsible for adjusting the input impedance for the amplifier.
• The power detector is coupled to the output of the low noise amplifier to detect leakage from the transmit local oscillator.
• The local oscillator cancellation element is connected to the power detector and adjusts the input to the transmit portion based on the detected leakage.

Potential Applications

This technology could be used in wireless communication systems to improve the performance of transceivers by reducing local oscillator leakage.

Problems Solved

1. Minimizing local oscillator leakage in transceivers. 2. Improving the overall signal quality in wireless communication systems.

Benefits

1. Enhanced signal integrity. 2. Increased efficiency of transceivers. 3. Improved overall performance of wireless communication systems.

Potential Commercial Applications

Optimizing wireless communication devices for better signal quality and performance.

Possible Prior Art

There may be existing technologies or methods for calibrating local oscillator leakage in transceivers, but specific prior art is not provided in the abstract.

How does this technology compare to existing methods for local oscillator leakage calibration in transceivers?

This article does not provide a direct comparison to existing methods, leaving the reader to wonder about the advantages and disadvantages of this new approach.

What impact could this technology have on the design and cost of wireless communication systems?

The article does not address the potential implications of implementing this technology on the overall design and cost of wireless communication systems, leaving this question unanswered.

Original Abstract Submitted

a transmit (tx) local oscillator (lo) leakage calibration circuit including a transceiver having a transmit portion and a receive portion, an interface circuit connected to the transmit portion and the receive portion, an impedance control circuit connected to a low noise amplifier (lna) in the receive portion, the impedance control circuit configured to adjust an input impedance for the lna, a power detector coupled to an output of the lna, and a local oscillator cancellation element connected to the power detector, the local oscillator cancellation element configured to adjust an input to the transmit portion based on tx lo leakage detected by the power detector.