Compact microstrip low-pass filter using complementary split ring resonators with ultra-wide stopband and high selectivity

2009 ◽  
Vol 52 (2) ◽  
pp. 430-433 ◽  
Author(s):  
Hui-Yong Zeng ◽  
Guang-Ming Wang ◽  
Chen-Xin Zhang ◽  
Li Zhu
Keyword(s):  
High Selectivity ◽  
Ring Resonators ◽  
Split Ring ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Split Ring Resonators ◽  
Low Pass

Design of THz low pass filter using split-ring resonators

Optik ◽  
2021 ◽  
Vol 247 ◽  
pp. 167925
Author(s):  
Joy Singh ◽  
Sudhanshu Kumar Jha ◽  
Vimlesh Singh ◽  
Y.K. Awasthi
Keyword(s):  
Ring Resonators ◽  
Split Ring ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Split Ring Resonators ◽  
Low Pass

A New Low-Pass Filter in Asymmetrical Finline Topology Using Split-Ring Resonators

2012 ◽  
Vol 10 (2) ◽  
pp. 1445-1451 ◽  
Author(s):  
Alain Leon ◽  
Alicia Casanueva ◽  
Jaime Cagigas ◽  
Angel Mediavilla
Keyword(s):  
Ring Resonators ◽  
Split Ring ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Split Ring Resonators ◽  
Low Pass

scholarly journals A Compact Planar Low-Pass Filter Based on SRR-Metamateria

2018 ◽  
Vol 8 (6) ◽  
pp. 4972
Author(s):  
Badr Nasiri ◽  
Ahmed Errkik ◽  
Jamal Zbitou ◽  
Abdelali Tajmouati ◽  
Larbi El Abdellaoui ◽  
...  
Keyword(s):  
Cutoff Frequency ◽  
Total Surface Area ◽  
Ring Resonators ◽  
Split Ring ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Attenuation Level ◽  
Low Pass ◽  
Novel Design ◽  
Good Agreement

In this work, a novel design of a Microstrip Low-pass filter based on metamaterial square split ring resonators (SRRs) is proposed. The SRRs has been added to obtain a reduced size and high performances. The filter is designed on an FR-4 substrate having a thickness of 1.6mm, a dielectric constant of 4.4 and loss tangent of 0.025. The proposed low-pass filter is characterized by a cutoff frequency of 2.4 GHz and an attenuation level below than -20dB in the stopband. The LPF is designed, simulated and optimized by using two electromagnetic solvers CST microwave studio and ADS. The computed results obtained by both solvers are in good agreement. The total surface area of the proposed circuit is 18x18mm2 excluding the feed line, its size is miniaturized by 40% compared to the conventional filter. The experimental results illustrate that the filter achieves very good electrical performances in the passband with a low insertion loss of 0.2 dB. Moreover, a suppression level can reach more than 35 dB in the rejected band.

Flexible Metamaterials RF Filters Implemented through Micromachining LCP Substrates

2011 ◽  
Vol 2011 (DPC) ◽  
pp. 000555-000579
Author(s):  
Jonathan Richard ◽  
Robert Dean
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Flexible Substrate ◽  
Ring Resonators ◽  
Split Ring ◽  
Pass Filter ◽  
Split Ring Resonators ◽  
Wide Range ◽  
In Series ◽  
Invisibility Cloaks

Metamaterials have a wide range of potential uses in areas such as optics, transmission lines, and RF design. The simplest metamaterial structures are Split-Ring Resonators (SRR) and Complementary Split-Ring Resonators (CSSR). Through the combination of various forms of these structures, different applications in the areas previously stated can be achieved. Under this investigation, a metamaterials transmission line was realized through micromachining a Liquid Crystal Polymer (LCP) substrate. Not only does LCP possess useful RF properties, it can also be easily micromachined. This transmission line consisted of several CSSRs in series, which performed as a high-order, high-frequency high-pass filter. This structure was unique to most metamaterial structures because LCP is a flexible substrate. It was observed that the resonant frequency of the filter did not change when the LCP transmission line was flexed in various ways. Next, micromachined vias were etched through the LCP substrate to demonstrate that these features do not affect the filter's response. Through utilization of these vias, the metamaterial structures can be physically conformed to nearly any shape or mounted onto another object without affecting the filter's response. As demonstrated in a simple filter structure, the shape manipulation has very little effect. Theoretically, extrapolating these methods to the development of metamaterials 3D RF invisibility cloaks, that are easily realizable and mountable onto an object, could prove useful.

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