Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Reexamination Certificate
2006-01-03
2006-01-03
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
C327S238000
Reexamination Certificate
active
06982584
ABSTRACT:
An in phase quadrature signal generator including a phase shifter (1) that receives at an input terminal (2) an input signal (Vin) supplied to phase shifting means (3,4) formed of passive elements, arranged for delivering at first and second output terminals, first (Out—I) and second (Out—Q) in phase quadrature signals. This generator is characterised in that it further includes, between the phase shifting means and the output terminals, transconductor means (11, 12) having a transconductance proportional to the passive elements, arranged so as to obtain a transfer function between said first and second in phase quadrature signals independent of said passive elements.
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Callahan Timothy P.
Cox Cassandra
CSEM Centre Suisse d'Electronique et de Microtechnique S.A. Rech
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