Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2006-12-05
2006-12-05
Bayard, Emmanuel (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
Reexamination Certificate
active
07145967
ABSTRACT:
A frequency shift key decoding apparatus, having a frequency divider, a signal frequency splitter, and a demodulator. The signal frequency splitter has a frequency synthesizer, (n−1) first mixers, n second mixers, and n filters, where n is an integer equal to or larger than 2. The present invention can be applied to a multi-function wireless receiver that supports multiple peripherals. Since a plurality of local carrier signals is generated by only (n−1) mixers, the frequency of the local carrier signals can be randomly changed. As the mixers occupy a very small area of the integrated circuit chip, the fabrication cost is low. Further, since the mixers are easily implemented using a digital circuit, the frequency shift key decoding apparatus, and even the whole wireless receiver can be implemented in a single chip.
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Bayard Emmanuel
Novatek Microelectronics Corp.
Williams Lawrence
LandOfFree
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