Wideband Differential Phase Shifter Using Microstrip Nonuniform Transmission Lines

Abstract

Abstract-A new structure is proposed for wideband differential phase shifter.The proposed structure consists of a microstrip Nonuniform Transmission Line (NTL) and a microstrip Uniform Transmission Line (UTL). To optimally design the NTL, its strip width is expanded in a truncated Fourier series, firstly. Then, the optimum values of the coefficients of the series are obtained through an optimization approach to have low phase shift error and low reflection coefficient in desired frequency bandwidth. The usefulness of the proposed structure is studied using two examples.

Subwavelength Microwave Guiding by a Periodically Corrugated Metal Wire

“…In this paper, a new type of transmission line corrugated with periodical subwavelength grooves is proposed to introduce SPPs into microwave regime for reducing the crosstalk between transmission line circuits. The crosstalk between non-uniform strip line and uniform strip line also had been systematic investigated in [17,18]. A directional coupler, whose two strip lines are separated by a distance of the line width, is designed and simulated numerically and measured experimentally over the frequency range 200 MHz ∼ 12 GHz.…”

Standard Smith Chart Approach to Solve Exponential Tapered Nonuniform Transmission Line Problems

“…Nonuniform Transmission Lines are widely researched in [1][2][3][4][5][6][7][8][9][10][11], recently. In microwave design, the exponential tapered nonuniform transmission line (ETNUTL), one kind of nonuniform transmission lines, is useful in antenna matching section [12] and filter design [13].…”

Modeling and characterization of a 5.2 GHz VCO for UWB applications in 0.13 μm CMOS process

“…Wireless standards specify the minimum level of the received signal, the maximum level of noise, the channel bandwidth, and the spacing between adjunct channels. Therefore, the maximum amount of acceptable phase noise on the oscillator can be calculated using the required signal to noise ratio after down conversion [1][2][3][4][5].…”