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In article , "John Smith"
wrote: Bindy: You may find the following link of interest: http://www.w8ji.com/combiner_and_splitters.htm Regards, John Smith Hello, John, and that link does not cover 0-90 degree (quadrature) hybrids which I'm guessing is what Bindy is after. A commercially-available broadband quadrature combiner/splitter is usually implemented using a 0-0 or 0-180 hybrid to which an all-pass network is added to achieve the desired phase difference out the output ports of the hybrid. Getting these devices to behave properly over a broad frequency range is somewhat of a black art and vendors such as Mini-Circuits and Merrimac keep these techniques to themselves. Sincerely, and 73s from N4GG0, John Wood (Code 5550) e-mail: Naval Research Laboratory 4555 Overlook Avenue, SW Washington, DC 20375-5337 |
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