公开(公告)号：US09397621B2

公开(公告)日：2016-07-19

申请号：US14447452

申请日：2014-07-30

Applicant: Eridan Communications, Inc.

Inventor： Earl W McCune, Jr.

IPC: H03F3/217 ,  H03F3/193 ,  H03F1/30 ,  H03F1/32 ,  H03F3/45 ,  H03F1/02

CPC classification number: H03F3/2171 ,  H03F1/0283 ,  H03F1/301 ,  H03F1/3205 ,  H03F3/193 ,  H03F3/195 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45381 ,  H03F2200/451 ,  H03F2203/45112 ,  H03G1/0029

Abstract: A switch-mode RFPA driver includes first and second field-effect transistors (FETs) arranged in a totem-pole-like configuration. The switch-mode RFPA driver operates to generate a switch-mode RFPA drive signal having a generally square-wave-like waveform from an input RF signal having a generally sinusoidal-like waveform. To maximize high-frequency operation and avoid distorting the switch-mode RFPA drive signal, the switch-mode RFPA driver is designed so that its output can be connected directly to the input of the switch-mode RFPA to be driven, i.e., without using or requiring the use of an AC coupling capacitor. The first and second FETs of the switch-mode RFPA driver are designed and configured to limit and control the upper and lower magnitude levels of the switch-mode RFPA drive signal to levels suitable for switching the switch-mode RFPA directly, obviating any need for DC biasing at the input of the switch-mode RFPA.

Abstract translation: 开关模式RFPA驱动器包括以图腾柱状配置布置的第一和第二场效应晶体管（FET）。 开关模式RFPA驱动器用于从具有大致正弦波状波形的输入RF信号产生具有大致方波形波形的开关模式RFPA驱动信号。 为了最大化高频操作并避免开关模式RFPA驱动信号失真，开关模式RFPA驱动器被设计成使得其输出可以直接连接到要驱动的开关模式RFPA的输入端，即不使用 或需要使用交流耦合电容器。 开关模式RFPA驱动器的第一和第二FET被设计和配置为将开关模式RFPA驱动信号的上限和下限幅度电平限制和控制到适合于直接切换开关模式RFPA的电平，从而避免了 直流偏置在开关模式RFPA的输入端。

公开(公告)号：US10680563B2

公开(公告)日：2020-06-09

申请号：US15985921

申请日：2018-05-22

Applicant: Eridan Communications, Inc.

Inventor： Earl W McCune, Jr. ,  Quentin Diduck

IPC: H03F3/193 ,  H03F3/217 ,  H03F3/45 ,  H02M3/325 ,  H02M1/32 ,  H02M1/36 ,  H02M3/335 ,  H02M3/156 ,  H03F1/02

Abstract: A multi-stage radio frequency power amplifier (RFPA) includes an output stage SMPA and a driver stage SMPA. As the multi-stage RFPA operates, the magnitude of an RF switch drive signal generated by the driver stage SMPA is dynamically minimized based on I-V characteristic curves of the output stage SMPA's power transistor and the output stage SMPA's dynamically changing load line. By constraining the magnitude of the RF switch drive signal as the multi-stage RFPA operates, VGS feedthrough of the RF switch drive signal is minimized, to the extent possible. Amplitude distortion and phase distortion in the RF output that might occur due to unconstrained VGS feedthrough, particularly at low output RF power levels, are therefore avoided. Operating all stages of the multi-stage RFPA in switch mode also results in high energy efficiency and an output RF spectrum with very low wideband noise (WBN).

公开(公告)号：US09985593B2

公开(公告)日：2018-05-29

申请号：US14919478

申请日：2015-10-21

Applicant: Eridan Communications, Inc.

Inventor： Earl W McCune, Jr.

IPC: H03F1/30 ,  H03F1/32 ,  H03F3/193 ,  H03F3/217 ,  H03F3/45 ,  H03F1/02 ,  H03F3/195 ,  H03G1/00

CPC classification number: H03F3/2171 ,  H03F1/0283 ,  H03F1/301 ,  H03F1/3205 ,  H03F3/193 ,  H03F3/195 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45381 ,  H03F2200/451 ,  H03F2203/45112 ,  H03G1/0029

Abstract: A switch-mode RFPA driver includes first and second field-effect transistors (FETs) arranged in a totem-pole-like configuration. The switch-mode RFPA driver operates to generate a switch-mode RFPA drive signal having a generally square-wave-like waveform from an input RF signal having a generally sinusoidal-like waveform. According to one embodiment of the invention, to maximize high-frequency operation and avoid distorting the switch-mode RFPA drive signal, the switch-mode RFPA driver is designed so that its output can be connected directly to the input of the switch-mode RFPA to be driven, i.e., without using or requiring the use of an AC coupling capacitor. The first and second FETs of the switch-mode RFPA driver are designed and configured to limit and control the upper and lower magnitude levels of the switch-mode RFPA drive signal to levels suitable for switching the switch-mode RFPA directly, obviating any need for DC biasing at the input of the switch-mode RFPA.