Premium
Experimental and theoretical analysis of anisotropic trapezoidal antennas
Author(s) -
Popović Branko D.,
Djordjević Antonije R.
Publication year - 1981
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs016i006p01131
Subject(s) - radiation pattern , antenna (radio) , ground plane , acoustics , coaxial antenna , antenna measurement , optics , antenna factor , physics , monopole antenna , telecommunications , computer science
A novel broadband antenna is described, in the form of a comblike trapezoidal anisotropic structure above a ground plane. The base of the comb is mounted close to the ground plane, parallel to it, and is fed at one end by a coaxial line. Such an antenna has uniquely defined polarization of the radiated field and very good aerodynamic properties. An experimental model of the antenna was made using printed‐circuit technique. By trimming the upper edge of the comb, an antenna was obtained experimentally having VSWR less than 2.0 (with respect to 50 Ω) in a frequency range of about two octaves. It was found that the antenna radiation pattern varies with frequency, but that a direction exists in which the antenna radiates well at all frequencies in the range. A mathematical model was also developed, permitting rather accurate numerical analysis of the antenna.