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NE602和NE5212在晶体振荡器和频率倍增器中的应用
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2009-06-02
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This paper shows how to use the NE602 and NE5212 in VHF and
UHF LO generators. The NE602 is a very low power active mixer,
yet 7th overtone crystal oscillations are relatively easy to build.
Optimization of such circuits is shown in the first part of this paper.
Although designed as a fiber optic amplifier, the NE5212 can be
used as a feedback oscillator with good results. The second part of
this paper shows how the NE602 can be used as a frequency doubler.
Combinations of the two techniques can give the RF designer
a wide variety of low power VHF/UHF signal sources from overtone
oscillators and/or frequency multiplier chains.
UHF LO generators. The NE602 is a very low power active mixer,
yet 7th overtone crystal oscillations are relatively easy to build.
Optimization of such circuits is shown in the first part of this paper.
Although designed as a fiber optic amplifier, the NE5212 can be
used as a feedback oscillator with good results. The second part of
this paper shows how the NE602 can be used as a frequency doubler.
Combinations of the two techniques can give the RF designer
a wide variety of low power VHF/UHF signal sources from overtone
oscillators and/or frequency multiplier chains.
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