Val Baker

1. Introduction Phase shifters change the output phase angle of an input signal and are thus utilised in many areas of electronics, instrumentation, and signal processing [1,2,3,4,5,6]. The most commonly used types of phase shifters are, in fact, time delayers, which introduce a frequency-independent time delay. Depending on the intended application of the phase shifter, it is important to consider how the amplitude response is affected.