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    • 5. 发明申请
    • Direct digital synthesizer system and related methods
    • 直接数字合成器系统及相关方法
    • US20070040615A1
    • 2007-02-22
    • US11204674
    • 2005-08-16
    • Danny Ammar
    • Danny Ammar
    • H03L7/00
    • G06F1/0328G06F1/0342G06F2211/902H03L7/16
    • A direct digital synthesizer (DDS) has reduced spurious signals and includes a DDS core that produces a digital representation of a signal to be synthesized. A plurality of DDS circuits are operatively connected to the DDS core, each having a digital-to-analog converter connected to the DDS core for receiving the digital representation and converting it into a signal. A modulator is operatively connected to an oscillator circuit and digital-to-analog converter for receiving signals from the digital-to-analog converter and producing a modulated output signal. The individual frequencies of the respective DDS circuits are randomly and continuously changed from each other. A mixer receives and mixes the modulated output signals from the plurality of DDS circuits to create a mixed output signal at a selected and fixed frequency.
    • 直接数字合成器(DDS)具有减少的杂散信号,并且包括产生要合成的信号的数字表示的DDS核。 多个DDS电路可操作地连接到DDS核心,每个DDS核心具有连接到DDS核心的数模转换器,用于接收数字表示并将其转换成信号。 调制器可操作地连接到振荡器电路和数 - 模转换器,用于从数模转换器接收信号并产生调制输出信号。 相应的DDS电路的各个频率彼此随机和连续地变化。 混频器接收并混合来自多个DDS电路的调制输出信号,以选择和固定的频率创建混合输出信号。
    • 6. 发明申请
    • Multi-channel radiometer imaging system
    • 多通道辐射计成像系统
    • US20060164064A1
    • 2006-07-27
    • US11371472
    • 2006-03-09
    • Danny Ammar
    • Danny Ammar
    • G01S3/02
    • G01K11/006
    • A radiometer system includes a housing and an RF board contained within the housing. Balanced radiometer channels receive an unknown signal and known reference. Each balanced radiometer channel includes at least one quadrature hybrid and amplifier circuit to provide distributed gain and an amplified output signal. A detection circuit receives and detects the amplified output signal forming a detected signal. A controller board is contained within the housing and has an integration circuit and microcontroller that receives the detected signal and performs video signal digitization and conditioning and real-time corrections on any radiometer channels to account for ranges in temperature or gain.
    • 辐射计系统包括壳体和容纳在壳体内的射频板。 平衡辐射计通道接收未知信号和已知参考。 每个平衡辐射计通道包括至少一个正交混合和放大器电路,以提供分布增益和放大的输出信号。 检测电路接收并检测形成检测信号的放大的输出信号。 控制器板包含在外壳内,并具有集成电路和微控制器,其接收检测到的信号,并对任何辐射计通道执行视频信号数字化和调节和实时校正,以考虑温度或增益范围。
    • 7. 发明申请
    • Multi-channel radiometer imaging system
    • 多通道辐射计成像系统
    • US20050063447A1
    • 2005-03-24
    • US10847892
    • 2004-05-18
    • Danny Ammar
    • Danny Ammar
    • G01K11/00G01K15/00G01K19/00G01S7/40
    • G01K11/006
    • A radiometer system includes a housing and an RF board contained within the housing. Balanced radiometer channels receive an unknown signal and known reference. Each balanced radiometer channel includes at least one quadrature hybrid and amplifier circuit to provide distributed gain and an amplified output signal. A detection circuit receives and detects the amplified output signal forming a detected signal. A controller board is contained within the housing and has an integration circuit and microcontroller that receives the detected signal and performs video signal digitization and conditioning and real-time corrections on any radiometer channels to account for changes in temperature or gain.
    • 辐射计系统包括壳体和容纳在壳体内的射频板。 平衡辐射计通道接收未知信号和已知参考。 每个平衡辐射计通道包括至少一个正交混合和放大器电路,以提供分布增益和放大的输出信号。 检测电路接收并检测形成检测信号的放大的输出信号。 控制器板包含在壳体内,并具有集成电路和微控制器,其接收检测到的信号并对任何辐射计通道执行视频信号数字化和调节和实时校正,以考虑温度或增益的变化。
    • 8. 发明申请
    • MULTI-CHANNEL RADIOMETER IMAGING SYSTEM
    • 多通道射线成像系统
    • US20070090824A1
    • 2007-04-26
    • US11280004
    • 2005-11-16
    • Danny Ammar
    • Danny Ammar
    • G01S3/02
    • G01K11/006
    • A radiometer system includes a housing and an RF board contained within the housing. Balanced radiometer channels receive an unknown signal and known reference. Each balanced radiometer channel includes at least one quadrature hybrid and amplifier circuit to provide distributed gain and an amplified output signal. A detection circuit receives and detects the amplified output signal forming a detected signal. A controller board is contained within the housing and has an integration circuit and microcontroller that receives the detected signal and performs video signal digitization and conditioning and real-time corrections on any radiometer channels to account for changes in temperature or gain.
    • 辐射计系统包括壳体和容纳在壳体内的射频板。 平衡辐射计通道接收未知信号和已知参考。 每个平衡辐射计通道包括至少一个正交混合和放大器电路,以提供分布增益和放大的输出信号。 检测电路接收并检测形成检测信号的放大的输出信号。 控制器板包含在壳体内,并具有集成电路和微控制器,其接收检测到的信号并对任何辐射计通道执行视频信号数字化和调节和实时校正,以考虑温度或增益的变化。