NDLI: Microstrip antennas with broadband integrated phase shifting

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Microstrip antennas with broadband integrated phase shifting

Content Provider	NASA Technical Reports Server (NTRS)
Author	Bernhard, Jennifer T.
Copyright Year	2001
Description	The goal of this research was to investigate the feasibility of using a spiral microstrip antenna that incorporates a thin ferroelectric layer to achieve both radiation and phase shifting. This material is placed between the conductive spiral antenna structure and the grounded substrate. Application of a DC bias between the two arms of the spiral antenna will change the effective permittivity of the radiating structure and the degree of coupling between contiguous spiral arms, therefore changing the phase of the RF signal transmitted or received by the antenna. This could eliminate the need for a separate phase shifter apart from the antenna structure. The potential benefits of such an antenna element compared to traditional phased array elements include: continuous, broadband phase shifting at the antenna, lower overall system losses, lighter, more efficient, and more compact phased arrays, and simpler control algorithms. Professor Jennifer Bernhard, graduate student Gregory Huff, and undergraduate student Brian Huang participated in this effort from March 1, 2000 to February 28, 2001. No inventions resulted from the research undertaken in this cooperative agreement.
File Size	244103
Page Count	6
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20010047827
Archival Resource Key	ark:/13960/t0ht7kf64
Language	English
Publisher Date	2001-01-01
Access Restriction	Open
Subject Keyword	Communications And Radar Broadband Bias Inventions Phased Arrays Phase Shift Circuits Radio Frequencies Algorithms Ferroelectricity Spiral Antennas Antenna Components Microstrip Antennas Feasibility Agreements Permittivity Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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