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SYSTEM AND METHOD FOR HANDLING STRONG SIGNALS AND BLOCKERS IN THE RF FRONT END
SYSTEM AND METHOD FOR HANDLING STRONG SIGNALS AND BLOCKERS IN THE RF FRONT END
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机译:在射频前端处理强信号和阻塞的系统和方法
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摘要
An incoming RF signal can be amplified in a RF front end of a RF receiver by conveying the signal through one of a multiple amplification paths. On each path, the gain can be controlled by RF automatic gain control (AGC) circuits. Each amplification path can be designed to handle incoming signals in a designated power range and to optimize receiver performance characteristics such as the noise figure (NF) and odd harmonic linearity in that power range. Signal power can be measured at different locations of the receiver and bypass switches can be used to convey the RF signals down one of the multiple paths based on the power measurements, according to executable logical code. An incoming signal power hysteresis can be applied to stabilize the system. Further, signal power averaging and switch delaying mechanisms can be employed to stabilize the system for rapidly fluctuating signals.
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