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1. 发明授权

US08823357B2 Radio frequency power amplifier protection system 有权
标题翻译：射频功率放大器保护系统
公开(公告)号：US08823357B2
公开(公告)日：2014-09-02
申请号：US13216876
申请日：2011-08-24
申请人： Thomas Ogle Shafer , Tony Monroe Bragg , Gary Altman
发明人： Thomas Ogle Shafer , Tony Monroe Bragg , Gary Altman
IPC分类号： G01R19/00
CPC分类号： H03F1/523 , H03F3/245 , H03F2200/435 , H03G3/3042
摘要： A radio frequency (RF) power amplifier protection system for a radio. The protection system utilizes a resistive tap connected to the drain of a power amplifier transistor and a high speed voltage detector. The protection system uses short, low-power tests pulses to determine the quality of an antenna load upon tuning the radio to an RF carrier frequency by transmitting the short test pulse. If the measured voltage value exceeds a calibrated value, the power of the RF transmitter is reduced for subsequent operation or the RF transmitter is shut down completely. The invention also includes a system and method for detecting when an antenna is disconnected from a radio using an low frequency AC signal to measure the resistance of an antenna connected to an RF transmitter.
摘要翻译：射频（RF）功率放大器保护系统。保护系统利用连接到功率放大器晶体管和高速电压检测器的漏极的电阻抽头。保护系统使用短的低功率测试脉冲来通过发送短测试脉冲将无线电调谐到RF载波频率来确定天线负载的质量。如果测量的电压值超过校准值，则RF发射器的功率会降低，以便后续操作或RF发射器完全关闭。本发明还包括一种用于检测天线何时使用低频AC信号与无线电断开连接以测量连接到RF发射机的天线的电阻的系统和方法。

2. 发明申请

US20130049735A1 RADIO FREQUENCY POWER AMPLIFIER PROTECTION SYSTEM 有权
标题翻译：无线电频率放大器保护系统
公开(公告)号：US20130049735A1
公开(公告)日：2013-02-28
申请号：US13216876
申请日：2011-08-24
申请人： Thomas Ogle Shafer , Tony Monroe Bragg , Gary Altman
发明人： Thomas Ogle Shafer , Tony Monroe Bragg , Gary Altman
IPC分类号： G01R19/00
CPC分类号： H03F1/523 , H03F3/245 , H03F2200/435 , H03G3/3042
摘要： A radio frequency (RF) power amplifier protection system for a radio. The protection system utilizes a resistive tap connected to the drain of a power amplifier transistor and a high speed voltage detector. The protection system uses short, low-power tests pulses to determine the quality of an antenna load upon tuning the radio to an RF carrier frequency by transmitting the short test pulse. If the measured voltage value exceeds a calibrated value, the power of the RF transmitter is reduced for subsequent operation or the RF transmitter is shut down completely. The invention also includes a system and method for detecting when an antenna is disconnected from a radio using an low frequency AC signal to measure the resistance of an antenna connected to an RF transmitter.
摘要翻译：射频（RF）功率放大器保护系统。保护系统利用连接到功率放大器晶体管和高速电压检测器的漏极的电阻抽头。保护系统使用短的低功率测试脉冲来通过发送短测试脉冲将无线电调谐到RF载波频率来确定天线负载的质量。如果测量的电压值超过校准值，则RF发射器的功率会降低，以便后续操作或RF发射器完全关闭。本发明还包括一种用于检测天线何时使用低频AC信号与无线电断开连接以测量连接到RF发射机的天线的电阻的系统和方法。

3. 发明申请

US20130049854A1 POWER EFFICIENT RADIO FREQUENCY TRANSMITTER 有权
标题翻译：功率有效无线电频率发射机
公开(公告)号：US20130049854A1
公开(公告)日：2013-02-28
申请号：US13216861
申请日：2011-08-24
申请人： Thomas Ogle Shafer
发明人： Thomas Ogle Shafer
IPC分类号： G01R19/00
CPC分类号： H03F3/24 , H03F1/3247 , H03F1/3294 , H03F1/34 , H03F3/195 , H03F2200/411 , H04B1/0475 , H04B2001/0433
摘要： A power efficient, small-packaged radio frequency (RF) transmitter for use in avionics applications. The RF transmitter utilizes Cartesian feedback to operate a power amplifier with Class AB biasing and efficiency, while delivering Class A biasing performance. The RF transmitter includes interstage pads and high pass filters specially configured to meet demanding requirements for both adjacent channel power (ACP) limits and wideband spurious energy limits. The RF transmitter is much smaller in size and dissipates less DC power and heat than previous RF transmitters used in avionics applications.
摘要翻译：一种功率高，小型封装的射频（RF）发射机，用于航空电子应用。 RF发射机利用笛卡尔反馈来操作具有AB类偏置和效率的功率放大器，同时提供A类偏置性能。 RF发射器包括级间焊盘和高通滤波器，专门配置为满足对相邻信道功率（ACP）极限和宽带杂散能量限制的苛刻要求。射频发射器的尺寸要小得多，并且比以前在航空电子应用中使用的RF发射器消耗更少的直流功率和热量。

4. 发明授权

US08670730B2 Power efficient radio frequency transmitter 有权
标题翻译：功率射频发射机
公开(公告)号：US08670730B2
公开(公告)日：2014-03-11
申请号：US13216861
申请日：2011-08-24
申请人： Thomas Ogle Shafer
发明人： Thomas Ogle Shafer
IPC分类号： H04B1/04 , H04K1/02 , H03G3/20
CPC分类号： H03F3/24 , H03F1/3247 , H03F1/3294 , H03F1/34 , H03F3/195 , H03F2200/411 , H04B1/0475 , H04B2001/0433
摘要： A power efficient, small-packaged radio frequency (RF) transmitter for use in avionics applications. The RF transmitter utilizes Cartesian feedback to operate a power amplifier with Class AB biasing and efficiency, while delivering Class A biasing performance. The RF transmitter includes interstage pads and high pass filters specially configured to meet demanding requirements for both adjacent channel power (ACP) limits and wideband spurious energy limits. The RF transmitter is much smaller in size and dissipates less DC power and heat than previous RF transmitters used in avionics applications.
摘要翻译：一种功率高，小型封装的射频（RF）发射机，用于航空电子应用。 RF发射机利用笛卡尔反馈来操作具有AB类偏置和效率的功率放大器，同时提供A类偏置性能。 RF发射器包括级间焊盘和高通滤波器，专门配置为满足对相邻信道功率（ACP）极限和宽带杂散能量限制的苛刻要求。射频发射器的尺寸要小得多，并且比以前在航空电子应用中使用的射频发射器消耗更少的直流功率和热量。

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