scholarly journals Design of X-Bandpass Waveguide Chebyshev Filter Based on CSRR Metamaterial for Telecommunication Systems

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 101 ◽  
Author(s):  
Mahmoud AbuHussain ◽  
Ugur C. Hasar
Keyword(s):  
Coupling Effect ◽  
Parallel Line ◽  
Split Ring Resonator ◽  
Center Frequency ◽  
Physical Parameters ◽  
Complementary Split Ring Resonator ◽  
Lumped Elements ◽  
Waveguide Filter ◽  
Chebyshev Filter ◽  
Fifth Order

This paper presents a new design of a fifth order bandpass waveguide filter with Chebyshev response which operates in the X-band at 10 GHz center frequency. By using a complementary split ring resonator (CSRR) upper and lower sections that are placed on the same transverse plane and are not on the same parallel line, CSRR sections are shifted from each other. A simple model of lumped elements RLC is introduced and calculated as well. The model of the proposed bandpass waveguide filter is synthesized and designed by using computer simulation technology (CST). Hereafter, by selecting proper physical parameters and optimizing the overall CSRR geometrical dimensions by taking into consideration the coupling effect between resonators, a shortened length of the overall filter, and a wider bandwidth over the conventional one are obtained. As a result, the proposed filter is compared with the conventional bandpass waveguide filter that is coupled by inductive irises with Chebyshev response, in addition to other studies that have used the metamaterial technique. The proposed filter reduces the overall physical length by 31 % and enhances the bandwidth up to 37.5 % .

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

Low-profile, extremely wideband, dual-band-notched MIMO antenna for UWB applications

2019 ◽  
Vol 11 (7) ◽  
pp. 719-728 ◽  
Author(s):  
Ankan Bhattacharya ◽  
Bappadittya Roy ◽  
Rafael F. S. Caldeirinha ◽  
Anup K. Bhattacharjee
Keyword(s):  
Coupling Effect ◽  
Ground Plane ◽  
Multiple Input Multiple Output ◽  
Split Ring Resonator ◽  
Fine Tuning ◽  
Dual Band ◽  
Center Frequency ◽  
Impedance Bandwidth ◽  
Mimo Antenna ◽  
Low Profile

AbstractIn this article, an extremely wideband, isolation-enhanced, low-profile “Multiple-Input-Multiple-Output” (MIMO) antenna along with dual-band-notched features has been investigated. The antenna proposed herein, possesses two mutually orthogonal staircase-etched radiators for achieving a wide bandwidth. The radiating elements are placed mutually perpendicular in order to achieve polarization diversity and high isolation, i.e. for minimization of mutual coupling effect between adjacent radiating elements. The antenna exhibits an extremely wide frequency bandwidth covering 1.2–19.4 GHz except two frequency band notches centered at 3.5 and 5.5 GHz, respectively, originated due to the incorporation of a “Rectangular Complementary Split Ring Resonator (RCSRR)” structure and by etching dual “L-shaped” slits in the ground plane. The center frequency of the notched bands is adjusted by fine tuning of the dimensions of the incorporated band-notching structures. Isolation level (S21) better than −20 dB has been obtained due to the insertion of a “T-shaped” parasitic element as a decoupling structure. A prototype of the proposed antenna having dimension of 20 mm × 20 mm (0.08 λo × 0.08 λo) is fabricated and the antenna responses have been measured. Obtained results show that the miniaturized MIMO diversity antenna is undoubtedly a capable contender for communications supporting an extremely wide impedance bandwidth along with band-notched features for WLAN and WiMAX.

scholarly journals Complementary Split-Ring Resonator for Microwave Heating of µL Volumes in Microwells in Continuous Microfluidics

Chemosensors ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 184
Author(s):  
Tomislav Markovic ◽  
Gertjan Maenhout ◽  
Matko Martinic ◽  
Bart Nauwelaers
Keyword(s):  
Microwave Heating ◽  
Ring Resonator ◽  
Casting Process ◽  
Split Ring Resonator ◽  
Sample Volume ◽  
Split Ring ◽  
Complementary Split Ring Resonator ◽  
Microwave Dielectric ◽  
Electric Field Direction ◽  
Made In

This work presents the design and evaluation of a planar device for microwave heating of liquids in continuous microfluidics (CMF) made in polydimethylsiloxane (PDMS). It deals with volumes in the µL range, which are of high interest and relevance to biologists and chemists. The planar heater in this work is conceived around a complementary split-ring resonator (CSRR) topology that offers a desired electric field direction to—and interaction with—liquids in a microwell. The designed device on a 0.25 mm thick Rogers RO4350B substrate operates at around 2.5 GHz, while a CMF channel and a 2.45 µL microwell are manufactured in PDMS using the casting process. The evaluation of the performance of the designed heater is conducted using a fluorescent dye, Rhodamine B, dissolved in deionized water. Heating measurements are carried out using 1 W of power and the designed device achieves a temperature of 47 °C on a sample volume of 2.45 µL after 20 s of heating. Based on the achieved results, the CSRR topology has a large potential in microwave heating, in addition to the already demonstrated potential in microwave dielectric sensing, all proving the multifunctionality and reusability of single planar microwave-microfluidic devices.

Sign in / Sign up

Export Citation Format

Share Document