A Dual-Polarization Slot Antenna Using a Compact CPW Feeding Structure
ABSTRACT A dual-polarization coplanar waveguide (CPW)-fed slot antenna is proposed in this letter. By exploiting the even and odd modes of a CPW structure, two orthogonal polarizations can be excited in a slot aperture by the same feeding CPW, which results in a compact dual-polarization antenna design with very good isolation between the ports. The -10-dB reflection coefficient bandwidths of two polarizations are 670 MHz (27.9%) for one polarization and 850 MHz (35.4%) for the other, and the isolation between the two ports in the WLAN band is better than -32.6 dB. The radiation pattern and efficiency of the proposed antenna are also measured, and radiation pattern data are compared with simulation results.
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ABSTRACT: In this letter, a bidirectional high-gain antenna is proposed for wireless communication in tunnels or coal mines. The antenna consists of six rectangular rings in cascade and works in a standing-wave mode. The high-gain bidirectional radiation property is realized by the currents distributed in-phase on the vertical edges. The dimensions of the proposed ring are 300 × 16 × 0.6 mm3 (2.4λ × 0.128λ × 0.005λ at 2.4 GHz). The measured -10-dB bandwidth is approximately 290 MHz (2.33-2.62 GHz), the measured peak gain is 9.5 dBi, and the 1-dB gain bandwidth is about 110 MHz (2.34-2.45 GHz). The experimental results are presented and discussed, and it is shown that the proposed bidirectional antenna inherits the merits of high directional radiation gain, low profile, easy fabrication, and low wind resistance.IEEE Antennas and Wireless Propagation Letters 01/2013; 12:761-764. · 1.95 Impact Factor
Conference Paper: A slot dipole antenna with polarization diversity for WLAN application[Show abstract] [Hide abstract]
ABSTRACT: A slot dipole antenna with polarization diversity for wireless local area networks application is proposed. The proposed design has a very simple antenna structure. The two orthogonal polarizations of the proposed antenna are excited by the two modes of the coplanar waveguide feed, making the overall dimension compact. Details of the antenna design and simulation and measurement results are presented and discussed.Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE; 01/2012
Conference Paper: A single layer dual-polarization printed bow-tie broadband antenna[Show abstract] [Hide abstract]
ABSTRACT: A single layer dual-polarization coplanar waveguide (CPW)-fed bow-tie slot antenna for broadband communications is proposed in this literature. The proposed antenna has a very simple antenna structure and wide impedance bandwidth (~400% for|S11|and|S22|≤ -10dB) which can cover the 1.5 ~6 GHz frequency band for Global Positioning System (GPS, 1575MHz) and dual ISM band (2.4GHz and 5.8GHz) applications. Good isolation between the two input ports (|S21|≤ -20dB) 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.Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE; 01/2012