A Dual Polarization Bow-tie Slot Antenna for Broadband Communications

A dual polarization bow-tie slot antenna for broadband communications is proposed in this paper. This antenna consists of two bow-tie slot antennas which is perpendicular to each other and with coplanar waveguide (CPW)-fed. The proposed antenna has a very simple antenna structure and wide impedance bandwidth (similar to 400% for vertical bar S-11 vertical bar and vertical bar S-22 vertical bar >= 10 dB) which can cover the 1.5 similar to 6 GHz frequency band for Global Positioning System (GPS, 1575 MHz) and dual ISM band (2.4 GHz and 5.8 GHz) applications. Good isolation between the two input ports (vertical bar S-21 vertical bar >= 20 dB) is also achieved at the operating band. The radiation pattern and efficiency of the proposed antenna are also measured, and radiation pattern data are compared with simulation results.