Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Delta-sigma modulator and its application to switching amplification circuit










Image Number 15 for United States Patent #7248193.

A loop delay control circuit is provided between a comparator and a power switch stage. When the amplitude of an input signal is especially high, the loop delay control circuit secures an oscillation threshold value by setting a delay amount at a low value. On the other hand, when the amplitude of the input signal is not so high, the loop delay control circuit reduces an average switching rate by increasing the delay amount, but does not reduce the oscillation threshold value. This makes it possible to provide a delta-sigma modulator allowing realization of both (i) a high oscillation threshold value, i.e., high output power, and (ii) high power efficiency.








 
 
  Recently Added Patents
X-ray imaging
DKK1 oncogene as therapeutic target for cancer and a diagnosing marker
Light emitting device and electronic device
Storage system with LU-setting function
Compositions and methods for inhibition of MMP13:MMP-substrate interactions
Plural component proportioner
Idle stop and go system and method for controlling thereof
  Randomly Featured Patents
Engagement device particularly for toothed bands for sports shoes
Mounting structure of shaft to be tested on a balancer
Continuous casting of foamed bulk amorphous alloys
Broadband spectroscopic rotating compensator ellipsometer
Tunneling signaling method and apparatus
Conductive molding composition and discs therefrom
Cervical massaging device
Drum washing machine
Sheet stacking machine
Selectively rotatable and torsionally flexible aerodynamic control apparatus