Re: HYBRID QUADRATURE JH-6-4 or equivalent
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Hi Martin and All
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Illustration of SCPQ-10.5 Datsheet.
I thought about the "or some other element" that Martin mentioned.
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Most simple one is capacitance between the coil.
I did a simple simulation in LTSPICE.
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If the coil is 10uH and the capacitance between the windings is 4pF (2x2pF), it seems to behave as it should at about 25MHz.
I added a 100pF capacitor and it seems to work as a splitter/combiner at 3.5MHz.
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It is a crude simulation, but if the 3dB loss is acceptable, it could be used as a mono-band 90 degree Hybrid.
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I put the two pictures and the LTSPICE source in text on my brog.
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tnx & 73, Hisami 7L4IOU
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