A hybrid coupler is a special case, where a 3 dB split is desired between the through path and the coupled path. There are two types of hybrid couplers, 90 degree couplers (such as Langes or branchlines) and 180 degree hybrids (such as rat-races and magic tees). We have a separate page on this topic, click here!
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Donald Harvey is led back to jail by Laurel County, Kentucky, sheriffs in 1987 after confessing to killing between 70 and 87 people. A DISTINCT odor, the scent of burnt almonds, turned a routine autopsy into a murder investigation â and then into a probe of one of the countryâs worst serial killers.