US 7,558,334 B2
Enhanced hybrid class-S modulator
Earl W. McCune, Santa Clara, Calif. (US); and Bojan Silic, San Jose, Calif. (US)
Assigned to Panasonic Corporation, Osaka (Japan)
Filed on Sep. 01, 2006, as Appl. No. 11/515,250.
Prior Publication US 2008/0074207 A1, Mar. 27, 2008
Int. Cl. H04K 1/02 (2006.01)
U.S. Cl. 375—297  [332/159; 332/149] 48 Claims
OG exemplary drawing
 
43. A modulator circuit, comprising:
a modulator having an input configured to receive an approximated input signal and operable to modulate a power supply signal according to the approximated input signal to generate a modulated power supply signal at an output of said modulator; and
a correction circuit having an output that is directly or capacitively coupled to the output of said modulator, said correction circuit operable to reduce an error in the modulated power supply signal caused by modulating the power supply signal according to said approximated input signal.