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Journal from gdlhub / 2020-01-09 09:58:52
Oleh : Jarjar Mariem, El Ouazzani Nabih, Telkomnika
Dibuat : 2020-01-09, dengan 1 file

Keyword : active inductor, chebyshev filter, CMOS circuit, elliptic response, microwave active channelized filter, OTA
Url : http://journal.uad.ac.id/index.php/TELKOMNIKA/issue/view/640
Sumber pengambilan dokumen : web

A two-branch microwave active bandpass filter is designed through the channelized filtering

technique as well as the transversal concept. Both the main and the auxiliary branches, connected without

power dividers/combiners, rely on C-coupled active third order Chebyshev bandpass filters. A lumped

element signal delay circuit is also introduced in the main channel. Active inductors based on the gyrator-C

topology, are involved in the Chebyshev filters’ structure. CMOS-based Operational Transconductor

Amplifier (OTA) circuits are the building blocks of these inductors. The proposed active transversal

channelized filter produces an elliptic narrow band response, centered at 1.13 GHz. Simulation results,

obtained by means of the PSPICE code according to the 0.18 µm TSMC MOS technology, indicate

excellent performances illustrating good impedance matching, low insertion losses and high selectivity.

Finally, the noise analysis shows that the filter has a low noise figure in the bandwidth.

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