Analysis and Design of Low Pass Filter using Unit Cell based on CRLH Transmission Line
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In this paper, a unit cell for low pass filter design by using composite right and left-handed transmission line in conductor-backed coplanar waveguide is proposed. The characteristics of the unit cell are analyzed in order to design a low pass filter in small sizes. By changing the sizes of the unit cell, the parameters of right-handed and left-handed immittance components are changed and the desired characteristics of the unit cell are achieved. The equivalent circuit of the unit cell is extracted and analyzed either. As a result, the simulation results of the unit cell and the equivalent circuit are almost identified. The movement and energy distributions of electromagnetic field are shown to confirm the property of the unit cell. In the end, a low pass filter is demonstrated by cascading three proposed unit cells, which shows cutoff frequency of 1.53GHz and deep attenuation from 2.23GHz to 4.49GHz lower than -50dB.
Abstract
In this paper, a unit cell for low pass filter design by using composite right and left-handed transmission line in conductor-backed coplanar waveguide is proposed. The characteristics of the unit cell are analyzed in order to design a low pass filter in small sizes. By changing the sizes of the unit cell, the parameters of right-handed and left-handed immittance components are changed and the desired characteristics of the unit cell are achieved. The equivalent circuit of the unit cell is extracted and analyzed either. As a result, the simulation results of the unit cell and the equivalent circuit are almost identified. The movement and energy distributions of electromagnetic field are shown to confirm the property of the unit cell. In the end, a low pass filter is demonstrated by cascading three proposed unit cells, which shows cutoff frequency of 1.53GHz and deep attenuation from 2.23GHz to 4.49GHz lower than -50dB.
참고문헌 (16)
- V. Veselago, "The electrodynamics of substances with simultaneously negative values of ε and μ", Soviet Physics Uspekhi, 10(4), pp.509~514 (1968)
- D. R. Smith, "Composite medium with simultaneously negative permeability and permittivity", Phys. Rev. Lett., 84(18), pp.4184~4187 (2000)
- C. Caloz, "Electromagnetic metamaterials: transmission line theory and microwave applications" (2006), John Wiley & Sons, Inc.
- C. Caloz, "Novel microwave devices and structures based on the transmission line approach of meta-materials", Microwave Symposium Digest, IEEE MTT-S International, 1, pp.195~198 (2003)
- A. L, "Composite right", lefthanded transmission line metamaterials, 2004, 34~50
- Qi Zhu, "Composite right", left handed transmission line metamaterials and applications, 2008, 72~75
- J. Garcia-Garcia, "Miniaturization and optimization of planar microwave filters based on metamaterials", Micro. Conf. 2007, pp.500~503 (2007)
- Pan Pan, "A novel compact left-handed transmission line with improved split-ring resonators", Micro. Conf. APMC 2007, pp.1~4 (2007)
- Rainee N. Simons, "Coplanar waveguide circuits, components, and systems", pp.87~109 (2001), John Wiley & Sons, Inc.
- Cheng P. Wen, "Coplanar waveguide: a surface strip transmission line suitable for nonreciprocal gyromagnetic device applications", IEEE Trans. Micro. Theory Tech., 17(12), pp.1087~1090 (1969)
- Giovanni Ghione, "Coplanar waveguides for MMIC applications: effect of upper shielding, conductor backing, finite-extent ground planes, and line-to-line coupling", IEEE Trans. Micro. Theory Tech., 35(3), pp.260~267 (2003)
- Y.C. Shih, "Analysis of conductor-backed coplanar waveguide", Electron. Lett., 18(12), pp.538~540 (1982)
- microwave applications, "Microstrip filters for RF", pp.2001, Jia-Sheng Hong
- Dong-Ryong Kim, "Modern network synthesis theory and filter design", pp.77~82 (1998), Hongrueng Science Pub.
- Kwangsik Park, "A new open stubs structure of Kuroda low-pass filter using DGS", Wireless and Microwave Tech. Conf., WAMICON ’09, pp.1~4 (2009)
- Haojia Lin, "A wide stopband CPW low pass filter using quarter wavelength stepped impedance resonators", ICMMT Conf., pp.62~65 (2010)