Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Reexamination Certificate
2006-05-11
2010-02-23
Le, Thanh C (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
C455S226100, C455S234100
Reexamination Certificate
active
07668521
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.
REFERENCES:
patent: 5907798 (1999-05-01), Abramsky et al.
patent: 6978125 (2005-12-01), Lindell et al.
patent: 2006/0068740 (2006-03-01), Yokoyama
Takeuchi et al. “asingle chip RF front end for the digital sound broadcasting” by Sony Corporation. Jun. 25, 2001.
Patrick Antonine, et al.,A Direct-Conversion Receiver For DVB-H, IEEE Journal of Solid-State Circuits, vol. 40, No. 12, Dec. 2005, pp. 2536-2546.
Mark Dawkins, Alison Payne Burdett, Nick Cowley,A Single-Chip Tuner For DVB-T, IEEE Journal of Solid-State Circuits, vol. 38, No. 8, Aug. 2003, pp. 1307-1317.
EICTA—European Industry Association, Information Systems Communication Technologies Consumer Electronics, EICTA/TAC/MBRAI-0216,Mobile and Portable DVB-T Radio Access Interface Specification, Version 1.0, Jan. 1, 2004, pp. 1-46.
Kapnistis Charalampos P.
Vassiliou Iason F.
Vavelidis Konstantinos D.
Broadcom Corporation
Le Thanh C
McAndrews Held & Malloy
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