A Dual-Polarization Slot Antenna Using a Compact CPW Feeding Structure

State Key Lab. of Microwave & Commun., Tsinghua Univ., Beijing, China
IEEE Antennas and Wireless Propagation Letters (Impact Factor: 1.58). 02/2010; 9:191 - 194. DOI: 10.1109/LAWP.2010.2044865
Source: IEEE Xplore


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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    • "Alternatively, Electromagnetic Band Gap (EBG) cells can be introduced to suppress coupling [4]. Defective ground structures [5][6], various neutralization methods [7][8], orthogonal feeding modes [9] and orthogonal elements [10] have also been investigated to achieve the optimum performance of a MIMO system. "
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    IEEE Antennas and Wireless Propagation Letters 02/2015; DOI:10.1109/LAWP.2014.2387701 · 1.58 Impact Factor
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    • "So it seems to be very essential to design adequate antenna due to use in MIMO systems. As revealed in many literatures [3] [4] [5] [6] [7] [8], both of non printed MIMO antennas such as planar-inverted F antennas (PIFAs) and printed MIMO antennas are proposed. However, among the antennas which are used for MIMO application, printed antennas are more appropriate due to their low cost, easy fabrication, and their capability of easily being integrated to small terminal devices. "
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    • "Isolation between RHCP and LHCP ports is a crucial issue for potential applications. However, due to the use of 90˚phase shifter, the principles for achieving good and wideband isolation are different to those presented in [9]. Fig. 10 illustrates the phase of the signal, which is reflected from the patch. "
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