Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit
Reexamination Certificate
2008-01-29
2008-01-29
Maung, Nay (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
With particular receiver circuit
C455S118000, C455S127200, C455S127300, C327S359000
Reexamination Certificate
active
07324799
ABSTRACT:
The invention relates to a device for frequency conversion, comprising exactly one multi-band mixer (3) with means for transferring a signal (2) that is applied to the signal input of said multi-band mixer (3) from said signal's source frequency band to one out of a plurality of target frequency sub-bands at a time, yielding a transferred signal (4) at the signal output of said multi-band mixer (3), wherein said plurality of target frequency sub-bands defines at least a first and a second target frequency band, and a bank of switchable Variable Gain Amplifiers (VGAs) (5-1, 5-2) for amplifying said transferred signal (4), wherein for each of said target frequency bands, one switchable VGA (5-1, 5-2) is provided that is adapted to said target frequency band and is connected to the signal output of said multi-band mixer (3). The invention also relates to a method for frequency conversion.
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Maung Nay
Nguyen Tuan H.
Nokia Corporation
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