Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Reexamination Certificate
2006-07-11
2006-07-11
Nguyen, Minh (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
C327S101000, C327S361000, C455S323000
Reexamination Certificate
active
07075345
ABSTRACT:
A frequency converter converts a first current signal having a first frequency into a second current signal having a second frequency different fro the first frequency. The frequency converter includes an adder and a switching circuit. The adder adds the first current signal and a reference current signal to output a third current signal. The switching circuit passes only that portion of the third current signal larger in magnitude than a threshold current to output the second current signal.
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Toshiyuki Umeda, et al. “A 1V 2GHz CMOS Up-Converter Using Self-Switching Mixers” ISSCC 2002 Digest of Technical Papers, Feb. 6, 2002, pp. 402-403.
Patent Abstracts of Japan, JP 57-166706, Oct. 14, 1982.
Itakura Tetsuro
Otaka Shoji
Umeda Toshiyuki
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