Pulse or digital communications – Transmitters
Reexamination Certificate
2003-04-22
2008-11-04
Vo, Don N (Department: 2611)
Pulse or digital communications
Transmitters
Reexamination Certificate
active
07447272
ABSTRACT:
A method includes providing an in-phase signal and a quadrature-phase signal (I/Q signals), processing the in-phase and quadrature phase signals to produce a magnitude signal and a phase signal, conditioning the phase signal to produce a conditioned phase signal, filtering the magnitude signal to produce a filtered magnitude signal, and amplifying the conditioned phase signal as a function of the filtered magnitude signal to produce a polar modulated signal. An apparatus includes a pair of I/Q channels, an I/Q to magnitude/phase circuit coupled to the pair of I/Q channels, a magnitude conditioning circuit coupled to the I/Q to magnitude/phase circuit; the magnitude conditioning circuit embodying a magnitude filter; a phase conditioning circuit coupled to the I/Q to magnitude/phase circuit, and an amplifier circuit coupled to the magnitude conditioning circuit and the phase conditioning circuit.
REFERENCES:
patent: 5847602 (1998-12-01), Su
patent: 5952895 (1999-09-01), McCune, Jr. et al.
patent: 6094101 (2000-07-01), Sander et al.
patent: 6101224 (2000-08-01), Lindoff et al.
patent: 6112071 (2000-08-01), McCune, Jr.
patent: 6140882 (2000-10-01), Sander
patent: 6198347 (2001-03-01), Sander et al.
patent: 6215355 (2001-04-01), Meck et al.
patent: 6219394 (2001-04-01), Sander
patent: 6701134 (2004-03-01), Epperson
patent: 6834084 (2004-12-01), Hietala
patent: 7020070 (2006-03-01), Lindoff
patent: 7062236 (2006-06-01), Midtgaard et al.
patent: 2003/0158729 (2003-08-01), Royle et al.
patent: 2003/0227342 (2003-12-01), Liu
patent: 2005/0074073 (2005-04-01), Yuan et al.
Heimbach, “Polarizing RF transmitters for multimode operation.”Communication Systems Design, CMP Media LLC, Oct. 2001.
McCune, “Polar Modulation: an alternative for software defined radio,”International Symposium on Advanced Radio Technologies, Boulder, CO, Mar. 6, 2002.
Freescale Semiconductor Inc.
Fulbright & Jaworski LLP
Vo Don N
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