公开(公告)号：US20160197589A1

公开(公告)日：2016-07-07

申请号：US15068348

申请日：2016-03-11

Applicant: FREESCALE SEMICONDUCTOR INC.

Inventor： JOSEPH STAUDINGER ,  MARUF AHMED ,  HUSSAIN H. LADHANI

IPC: H03F3/217 ,  H03F3/193 ,  H03F1/56

CPC classification number: H03F3/2171 ,  H03F1/0205 ,  H03F1/086 ,  H03F1/565 ,  H03F3/193 ,  H03F3/601 ,  H03F2200/267 ,  H03F2200/333 ,  H03F2200/387 ,  H03F2200/391 ,  H03F2200/451

Abstract: The embodiments described herein provide inverse class F (class F−1) amplifiers. In general, the inverse class F amplifiers are implemented with a transistor, an output inductance and a transmission line configured to approximate inverse class F voltage and current output waveforms by compensating the effects of the transistor's intrinsic output capacitance for some even harmonic signals while providing a low impedance for some odd harmonic signals. Specifically, the transistor is configured with the output inductance and transmission line to form a parallel LC circuit that resonates at the second harmonic frequency. The parallel LC circuit effectively creates high impedance for the second harmonic signals, thus blocking the capacitive reactance path to ground for those harmonic signals that the intrinsic output capacitance would otherwise provide. This facilitates the operation of the amplifier as an effective, high efficiency, inverse class F amplifier.

Abstract translation: 这里描述的实施例提供反向F级（F-1类）放大器。 通常，反相F放大器通过补偿晶体管的固有输出电容对某些偶次谐波信号的影响而配置为通过晶体管，输出电感和传输线来实现，从而近似反向F类电压和电流输出波形，同时提供一个 一些奇次谐波信号的低阻抗。 具体地，晶体管配置有输出电感和传输线，以形成以二次谐波频率谐振的并联LC电路。 并联LC电路有效地为二次谐波信号产生高阻抗，从而阻止本征输出电容另有提供的那些谐波信号的接地电容电抗。 这有助于放大器作为有效的，高效率的F类放大器的反相运算。