An ultra wide band filter with high selective dual notching

Hammad Y.T.; Fouda Z.K.; Abdalla M.A.

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An ultra wide band filter with high selective dual notching

Hammad Y.T.; Fouda Z.K.; Abdalla M.A.

Full Text link: https://ieeexplore.ieee.org/abstract/document/8073174

Date issued: 2017

Doi: https://doi.org/10.1109/APUSNCURSINRSM.2017.8073174

Publisher: Institute of Electrical and Electronics Engineers Inc.

Series Info: 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings
2017-January

Type: Conference Paper

Keywords: October University for Modern Sciences and Arts , جامعة أكتوبر للعلوم الحديثة والآداب , University of Modern Sciences and Arts , MSA University , Dual band filter , Filters , Multi-mode resonator (MMR) , Stub loaded , Wide band , Defected ground structures , Filters (for fluids) , Microwave filters , Notch filters , Resonators , Ultra-wideband (UWB) , Wireless local area networks (WLAN) , Band-pass filter (BPF) , Dual-band filter , Interference effects , Multi mode resonator (MMR) , Stepped impedance , Stepped impedance resonator , Stub loaded , Wide-band , Bandpass filters

Abstract:

This paper introduces an ultra-wide band (UWB) band pass filter (BPF) with a coupled T-shaped stub. The filter's lower cut-off frequency and higher cut-off frequency are around 3.2 GHz and 9.7 GHz respectively. Moreover, the pass band exhibits two narrow notches at 5.9 GHz and 7.8 GHz which minimize the interference effects of the proposed filter with both the wireless local area network (WLAN) and SATCOM systems, respectively. The main pass band of the filter and the upper notch are implemented using a stepped impedance resonator, coupled with an inter-digital feeding line backed by defected ground structures (DGS) for coupling augmentation. The lower notch band is implemented using a stepped impedance stub that is grounded through a via hole at one end and coupled to the main filter form at the other end. The proposed filter features a small size of 0.443�1.534 ?g2. � 2017 IEEE.