Dynamic impedance matching in wireless communications

摘要

Aspects of a method and system for LNA adjustment to compensate for dynamic impedance matching are provided. In this regard, an antenna matching network may be configured to maximize received signal strength for a determined frequency and an amplifier gain may be adjusted based on the maximized signal strength such that output levels of the amplifier are between specified limits. The antenna matching network may be programmatically controlled via one or more switching elements. The amplifier gain may be programmatically controlled via one or more bias points. The antenna matching network may be configured for a plurality of frequencies in a frequency band, such as an FM broadcast band, and a configuration for each frequency may be stored. Accordingly, when the receiver is tuned to a frequency, a corresponding configuration may be retrieved from memory.

主权项

1. A receiver comprising:
one or more circuits, wherein for a selected frequency of a plurality of frequencies, said one or more circuits are configured to:
adjust a configuration of an antenna matching network within said receiver to maximize a received signal strength at said selected frequency, wherein said configuration is different from a configuration for an unselected frequency of said plurality of frequencies; andstore said configuration of said antenna matching network associated with said selected frequency in a memory of said system.