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Two‐turn contrawound toroidal helix antenna
Author(s) -
Hansen R. C.
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10289
Subject(s) - reactance , turn (biochemistry) , resonance (particle physics) , bandwidth (computing) , helical antenna , lossy compression , microwave , toroid , electrical engineering , physics , engineering , antenna (radio) , dipole antenna , nuclear magnetic resonance , computer science , telecommunications , antenna factor , atomic physics , voltage , plasma , artificial intelligence , quantum mechanics
The two‐turn CWTHA is analyzed from a small diameter that allows constant current, through the third resonance. Around the third resonance, and around the first resonance and below, the bandwidth is much less than 1%. The very low (or very high) values of resistance make matching difficult and lossy. At the second resonance the resistance is modest, but the rapid change of reactance limits the bandwidth to a few percent. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 251–252, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10289