Patent ID: 7701286
Filing Date: 2010-04-20
Classification: H03F,H03G

Abstract:
1. A multibit digital amplifier circuit comprising: an N bit digital radio frequency (RF) signal present on N different lines, one bit per line; where the N bits have an order ranging from the least significant bit (LSB) to the most significant bit (MSB); where N is an integer greater than 1; N amplifiers, one amplifier per bit, each amplifier having a signal input, a signal output and at least two power terminals for the application therebetween of an operating voltage for the amplifier; means for applying each bit to the signal input of its corresponding amplifier; and means for applying a different operating voltage to each amplifier; the applied voltage corresponding to the order of the input bit applied to the amplifier for converting its input bit to a voltage indicative of the order of the input bit.