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The range from .5 to 2 MHz is an extremely broad frequency range to get
90' using any sort of LC network. It is greater than an octave, and that is why it's a problem. Generally, most phase shifters cover less than 1 octave.... If you are thinking about shifting a Local oscillator signal, I'd recommend a digital approach. If you multiply the LO by 4, you can then divide by 4 to get perfect 90' phase shift. Jim |
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