Title :
Coplanar waveguide-fed uniplanar bow-tie antenna
Author :
Lin, Yu-De ; Tsai, Syh-Nan
Author_Institution :
Antenna Lab., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
2/1/1997 12:00:00 AM
Abstract :
The design of coplanar waveguide (CPW)-fed bow-tie antenna for the 2.4-GHz ISM band is described. A coplanar waveguide-to-coplanar strips (CPW-to-CPS) balun is used to obtain the balanced feed line for the printed bow-tie. An analysis method based on the mixed potential integral equation method is used to characterize the input characteristics of the bow-tie antenna. The numerical results obtained are in good agreement with the experimental data. Through experiments with bow-tie antennas of various extended angles, the bow-tie antenna with a 90° extended angle exhibits the widest bandwidth in the desired frequency band which has a bandwidth of 17% for a VSWR <1.5:1
Keywords :
antenna feeds; antenna radiation patterns; antenna testing; coplanar waveguides; integral equations; microstrip antennas; mobile antennas; 2.4 GHz; ISM band; UHF; VSWR; analysis method; antenna radiation patterns; balanced feed line; bandwidth; coplanar waveguide fed antenna; coplanar waveguide to coplanar strips balun; experimental data; extended angles; frequency band; input characteristics; mixed potential integral equation; mobile station antenna; printed bow tie antenna; uniplanar bow tie antenna; Antenna measurements; Bandwidth; Circuits; Coplanar waveguides; Dipole antennas; Feeds; Frequency; Impedance matching; Integral equations; Mobile antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
