Transmitter apparatus and method using polar modulation with...

Details Transmitter apparatus and method using polar modulation with... Transmitter apparatus and method using polar modulation with...

2004-07-21

2008-05-27

Urban, Edward F. (Department: 2618)

Telecommunications

Transmitter

With feedback of modulated output signal

C455S127100, C455S114200, C455S114300, C455S125000, C455S115100, C375S296000, C375S297000, C330S149000

Reexamination Certificate

active

07379715

ABSTRACT:
A transmitting apparatus includes a polar signal producing circuit which produces signals corresponding to the amplitude and the phase of a transmitting modulated wave from an input signal and multiplies the amplitude signal by the phase signal by a multiplying circuit to amplitude modulate a phase-modulated wave to produce a transmitting modulated wave and radiates this transmitting modulated wave as radio wave from an antenna. An amplitude/phase detecting circuit detects an amplitude signal and a phase signal from the input of the multiplying circuit and the input of a phase-modulated signal producing circuit. A delay difference computing circuit computes a correlation function between the amplitude signal produced by the polar signal producing circuit and the amplitude signal detected by the amplitude/phase detecting circuit and a correlation function between the phase signal produced by the polar signal producing means and the phase signal detected by the amplitude/phase detecting means, and computes a delay difference between the amplitude signal and the phase signal from maximum values of the respective correlation functions. Then, a timing adjusting circuit adjusts the delay time between the amplitude signal and the phase signal on the base of the computed delay difference.

REFERENCES:
patent: 6043707 (2000-03-01), Budnik
patent: 6246286 (2001-06-01), Persson
patent: RE37407 (2001-10-01), Eisenberg et al.
patent: 6366177 (2002-04-01), McCune et al.
patent: 6377784 (2002-04-01), McCune
patent: 6449465 (2002-09-01), Gailus et al.
patent: 6834084 (2004-12-01), Hietala
patent: 6931240 (2005-08-01), Hunton
patent: 6937668 (2005-08-01), Sridharan et al.
patent: 7010280 (2006-03-01), Wilson
patent: 7058425 (2006-06-01), Takakusaki
patent: 7072420 (2006-07-01), Persson
patent: 7072626 (2006-07-01), Hadjichristos
patent: 7212791 (2007-05-01), Arayashiki
patent: 7254195 (2007-08-01), Servilio et al.
patent: 2002/0079964 (2002-06-01), Miyatani
patent: 2002/0193085 (2002-12-01), Mathe et al.
patent: 2002/0196864 (2002-12-01), Booth et al.
patent: 2003/0118143 (2003-06-01), Bellaouar et al.
patent: 2003/0215026 (2003-11-01), Hietala
patent: 2004/0219891 (2004-11-01), Hadjichristos
patent: 2005/0001674 (2005-01-01), Saed et al.
patent: 2005/0153670 (2005-07-01), Shi et al.
patent: 2007/0053472 (2007-03-01), Feher
patent: 5-175743 (1993-07-01), None
patent: 6-54877 (1994-07-01), None
patent: 7-264082 (1995-10-01), None
patent: 8-70331 (1996-03-01), None
patent: 9-298553 (1997-11-01), None
patent: 9-307525 (1997-11-01), None
patent: 2001-86094 (2001-03-01), None
patent: 2001-189685 (2001-07-01), None
patent: 2001-203772 (2001-07-01), None
patent: 2002-76785 (2002-03-01), None
patent: 2002-223124 (2002-08-01), None
patent: 2002-232325 (2002-08-01), None
patent: 2002-530992 (2002-09-01), None
patent: 2003-179514 (2003-06-01), None

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