Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Reexamination Certificate
2006-06-20
2009-10-06
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
C327S254000, C327S113000
Reexamination Certificate
active
07598787
ABSTRACT:
A signal generation apparatus, a frequency converting apparatus and a receiver, in which the signal generation apparatus includes an oscillator, a duty cycle adjusting circuit, and a signal generation circuit. The oscillator generates differential signals. The duty cycle adjusting circuit adjusts duty cycles of differential output signals, in response to at least one of a plurality of control signals, to adjust phases of the differential output signals generated according to a result of amplifying a difference between the differential signals input through a pair of input terminals so as to output duty cycle adjusted differential output signals to a pair of output terminals. The signal generation circuit outputs an in-phase signal and a quadrature-phase signal in response to the duty cycle adjusted differential output signals. The frequency converting apparatus includes a first mixer for mixing an input signal with the in-phase signal and a second mixer for mixing the input signal and the quadrature-phase signal.
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Donovan Lincoln
F. Chau & Assoc. LLC
Jager Ryan C
Samsung Electronics Co,. Ltd.
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