An RF hybrid coupler with phase and attenuation control that efficiently combines the functions of phase shifting and attenuation within a circuit. Embodiments include a hybrid coupler connected to parallel resistance-reactance (RX) circuits, where the reactance X may be a capacitor C or an inductor L; a hybrid coupler connected to parallel RX circuits (which may be variable), each of which is in turn series coupled to an inductive element L which corrects for attenuation range collapse while providing for fairly flat phase shift and attenuation performance as a function of frequency; and two hybrid couplers in a combined phase shifter and attenuator configuration, each with opposite frequency-dependent slopes and cascaded in series such that the slopes substantially cancel each other out, resulting in flat responses versus frequency.