Transmission line design

Design and calculation method for Dynamic Increasing Transmission Line Capacity

The Dynamic Line Rating (DLR) system is designed to improve the transmission capacity of overhead lines, which decreases or delays to re-build transmission lines. The system is composed of sampling terminals installed on dead-end configuration of a line and one control instrument equipped in dispatch center. The data between the sampling terminals and the control instrument is transmitted throu...

Using a VIA-Less CRLH Transmission Line to Design Compact Wilkinson Power Dividers and Rat-Race Couplers

A method for design and implementation of a compact via-less Composite Right/Left-Handed Transmission Line (CRLH TL) is presented. By introducing a new circuit model, the CRLH transmission line behavior is studied versus the parameters variations to achieve the desired characteristic impedance and electrical length. Then a compact quarter wavelength CRLH transmission line with 70 Ω characte...

A Flexible Transmission Line Model For Series-line Antennas Array Design

In this paper, a transmission line model is used to design series-fed antennas arrays over a band of frequencies for satellite communications. The transmission line model is simple, precise and allowing taking into account the whole geometrical, electric and technological characteristics of the antennas arrays. To validate this last, the obtained simulation results are compared with those obtai...

Distortionless Transmission Line

Deduce the differential equation for current (or voltage) in a two-conductor transmission line that is characterized by resistance R (summed over both conductors), inductance L, capacitance C and leakage conductance K, all defined per unit length. The leakage conductance describes the undesirable current Ileakage (per unit length) that flows directly from one conductor to the other across the d...

Collected Transmission-line Identities