Telecommunications – Transmitter – Frequency conversion
Reexamination Certificate
2008-01-22
2008-01-22
Urban, Edward F. (Department: 2618)
Telecommunications
Transmitter
Frequency conversion
C455S190100, C455S313000, C455S323000, C327S119000, C327S113000
Reexamination Certificate
active
07321751
ABSTRACT:
An apparatus for improving dynamic range includes a frequency down-conversion module that receives an input signal and a bias circuit. The bias circuit includes a first resistor and a second resistor. The first resister has a first terminal coupled to a bias point and a second terminal coupled to a first voltage reference. The second resistor has a first terminal coupled to the bias point and a second terminal coupled to a second voltage reference. The bias point is coupled to the input signal. The frequency down-conversion module outputs a down-converted output signal. The bias circuit thereby adjusts a voltage of the input signal.
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Bultman Michael J
Cook Robert W
Looke Richard C
Moses, Jr. Charley D
Rawlins Gregory S
Chow Charles
ParkerVision, Inc.
Sterne Kessler Goldstein & Fox PLLC
Urban Edward F.
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