US 6,982,593 B2
Switching amplifier architecture
Ian Robinson, Venice, Calif. (US); and Frank Winter, San Diego, Calif. (US)
Assigned to Northrop Grumman Corporation, Los Angeles, Calif. (US)
Filed on Oct. 23, 2003, as Appl. No. 10/691,987.
Prior Publication US 2005/0088226 A1, Apr. 28, 2005
Int. Cl. H03F 3/38 (2006.01); H03G 3/20 (2006.01)
U.S. Cl. 330—10 33 Claims
OG exemplary drawing
 
1. An amplifier architecture comprising:
a switching amplifier operative to amplify an input signal;
a supply control device that varies a supply voltage of the switching amplifier between a plurality of fixed voltage supply levels based on a characteristic of the input signal relative to a threshold level; and
a binary waveform converter that converts the input signal into a binary waveform for inputting into the switching amplifier.