Multiple carrier phase modulated signal generating apparatus专利检索-阶跃恢复二极管二极管真空电子管电子零件及设备专利检索查询-专利查询网

Multiple carrier phase modulated signal generating apparatus

阅读：719发布：2020-08-09

专利汇可以提供Multiple carrier phase modulated signal generating apparatus专利检索，专利查询，专利分析的服务。并且Signal generator for use in testing FM communication receivers including a triggered free-running multivibrator which may be synchronized to operate at a frequency equal to the spacing between adjacent channels of the FM receiver and an audio oscillator. The outputs of the multivibrator and the audio oscillator are coupled to a step recovery diode which produces a spectrum of a plurality of harmonics of the frequency of the multivibrator, each of which is phase modulated by the output of the audio oscillator.，下面是Multiple carrier phase modulated signal generating apparatus专利的具体信息内容。

权利要求

1. Multiple carrier phase modulated signal generating apparatus including in combination first oscillator means operable to produce a signal of a basic frequency at an output connection; second oscillator means operable to produce a signal of a modulation frequency at an output connection; and spectrum generating-phase modulating means including a step recovery diode having an input electrode coupled to the output connection of the first oscillator means through a capacitance operable to block the modulation frequency and coupled to the output connection of the second oscillator means through a filtering means operable to pass the modulation frequency and block the basic frequency and having an output electrode, said spectrum generating-phase modulating means being operable to generate a plurality of harmonics of the basic frequency and to phase modulate each of the harmonics of the basic frequency by the modulation frequency; whereby a plurality of output signals are produced at the output electrode of the step recovery diode, each output signal being a harmonic of the basic frequency phase modulated by the modulation frequency.

2. Multiple carrier phase modulated signal generating apparatus in accordance with claim 1 wherein said first oscillator means includes a triggered free-running multivibrator employing two cross-coupled inverter circuits; and said second oscillator means includes a free-running multivibrator employing two cross-coupled inverter circuits.

3. Multiple carrier phase modulated signal generating apparatus in accordance with claim 2 including signal shaping means connected to the output connection of the spectrum generating-phase modulating means and operable to attenuate the plurality of output signals from the spectrum generating-phase modulating means by an amount inversely related to the frequency of the output signals whereby differences in the amplitudes of the output signals are reduced.

4. Multiple carrier phase modulated signal generating apparatus in accordance with claim 3 including an output terminal; and diode switch means coupled between the output connection of the signal generating-phase modulating means and the output terminal and operable to permit output signals to be passed to the output terminal only when a forward biasing potential is applied to the diode switch means.

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Multiple carrier phase modulated signal generating apparatus

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