A Novel Coupler Based on HMSIW

In this letter, a broadband coupler is presented that makes use of a half mode substrate integrated waveguide (HMSIW) technique using a printed circuit board process. The coupler is realized by a parallel HMSIW line which couples energy by magnetic field. Compared with micro-strip coupler and conventional HMSIW coupler, it has lower loss and better Electromagnetic Compatibility owning to the closed field structure. Compared with SIW coupler, it has smaller size and lower cost owing to the half TE10 model. The coupler is simulated and measured at 8-12 GHz. Measured results show a good agreement with simulation.

[1]  Li Yan,et al.  Simulation and experiment on SIW slot array antennas , 2004 .

[2]  Ke Wu,et al.  The substrate integrated circuits - a new concept for high-frequency electronics and optoelectronics , 2003, 6th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Service, 2003. TELSIKS 2003..

[3]  J. S. Izadian,et al.  A new 6-18 GHz, -3 dB multisection hybrid coupler using asymmetric broadside, and edge coupled lines , 1989, IEEE MTT-S International Microwave Symposium Digest.

[4]  Ke Wu,et al.  Half Mode Substrate Integrated Waveguide (HMSIW) 3-dB Coupler , 2007, IEEE Microwave and Wireless Components Letters.

[5]  Wei Hong,et al.  Half Mode Substrate Integrated Waveguide: A New Guided Wave Structure for Microwave and Millimeter Wave Application , 2006, 2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics.

[6]  C. Y. Pon.  Hybrid-Ring Directional Coupler for Arbitrary Power Divisions , 1961 .

[7]  Wei Hong,et al.  Substrate integrated waveguide 180-degree narrow-wall directional coupler , 2005, 2005 Asia-Pacific Microwave Conference Proceedings.

[8]  K. Wu,et al.  Integrated microstrip and rectangular waveguide in planar form , 2001, IEEE Microwave and Wireless Components Letters.

[9]  F. Arndt,et al.  Field Theory Design of Rectangular Waveguide Multiple-Slot Narrow-Wall Couplers , 1986 .