Planar antipodal linearly tapered slot antenna using grounded coplanar waveguide-to-substrate integrated waveguide transition for passive millimeter-wave imaging

In this work, a novel antipodal linearly tapered slot antenna (ALTSA) with two types of grounded coplanar waveguide (GCPW)-to-substrate integrated waveguide (SIW) transitions are proposed and demonstrated. The antenna is well designed for using as a feed antenna in the focal plane array (FPA) imaging system. PCB technology is used to fabricate the SIW antenna in a single layer structure. Good agreement was obtained between the simulation and measurement results. The return loss of the proposed antenna can achieve below -13dB at Ka-band, meanwhile, the E-plane side lobe is almost 15dB down. When placed on the focal plane of a reflector antenna, its side lobe dropped to 40dB down, which shows its high suitability for passive millimeter-wave (PMMW) FPA imaging system.

[1]  Fang Lili,et al.  LTSA with microstrip-slotline transition for MFPA imaging systems , 2011, 2011 IEEE International Conference on Microwave Technology & Computational Electromagnetics.

[2]  D. Deslandes.  Design equations for tapered microstrip-to-Substrate Integrated Waveguide transitions , 2010, 2010 IEEE MTT-S International Microwave Symposium.

[3]  Ke Wu,et al.  Planar High-Gain Dielectric-Loaded Antipodal Linearly Tapered Slot Antenna for $E$ - and $W$ -Band Gigabyte Point-to-Point Wireless Services , 2013, IEEE Transactions on Antennas and Propagation.

[4]  J.V. Morro,et al.  Efficient Technique for the Cascade Connection of Multiple Two-Port Scattering Matrices , 2007, IEEE Transactions on Microwave Theory and Techniques.

[5]  Songnan Yang,et al.  Antennas and Arrays for Mobile Platforms -- Direct Broadcast Satellite and Wireless Communication , 2008 .

[6]  L. Yujiri,et al.  Passive Millimeter Wave Imaging , 2003, 2006 IEEE MTT-S International Microwave Symposium Digest.

[7]  Aly E. Fathy,et al.  DEVELOPMENT OF A NOVEL UWB VIVALDI ANTENNA ARRAY USING SIW TECHNOLOGY , 2009 .

[8]  Angel Belenguer,et al.  Improvement for the design equations for tapered Microstrip-to-Substrate Integrated Waveguide transitions , 2011, 2011 International Conference on Electromagnetics in Advanced Applications.