A novel asymmetrical interdigital coupled line‐based penta‐band bandpass filter design with enhanced selectivity employing square complementary split ring resonator

2021 ◽  
Author(s):  
Parthasarathy Ramanujam ◽  
Krishnamurthy Ramanujam ◽  
Manimaran Ponnusamy
Keyword(s):  
Bandpass Filter ◽  
Ring Resonator ◽  
Filter Design ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Coupled Line ◽  
Complementary Split Ring Resonator ◽  
Enhanced Selectivity

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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