This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Coplanar waveguide (CPW) has a huge demand for designing band-pass filter (BPF). In this study, the filter designed by open-ended CPW series stub which acts as a resonant circuit thus giving a band-pass response. As the number of open stub discontinuity is increased, the frequency response and roll-off rate of the proposed BPF has improved gradually. Electromagnetic simulated and measured results show a very good agreement with each other. The proposed filter is designed to obtain a frequency range of 1.97–4 GHz (S-band) having rising edge and falling edge selectivities of 35.9 and 45.7 dB/GHz, respectively.
References
-
-
1)
-
3. Dib, N.I., Katehi, L.P.B., Ponchak, G.E., Simons, R.N.: ‘Theoretical and experimental characterization of coplanar waveguide discontinuities for filter applications’, IEEE Trans. Microw. Theory Tech., 1991, 39, pp. 873–882 (doi: 10.1109/22.79116).
-
2)
-
2. Simons, R.N., Ponchak, G.E.L.: ‘Modeling of some coplanar waveguide discontinuities’, IEEE Trans. Microw. Theory Tech., 1988, 36, pp. 1796–1803 (doi: 10.1109/22.17415).
-
3)
-
4. Hettak, K., Dib, N., Sheta, A.-F., Toutain, S.: ‘A class of novel uniplanar series resonators and their implementation in original applications’, IEEE Trans. Microw., 1998, 46, (9), pp. 1270–1276 (doi: 10.1109/22.709469).
-
4)
-
5. Rainee, N.S.: ‘Coplanar wave guide circuits, components, and systems’ (John Wiley & Sons Inc., New York, NY, 2001), pp. 272–274.
-
5)
-
R.N. Simons ,
G.E. Ponchak
.
Modeling of some coplanar waveguide discontinuities.
IEEE Trans. Microw. Theory Tech.
,
12 ,
1796 -
1803
-
6)
-
K. Hettak ,
N. Dib ,
A.F. Sheta ,
S. Toutain
.
A class of novel uniplanar series resonators and their implementation in original applications.
IEEE Trans. Microw. Theory Tech.
,
9 ,
1270 -
1276
-
7)
-
6. Weller, T.M., Katehi, L.P.: ‘Miniature stub and filter designs using the microshield transmission line’. IEEE MTT-S Digest, 1995, 2, pp. 675–678.
-
8)
-
N.I. Dib ,
L.P.B. Kathei ,
G.E. Ponchak ,
R.N. Simons
.
Theoretical and experimental characterization of coplanar waveguide discontinuities for filter applications.
IEEE Trans. Microw. Theory Tech.
,
5 ,
873 -
882
-
9)
-
1. Dai, G.L., Xia, M.-Y.: ‘Novel miniaturized bandpass filters using spiral-shaped resonators and window feed structures’. Progress in Electromagnetics Research, PIER 100, 1997, pp. 235–243.
-
10)
-
7. Sharma, A.K., Wang, H.: ‘Experimental models of series and shunt elements in coplanar MMIC's’. IEEE Int. Microwave Symp. Digest, Albuquerque, NM, 1–5 June 1992, pp. 1349–1352.
-
11)
-
8. Masood, R., Mohsin, S.A.: ‘Optimization of the S-parameter response of a coplanar waveguide series short stub for broadband applications’. IEEE, 2010, pp. 384–388.
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