Broadband and Miniaturized Structure Loaded With Lumped Capacitors for Parasitic Current Reduction

A broadband and miniaturized structure for parasitic current reduction induced on the outer conductor of electrically coaxial cables is presented. The structure consists of a metallic sheet with 10 pairs of symmetrical L-shaped slots embedded. Lumped capacitors are loaded to miniaturize the entire s...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2012, Vol.11, p.1010-1013
Main Authors: Xiaowei Yang, Baohua Sun, Ling Sun, Jingli Guo, Yanlin Zou
Format: Article
Language:English
Subjects:
Broadband
Broadband antennas
capacitor loaded
Capacitors
coaxial cable
Coaxial cables
Conductors
current reduction
Ferrites
L-shaped slots
miniaturized
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Summary:A broadband and miniaturized structure for parasitic current reduction induced on the outer conductor of electrically coaxial cables is presented. The structure consists of a metallic sheet with 10 pairs of symmetrical L-shaped slots embedded. Lumped capacitors are loaded to miniaturize the entire size. The operation of the entire structure is similar to a series of parallel LC resonators. When the parasitic current flowing on the outer conductor of the coaxial cable, the equivalent parallel LC circuit can suppress the current efficiently at the broad bandwidth. Experimental and simulation results are presented and discussed. The structure can suppress the parasitic current at the 250-400-MHz band for a -10-dB transmittance.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2012.2214432