Polar modulator arrangement and polar modulation method

Details Polar modulator arrangement and polar modulation method Polar modulator arrangement and polar modulation method

2007-06-22

2009-06-09

Tran, Anh Q (Department: 2819)

Modulators

Phase modulator

Including amplitude modulator

C332S144000, C332S146000, C332S159000

Reexamination Certificate

active

07545232

ABSTRACT:
A polar modulator arrangement has a first and a second node to receive a digital signal with a first and a second component corresponding to a digital amplitude component and a digital phase component. A digital interpolation filter generates an interpolated first component by interpolating and filtering the first component. A polar modulated radio frequency signal is generated by a combination element as a function of the interpolated first component and the second component.

REFERENCES:
patent: 7184951 (2007-02-01), Royle et al.
patent: 2007/0189431 (2007-08-01), Waheed et al.
patent: 2008/0219331 (2008-09-01), Liang et al.
“Digital-IF WCDMA Handset Transmitter IC in 0.25-μm SiGe BiCMOS”, Vincent W. Leung, Lawrence E. Larson and Prasad S. Gudem, IEEE Journal of Solid-Stage Circuits, vol. 39, No. 12, Dec. 2004, pp. 2215-2225.

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