A MIMO antenna with improved isolation using RFC for LTE mobile application

Multi-input Multi-output (MIMO) antenna with improved isolation using radio frequency choke (RFC) is proposed. By using RFC, the RF signal was suppressed at the desired frequency band, to improve the isolation between the two radiating elements. The isolation between the two radiating elements is improved by approximately 20 dB at the center frequency. The fabricated antenna has a VSWR below 3 and an envelope correlation coefficient below 0.4 in the long term evolution (LTE) band 13 from 746 MHz to 787 MHz.

[1]  Christian Waldschmidt,et al.  Complete RF system model for analysis of compact MIMO arrays , 2004, IEEE Transactions on Vehicular Technology.

[2]  Chi Ho Cheng,et al.  Reduction of Mutual Coupling Between Closely-Packed Antenna Elements , 2007, IEEE Transactions on Antennas and Propagation.

[3]  Charles R. Johnson,et al.  Matrix analysis , 1985, Statistical Inference for Engineers and Data Scientists.

[4]  M. J. Gans,et al.  On Limits of Wireless Communications in a Fading Environment when Using Multiple Antennas , 1998, Wirel. Pers. Commun..

[5]  Powen Hsu,et al.  Integrated Dual Planar Inverted-F Antenna With Enhanced Isolation , 2009, IEEE Antennas and Wireless Propagation Letters.

[6]  M. J. Gans,et al.  Channel Capacity Between Antenna Arrays— Part II: Amplifier Noise Dominates , 2006, IEEE Transactions on Communications.

[7]  David Gesbert,et al.  From theory to practice: an overview of MIMO space-time coded wireless systems , 2003, IEEE J. Sel. Areas Commun..

[8]  Michael A. Jensen,et al.  Mutual coupling in MIMO wireless systems: a rigorous network theory analysis , 2004, IEEE Transactions on Wireless Communications.