NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The effect of coupling line loss in microstrip to dielectric resonator couplingThe interaction between a dielectric resonator and a microstrip transmission line is fundamentally a field phenomenon. However, the model of Figure 1b widely is used to represent the arrangement in Figure 1a, and predicts the behavior encountered in practice. The microstrip line of length l = n(lambda)/4 between the input and coupling planes and the lambda/4 open-circuit stub usually is assumed to be lossless. This paper considers the effect of coupling line loss on the unloaded-Q and coupling coefficient beta of the combination. It shows that transmission line loss can cause the decrease in unloaded-Q that has been observed to occur with tight coupling, and limits the coupling coefficient to a much lower value than would be obtained with a lossless coupling line.
Document ID
19910031552
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hearn, C. P.
(NASA Langley Research Center Hampton, VA, United States)
Bradshaw, E. S.
(NASA Langley Research Center Hampton, VA, United States)
Trew, R. J.
(North Carolina State University Raleigh, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1990
Publication Information
Publication: Microwave Journal
Volume: 33
ISSN: 0192-6225
Subject Category
Electronics And Electrical Engineering
Accession Number
91A16175
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available