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1.发明授权Communications device with discriminator for generating intermediate frequency signal and related methods 有权具有用于产生中频信号的鉴频器的通信装置及相关方法公开(公告)号：US08526817B2
公开(公告)日：2013-09-03
申请号：US13356773
申请日：2012-01-24
CPC分类号： H04B10/25758
摘要： A communications device includes a transmitter device having an optical source to generate an optical carrier signal, and a first modulator coupled to the optical source and to modulate the optical carrier signal with a radio frequency (RF) input signal, and an optical waveguide coupled to the transmitter device. The communications device includes a receiver device coupled to the optical waveguide and including a second modulator to further modulate the modulated optical carrier signal with a local oscillator (LO) signal, a frequency modulation-phase modulation (FM-PM) discriminator coupled to the second modulator and to convert the modulated optical carrier signal to an intensity modulated optical carrier signal based upon the LO signal, and an optical-to-electrical converter coupled to the FM-PM discriminator and to generate an intermediate frequency (IF) signal based upon the intensity modulated optical carrier signal.
摘要翻译： 通信设备包括具有用于产生光载波信号的光源的发射机设备，以及耦合到光源并利用射频（RF）输入信号调制光载波信号的第一调制器，以及耦合到 发射机设备。 通信设备包括耦合到光波导的接收机设备，并且包括第二调制器，以用本地振荡器（LO）信号进一步调制调制的光载波信号，耦合到第二调制器的调频相位调制（FM-PM）鉴别器 并且基于LO信号将经调制的光载波信号转换为强度调制的光载波信号，以及耦合到FM-PM鉴别器的光电转换器，并基于该信号产生中频（IF）信号 强度调制光载波信号。
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2.发明申请PHOTONIC COMMUNICATIONS DEVICE WITH AN FM/PM DISCRIMINATOR AND RELATED METHODS 有权具有FM / PM分辨率的光电通信设备及相关方法公开(公告)号：US20130064546A1
公开(公告)日：2013-03-14
申请号：US13228976
申请日：2011-09-09
CPC分类号： H04B10/676 , H04B10/506
摘要： A communications device includes a transmitter device having first and second optical sources and generating respective first and second modulated optical carrier signals at first and second optical carrier frequencies based upon an input signal. The communications device also includes an optical waveguide coupled to the transmitter device, and a receiver device coupled to the optical waveguide and including an FM-PM discriminator having a transfer function with a positive slope portion and a negative slope portion so that the first optical carrier frequency is positioned on the positive slope portion and the second optical carrier frequency is positioned on the negative slope portion.
摘要翻译： 通信设备包括具有第一和第二光源的发射机设备，并且基于输入信号在第一和第二光载波频率处产生相应的第一和第二调制光载波信号。 通信设备还包括耦合到发射机设备的光波导和耦合到光波导的接收机设备，并且包括具有正斜率部分和负斜率部分的传递函数的FM-PM鉴别器，使得第一光载波 频率位于正斜率部分上，第二光载波频率位于负斜率部分上。
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公开(公告)号：US5345135A
公开(公告)日：1994-09-06
申请号：US10072
申请日：1993-01-26
申请人： Robert C. Peach
发明人： Robert C. Peach
CPC分类号： H03H9/02992
摘要： An interdigital transducer for use in a surface acoustic wave filter has two busbars of an irregular shape to reduce the effect of internally reflected surface waves. The busbars will usually have an identical shape to one another and have stepped outer and inner edges. The distance between a portion of the outer edge and a corresponding portion of the inner edge can be constant for a particular busbar or that distance can vary. With previous busbars, the outer and inner edges are linear and each busbar has a rectangular shape.
摘要翻译： 用于表面声波滤波器的叉指换能器具有两个不规则形状的母线，以减少内部反射的表面波的影响。 母线通常具有彼此相同的形状并且具有阶梯状的外部和内部边缘。 外边缘的一部分和内边缘的对应部分之间的距离对于特定母线可以是恒定的，或者该距离可以变化。 使用以前的母线，外边缘和内边缘是线性的，每条母线都是矩形的。
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4.发明授权公开(公告)号：US08620158B2
公开(公告)日：2013-12-31
申请号：US13356807
申请日：2012-01-24
CPC分类号： H04B10/25758 , H04B2210/006
摘要： A communications device includes a transmitter device including first and second optical sources, a first optical coupler coupled to the first and second optical sources, and a first modulator coupled to the first optical coupler and to modulate a combined carrier signal including the first and second optical carrier signals with an RF input signal. The communications device includes a receiver device having a second modulator to further modulate the modulated combined carrier signal with an LO signal, a FM-PM discriminator coupled to the second modulator and to convert the modulated combined carrier signal to an intensity modulated combined carrier signal based upon the LO signal, a second optical coupler coupled to the FM-PM discriminator and to generate first and second intensity modulated carrier signals, and an optical-to-electrical converter coupled to the second optical coupler and to generate an IF signal.
摘要翻译： 通信设备包括发射机设备，其包括第一和第二光源，耦合到第一和第二光源的第一光耦合器，以及耦合到第一光耦合器的第一调制器，并且调制包括第一和第二光源的组合载波信号 载波信号与RF输入信号。 通信设备包括具有第二调制器的接收机设备，用于利用LO信号进一步调制经调制的组合载波信号，FM-PM鉴别器耦合到第二调制器并将调制的组合载波信号转换为基于强度调制的组合载波信号 在所述LO信号上，耦合到所述FM-PM鉴别器并产生第一和第二强度调制载波信号的第二光耦合器，以及耦合到所述第二光耦合器并产生IF信号的光电转换器。
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5.发明申请COMMUNICATIONS DEVICE WITH DISCRIMINATOR FOR GENERATING INTERMEDIATE FREQUENCY SIGNAL AND RELATED METHODS 有权具有用于产生中间频率信号的识别器的通信设备及相关方法公开(公告)号：US20130188962A1
公开(公告)日：2013-07-25
申请号：US13356773
申请日：2012-01-24
IPC分类号： H04B10/13
CPC分类号： H04B10/25758
摘要： A communications device includes a transmitter device having an optical source to generate an optical carrier signal, and a first modulator coupled to the optical source and to modulate the optical carrier signal with a radio frequency (RF) input signal, and an optical waveguide coupled to the transmitter device. The communications device includes a receiver device coupled to the optical waveguide and including a second modulator to further modulate the modulated optical carrier signal with a local oscillator (LO) signal, a frequency modulation-phase modulation (FM-PM) discriminator coupled to the second modulator and to convert the modulated optical carrier signal to an intensity modulated optical carrier signal based upon the LO signal, and an optical-to-electrical converter coupled to the FM-PM discriminator and to generate an intermediate frequency (IF) signal based upon the intensity modulated optical carrier signal.
摘要翻译： 通信设备包括具有用于产生光载波信号的光源的发射机设备，以及耦合到光源并利用射频（RF）输入信号调制光载波信号的第一调制器，以及耦合到 发射机设备。 通信设备包括耦合到光波导的接收机设备，并且包括第二调制器，以用本地振荡器（LO）信号进一步调制调制的光载波信号，耦合到第二调制器的调频相位调制（FM-PM）鉴别器 并且基于LO信号将经调制的光载波信号转换为强度调制的光载波信号，以及耦合到FM-PM鉴别器的光电转换器，并基于该信号产生中频（IF）信号 强度调制光载波信号。
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公开(公告)号：US4527866A
公开(公告)日：1985-07-09
申请号：US480394
申请日：1983-03-30
摘要： A spectrum analyzer incorporates a 36.degree. Y cut lithium niobate Bragg cell provided on one face with an interdigital transducer. The 36.degree. Y cut maximizes the ratio of quasi-longitudinal to quasi-shear wave piezoelectric coupling with the interdigital transducer and thereby minimizes the output of spurious signals from the analyzer. In a preferred embodiment the Bragg cell comprises two lithium niobate crystals bonded by a metal (preferably gold) film, the crystal attached to the transducer being 36.degree. Y cut and the other crystal being cut so as to maximize acousto-optic coupling.
摘要翻译： 频谱分析仪将一个36°Y切割的铌酸锂布拉格单元与一个叉指式换能器组合在一起。 36°Y切割使准纵向与准剪切波压电耦合与叉指式换能器的比例最大化，从而最小化来自分析仪的杂散信号的输出。 在优选实施例中，布拉格单元包括由金属（优选为金）膜结合的两个铌酸锂晶体，附着在换能器上的晶体为36°Y切割，另一晶体被切割以使声光耦合最大化。
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7.发明申请COMMUNICATIONS DEVICE WITH DISCRIMINATOR AND WAVELENGTH DIVISION MULTIPLEXING FOR GENERATING INTERMEDIATE FREQUENCY SIGNAL AND RELATED METHODS 有权具有用于产生中间频率信号的分辨率和波长分段多路复用的通信设备及相关方法公开(公告)号：US20130188952A1
公开(公告)日：2013-07-25
申请号：US13356807
申请日：2012-01-24
CPC分类号： H04B10/25758 , H04B2210/006
摘要： A communications device includes a transmitter device including first and second optical sources, a first optical coupler coupled to the first and second optical sources, and a first modulator coupled to the first optical coupler and to modulate a combined carrier signal including the first and second optical carrier signals with an RF input signal. The communications device includes a receiver device having a second modulator to further modulate the modulated combined carrier signal with an LO signal, a FM-PM discriminator coupled to the second modulator and to convert the modulated combined carrier signal to an intensity modulated combined carrier signal based upon the LO signal, a second optical coupler coupled to the FM-PM discriminator and to generate first and second intensity modulated carrier signals, and an optical-to-electrical converter coupled to the second optical coupler and to generate an IF signal.
摘要翻译： 通信设备包括发射机设备，其包括第一和第二光源，耦合到第一和第二光源的第一光耦合器，以及耦合到第一光耦合器的第一调制器，并且调制包括第一和第二光源的组合载波信号 载波信号与RF输入信号。 通信设备包括具有第二调制器的接收机设备，用于利用LO信号进一步调制经调制的组合载波信号，FM-PM鉴别器耦合到第二调制器并将调制的组合载波信号转换为基于强度调制的组合载波信号 在LO信号上，耦合到FM-PM鉴别器并产生第一和第二强度调制载波信号的第二光耦合器，以及耦合到第二光耦合器并产生IF信号的光电转换器。
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公开(公告)号：US20090161797A1
公开(公告)日：2009-06-25
申请号：US12360473
申请日：2009-01-27
IPC分类号： H04L27/00
CPC分类号： H04B7/18513 , G08G3/02
摘要： A system and method of detecting Automatic Identification System (AIS) signals in space and decoding these signals. In one aspect, a system for performing this function is described which includes a receiver configured to receive the plurality of AIS signals and pre-process the plurality of AIS signals to produce digital input data, and a processor configured to process the digital input data to identify one or more candidate AIS message signals based on Doppler offsets associated with the digital input data, determine corresponding Doppler offset estimates and time estimates of the one or more candidate AIS message signals, decollide and decode the one or more candidate AIS message signals to obtain corresponding message segments and validate the decoded message segments for proper AIS formatting.
摘要翻译： 一种在空间中检测自动识别系统（AIS）信号并对这些信号进行解码的系统和方法。 在一个方面，描述了一种用于执行该功能的系统，其包括被配置为接收多个AIS信号并预处理多个AIS信号以产生数字输入数据的接收器，以及处理器，被配置为将数字输入数据 基于与数字输入数据相关联的多普勒偏移识别一个或多个候选AIS消息信号，确定相应的多普勒偏移估计和一个或多个候选AIS消息信号的时间估计，对一个或多个候选AIS消息信号进行解叠和解码以获得 相应的消息段，并验证解码的消息段以获得正确的AIS格式。
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9.发明授权Photonic communications device with an FM/PM discriminator and related methods 有权具有FM / PM鉴别器的光子通信设备及相关方法公开(公告)号：US08879919B2
公开(公告)日：2014-11-04
申请号：US13228976
申请日：2011-09-09
CPC分类号： H04B10/676 , H04B10/506
摘要： A communications device includes a transmitter device having first and second optical sources and generating respective first and second modulated optical carrier signals at first and second optical carrier frequencies based upon an input signal. The communications device also includes an optical waveguide coupled to the transmitter device, and a receiver device coupled to the optical waveguide and including an FM-PM discriminator having a transfer function with a positive slope portion and a negative slope portion so that the first optical carrier frequency is positioned on the positive slope portion and the second optical carrier frequency is positioned on the negative slope portion.
摘要翻译： 通信设备包括具有第一和第二光源的发射机设备，并且基于输入信号在第一和第二光载波频率处产生相应的第一和第二调制光载波信号。 通信设备还包括耦合到发射机设备的光波导和耦合到光波导的接收机设备，并且包括具有正斜率部分和负斜率部分的传递函数的FM-PM鉴别器，使得第一光载波 频率位于正斜率部分上，第二光载波频率位于负斜率部分上。
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公开(公告)号：US5332983A
公开(公告)日：1994-07-26
申请号：US10073
申请日：1993-01-26
申请人： Robert C. Peach
发明人： Robert C. Peach
CPC分类号： H03H9/6426 , H03H9/02818
摘要： A filterbank using surface acoustic wave technology and having a plurality of filters. Each filter has an input transducer and an output transducer. The input transducers are connected in parallel to a single matching circuit. The output transducers each have a separate matching circuit. The transducers are formed by a thin film of aluminum pattern on a piezoelectric substrate. The input transducers all have the same structure and the output transducers all have the same structure, though that structure is different from the input transducers. The only difference between the transducers of each filter is the location of electrode breaks for each electrode. A weighting function of the transducers is scaled and biased to provide a constant impedance across the bandwidth of the filterbank and to equalize the output amplitudes and capacitances of the output transducers. This produces a continuous level response across the bandwidth of the filterbank. Previously, while a continuous level response was theoretically achievable, it cannot be achieved in practice.
摘要翻译： 一种使用声表面波技术并具有多个滤波器的滤波器组。 每个滤波器都有一个输入传感器和一个输出传感器。 输入传感器并联连接到单个匹配电路。 输出传感器各自具有单独的匹配电路。 换能器由压电基板上的铝图案薄膜形成。 输入传感器都具有相同的结构，输出传感器都具有相同的结构，尽管该结构与输入传感器不同。 每个滤波器的换能器之间的唯一区别是每个电极的电极断裂位置。 换能器的加权函数被缩放和偏置以在滤波器组的带宽上提供恒定的阻抗并且均衡输出变换器的输出幅度和电容。 这在滤波器组的带宽上产生连续的电平响应。 以前，虽然理论上可以实现持续的层次反应，但在实践中是不可能实现的。
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