Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-03-21
2009-11-03
Le, Thanh C (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S266000, C455S307000
Reexamination Certificate
active
07613439
ABSTRACT:
Methods and systems for programmable baseband filters supporting auto-calibration in a mobile digital cellular television environment are provided. Aspects of the method may include generating within a single-chip multi-band RF receiver, at least one control signal based on signal strength of a baseband frequency signal generated within the single-chip multi-band RF receiver. A bandwidth of a filter integrated within the single-chip multi-band RF receiver may be adjusted via the generated at least one control signal. The filter may be used for filtering the generated baseband frequency signal. A frequency response signal of the filter integrated within the single-chip multi-band RF receiver may be determined via a reference frequency signal. An attenuated reference frequency signal may be generated by attenuating the reference frequency signal. The attenuated reference frequency signal may be compared with the frequency response signal. The at least one control signal may be generated based on the comparison.
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Broadcom Corporation
Le Thanh C
McAndrews Held & Malloy Ltd.
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