High Gain Superstrate Loaded Membrane Antenna Based on Substrate Integrated Waveguide Technology

الملخص EN

The design and the results of a single slot coupled substrate integrated waveguide (SIW) fed membrane antenna loaded with a superstrate layer are presented for 94 GHz communication system.

The membrane antenna is designed using ANSYS HFSS and consists of 6 layers.

The microstrip patch antenna (MPA) placed on the top pyralux substrate layer is excited by means of a longitudinal rectangular slot placed over the SIW structure in the bottom pyralux substrate.

The simulated antenna impedance bandwidth is found to be 5 GHz (91.5–96.5 GHz) with a gain of 7 dBi.

In order to improve the gain a superstrate layer is added above the membrane antenna.

The maximum gain achieved is 14.4 dBi with an efficiency of 77.6% at 94 GHz.

The results are verified using CST Microwave Studio and are found to be in good agreement.