NDLI: New tunable phase shifters using perturbed dielectric image lines

Content Provider	IEEE Xplore Digital Library
Author	Ming-Yi Li Kai Chang
Copyright Year	1963
Abstract	This paper presents new tunable phase shifters using perturbed dielectric image lines (DILs). The propagation constant in the DIL was perturbed by a movable metal reflector plate installed in parallel with the ground plane of the DIL. The phase shift was thus controlled and adjusted by varying the perturbation spacing between the DIL and movable reflector plate at a given operating frequency. A rigorous hybrid-mode analysis was used for calculating the dispersion of propagation constants in the perturbed DIL, and then for designing tunable phase shifters. Ka-band tunable phase shifters have been designed, fabricated, and tested. Measurement results agree well with theoretical predictions. The device is especially useful for millimeter-wave applications where traditional phase shifters are lossy.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	1520
Ending Page	1523
Page Count	4
File Size	112443
File Format	PDF
ISSN	00189480
Volume Number	46
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phase shifters Dielectrics Antennas and propagation Dipole antennas Electronics packaging Absorption Humans Mobile communication Electromagnetic scattering Microwave theory and techniques
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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