Radiation Improvement From a Very Narrow Slotline Using a Short-Ended Double Spur-Line

In this letter, a simple design to improve an antenna radiation performance by adding a matching network consisting of short-ended double spur-line is proposed. By inserting a short-ended double spur-line in the slotline and connecting it with a ground plane, a parallel resonance with a bandpass cha...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2013, Vol.12, p.47-49
Main Authors: Kim, Hyungrak, Yoo, Young Kil, Jung, Jihak, Jung, Chang Won, Yoon, Young Joong
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Impedance
Loss measurement
Microstrip
Optical resonators
radiation
resonance
Slotline
spur-line
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Summary:In this letter, a simple design to improve an antenna radiation performance by adding a matching network consisting of short-ended double spur-line is proposed. By inserting a short-ended double spur-line in the slotline and connecting it with a ground plane, a parallel resonance with a bandpass characteristic occurs, and the characteristic impedance of the very narrow slotline is close to the impedance of free space. To verify this characteristic, an equivalent circuit model is presented to offer a detailed explanation, and the comparisons between the simulated and measured results are demonstrated.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2012.2237539