Title :
Analysis and optimization of reduced size printed monopole
Author :
Lebbar, H. ; Himdi, M. ; Daniel, J.P.
Author_Institution :
Lab. Antennas & Microelectron., Univ. of Rennes I., France
fDate :
June 28 1993-July 2 1993
Abstract :
A new structure of a shortened antenna operating at around 400 MHz is presented. The shortened monopole antenna using a step change line is printed on Duroid with a dielectric constant /spl epsi/r = 2.2 /spl plusmn/ 0.02 and thickness t = 0.8 /spl plusmn/ 0.02 mm. A shortening ratio of 51% is achieved. A simple analysis based on the transmission line model applied to printed dipole antennas, and the Babinet principle make it possible to optimize easily the geometry and the choice of ratio of the size of lines. The calculated results on input impedance are validated by experiment.<>
Keywords :
electric impedance; microstrip antennas; monopole antennas; optimisation; transmission line theory; 400 MHz; Babinet principle; UHF; input impedance; optimization; printed monopole; shortened monopole antenna; step change line; transmission line model; Coaxial components; Dipole antennas; Frequency; Impedance; Laboratories; Propagation constant; Propagation losses; Resonance; Transmission line antennas; Transmission line theory;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385566
