Miniaturized Ultra-wide Stopband Bandpass Filter for WiMAX Applications

الموضوعات :

Saeid Jafari ¹ , Farzin Shama ² , Abbas Ghadrdan ³ , Mohammad Saeed Feali ⁴ , Mohammad Amir Korani ⁵ , Mohammad Amir Sattari ⁶

1 - Department of Electrical Engineering, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran.
2 - Electrical Engineering Department, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
3 - Electrical Engineering Department, Shahed University, Theran, Iran
4 - Electrical Engineering Department, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
5 - Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
6 - Electrical Engineering Department, Faculty of Engineering, Razi University, Kermanshah, Iran

تاريخ الإرسال : 03 الأربعاء , ربيع الثاني, 1445 تاريخ التأكيد : 03 الجمعة , شوال, 1445 تاريخ الإصدار : 08 الأحد , محرم, 1446

الکلمات المفتاحية: Bandpass Filter, Microstrip, Miniaturized, Narrow-band,

ملخص المقالة :

In this research, a miniaturized narrow-band bandpass filter is presented. The design procedure has been started using a coupled structure and the final circuit has been bent to reduce the circuit size. The operational frequency is located at 3.6 GHz with an acceptable sharpness in the transition bands. In the passband, both the insertion and return loss are 0.6 and 27 dB, respectively. The obtained fractional bandwidth of the filter is about 2%, which is highly appropriate for a special-purpose narrow-band BPF. The presented BPF has been fabricated on an RT/Dourid5880 substrate. The obtained results of the fabricated circuit are consistent with the simulation one.