General Decoupling Network Design Between Two Coupled Antennas for MIMO Applications

A general design procedure of decoupling networks, between two coupled antennas, is proposed using a single transmission line connected between the input ports of the antennas at a specifled distance. A rigorous analysis for the decoupling circuit is introduced considering the return loss of the antennas into calculations. Furthermore, using numerical optimization, enhancement of decoupling between the antenna ports achieved. Full-wave analysis and measurements are provided to verify the proposed technique.

[1]  J. C. Coetzee,et al.  Dual-Frequency Decoupling for Two Distinct Antennas , 2012, IEEE Antennas and Wireless Propagation Letters.

[2]  Buon Kiong Lau,et al.  Simple and Efficient Decoupling of Compact Arrays With Parasitic Scatterers , 2012, IEEE Transactions on Antennas and Propagation.

[3]  J. Andersen,et al.  Decoupling and descattering networks for antennas , 1976 .

[4]  Jacob Coetzee,et al.  Dual-Frequency Decoupling Networks for Compact Antenna Arrays , 2011 .

[5]  M. Bait-Suwailam,et al.  Electromagnetic Coupling Reduction in High-Profile Monopole Antennas Using Single-Negative Magnetic Metamaterials for MIMO Applications , 2010, IEEE Transactions on Antennas and Propagation.

[6]  Q. Chu,et al.  Tri-Band Four-Element MIMO Antenna with High Isolation , 2011 .

[7]  A. Diallo,et al.  Study and Reduction of the Mutual Coupling Between Two Mobile Phone PIFAs Operating in the DCS1800 and UMTS Bands , 2006, IEEE Transactions on Antennas and Propagation.

[8]  Ekmel Ozbay,et al.  Decoupling of multifrequency dipole antenna arrays for microwave imaging applications , 2010 .

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

[10]  S. Stein.  On cross coupling in multiple-beam antennas , 1962 .

[11]  Jordi Romeu Robert,et al.  Exact representation of antenna system diversity performance from input parameter description , 2003 .

[12]  Yingzeng Yin,et al.  EIGENMODE DECOUPLING FOR MIMO LOOP-ANTENNA BASED ON 180 - COUPLER , 2011 .

[13]  H. Wheeler,et al.  Small antennas , 1975 .

[14]  J. Romeu,et al.  Novel design methodology of matching networks based on the use of symmetry operators , 2009, 2009 IEEE Antennas and Propagation Society International Symposium.

[15]  Beza Negash Getu,et al.  The MIMO cube - a compact MIMO antenna , 2002, The 5th International Symposium on Wireless Personal Multimedia Communications.

[16]  J. Romeu,et al.  Optimum antenna matching to minimise signal correlation on a two-port antenna diversity system , 2004 .

[17]  Sailing He,et al.  Mutual Coupling Reduction of Two PIFAs With a T-Shape Slot Impedance Transformer for MIMO Mobile Terminals , 2012, IEEE Transactions on Antennas and Propagation.

[18]  Zhijun Zhang,et al.  A Compact Eighteen-Port Antenna Cube for MIMO Systems , 2012, IEEE Transactions on Antennas and Propagation.

[19]  Cheng-Tse Lee,et al.  Printed MIMO-Antenna System Using Neutralization-Line Technique for Wireless USB-Dongle Applications , 2012, IEEE Transactions on Antennas and Propagation.

[20]  Helmut Bölcskei,et al.  An overview of MIMO communications - a key to gigabit wireless , 2004, Proceedings of the IEEE.

[21]  D. Pozar.  Microwave Engineering , 1990 .

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

[23]  Shyh-Jong Chung,et al.  A Decoupling Technique for Increasing the Port Isolation Between Two Strongly Coupled Antennas , 2008 .