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Patents

Breakthrough in Multi-Protocol RF Transceiver Technology

Strategic Insights

— 1 min read

Wu and Major's invention of the multi-protocol RF transceiver has opened up new possibilities for communication between RFID readers and tags. This breakthrough technology utilizes an analog front end and a digital backend to enable efficient and accurate data transfer between devices. The transceiver's innovative design allows for the demodulation of received signals into in-phase and quadrature components, which are then digitized and processed by a digital signal processor.

Key Takeaways:

  • The multi-protocol RF transceiver was invented by Wu and Major, and is assigned to Broadcom Corporation (Irvine, CA).
  • The transceiver allows communication between RFID readers and tags, utilizing an analog front end and a digital backend.
  • The receiver portion of the transceiver utilizes down-conversion mixers to demodulate received signals into in-phase and quadrature components.
  • Analog-to-digital converters (ADCs) digitize the signal, and a digital signal processor (DSP) processes the digital signal using a matched filter for data detection.
  • The RFID tag uses a pulse/level detector with an analog comparator and a sample and hold circuit to detect the received signal.
  • A digital decoder/controller decodes the incoming data and establishes a sampling clock for the pulse/level detector.
  • An automatic gain control (AGC) circuit adjusts the receiver gain according to the received signal strength and controls tuning of magnetic coupling circuitry.
  • The patent was filed under Application No. 13/016,251 on January 28, 2011.
  • The patent number is 8,064,873, assigned to Broadcom Corporation.

Statistics:

  • The patent was issued on November 22.
  • The transceiver uses down-conversion mixers to demodulate received signals.
  • The transceiver employs analog-to-digital converters (ADCs) to digitize the signal.
  • The digital signal processor (DSP) uses a matched filter for data detection.
  • The RFID tag has a pulse/level detector with an analog comparator and a sample and hold circuit.
  • The transceiver's automatic gain control (AGC) circuit adjusts the receiver gain according to the received signal strength.
  • The patent was filed on January 28, 2011.

Sources:

  • United States Patent & Trademark Office: Application No. 13/016,251, filed January 28, 2011.
  • United States Patent no. 8,064,873, issued on November 22, to Broadcom Corporation.

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