Open AccessDual band Stepped Impedance Interdigital Microstrip Filter for LTE Bands
Author(s) -
J. William,
Cavin Roger Nunes,
Savio Sebastian Dias,
Siddhi Suresh Parab,
Varsha Shantaram Hatkar
Publication year - 2019
Publication title -
european journal of engineering and technology research
Language(s) - English
Resource type - Journals
ISSN - 2506-8016
DOI - 10.24018/ejers.2019.4.7.1407
Subject(s) - passband , stopband , band pass filter , elliptic filter , materials science , filter (signal processing) , resonator , microstrip , band stop filter , prototype filter , electronic engineering , butterworth filter , multi band device , acoustics , m derived filter , optoelectronics , low pass filter , electrical engineering , computer science , physics , telecommunications , engineering , antenna (radio)
In this paper, a dual band microstrip bandpass filter has been proposed utilizing three edge coupled resonators, interdigital stubs and DGS technique. To enhance the coupling degree, two interdigital coupled feed lines are employed in this filter. The suppressing cell consists of stepped impedance ladder type resonators, which provides a wide stopband. The proposed suppressing cell has clear advantages like low insertion loss in the passband and suitable roll off. The frequency response of the filter looks like a standard dual band band-pass filter. The filter exhibits a dual passband with resonant frequencies at 2.2GHz and 3.45GHz covers LTE1 and LTE22 bands.
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