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Meander Open Complementary Split Ring Resonator (MOCSRR) Particles Implemented
Using Coplanar Waveguides
Benjamin D. Braaten*Masud A. Aziz
Mark J. SchroederHongxiang Li
North Dakota State University: Applied Electromagnetics Lab
Topics
Introduction and Background The MOCSRR Particle Modeling the MOCSRR Particle Discussion Conclusion
North Dakota State University: Applied Electromagnetics Lab
Introduction and Background
[1] A. Velez, F. Aznar, J. Bonache, M. C. Valazquez-Ahumada, J. Martel and F. Martin, “Open complementary split ring resonators (OCSRRs) and their application to wideband CPW band pass filters,” IEEE Microwave and Wireless Component Letters, vol. 19, no. 4, pp. 197-199, Apr. 2009.
The open complementary split ring resonator (OCSRR) particle [1]:
North Dakota State University: Applied Electromagnetics Lab
Introduction and Background
[2] B. D. Braaten, “A novel compact UHF RFID tag antenna designed using series connected open complementary split ring resonator (OCSRR) particle,” Accepted for publication in the IEEE Transactions on Antennas and Propagation.
The OCSRR particle has been used to design small resonant antennas [2]:
North Dakota State University: Applied Electromagnetics Lab
The MOCSRR Particle
The meander open complementary split ring resonator (MOCSRR) particle:
North Dakota State University: Applied Electromagnetics Lab
Modeling the MOCSRR Particle
M = 1.0 mm, N = 3.64 mm, d = 1.27 mmDuroid 6010
CPW structure used to measure the MOCSRR particle:
North Dakota State University: Applied Electromagnetics Lab
Modeling the MOCSRR Particle
W = 10.4 mmH = 10.4 mmp = 0.35 mmh = 6.4 mmr = 3.2 mmg = 0.6 mmt = 0.6 mmq = 0.3 mmd = 3.61 mmv = 0.6 mms = 1.0 mm
Dimensions:
North Dakota State University: Applied Electromagnetics Lab
Modeling the MOCSRR Particle
Printed MOCSRR particle: S-parameters:
Leq = 9.25 nHCeq = 5.1 pFfo = 735 MHz
Leq = 11.21 nHCeq = 2.24 pFfo = 1.0 GHz
OCSRR
North Dakota State University: Applied Electromagnetics Lab
Modeling the MOCSRR Particle
Surface currents on the MOCSRR Particle:
North Dakota State University: Applied Electromagnetics Lab
Modeling the MOCSRR ParticleProperties of the MOCSRR particle for various values of r and δ :
δ r Leq (nH) Ceq (pF) fo (GHz)
0.9 1.6 3.6 2.9 1.55
1.0 1.7 3.8 2.75 1.55
1.1 1.8 3.7 2.85 1.55
1.2 1.9 3.4 3.1 1.55
1.3 2.0 3.4 3.15 1.53
1.4 2.1 3.5 3.1 1.52
1.5 2.2 3.7 3.25 1.45
North Dakota State University: Applied Electromagnetics Lab
W = 8.2 mmH = 8.2 mmt = 0.33 mmg = 0.31mm
Modeling the MOCSRR Particle
Properties of the MOCSRR particle for various scaling values S:
S Leq (nH) Ceq (pF) fo (GHz)
0.7 2.4 2.25 2.16
0.75 2.7 2.45 1.95
0.8 2.9 2.6 1.83
0.85 2.9 2.9 1.73
0.9 3.2 2.95 1.63
0.95 3.4 3.1 1.53
1.0 3.7 3.25 1.45
North Dakota State University: Applied Electromagnetics Lab
Modeling the OCSRR Particle
Properties of the OCSRR particle for various values of ro:
ro Leq (nH) Ceq (pF) fo (GHz)
1.0 1.5 2.95 2.39
1.2 1.5 2.95 2.39
1.4 1.5 3.0 2.37
1.6 1.5 3.0 2.37
1.8 1.4 3.25 2.35
2.0 1.7 3.05 2.2
2.2 1.7 3.05 2.2
North Dakota State University: Applied Electromagnetics Lab
m = 8.1 mmn = 8.3 mmh = 0.45 mmg = 0.51mm
Modeling the OCSRR Particle
Properties of the OCSRR particle for various scaling values S:
S Leq (nH) Ceq (pF) fo (GHz)
0.7 1.0 2.85 2.98
0.75 1.1 2.9 2.81
0.8 1.3 2.85 2.61
0.85 1.3 3.2 2.56
0.9 1.4 3.15 2.39
0.95 1.4 3.25 2.35
1.0 1.7 3.05 2.2
North Dakota State University: Applied Electromagnetics Lab
Discussion
S Leq (nH)
Ceq (pF)
fo (GHz)
(MOCSRR)
0.7 2.4 2.25 2.16
0.75 2.7 2.45 1.95
0.8 2.9 2.6 1.83
0.85 2.9 2.9 1.73
0.9 3.2 2.95 1.63
0.95 3.4 3.1 1.53
1.0 3.7 3.25 1.45
The MOCSRR particle has a resonant frequency lower than the OCSRR particle with the same over all dimensions:
S Leq (nH)
Ceq (pF)
fo (GHz)
(OCSRR)
0.7 1.0 2.85 2.98
0.75 1.1 2.9 2.81
0.8 1.3 2.85 2.61
0.85 1.3 3.2 2.56
0.9 1.4 3.15 2.39
0.95 1.4 3.25 2.35
1.0 1.7 3.05 2.2
North Dakota State University: Applied Electromagnetics Lab
Discussion Designing antennas [3]:
North Dakota State University: Applied Electromagnetics Lab
[3] B. D. Braaten and M. A. Aziz, “Using meander open complementary split ring resonator (MOCSRR) particles to design a compact UHF RFID tag antenna,” Under review for the Antennas and Wireless Propagation Letters.
Conclusion
A new meander open complementary split ring resonator particle based on the open complementary split ring resonator particle has been presented.
It has been shown that the MOCSRR particle has a lower resonant frequency than the OCSRR particle with similar over all dimensions.
Also, the equivalent circuit for various OCSRR and MOCSRR particles was extracted and presented. These results showed that in certain circumstances is was
possible to predict the resonant frequency of the particle. Finally, this was followed by a discussion on
antenna design using the MOCSRR particles.
North Dakota State University: Applied Electromagnetics Lab
Questions
Thank you for listening!
North Dakota State University: Applied Electromagnetics Lab
