A Compact Band-Pass Filter with High Selectivity and Second Harmonic Suppression |
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| Authors: | Ramona Cosmina Hadarig Maria Elena de Cos Gomez Fernando Las-Heras |
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| Institution: | Signal Theory and Communications Area, Department of Electrical Engineering, University of Oviedo, Multi-Purpose Building, Module 8, Gijón 33203 (Asturias), Spain; E-Mails: (M.E.C.G.); (F.L.-H.) |
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| Abstract: | The design of a novel band-pass filter with narrow-band features based on an electromagnetic resonator at 6.4 GHz is presented. A prototype is manufactured and characterized in terms of transmission and reflection coefficient. The selective passband and suppression of the second harmonic make the filter suitable to be used in a C band frequency range for radar systems and satellite/terrestrial applications. To avoid substantial interference for this kind of applications, passive components with narrow band features and small dimensions are required. Between 3.6 GHz and 4.2 GHz the band-pass filter with harmonic suppression should have an attenuation of at least 35 dB, whereas for a passband, less than 10% is sufficient. |
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| Keywords: | band-pass filter artificial magnetic conductor dispersion diagram second harmonic suppression transmission coefficient |
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