| 摘要 |
<p>A phase shifter according to this invention comprises circuit groups on a phase advance side (A) and on a phase retardation side (B) in each of which N phase shifting circuits (A1 to An, B1 to Bn) of constant amplitude are connected in cascade, and in which the time constants of the successive phase shifting circuits are set at a geometrical progression of a fixed ratio α, while the time constants of the phase shifting circuits on the phase retardation side (B) are made times greater than those of the corresponding phase shifting circuits on the phase advance side (A). Thus, any desired difference can be attained according to the value a, while a desired phase difference can be attained according to the value (3, and the limits of a frequency band width are eliminated by increasing the number of stages N of the cascade connection of the circuit group.</p> |
