Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2008-01-08
2008-01-08
Payne, David C. (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S316000, C375S324000
Reexamination Certificate
active
07317768
ABSTRACT:
The invention relates to a demodulator and also a demodulation method and enables a reliable demodulation even when the intermediate frequency range overlaps the range of the data frequencies of the signal. For this purpose, a rapidly oscillating output signal is generated from the in-phase signal and also the quadrature signal, the sign of which output signal varies in a manner dependent on the product of the signs of the in-phase signal and of the quadrature signal. Either an XOR gate or a multiplier stage may be used in order to generate an output signal of this type.
REFERENCES:
patent: 4558284 (1985-12-01), Zaidenweber
patent: 4577158 (1986-03-01), Kuroda
patent: 5974096 (1999-10-01), Seki et al.
patent: 6985541 (2006-01-01), Luff
patent: 2002/0043557 (2002-04-01), Mizoguchi et al.
patent: 198 10 558 (1999-09-01), None
patent: 417 528 (1991-03-01), None
patent: 417528 (1991-03-01), None
patent: 2 351 623 (2001-01-01), None
“The First Very Low-IF RX, 2-Point Modulation TX CMOS System On Chip Bluetooth Solution”, C. Durdodt, M. Friedrich, C. Grewing, M. Hammes, A. Hanke, S. Heinem, J. Oehm, D. Pham-Stabner, D. Seippel, D. Theil, S. Van Waasen and E. Wagner, 2001 IEEE Radio Frequency Integrated Circuits Symposium, pp. 99-102.
International Search Report, International Application No. PCT/DE02/02091, International Filing Date Jun. 7, 2002, 4 pgs.
Grewing Christian
Hammes Markus
Hanke Andre
Van Waasen Stefan
Eschweiler & Associates LLC
Guarino Rahel
Infineon - Technologies AG
Payne David C.
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