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1. 发明授权

US06810266B1 Digitally controlled radio back-end 有权
标题翻译：数字控制无线电后端
公开(公告)号：US06810266B1
公开(公告)日：2004-10-26
申请号：US09441330
申请日：1999-11-16
申请人： Lawrence Marvin Ecklund , Gregory J. Buchwald , Stephen C. Tremmell
发明人： Lawrence Marvin Ecklund , Gregory J. Buchwald , Stephen C. Tremmell
IPC分类号： H04Q720
CPC分类号： H04B1/406
摘要： A radio circuit that includes a radio front-end for receiving a radio signal and converting the radio signal to a first intermediate frequency signal and a second intermediate frequency signal. The radio circuit also includes an analog back-end having a plurality of inputs for receiving the first intermediate frequency signal and for processing the first intermediate frequency signal in response to digital signals. Also included is a digital back-end having a plurality of inputs for receiving the second intermediate frequency signal and for processing the second intermediate frequency signal in response to the digital signals.
摘要翻译：一种无线电电路，包括用于接收无线电信号的无线电前端，并将无线电信号转换成第一中频信号和第二中频信号。无线电电路还包括具有多个输入的模拟后端，用于接收第一中频信号并响应于数字信号来处理第一中频信号。还包括具有多个输入的数字后端，用于接收第二中频信号并响应于数字信号来处理第二中频信号。

2. 发明授权

US06473606B1 Common intermediate frequency broadcast radio front end 有权
标题翻译：普通中频广播前端
公开(公告)号：US06473606B1
公开(公告)日：2002-10-29
申请号：US09441249
申请日：1999-11-16
申请人： Lawrence Marvin Ecklund , Gregory J. Buchwald , Kenneth S. Hutchinson
发明人： Lawrence Marvin Ecklund , Gregory J. Buchwald , Kenneth S. Hutchinson
IPC分类号： H04B126
CPC分类号： H04B1/006 , H04B1/005 , H04B1/28
摘要： A common intermediate frequency broadcast radio front end. The invention employs a common front end that employs a common mixer and intermediate frequency for both AM and FM radio signals. Borrowing on the inherent advantages of employing a substantially reduced intermediate frequency, when compared to the elevated intermediate frequency that is employed in many conventional systems, the invention provides for the ability to employ components whose precision is significantly relaxed and whose cost is substantially reduced. The low frequency affords the ability to use relatively cheap ceramic filters and integrated filters within the IC instead of relatively expensive crystal filters commonly employed at higher intermediate frequencies. In addition, the implementation of a common mixer for both AM and FM signals results in a savings of real estate on the silicon die used to operate certain embodiments of the invention.
摘要翻译：普通中频无线广播前端。本发明采用公共前端，其采用公共混频器和中频用于AM和FM无线电信号。借鉴采用基本上降低的中频的固有优点，与许多常规系统中使用的升高的中频相比，本发明提供了使用其精度显着放宽并且其成本显着降低的部件的能力。低频提供了在IC内使用相对便宜的陶瓷滤波器和集成滤波器的能力，而不是在较高中频通常采用的相对昂贵的晶体滤波器。另外，用于AM和FM信号的公共混频器的实现导致在用于操作本发明的某些实施例的硅芯片上节省了空间。

3. 发明授权

US06424825B1 Feedforward and feedback control in a radio 有权
标题翻译：无线电中的前馈和反馈控制
公开(公告)号：US06424825B1
公开(公告)日：2002-07-23
申请号：US09441022
申请日：1999-11-16
申请人： Lawrence Marvin Ecklund , Gregory J. Buchwald
发明人： Lawrence Marvin Ecklund , Gregory J. Buchwald
IPC分类号： H04B116
CPC分类号： H04B1/1027
摘要： A radio back-end circuit that includes a signal processing unit which receives an intermediate frequency signal containing modulated information. The radio back-end circuit processes the intermediate signal and provides an output representative of the modulated information. The radio back-end circuit includes a plurality of control registers for receiving digital information provided external to the back-end circuit. Also included is a signal optimization circuit, coupled to the plurality of registers, having an output coupled to the signal processing unit for modifying how the radio-back-end processes the intermediate frequency signal. In addition, an analog interface, coupled to the signal processing unit, is included which converts analog information from the signal processing unit to digital processing unit information.
摘要翻译：一种无线电后端电路，包括接收包含调制信息的中频信号的信号处理单元。无线电后端电路处理中间信号并提供表示调制信息的输出。无线电后端电路包括用于接收在后端电路外部提供的数字信息的多个控制寄存器。还包括耦合到多个寄存器的信号优化电路，具有耦合到信号处理单元的输出，用于修改无线电后端如何处理中频信号。此外，包括耦合到信号处理单元的模拟接口，其将来自信号处理单元的模拟信息转换为数字处理单元信息。

4. 发明授权

US06577851B1 Impulse noise blanker 有权
标题翻译：脉冲噪声消除器
公开(公告)号：US06577851B1
公开(公告)日：2003-06-10
申请号：US09441024
申请日：1999-11-16
申请人： Lawrence Marvin Ecklund , Gregory J. Buchwald
发明人： Lawrence Marvin Ecklund , Gregory J. Buchwald
IPC分类号： H04B110
CPC分类号： H03G3/345
摘要： A radio back-end integrated circuit that includes a blanking switch having a signal input which receives an IF signal, a control input, and a signal output. Also included is a demodulator having an input coupled to the output of the blanking switch, and an output. The radio back-end also has a sample and hold switch having a signal input coupled to the output of the demodulator, a control input, and an output. Combined with the switch is a noise impulse detector having an input coupled to the IF signal and an output coupled to the control inputs of the blanking switch and the sample and hold switch. A sample and hold/de-emphasis circuit has an input coupled to the output of the sample and hold switch, and an output. The sample and hold/de-emphasis circuit has a high input impedance amplifier, a resistor, and only one capacitor.
摘要翻译：一种无线电后端集成电路，包括具有接收IF信号的信号输入的消隐开关，控制输入和信号输出。还包括具有耦合到消隐开关的输出的输入和输出的解调器。无线电后端还具有采样和保持开关，其具有耦合到解调器的输出的信号输入，控制输入和输出。结合开关是具有耦合到IF信号的输入和耦合到消隐开关和采样保持开关的控制输入的输出的噪声脉冲检测器。采样和保持/去加重电路具有耦合到采样保持开关的输出和输出的输入。采样和保持/去加重电路具有高输入阻抗放大器，电阻器和仅一个电容器。

5. 发明授权

US06473605B1 Noise reduction and range control radio system 有权
标题翻译：降噪和量程控制无线电系统
公开(公告)号：US06473605B1
公开(公告)日：2002-10-29
申请号：US09440999
申请日：1999-11-16
申请人： Lawrence Marvin Ecklund , Gregory J. Buchwald
发明人： Lawrence Marvin Ecklund , Gregory J. Buchwald
IPC分类号： H04B110
CPC分类号： H03G3/3052
摘要： A radio back-end circuit that includes an integrator and a first variable voltage translator having a signal input coupled to the output of the integrator circuit. Also included is a first variable low pass filter, a second variable voltage translator, and a variable attenuator. These components of the radio back-end circuit are communicatively coupled such that noise is reduced in radio communications and signal and reception range control is improved in certain situations.
摘要翻译：一种无线电后端电路，包括积分器和具有耦合到积分器电路的输出的信号输入的第一可变电压转换器。还包括第一可变低通滤波器，第二可变电压转换器和可变衰减器。无线电后端电路的这些组件通信地耦合，使得无线电通信中的噪声减小，并且在某些情况下提高了信号和接收范围控制。

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