“…The multiphase sinusoidal oscillator (MSO) is one important type of oscillator, which is useful for various electronic applications in communication systems, control systems, instruments, power electronics, single-sideband generators [1], etc. The MSO is designed by first-order circuits, such as an all-pass filter [2][3][4][5][6], a high-pass filter [7][8], and a low-pass filter [9][10][11][12][13][14][15][16][17][18][19]. To achieve the same magnitude and phase difference of each output sinusoidal waveform, the MSO should be designed from the same sub-circuit without an additional amplifier.…”