Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Reexamination Certificate
2007-02-16
2010-02-23
Jackson, Blane J (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
Reexamination Certificate
active
07668527
ABSTRACT:
A frequency-mixing device performing voltage multiplying and low-pass filtering operations in addition to the frequency mixing is provided. The three operations may be carried out with the same components by designing the frequency mixer appropriately. The frequency mixer comprises a balanced input port to receive a balanced input signal, an oscillator signal input port to receive a first and a second oscillator signal and a first, a second, and a third capacitance. First switching means are arranged to connect, in response to the first oscillator signal, the first and the second capacitance between a first and a second input port of the balanced input port. Second switching means are arranged to connect, in response to the second oscillator signal, the first capacitance between the first input port and the third capacitance and the second capacitance between the second input port and the third capacitance. An output port is connected to terminals of the third capacitance.
REFERENCES:
patent: 4186436 (1980-01-01), Ishiwatari
patent: 5397931 (1995-03-01), Bayer
patent: 5475337 (1995-12-01), Tatsumi
patent: 5550728 (1996-08-01), Ellis
patent: 5574457 (1996-11-01), Garrity et al.
patent: 6064871 (2000-05-01), Leung
patent: 6091940 (2000-07-01), Sorrells et al.
patent: 6198645 (2001-03-01), Kotowski et al.
patent: 6429632 (2002-08-01), Forbes et al.
patent: 6675003 (2004-01-01), Dubash et al.
patent: 6999747 (2006-02-01), Su
patent: 7010286 (2006-03-01), Sorrells et al.
patent: 7039382 (2006-05-01), Shu
patent: 7062248 (2006-06-01), Kuiri
patent: 7212588 (2007-05-01), Wong et al
patent: 7218899 (2007-05-01), Sorrells et al.
patent: 7248850 (2007-07-01), Shen
patent: 7336938 (2008-02-01), Wong
patent: 7460844 (2008-12-01), Molnar et al.
patent: 2005/0176396 (2005-08-01), Miyahi
patent: 2007/0275684 (2007-11-01), Harada et al.
patent: 2008/0001659 (2008-01-01), Vaisanen
patent: 470 298 (1994-01-01), None
Jan Crols, et al., “A 1.5 GHz Highly Linear CMOS Downconversion Mixer,” IEEE Journal of Solid-State Circuits, vol. 30, No. 7, Jul. 1995, pp. 736-742, IEEE, USA.
International Search Report, International Patent Application No. PCT/FI2007/050389, Date of Completion: Oct. 17, 2007, Date of Mailing: Oct. 26, 2007, pp. 1-4.
International Search Report, International Patent Application No. PCT/FI2007/050390, Date of Completion: Sep. 21, 2007, Date of Mailing: Oct. 24, 2007, pp. 1-2.
Jackson Blane J
Nokia Corporation
Squire Sanders & Dempsey LLP
LandOfFree
Multi-function passive frequency mixer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-function passive frequency mixer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-function passive frequency mixer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4206269