Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2006-09-19
2006-09-19
Nguyen, Khanh Van (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S260000, C327S359000
Reexamination Certificate
active
07109795
ABSTRACT:
An amplifier mixer device includes an amplifier structure having at least one amplifier input and at least one amplifier output. At least one of the amplifier outputs is looped back via a feedback to at least one of the amplifier inputs. The amplifier structure includes a mixer structure. The mixer structure comprises at least one switch having a switch input communicatively connected with the radio input, and a switch output communicatively connected with the mixer output. The switch input and switch output in a conducting state of the switch are electrically connected with each other and in a non-conducting state of the switch are electrically substantially not connected with each other. In use, the switch is switched from the conducting state to the non-conducting state and vice versa with the local oscillator signal.
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E.H. Nordholt, “Design of High-Performance Negative Feedback Amplifiers,” Delft University Press, Delft, The Netherlands, © 1993.
Nguyen Khanh Van
Telefonaktiebolaget LM Ericsson (publ)
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