scholarly journals A Frequency-Tunable SRR-Adopted Two-Pole Waveguide Filter Operating below the Cutoff Frequency

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Wook-Ki Park ◽  
Hyun-Yong Lim ◽  
Dong-Woo Kim ◽  
Soon-soo Oh
Keyword(s):  
Software Defined Radio ◽  
Ring Resonator ◽  
Cutoff Frequency ◽  
Split Ring Resonator ◽  
Tunable Filter ◽  
Split Ring ◽  
Operating Frequency Range ◽  
Waveguide Filter ◽  
Frequency Tunable ◽  
The Magnetic Field

A frequency-tunable filter operating below the cutoff frequency of a metallic hollow waveguide is proposed, which has two-pole bandpass characteristics and incorporates a split-ring resonator (SRR). The tuning procedure is achieved by inserting two metal screws. The screws adjust the magnetic- field passing through the center of the SRR. The effect of SRR orientation was investigated and the optimum orientation proposed. Our results indicated an operating frequency range of 2.0 to 2.35 GHz, which is lower than the cutoff frequency of the waveguide of 4.9 GHz by more than 2.55 GHz. The proposed filter could be utilized for communication, such as software-defined radio (SDR) systems.

scholarly journals Tunable Terahertz Metamaterial Using an Electric Split-Ring Resonator with Polarization-Sensitive Characteristic

2020 ◽  
Vol 10 (13) ◽  
pp. 4660 ◽  
Author(s):  
Tao Xu ◽  
Yu-Sheng Lin
Keyword(s):  
Ring Resonator ◽  
Split Ring Resonator ◽  
Transverse Magnetic ◽  
Tunable Filter ◽  
Dual Band ◽  
Central Metal ◽  
Split Ring ◽  
Free Spectrum ◽  
Electromagnetic Responses ◽  
Triple Band

We present a tunable terahertz (THz) metamaterial using an electric split-ring resonator (eSRR), which exhibits polarization-sensitive characteristics. The proposed eSRR is composed of double symmetrical semicircles and two central metal bars. By changing the lengths of two metal bars, the electromagnetic responses can be tuned and switched between dual-band and triple-band resonances in transverse magnetic (TM) mode. Furthermore, by moving the bottom metal bar to change the gap between the two metal bars, the first resonance is stable at 0.39 THz, and the second resonance is gradually blue-shifted from 0.83 to 1.33 THz. The tuning range is 0.50 THz. This means that the free spectrum ranges (FSR) could be broadened by 0.50 THz. This proposed device exhibits a dual-/triple-band switch, tunable filter, tunable FSR and polarization-dependent characteristics. It provides an effective approach to perform tunable polarizer, sensor, switch, filter and other optoelectronics in THz-wave applications.

Compact Bandstop Half-Mode Substrate Integrated Waveguide Filter Based on a Broadside-Coupled Open Split-Ring Resonator

2018 ◽  
Vol 66 (6) ◽  
pp. 3001-3010 ◽  
Author(s):  
Juan Hinojosa ◽  
Marcello Rossi ◽  
Adrian Saura-Rodenas ◽  
Alejandro Alvarez-Melcon ◽  
Felix Lorenzo Martinez-Viviente
Keyword(s):  
Ring Resonator ◽  
Split Ring Resonator ◽  
Substrate Integrated Waveguide ◽  
Split Ring ◽  
Waveguide Filter

Design of Compact Highpass Filter for 5G mm-wave Applications Using Complementary Split Ring Resonator

Frequenz ◽  
2020 ◽  
Vol 74 (5-6) ◽  
pp. 177-181 ◽  
Author(s):  
Parthasarathy Ramanujam ◽  
P. G. Ramesh Venkatesan ◽  
Chandrasekar Arumugam ◽  
Manimaran Ponusamy
Keyword(s):  
Insertion Loss ◽  
Ring Resonator ◽  
Cutoff Frequency ◽  
Equivalent Circuit Model ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Left Hand ◽  
Complementary Split Ring Resonator ◽  
Wide Range ◽  
Highpass Filter

AbstractThis article presents a design of highpass filter (HPF) for millimeter-wave (mm-wave) applications using a square complementary split-ring resonator (SCSRR). A miniaturized size HPF filter is obtained by overlapping the Right-Hand (RH) and Left-Hand material. The arrangement of inter-digital parallel coupled capacitor and SCSRR offers low insertion loss, high selectivity with a sharp roll-off factor over a wide bandwidth of 15.9 GHz (from 34.1 to 50 GHz). Generally, SCSRR offers narrow passband/stopband however this prototype has a passband over a wide range of frequency. The proposed HPF has an appreciable agreement between simulated and fabricated results. Further, the filter is realized in the equivalent circuit model and their electrical elements functions are also discussed. This prototype has a cut-off frequency (fc) of 34.1 GHz with a maximum passband insertion loss of 1.45 dB. The fabricated area of the filter is 0.16λg × 0.09λg × λg and where λg is the guided wavelength at cutoff frequency fc.

Complementary split-ring resonator for compact waveguide filter design

2005 ◽  
Vol 46 (1) ◽  
pp. 88-92 ◽  
Author(s):  
N. Ortiz ◽  
J. D. Baena ◽  
M. Beruete ◽  
F. Falcone ◽  
M. A. G. Laso ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Filter Design ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Complementary Split Ring Resonator ◽  
Waveguide Filter ◽  
Compact Waveguide
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