Qualcomm incorporated (20240106474). MIXER SECOND-ORDER INPUT INTERCEPT POINT (IIP2) CALIBRATION USING A SINGLE TONE GENERATOR AND/OR REVERSE FEEDTHROUGH simplified abstract

MIXER SECOND-ORDER INPUT INTERCEPT POINT (IIP2) CALIBRATION USING A SINGLE TONE GENERATOR AND/OR REVERSE FEEDTHROUGH

Organization Name

qualcomm incorporated

Inventor(s)

Gary Lee Brown, Jr. of Carlsbad CA (US)

Chirag Dipak Patel of San Diego CA (US)

Prakash Thoppay Egambaram of San Diego CA (US)

MIXER SECOND-ORDER INPUT INTERCEPT POINT (IIP2) CALIBRATION USING A SINGLE TONE GENERATOR AND/OR REVERSE FEEDTHROUGH - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240106474 titled 'MIXER SECOND-ORDER INPUT INTERCEPT POINT (IIP2) CALIBRATION USING A SINGLE TONE GENERATOR AND/OR REVERSE FEEDTHROUGH

Simplified Explanation

The abstract describes methods and apparatus for calibrating the second-order input intercept point (IIP2) of a mixer, such as one in a wireless receive chain. The calibration circuit includes a first receive chain with a mixer and a single tone generator generating a calibration signal with a single baseband tone. The method involves applying the calibration signal to the mixer, adjusting it to minimize the power of the differential tone at the output.

• Explanation of the patent/innovation:
• Calibration of the second-order input intercept point (IIP2) of a mixer in a wireless receive chain.
• Circuit includes a first receive chain with a mixer and a single tone generator.
• Method involves generating a calibration signal with a single baseband tone, applying it to the mixer, and adjusting to minimize the power of the differential tone at the output.

Potential Applications

This technology can be applied in:

• Wireless communication systems
• Radio frequency (RF) receivers
• Signal processing equipment

Problems Solved

This technology helps in:

• Improving the performance of mixers in wireless receive chains
• Enhancing the linearity and accuracy of signal processing

Benefits

The benefits of this technology include:

• Increased signal quality
• Enhanced receiver sensitivity
• Improved overall system performance

Potential Commercial Applications

This technology can be commercially applied in:

• Mobile phones
• Satellite communication systems
• Radar systems

Possible Prior Art

One possible prior art for this technology could be:

• Existing calibration methods for mixers in communication systems

How does this calibration method compare to existing techniques in terms of accuracy and efficiency?

This article does not provide a direct comparison with existing calibration techniques. It would be beneficial to understand the specific advantages and limitations of this method compared to others in the field.

What impact does this calibration process have on the overall cost and complexity of the receiver chain in wireless communication systems?

The article does not address the cost and complexity implications of implementing this calibration process. Understanding how this technology affects the overall system design and production costs would be valuable for potential adopters.

Original Abstract Submitted

methods and apparatus for calibration of a second-order input intercept point (iip2) of a mixer, such as a mixer in a wireless receive chain. one example circuit for mixer iip2 calibration generally includes a first receive chain comprising a first mixer and a single tone generator having an output coupled to an input of the first mixer and configured to generate a calibration signal having a single baseband tone. one example method of mixer iip2 calibration generally includes generating a calibration signal comprising a single baseband tone, applying the calibration signal to an input of a mixer, such that the mixer generates a differential tone at an output of the mixer, and adjusting the mixer to minimize a power of the differential tone at the output of the mixer.