Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Reexamination Certificate
2005-03-02
2010-10-19
Nguyen, Hai L (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
C327S115000, C327S238000
Reexamination Certificate
active
07816953
ABSTRACT:
A frequency dividing section is made up of a frequency divider for dividing output of a local oscillator, a frequency divider for dividing output of an in-phase local oscillation signal of the frequency divider, and a dummy circuit connected to the output terminal of a quadrature local oscillation signal of the frequency divider. At the first frequency band operation time, output of the frequency divider is used for modulation and demodulation and at the second frequency band operation time, output of the frequency divider is used for modulation and demodulation. Although the frequency divider is shared between the first and second frequency bands, the dummy circuit is made the same circuit as an input amplifier of the frequency divider at the first frequency band operation time, so that the phase difference between the in-phase local oscillation signal and the quadrature local oscillation signal output by the frequency divider can be kept. Accordingly, the frequency dividers are shared and combined for lessening the circuit scale.
REFERENCES:
patent: 6545517 (2003-04-01), Asam
patent: 6714765 (2004-03-01), Kimppa
patent: 6815993 (2004-11-01), Ishimoto et al.
patent: 6917232 (2005-07-01), Wyatt et al.
patent: 6963236 (2005-11-01), Berkram et al.
patent: 7403048 (2008-07-01), Heidari et al.
patent: 7508273 (2009-03-01), Redman-White
patent: 1379928 (2002-11-01), None
patent: 1156988 (2004-07-01), None
patent: 9-261106 (1997-10-01), None
patent: 2000-124829 (2000-04-01), None
patent: 2002-64397 (2002-02-01), None
patent: 2002-280924 (2002-09-01), None
Chinese Office Action, Aug. 28, 2008.
Hongming Li: Lectures on Digital Integrated Circuit (5), Electronic World, vol. 8, 1998, pp. 40-41, Aug. 1, 1998.
Aoki, “Analog IC no Kinou Kairo Sekkei Nyuumon”, CQ Shuppansha, p. 169 (English Translation).
International Search Report of International Publication No. WO 2005-086366.
Hosokawa Yoshifumi
Matsuo Michiaki
Saito Noriaki
Shimizu Yoshito
Nguyen Hai L
Panasonic Corporation
Pearne & Gordon LLP
LandOfFree
Frequency dividing circuit and multimode radio device using... 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 dividing circuit and multimode radio device using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency dividing circuit and multimode radio device using... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4235889