Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Reexamination Certificate
2006-06-06
2006-06-06
Nguyen, Linh My (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
C332S103000
Reexamination Certificate
active
07057426
ABSTRACT:
A frequency converter comprising a variable gain amplifier which amplifies the local oscillation signal according to a gain control signal and outputs an amplified local signal, an even harmonic mixer which is supplied with an input signal and an amplified local oscillation signal and outputs an output signal whose frequency is a sum of a first frequency of the input signal and a second frequency of two or more even numbered times a frequency of the amplified local oscillation signal, an amplitude detector which is supplied with the amplified local oscillation signal and outputs a direct current signal having an amplitude corresponding to an amplitude of the amplified local oscillation signal, and a comparator which compares the direct current signal of the amplitude detector with the reference direct current signal to generate an output signal as the gain control signal.
REFERENCES:
patent: 4207521 (1980-06-01), Takada
patent: 5262957 (1993-11-01), Hearn
patent: 5408698 (1995-04-01), Serizawa et al.
patent: 5416449 (1995-05-01), Joshi
patent: 5787126 (1998-07-01), Itoh et al.
patent: 0214491 (1987-03-01), None
patent: 2449999 (1980-09-01), None
patent: 08-242261 (1996-09-01), None
Watanabe Osamu
Yamaji Takafumi
Kabushiki Kaisha Toshiba
Nguyen Linh My
LandOfFree
Frequency converter, orthogonal demodulator and orthogonal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency converter, orthogonal demodulator and orthogonal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency converter, orthogonal demodulator and orthogonal... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3689841