会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • 주파수 상향 변환 시스템 및 방법
    • 주파수상향변환시스템및방법
    • KR100447555B1
    • 2004-09-08
    • KR1020017005018
    • 1999-10-18
    • 파커비전, 인크.
    • 소렐스,데이비드,에프.불트맨,마이클,제이.쿡,로버트,더블유.룩,리차드,씨.모세,찰리,디.로린스,그레고리,에스.로린스,마이클,더블유.
    • H03C1/62
    • H03D7/125H03C3/00
    • A method and system is described wherein a signal with a lower frequency is up-converted to a higher frequency. In one embodiment, the higher frequency signal is used as a stable frequency and phase reference. In another embodiment, the invention is used as a transmitter. The upconversion is accomplished by controlling a switch with an oscillating signal, the frequency of the oscillating signal being selected as a sub-harmonic of the desired output frequency. When the invention is being used as a frequency or phase reference, the oscillating signal is not modulated, and controls a switch that is connected to a bias signal. When the invention is being used in the frequency modulation (FM) or phase modulation (PM) implementations, the oscillating signal is modulated by an information signal before it causes the switch to gate the bias signal. In the amplitude modulation implementation (AM), the oscillating signal is not modulated, but rather causes the switch to gate a reference signal that is substantially equal to or proportional to the information signal. In the FM and PM implementations, the signal that is output from the switch is modulated substantially the same as the modulated oscillating signal. In the AM implementation, the signal that is output from the switch has an amplitude that is a function of the information signal. In both embodiments, the output of the switch is filtered, and the desired harmonic is output.
    • 描述了一种方法和系统,其中具有较低频率的信号被上变频到较高频率。 在一个实施例中,较高频率的信号被用作稳定的频率和相位参考。 在另一个实施例中,本发明被用作发射机。 上变频是通过用振荡信号控制开关来实现的,振荡信号的频率被选择为期望输出频率的次谐波。 当本发明被用作频率或相位参考时,振荡信号不被调制,并且控制连接到偏置信号的开关。 当本发明被用于频率调制(FM)或相位调制(PM)的实现中时,振荡信号在其导致开关将偏置信号选通之前由信息信号调制。 在幅度调制实施方式(AM)中,振荡信号不被调制,而是使得开关对与信息信号基本相等或成比例的参考信号进行选通。 在FM和PM实现中,从开关输出的信号被调制为与调制的振荡信号基本相同。 在AM实现中,从开关输出的信号具有作为信息信号的函数的幅度。 在两个实施例中,开关的输出被过滤,并且输出期望的谐波。