Improvement in radiation losses of spur line resonators based LPF on an EBG substrate

Article type: Research Article

Authors: Mukherjee, Biswajeet^{a; *} | Tiwari, Shashank^a | Samariya, Ajay Lal^a

Affiliations: [a] Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, India

Correspondence: [*] Corresponding author: Biswajeet Mukherjee, Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, India. E-mail: [email protected]

Abstract: Filters have always remained a field of immense interest in the high frequency domain. Emerging applications such as wireless communications continue to challenge RF/microwave filters with ever more stringent requirements-high performance, smaller size, lightweight, and lower cost. In this paper we propose and investigate the application of Electromagnetic Bandgap (EBG) structures for improving the performance of a stub type 5 pole Low Pass Filter with spur line resonators. Whereas the spur line resonators, improve the roll off factor significantly from −22.666 dB/GHz to −38.0893 dB/GHz, the effect of the EBG is evident in reducing the radiation losses of the spur line resonators and getting almost the same return loss and roll off factor.

Keywords: Filters, Electromagnetic Band Structures (EBG), roll off factor, radiation, return loss

DOI: 10.3233/JAE-121635

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 41, no. 4, pp. 447-455, 2013