Telecommunications – Receiver or analog modulated signal frequency converter – Measuring or testing of receiver
Reexamination Certificate
2007-04-10
2007-04-10
Tran, Pablo N. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Measuring or testing of receiver
C455S227000, C455S234200, C455S313000, C455S326000, C375S224000
Reexamination Certificate
active
10099626
ABSTRACT:
A method is disclosed for operating a RF receiver of a communications equipment, as is circuitry for implementing the method. The method includes, while operating under the control of a data processor of the communications equipment, generating a calibration signal; injecting the calibration signal into a low noise amplifier (LNA) of the RF receiver; measuring a downconverted response of the receiver at a plurality of different frequencies of the calibration signal, or measuring the downconverted response of the receiver at a plurality of different LNA tuning combinations using a fixed calibration frequency, and at least one of tuning a resonance frequency of at least one LNA resonator based on the measured downconverted response so as to compensate at least for variations in component values that comprise the at least one resonator, or adjusting the linearity of the receiver.
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Gustafsson Mikael
Makitalo Mika
Parssinen Aarno
Seppinen Pauli
Harrington & Smith ,LLP
Nokia Corporation
Tran Pablo N.
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