CSRR metamaterial based BPF with wide attenuation band

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sarbani Sen ◽  
Tamasi Moyra
Keyword(s):  
Parametric Study ◽  
Bandpass Filter ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Fractional Bandwidth ◽  
Split Ring ◽  
Complementary Split Ring Resonator ◽  
Centre Frequency

Abstract A bandpass filter (BPF) of 2.24 GHz centre frequency and 44.6% fractional bandwidth, with a wide attenuation band is proposed in this article. The paper is focused on the analysis of complementary split ring resonator (CSRR) as a unit section of metamaterial and its application in designing of a bandpass filter. The proposed BPF structure consists of a stepped impedance stub-loaded resonator incorporated with the CSRR to suppress the harmonics to improve the attenuation band characteristics. A brief parametric study of the CSRR cell is done to demonstrate its role while suppressing the unwanted harmonics. The structure is fabricated, and measured to show a consistency with the IE3D simulated results.

Design of a Compact Balanced Bandpass Filter based on CSRR-loaded Substrate Integrated Waveguide Structure

Frequenz ◽  
2018 ◽  
Vol 72 (7-8) ◽  
pp. 381-384
Author(s):  
Hao Zhang ◽  
Wei Kang ◽  
Wen Wu
Keyword(s):  
Bandpass Filter ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Substrate Integrated Waveguide ◽  
Differential Mode ◽  
Split Ring ◽  
Complementary Split Ring Resonator ◽  
Transmission Zeros ◽  
X Band ◽  
Good Agreement

Abstract A compact balanced bandpass filter (BPF) based on complementary split ring resonator (CSRR) -loaded substrate integrated waveguide (SIW) structure is reported in this paper. Both TE102 and TE201 modes of the SIW cavity can be excited under differential-mode (DM) operation with the proper positions of the balanced feeds. Meanwhile, the CSRR etched on the top layer of the substrate can also be excited by the axial electric excitation. Then, three transmission poles and two transmission zeros (TZs) have been obtained which improve the selectivity of the DM passband. To verify the above design concept, an X-band prototype operating at 8 GHz has been fabricated and measured. A good agreement is observed between the simulations and the measurements.

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