Slot Transmission Line Model of Interconnections Crossing Split Power/Ground Plane on High-speed Multi-layer Board

2002 ◽  
Author(s):  
Jingook Kim ◽  
Hyungsoo Kim ◽  
Youchul Jeong ◽  
Junho Lee ◽  
Joungho Kim
Keyword(s):  
Transmission Line ◽  
High Speed ◽  
Ground Plane ◽  
Transmission Line Model ◽  
Line Model

scholarly journals Design of CPW-fed Star-Shaped Monopole Antenna for UWB Applications using Transmission Line Model

2021 ◽  
Author(s):  
BUDHADEB MAITY ◽  
SISIR KUMAR NAYAK
Keyword(s):  
Transmission Line ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Transmission Line Model ◽  
Defected Ground Structure ◽  
Line Model ◽  
Hexagonal Ring ◽  
Uwb Applications

Abstract This article presents a structure of coplanar waveguide (CPW)-fed star-shaped monopole antenna (SSMA) with a pair of quarter-circular-slit (QCS) and partly-hexagonal-ring-slit (PHRS) defected ground structure. By inserting a pair of QCS and PHRS on the rectangular ground plane, an excellent impedance bandwidth is achieved i.e., 139 % (from 2.2--12.21 GHz). The dimension of the SSMA is about 0.286λ l ×0.216λ l mm 2 , where λ l is the wavelength in free space at the lowest operating frequency i.e, 2.2 GHz. The transmission line model (TLM) of the SSMA is presented and it shows the antenna behavior based on the effect of each element. It is observed that the characteristics of the TLM model are close to the simulation result using the CST simulator. From the results, it is observed that the proposed ultra-wideband (UWB) antenna close to omnidirectional radiation patterns and suitable for UWB Applications.

Microstrip Antenna

2019 ◽  
pp. 25-38
Author(s):  
Nandan Bhattacharyya ◽  
Jawad Yaseen Siddiqui
Keyword(s):  
Transmission Line ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
Fdtd Method ◽  
Dielectric Substrate ◽  
Cavity Model ◽  
Transmission Line Model ◽  
Line Model ◽  
Physical Insight ◽  
Wave Models

The microstrip antenna (MSA) consists of a dielectric substrate in between a metallic conducting patch and a ground plane. The most common forms of the MSA are the rectangular and circular patch MSAs. There are several microstrip antenna analysis methods. The most popular models are transmission-line model, cavity model, method of moments, FDTD method, and finite element method. The transmission-line model is the simplest of these methods, and it provides good physical insight but is less accurate. The cavity model is more accurate compared to the transmission-line model, but cavity model is more complex. Though cavity model gives good physical insight, it is rather difficult to model coupling. The full-wave models (which include primarily integral equations/moment method) are very accurate, very versatile, but they are the most complex models and usually give less physical insight. This chapter explores the microstrip antenna.

Calculation and Simulation of High-Speed Rail Connecting Ground Wire Coupled Response in Lightning Transient

2013 ◽  
Vol 347-350 ◽  
pp. 1373-1377
Author(s):  
Yun Guang Cui ◽  
Bo Huang ◽  
Hao Wu ◽  
Guang Ning Wu ◽  
Xiao Bin Cao
Keyword(s):  
Transmission Line ◽  
High Speed ◽  
Electromagnetic Coupling ◽  
Rapid Development ◽  
Simulation Software ◽  
Distributed Parameter ◽  
Infinite Length ◽  
Transmission Line Model ◽  
High Speed Rail ◽  
Line Model

With the rapid development of China's high-speed rail construction, accidents caused by lightning are more frequent. How to achieve a more effective lightning protection and grounding is the urgent problem to be solved currently. A two-parallel-connecting-ground-wire transmission line model with the distributed parameter of electromagnetic coupling would be built in this paper. In this model, the connecting ground wire would be defined as horizontal infinite length grounding body. The own distribution parameters of segmented conductor and the parameters of the electromagnetic coupling between the parallel segmented conductors are calculated, based on the theory of electromagnetic field to select the appropriate segment size. Based on this transmission line model, the electric potential distribution of the different positions on the two parallel connecting ground wires is calculated by using the electromagnetic transient calculation software ATP-EMTP. Comparing the calculation results in this paper and the simulation results in the simulation software CDGES, it would demonstrate that the electromagnetic coupling distributed parameter transmission line model in this paper is consistent with the actual situation and it could be used to analyze the electromagnetic coupling effect between the two buried parallel connecting ground wires.

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