Patent ID: 6949978

Claim:
An efficient amplifier comprising: means for amplifying an input signal via a high-speed switch and providing an amplified signal in response thereto and, means for filtering said amplified signal via common mode rejection and providing an output signal in response thereto; wherein said means for filtering includes first means for separating an input signal into plural intermediate signals, and wherein said means for amplifying includes second means for amplifying said plural intermediate signals via one or more high-speed switches and providing plural amplified signals in response thereto, wherein said means for filtering further includes third means for employing common mode rejection to filter said plural amplified signals, yielding a single output signal in response thereto, and wherein said first means includes a broadband input balun that receives said input signal and provides a first intermediate signal and a second intermediate signal as output in response thereto, said broadband input balun sufficient to impart approximately 180 degrees of relative signal phase rotation between said first intermediate signal and said second intermediate signal so that said intermediate signals are approximately 180 degrees out of phase.