A Unique Solid-State Diplexer (Correspondence)

A diplexer is a familiar device which readily combines two separate radio-frequency signals to permit simultaneous transmission through a single transmission line or separates a composite signal into its constituent parts to permit each part to be transmitted or proceed individually. This correspondence describes a unique method of deriving diplexing action in a simple Y-junction circulator, and suggests a method of diplexing in other devices which depend upon the phase shift properties of ferrimagnetic material for their operation.