Yd. Lin et Sn. Tsai, ANALYSIS AND DESIGN OF BROADSIDE-COUPLED STRIPLINES-FED BOW-TIE ANTENNAS, IEEE transactions on antennas and propagation, 46(3), 1998, pp. 459-460
The design of a bow-tie antenna fed by broadside-coupled striplines (B
CS) for the 2.4-GHz ISM band is described in this letter. The two fins
of the bow tie are, respectively, on the two sides of the substrate.
The feeding balanced lines adopted are the BCS. A quarter-wave transfo
rmer Is used to transform the microtrip line input to the BCS feed. An
alysis method based on the mixed-potential integral equation method is
used to characterize the input characteristics of the bow-tie antenna
. Obtained numerical results are in good agreement with experimental d
ata. Through experiments with bow-tie antennas of various extended ang
les, the bow-tie antenna with a 90 degrees extended angle exhibits the
widest bandwidth in the desired frequency band, which has a bandwidth
of 19% for VSWR < 1.5:1.