High Gain and High Efficient Stacked Antenna Array with Integrated Horn for 60 GHz Communication Systems

Abstract EN

In order to achieve wide bandwidth and high gain, we propose a stacked antenna structure having a microstrip aperture coupled feeding technique with a mounted Horn integrated on it.

With optimized parameters, the single antenna element at a center frequency of 60 GHz, exhibits a wide impedance bandwidth of about 10.58% (58.9–65.25 GHz) with a gain and efficiency of 11.78 dB and 88%, respectively.

For improving the gain, we designed a 2 × 2 and 4 × 4 arrays with a corporate feed network.

The side lobe levels were minimized and the back radiations were reduced by making use of a reflector at λ / 4 distance from the corporate feed network.

The 2 × 2 array structure resulted in improved gain of 15.3 dB with efficiency of 83%, while the 4 × 4 array structure provided further gain improvement of 18.07 dB with 68.3% efficiency.

The proposed design is modelled in CST Microwave Studio.

The results are verified using HFSS, which are found to be in good agreement.