Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Reexamination Certificate
2010-02-22
2011-12-20
Le, Thanh (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
Reexamination Certificate
active
08081941
ABSTRACT:
Aspects of a method and system for an RF front-end calibration scheme using signals from a fractional-N frequency synthesized and received signal strength indicator (RSSI) are provided. A frequency synthesizer within a wireless receiver may generate a signal for dynamically modifying a gain in an integrated low-noise amplifier (LNA) for each selected receiver channel. The frequency-synthesized signals may be applied to at least one tunable load communicatively coupled to the LNA. The tunable load may be an input load or an output load. The signal generated by the frequency synthesizer may be sequentially applied to the input load and the output load. A logarithmic amplifier may generate an RSSI signal from the LNA output during the calibration process. The RSSI signal may be utilized for controlling a tunable load coupled to the LNA and optimize the tuning of the LNA in a desired channel by adjusting the tunable load.
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Kapnistis Charalampos
Vassiliou Iason
Vavelidis Konstantinos
Broadcom Corporation
Le Thanh
McAndrews Held & Malloy Ltd.
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