Method and system for sharing low noise amplifier circuitry in a single chip bluetooth and wireless local area network

摘要

Aspects of a method and system for sharing low noise amplifier (LNA) circuitry in a single chip Bluetooth and wireless local area network (WLAN) system are disclosed. Aspects of the system may comprise a chip with integrated WLAN and Bluetooth radios. RF signals may be received via a single antenna coupled to a shared LNA integrated in chip. When WLAN signals are received they are communicated from the shared LNA to a subsequent amplification stage integrated within the WLAN radio. When Bluetooth signals are received they are communicated from the shared LNA to a subsequent amplification stage that comprises a transconductance amplifier integrated within the WLAN radio and an LNA load integrated within the Bluetooth radio. Gains in the LNAs, the transconductance amplifier, and/or the subsequent WLAN amplification stage may be dynamically adjusted. Outputs from the subsequent amplification stages may be communicated to mixers for further processing.

主权项

1. A method for processing signals received via a communication medium, the method comprising:
receiving, via a shared low noise amplifier (LNA) integrated within a chip, a signal for a first wireless protocol and a signal for a second wireless protocol, wherein a transconductance amplifier within said chip is directly coupled to said shared LNA and is utilized to couple an output of said shared LNA to a first radio or first receiver in said chip used for processing said signal for said first wireless protocol, and wherein a gain of said transconductance amplifier is dynamically adjusted utilizing a reference current.