Skip to main content
SpringerLink
Log in

Q-factor and bandwidth estimation of sharp resonant phenomena in transmission line systems with grounding points

Näherungsmethode zur Berechnung von Gütefaktor und Bandbreite scharfer Resonanzerscheinungen bei Mehrfachleitungen mit Erdungspunkten

  • Published:
Archiv für Elektrotechnik Aims and scope Submit manuscript

Contents

Transmission line systems exist with grounding points at both the sending and receiving ends; due to standing wave phenomena the transmission performance of such systems is critically affected in the neighbourhood of certain resonant frequencies — attenuation, phase constant and characteristic impedance showing large amplitude variations in a relatively small frequency range. In this paper a simple accurate method to estimate the quality factor and the bandwidth of the resonant curves describing the frequency behaviour of the transmission line propagation parameters is presented.

Übersicht

Es gibt Übertragungsmehrleitersysteme, die mit Erdungspunkten an beiden Enden versehen sind. Auf Grund stehender Wellen treten bei solchen Systemen Resonanzerscheinungen auf, die für bestimmte enge Frequenzbereiche große Amplitudenschwankungen von Dämpfungsmaß, Phasenmaß und Wellenwiderstand aufweisen. Eine einfache Näherungsmethode hoher Genauigkeit für die Berechnung von Gütefaktor und Bandbreite des Frequenzganges der die Wellenausbreitung charakterisierenden Parameter wird ausführlich behandelt.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Pipes, L. A.: Matrix theory of multiconductor transmission lines. Phil. Mag. S. 7. Vol. 24 (1937) 97–113

    Google Scholar 

  2. Rice, S. O.: Steady state solutions of transmission line equations. Bell System Tech. J. Vol. XX (1941) 131–178

    Google Scholar 

  3. Matthaei, G. L.: Design of wide-band band-pass microwave filters on the insertion loss basis. IEEE Trans. Microwave Theory Tech. Vol. MTT-8 (1960) 580–593

    Google Scholar 

  4. Wedepohl, L. M.: Application of matrix methods to the solution of travelling-wave phenomena in polyphase systems. Proc. IEE. Vol. 110 (1963) 2200–2212

    Google Scholar 

  5. Wedepohl, L. M.; Wasley, R. G.: Wave propagation in polyphase transmission systems — Resonance effects due to discretely bonded earth wires. Proc. IEE. Vol. 112 (1965) 2113–2119

    Google Scholar 

  6. Wedepohl, L. M.; Wilcox, D. J.: Transient analysis of underground power transmission systems. Proc. IEE. Vol. 120 (1973) 253–260

    Google Scholar 

  7. Working Group 04 of CIGRE Study Committee No. 35: Memorandum on power line carrier systems. (1973)

  8. Dommel, H. W.; Meyer, W. S.: Computation of electromagnetic transients. Proc. IEEE. Vol. 62 (1974) 983–993

    Google Scholar 

  9. Gary, C.: Approche complete de la propagation multifilaire en haute fréquence par utilisation des matrices complexes. Bulletin EDF — Série B. No. 3/4 (1976) 5–20

    Google Scholar 

  10. Carroll, J. E.; Rigg, P. R.: Matrix theory for n-line microwave coupler design. IEE Proc. Pt. H. Vol. 127 (1980) 87–91

    Google Scholar 

  11. Harrington, R. F.; Wei C.: Losses on multiconductor transmission lines in multilayered dielectric media. IEEE Trans. Microwave Theory Tech. Vol. MTT-32 (1984) 705–710

    Google Scholar 

  12. Brandão Faria, J. A.: Teoria modal generalizada das linhas de transmissão de energia. Ph. D. Thesis (1985). Instituto Superior Técnico-Universidade Técnica de Lisboa

  13. Brandão Faria, J. A.; Borges da Silva, J. F.: Wave propagation in polyphase transmission lines — A general solution to include cases where ordinary modal theory fails. IEEE Trans. Power Delivery. Vol. 1 (1986) 182–189

    Google Scholar 

  14. Romeo, F.; Santomauro, M.: Time-domain simulation of n coupled transmission lines. IEEE Trans. Microwave Theory Tech. Vol. MTT-35 (1987) 131–136

    Google Scholar 

  15. Brandão Faria, J. A.: Standing wave effects in a symmetrical three line microstrip coupler with short-circuited side lines. Microwave and Optical Technology Letters. Vol. 2 (1989) 64–70

    Google Scholar 

  16. Brandão Faria, J. A.; Borges da Silva, J. F.: The effect of randomly earthed ground wires on PLC transmission — A simulation experiment. IEEE/PES 1989 Transmission and Distribution Conference, New Orleans, paper 89 TD 441-7 PWRD

Download references

Author information

Authors and Affiliations

  1. Department of Electrical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1096, Lisboa Codex, Portugal

    J. A. Brandão Faria &  J. F. Borges da Silva

Authors
  1. J. A. Brandão Faria
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. F. Borges da Silva
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Brandão Faria, J.A., Borges da Silva, J.F. Q-factor and bandwidth estimation of sharp resonant phenomena in transmission line systems with grounding points. Archiv f. Elektrotechnik 73, 35–43 (1990). https://doi.org/10.1007/BF01573462

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01573462

Keywords

Search

Navigation