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公开(公告)号：US20170054492A1
公开(公告)日：2017-02-23
申请号：US15263134
申请日：2016-09-12
发明人： ERIK BUEHLER , DAMON VAN BUREN , PAUL RUTT
CPC分类号： H04B7/18515 , H04B1/0039 , H04B1/0042 , H04B1/0046 , H04B1/44 , H04B7/08 , H04B7/1851 , H04B7/212
摘要： An integrated analog to digital converting and digital to analog converting (ADDA) RF transceiver for satellite applications, configured to replace conventional analog RF down and up conversion circuitry. The ADDA RF transceiver includes one of more ADCs, DSPs, and DACs, all on a single ASIC. Further, the circuitry is to be radiation tolerant for high availability and reliability in the ionizing radiation environment present in the space environment.
摘要翻译： 用于卫星应用的集成模数转换和数模转换（ADDA）RF收发器，配置为取代常规模拟RF下降转换电路。 ADDA RF收发器包括一个更多的ADC，DSP和DAC，都在单个ASIC上。 此外，该电路对于在空间环境中存在的电离辐射环境中的高可用性和可靠性是耐辐射的。
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62.发明授权Channel state information (CSI) estimation and applications for in-band on-channel radio receivers 有权信道状态信息（CSI）估计和带内在线无线电接收机的应用公开(公告)号：US09106472B1
公开(公告)日：2015-08-11
申请号：US14316852
申请日：2014-06-27
发明人： Brian W. Kroeger , Paul J. Peyla
CPC分类号： H04L25/06 , H04B1/0039 , H04B1/10 , H04L25/03
摘要： A method is provided for estimating channel state information in an in-band on-channel radio signal including a plurality of digitally modulated reference subcarriers. The method includes: receiving symbols transmitted on the reference subcarriers; combining the reference subcarrier symbols with a known reference sequence conjugate to produce a plurality of samples; median filtering the samples to produce filtered samples; smoothing the samples for each of the reference subcarriers over the plurality of reference subcarriers to produce a complex channel gain estimate for each of the subcarriers; and using a bias correction function to compensate for estimation bias error in the complex channel gain estimate due to the median filtering. Receivers that implement the method are also provided.
摘要翻译： 提供了一种用于估计包括多个数字调制参考子载波的带内同信道无线电信号中的信道状态信息的方法。 该方法包括：接收在参考子载波上发送的符号; 将参考子载波符号与已知参考序列缀合组合以产生多个采样; 对样本进行中值滤波以产生滤波样本; 在多个参考子载波上平滑每个参考子载波的样本以产生每个子载波的复信道增益估计; 并且使用偏置校正函数来补偿由于中值滤波导致的复信道增益估计中的估计偏差误差。 还提供了实现该方法的接收器。
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公开(公告)号：US08498601B2
公开(公告)日：2013-07-30
申请号：US13486157
申请日：2012-06-01
CPC分类号： H03D5/00 , H04B1/0039
摘要： A polar receiver using injection-locking technique includes an antenna, a first filter, a first voltage-controlled oscillator, a first mixer, a frequency discriminator, a second filter, a third filter, a first analog-digital converter, a second analog-digital converter and a digital signal processing unit. Mentioned polar receiver enables to separate an envelope signal and a frequency-modulated signal from a radio frequency signal received from the antenna via the injection locking technique of the first voltage-controlled oscillator and the frequency discriminator. The envelope component and the frequency-modulated component can be digitally processed by the digital signal processing unit to accomplish polar demodulation.
摘要翻译： 使用注入锁定技术的极地接收机包括天线，第一滤波器，第一压控振荡器，第一混频器，鉴频器，第二滤波器，第三滤波器，第一模数转换器，第二模拟数字转换器， 数字转换器和数字信号处理单元。 所提到的极地接收机使得能够通过第一压控振荡器和鉴频器的注入锁定技术从包含从天线接收的射频信号中分离包络信号和频率调制信号。 信号分量和调频分量可以由数字信号处理单元进行数字处理，以实现极性解调。
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公开(公告)号：US20130143509A1
公开(公告)日：2013-06-06
申请号：US13486157
申请日：2012-06-01
IPC分类号： H04B1/06
CPC分类号： H03D5/00 , H04B1/0039
摘要： A polar receiver using injection-locking technique includes an antenna, a first filter, a first voltage-controlled oscillator, a first mixer, a frequency discriminator, a second filter, a third filter, a first analog-digital converter, a second analog-digital converter and a digital signal processing unit. Mentioned polar receiver enables to separate an envelope signal and a frequency-modulated signal from a radio frequency signal received from the antenna via the injection locking technique of the first voltage-controlled oscillator and the frequency discriminator. The envelope component and the frequency-modulated component can be digitally processed by the digital signal processing unit to accomplish polar demodulation.
摘要翻译： 使用注入锁定技术的极地接收机包括天线，第一滤波器，第一压控振荡器，第一混频器，鉴频器，第二滤波器，第三滤波器，第一模数转换器，第二模拟数字转换器， 数字转换器和数字信号处理单元。 所提到的极地接收机使得能够通过第一压控振荡器和鉴频器的注入锁定技术从包含从天线接收的射频信号中分离包络信号和频率调制信号。 信号分量和调频分量可以由数字信号处理单元进行数字处理，以实现极性解调。
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公开(公告)号：US20100118924A1
公开(公告)日：2010-05-13
申请号：US12269003
申请日：2008-11-11
申请人： Debajyoti Pal
发明人： Debajyoti Pal
IPC分类号： H04B1/38
CPC分类号： H04B1/0039 , H04B1/0092 , H04B1/30
摘要： A receiver uses a wideband intermediate frequency (IF) in the analog domain and performs low IF down-conversion in the digital domain, using low-power, high-speed, high resolution analog-to-digital converters. The receiver can be integrated into an integrated circuit as one of several receivers. Such an integrated circuit may include multiple transmitters using adaptive non-linear modeling pre-distortion. The non-linear modeling may include memory. Imbalance in intermediate frequency in-phase and quadrature signals may be corrected in the digital domains. DC offsets in the intermediate signal may be corrected in both analog and digital domains. In one instance, the receiver provides a feedback receiver for the adaptive pre-distorter in a transmitter on the integrated circuit.
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公开(公告)号：US07653159B2
公开(公告)日：2010-01-26
申请号：US12360464
申请日：2009-01-27
IPC分类号： H04L27/08
CPC分类号： H04B1/0007 , H03G3/3052 , H04B1/0003 , H04B1/0039 , H04B1/28
摘要： An Automatic Gain Control (AGC) circuit as used in a digital receiver that utilizes a main loop filter that is of a relatively wide bandwidth. A pre-filter, wideband variance is determined from the input digital signal, and a post-filter, narrowband variance is also determined. The wideband and narrowband variances are then compared to determine if the wideband signal power indicates a variance level that is too great to permit normal loop operation. By reapplying this difference in the power levels to the filter output as needed, such as by a scaling operation, the loss in dynamic range is effectively recovered. In a preferred embodiment, an adjustable gain input amplifier feeds an intermediate frequency (IF) signal to an analog-to-digital converter (ADC). The digitized IF signal is then down-converted to a baseband frequency and subjected to digital filtering. A narrowband sample variance (PN) of the digitally filtered (narrowband) data is then determined. A wideband sample variance (PW) is also taken from the raw ADC output data over the same period as the time period used for PN. In the presence of out-of-band signal components, PW will be quite different from PN. This difference indicates a desired proportional difference in a control voltage or a gain backoff amount.
摘要翻译： 一种在数字接收机中使用的自动增益控制（AGC）电路，其利用具有较宽带宽的主环路滤波器。 从输入数字信号确定预滤波器，宽带方差，并且还确定后滤波器，窄带方差。 然后比较宽带和窄带方差，以确定宽带信号功率是否指示太大而不能允许正常环路操作的方差水平。 通过根据需要将功率电平的这种差异重新应用于滤波器输出，例如通过缩放操作，动态范围的损失被有效地恢复。 在优选实施例中，可调增益输入放大器将中频（IF）信号馈送到模数转换器（ADC）。 然后将数字化的IF信号下变频到基带频率并进行数字滤波。 然后确定数字滤波（窄带）数据的窄带样本方差（PN）。 在与PN使用的时间段相同的周期内，也可以从原始ADC输出数据获取宽带采样方差（PW）。 在存在带外信号分量的情况下，PW将与PN完全不同。 该差异表示控制电压或增益回退量的期望比例差。
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公开(公告)号：US20090135971A1
公开(公告)日：2009-05-28
申请号：US12360464
申请日：2009-01-27
CPC分类号： H04B1/0007 , H03G3/3052 , H04B1/0003 , H04B1/0039 , H04B1/28
摘要： An Automatic Gain Control (AGC) circuit as used in a digital receiver that utilizes a main loop filter that is of a relatively wide bandwidth. A pre-filter, wideband variance is determined from the input digital signal, and a post-filter, narrowband variance is also determined. The wideband and narrowband variances are then compared to determine if the wideband signal power indicates a variance level that is too great to permit normal loop operation. By reapplying this difference in the power levels to the filter output as needed, such as by a scaling operation, the loss in dynamic range is effectively recovered. In a preferred embodiment, an adjustable gain input amplifier feeds an intermediate frequency (IF) signal to an analog-to-digital converter (ADC). The digitized IF signal is then down-converted to a baseband frequency and subjected to digital filtering. A narrowband sample variance (PN) of the digitally filtered (narrowband) data is then determined. A wideband sample variance (PW) is also taken from the raw ADC output data over the same period as the time period used for PN. In the presence of out-of-band signal components, PW will be quite different from PN. This difference indicates a desired proportional difference in a control voltage or a gain backoff amount.
摘要翻译： 一种在数字接收机中使用的自动增益控制（AGC）电路，其利用具有较宽带宽的主环路滤波器。 从输入数字信号确定预滤波器，宽带方差，并且还确定后滤波器，窄带方差。 然后比较宽带和窄带方差，以确定宽带信号功率是否指示太大而不能允许正常环路操作的方差水平。 通过根据需要将功率电平的这种差异重新应用于滤波器输出，例如通过缩放操作，动态范围的损失被有效地恢复。 在优选实施例中，可调增益输入放大器将中频（IF）信号馈送到模数转换器（ADC）。 然后将数字化的IF信号下变频到基带频率并进行数字滤波。 然后确定数字滤波（窄带）数据的窄带样本方差（PN）。 在与PN使用的时间段相同的周期内，也可以从原始ADC输出数据获取宽带采样方差（PW）。 在存在带外信号分量的情况下，PW将与PN完全不同。 该差异表示控制电压或增益回退量的期望比例差。
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公开(公告)号：US20090117870A1
公开(公告)日：2009-05-07
申请号：US12266346
申请日：2008-11-06
申请人： Takeshi Ikeda , Hiroshi Miyagi
发明人： Takeshi Ikeda , Hiroshi Miyagi
IPC分类号： H04B1/26
CPC分类号： H04B1/28 , H04B1/0039 , H04L27/0014 , H04L2027/0028 , H04L2027/003 , H04L2027/0055
摘要： There are provided an IF signal generating portion 10 for generating an intermediate frequency signal, and an amplitude error correcting portion 15 for setting a gain of an amplitude correcting portion 12 to eliminate an amplitude error between a signal processed by a first signal processing system for an I signal and a signal processed by a second signal processing system for a Q signal when the intermediate frequency signal generated by the IF signal generating portion 10 is selected by switches 7I and 7Q. By correcting an amplitude error using the intermediate frequency signal generated by the IF signal generating portion 10 in place of an intermediate frequency signal generated by processing an actual received signal, it is possible to accurately detect the amplitude error without an influence of a phase error by using a signal which does not include a phase error caused by a variation in elements of mixers 4I and 4Q and a 90° phase shifter 6 themselves.
摘要翻译： 提供了用于产生中频信号的IF信号产生部分10和用于设置幅度校正部分12的增益的幅度误差校正部分15，以消除由第一信号处理系统处理的信号之间的振幅误差， 当由开关7I和7Q选择由IF信号产生部分10产生的中频信号时，I信号和由Q信号的第二信号处理系统处理的信号。 通过使用由IF信号产生部分10产生的中频信号代替通过处理实际接收信号而产生的中频信号来校正振幅误差，可以精确地检测振幅误差而不受相位误差的影响 使用不包括由混频器4I和4Q和90°移相器6本身的元件变化引起的相位误差的信号。
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69.发明申请RADIO RECEIVER CIRCUIT, RADIO TRANSCEIVER CIRCUIT AND CALIBRATION METHOD THEREOF 有权无线电接收电路，无线电收发器电路及其校准方法公开(公告)号：US20090017776A1
公开(公告)日：2009-01-15
申请号：US12169756
申请日：2008-07-09
申请人： TAKASHI OSHIMA , Taizo Yamawaki
发明人： TAKASHI OSHIMA , Taizo Yamawaki
CPC分类号： H04B1/0039
摘要： Conventional digital calibration type analog-to-digital converters cannot converge calibration within an preamble period of a packet signal. An analog-to-digital converter is subjected to digital calibration using a beacon signal, a polling signal, or another user signal or a signal applied from a transceiver side to a receiver side. Some or all of circuits are brought into a sleep mode in a period except data reception and the analog-to-digital converter calibration such that a signal monitor unit detects another signal to activate the circuit in the sleep mode for performing the calibration of the analog-to-digital converter for reducing the power consumption.
摘要翻译： 传统的数字校准型模数转换器不能在分组信号的前同步码周期内收敛校准。 使用信标信号，轮询信号或另一用户信号或从收发机侧向接收机侧施加的信号对模数转换器进行数字校准。 部分或全部电路在除了数据接收和模数转换器校准之外的周期中进入休眠模式，使得信号监视单元检测到另一个信号，以在休眠模式下激活电路，以执行模拟 数字转换器，用于降低功耗。
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70.发明申请公开(公告)号：US20080227421A1
公开(公告)日：2008-09-18
申请号：US12047345
申请日：2008-03-13
CPC分类号： H04B1/28 , H04B1/0039 , H04W52/0225 , Y02D70/00 , Y02D70/40
摘要： A receiver to recover a signal of interest while consuming reduced power in some scenarios. The receiver contains a in-phase channel processing path and a quadrature phase channeling path for down converting an input signal to an intermediate frequency, and then recovering the signal of interest by further processing of the input signal at intermediate frequency. One of the two paths is turned off upon occurrence of a desired condition, which reduces power consumption. In an embodiment, the condition is that the input signal does not contain an image signal of the signal of interest.
摘要翻译： 在某些情况下消耗功率降低的接收机来恢复感兴趣的信号。 接收机包含同相信道处理路径和用于将输入信号下变频到中频的正交相位通道路径，然后通过进一步处理中频输入信号来恢复感兴趣的信号。 在出现所需条件时，两条路径之一被关闭，这降低了功耗。 在一个实施例中，条件是输入信号不包含感兴趣的信号的图像信号。
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