18338642. ISOLATING DOWN-CONVERSION MIXER FOR A RADIO FREQUENCY (RF) TRANSCEIVER simplified abstract (QUALCOMM Incorporated)

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ISOLATING DOWN-CONVERSION MIXER FOR A RADIO FREQUENCY (RF) TRANSCEIVER

Organization Name

QUALCOMM Incorporated

Inventor(s)

Jang Joon Lee of San Diego CA (US)

Kyle David Holland of San Diego CA (US)

Prakash Thoppay Egambaram of San Diego CA (US)

Aleksandar Miodrag Tasic of San Diego CA (US)

ISOLATING DOWN-CONVERSION MIXER FOR A RADIO FREQUENCY (RF) TRANSCEIVER - A simplified explanation of the abstract

This abstract first appeared for US patent application 18338642 titled 'ISOLATING DOWN-CONVERSION MIXER FOR A RADIO FREQUENCY (RF) TRANSCEIVER

Simplified Explanation

The patent application is about a technique called carrier aggregation (CA) that can cause interference between carriers within a user equipment (UE). This interference, known as "desensing," can degrade the signal quality on the carriers involved in carrier aggregation. The patent proposes the use of isolating buffers at a down-conversion mixer to reduce the interference between multiple transmission lines carrying different carriers during CA operation.

  • Isolating buffers are coupled at a down-conversion mixer to isolate the transmission line from other transmission lines.
  • The isolating buffers reduce the interference between multiple transmission lines carrying different carriers during carrier aggregation.
  • This technique can be used in an RF transceiver that supports both 5G sub-7 GHz and 5G mmWave wireless networks and carrier aggregation across sub-7 GHz and mmWave bands.

Potential Applications

  • Mobile devices with carrier aggregation capabilities.
  • Wireless communication systems that support both sub-7 GHz and mmWave bands.

Problems Solved

  • Interference between carriers within a user equipment during carrier aggregation.
  • Degradation of signal quality on carriers involved in carrier aggregation.

Benefits

  • Improved signal quality on carriers involved in carrier aggregation.
  • Enhanced performance of mobile devices with carrier aggregation capabilities.


Original Abstract Submitted

Carrier aggregation (CA) may cause interference between operation on two or more carriers within a user equipment (UE). This interference can degrade signal quality on one or more of the carriers involved in the carrier aggregation, which may be referred to as “desensing” one or more carriers. One or more isolating buffers may be coupled at a down-conversion mixer at a point where the down-conversion mixer receives a signal from a transmission line for isolating the transmission line from other transmission lines. The isolating buffer may reduce the effect of interference between multiple transmission lines carrying different carriers during carrier aggregation (CA) operation. The isolating buffers may be used in an RF transceiver supporting both 5G sub-7 GHz and 5G mmWave wireless networks and carrier aggregation across sub-7 GHz and mmWave bands.

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