Digital Phase Shifter Circuit. In this article nishant presents an implementation of frequency independent phase shifter. The values of r3 and c1 determines the shift.
Six Bit Digital Phase Shifter Using Lumped Network For St Radar Semantic Scholar from www.semanticscholar.org
Digital in the case of phase shifters means two state devices where the states have different insertion phases at microwave frequencies. This allpass filter circuit swaps the location of r1 and c1. A ttd phase shifter provides an invariable time delay with frequency and is used for squint free and ultra wideband uwb beam steering.
Phase shifters are important to a variety of digital and analog communication applications.
Analog phase shifters provide a continuously variable phase most often controlled by a voltage. Phase shifters can be controlled using analog signals or digital bits. By changing r3 you can change the shift. Analog devices digital phase shifters change the phase of rf microwave or millimeter wave signals while providing no amplitude change.
