Accession Number:

ADP013367

Title:

The Ferroelectric Slab Waveguide: A Geometry for Microwave Components That Incorporate Ferroelectric Materials

Descriptive Note:

Conference proceedings

Corporate Author:

ARMY RESEARCH LAB ADELPHI MD RF ELECTRONICS DIV

Personal Author(s):

• Crowne, Frank J.
• Tidrow, Steven C.

Report Date:

2003-04-03

Pagination or Media Count:

6.0

Abstract:

A slab geometry, in which ferroelectric is inserted between two cladding layers with a microstrip electrode placed on top, is proposed as a way to integrate the properties of ferroelectric materials into microwave components. This structure distributes the propagating microwave fields between the ferroelectric and the cladding, so that the microwave dielectric constant is a weighted average of the dielectric constants of the two materials. It is shown that this geometry drastically reduces dissipation due to dielectric losses in the ferroelectric. In addition, by applying a dc bias to the micro strip line, the dielectric constant of the ferroelectric layer can be varied and with it the microwave properties of the structure.

Descriptors:

• *WAVEGUIDES
• *MICROWAVE EQUIPMENT
• *FERROELECTRIC MATERIALS
• SYMPOSIA
• ELECTROMAGNETIC PROPERTIES
• ELECTRONIC SCANNERS
• DIELECTRIC PROPERTIES
• ELECTRODES
• GEOMETRY
• LOSSES
• STRIP TRANSMISSION LINES
• BIAS
• BEAM STEERING
• DIRECT CURRENT
• ANTENNA ARRAYS
• CLADDING
• PHASED ARRAYS
• PHASE SHIFT
• MICROWAVE ANTENNAS
• CONFORMAL ANTENNAS

Subject Categories:

• Physical Chemistry
• Electricity and Magnetism
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE