A SHIELDED STRIP SLOTTED LINE SAMPLE HOLDER FOR THE MEASUREMENT OF COMPLEX PERMITTIVITY AND PERMEABILITY AT MICROWAVE FREQUENCIES.
Abstract
A strip slotted line was constructed to measure the complex permittivity and permeability of lossy dielectrics and ferrites at frequencies between 0.4GHz and 2GHz. The line is 68.5 inches long. It consists of two ground planes six inches wide and 1.5 inches apart with a center conductor midway between them one inch wide and 0.5 inches thick. A transition section couples in microwaves in the TEM mode. Samples fit tightly between the ground planes and center conductor. The sample can be moved to positions of maximum E-field or maximum H-field. The change in standing wave pattern is monitored by a probe that travels along the open side of the line. A variety of dielectric and ferrites were measured at several frequencies with good results. The body of the report discusses the construction and evaluation of the line and measurement techniques. There are appendices titled: Determination of the Characteristic Impedance; Calibration of the Heterodyne Standing Wave Indicator System; Residual Reflection Coefficient Caused by Deflection of the Center Conductor; Residual Reflection Coefficient of the Center Conductor Support Structure; Shielded Stripline Attenuation and Q; Cut-Off Frequencies of the Higher Order Modes; Development of the Slotted Line Equations by Perturbation Theory; Analysis of Error Due to the Residual Reflection in the Slotted Line; The Equivalent Imittance of a Magneto-Dielectric Cylinder in a Parallel Plate Transmission Line, Measurement Procedure for the Shielded Strip Slotted Line; and List of Component Parts and Drawings. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1966
- Accession Number
- AD0807298
Entities
People
- Elaine C. Yoon
- William W. Raymond