Quarter duty cycle pulse generator for interleaved switching...

Pulse or digital communications – Transmitters – Angle modulation

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S299000, C375S295000, C375S298000, C375S296000, C375S355000, C455S118000, C455S318000, C455S313000, C329S300000, C329S304000

Reexamination Certificate

active

08077803

ABSTRACT:
An integrated transmit circuit includes a voltage controlled oscillator (702) for generating an input frequency signal (e.g., VCO) that is provided to a divide by two quadrature generator circuit (706) which generates therefrom in-phase and quadrature clocking signals (I, IB, Q, QB) that are applied to control a plurality of transmission gates (711-718) configured in a matched switching topology (710) so as to selectively pass pulses from the input frequency signal, thereby generating interleaved LO pulses (Ø1, Ø1B, . . . Ø4, Ø4B). By applying the interleaved LO pulses to control the transmission gates (26, 28, 30, 32, 34, 36, 38, and40) in the upmixer (720), the +I, −I, +Q, −Q input signals are interleaved over a plurality of phases of a carrier period to produce differential outputs (42, 44).

REFERENCES:
patent: 7085549 (2006-08-01), Peterson et al.
patent: 2002/0118773 (2002-08-01), Minasi et al.
patent: 2004/0137862 (2004-07-01), Tanaka et al.
patent: 2004/0198297 (2004-10-01), Oh et al.
patent: 2005/0078766 (2005-04-01), Simon
patent: 2006/0154625 (2006-07-01), Malone et al.
patent: 2007/0201581 (2007-08-01), Wagh et al.
patent: 2007/0279109 (2007-12-01), Kirschenmann
patent: 2008/0100387 (2008-05-01), Chen et al.
patent: 2008/0284487 (2008-11-01), Pullela et al.
patent: 2009/0068975 (2009-03-01), Luong et al.
patent: 2009/0174459 (2009-07-01), Cicalini

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Quarter duty cycle pulse generator for interleaved switching... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quarter duty cycle pulse generator for interleaved switching..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quarter duty cycle pulse generator for interleaved switching... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4254749

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.