Back to results

Virginia Tech

Wideband rotary transformer for VHF use

Abstract

dc:description.abstract

The theory of static wideband transformers has been applied to the design of a VHF rotary coupler that has a bandwidth ratio of 1000:1, and that requires no physical contact between the stator and rotor. A combination of balanced and unbalanced transmission line theory has been used to predict the performance of the coupler, and measurements on the prototype model showed excel lent agreement with predicted values. Input impedance and insertion loss were shown to be essentially independent of rotation over a wide frequency range. A significant aspect of this work is the analysis of the rotating turn in terms of two transmission line segments of variable length. This, coupled with the unbalanced-line theory from Sato [12J, led to a complex analysis that resulted in a system of 20 simultaneous equations to describe the 5-turn transformer. Thus, a computer solution was the only feasible method to predict the coupler performance.

Degree

thesis:*
Name thesis:degree_name
Ph. D.
Level thesis:degree_level
doctoral
Discipline thesis:degree_discipline
Electrical Engineering
Department dc:contributor.department
Electrical Engineering
Grantor dc:publisher
Virginia Tech
Year dc:date.issued
1975

Author and committee

dc:creator, dc:contributor.*
Author dc:creator
  • Allen, Charles W.
Chair dc:contributor.committeechair
  • Krauss, H. L.
Committee members dc:contributor.committeemember
  • Holt, C. A.
  • Slack, L. H.
  • Manus, E. A.
  • Blackwell, William A.

Subjects

dc:subject × 1

Rights

dc:rights
Statement dc:rights
  • In Copyright
Language dc:language.iso
en

Identifiers

dc:identifier.*
Dc Identifier Other
etd-06022010-020400
OAI identifier oai:identifier
oai:vtechworks.lib.vt.edu:10919/37936

Chain of custody

source
Harvested from
Virginia Tech
Base URL
vtechworks.lib.vt.edu/oai/request
Last updated
2026-07-22
Source record
OAI-PMH GetRecord
citation

Allen, Charles W.. Wideband rotary transformer for VHF use. doctoral thesis, Virginia Tech, 1975. http://hdl.handle.net/10919/37936