In this study, a mechanical movable device is used to achieve tuning phase shifter with adjustable substrate, which has huge potentiality of range. The main body microstrip structure. substrate two layers one layer. By moving the layer, equivalent relative permittivity component changed and tunability realized. -128.2° 96.1° at 6GHz while transmission coefficient S21 from -2.09dB -2.70dB throug...

In this paper, a quadrature phase shifter is presented. Due to operation in current-mode, the proposed circuit provides a wide frequency response, a low supply voltage, low power consumption and electronic controllability. Thus, it is very suitable for use in portable and battery-powered equipment such as hearing aid instrument and wireless radio device. The proposed quadrature phase shifter co...

In this paper we study the optimization of interleaved Mach-Zehnder silicon carrier depletion electro-optic modulator. Following the simulation results we demonstrate a phase shifter with the lowest figure of merit (modulation efficiency multiplied by the loss per unit length) 6.7 V-dB. This result was achieved by reducing the junction width to 200 nm along the phase-shifter and optimizing the ...