Complex Antenna Factors of Resistor Loaded Dipole Antennas with Coaxial Cable Balun

Ki-Chai KIM  Takashi IWASAKI  

IEICE TRANSACTIONS on Communications   Vol.E89-B    No.4    pp.1467-1471
Publication Date: 2006/04/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.4.1467
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
dipole antennas,  resistor loading,  complex antenna factor,  

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This letter presents the characteristics of complex antenna factors of a resistor loaded dipole antenna with a balun consisting of two coaxial feeders (coaxial cable balun). The resistor loading is used to realize dipole antennas with higher fidelity than unloaded dipole equivalents. The complex antenna factor for a resistor loaded dipole antenna with coaxial cable balun is derived by extending the power loss concepts. The numerical results show that the series resistor loaded dipole antenna offers higher fidelity than the unloaded dipole. The result of the calculated complex antenna factors are in good agreement with that of the measured results.