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Discriminators for Instantaneous Frequency Measurement Subsystem Based on Open-Loop Resonators

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4 Author(s)
de Souza, M. ; Dept. de Eletron. e Sist., Univ. Fed. de Pernambuco (UFPE), Recife, Brazil ; Silva, F. ; de Melo, M.T. ; Novo, L.R.G.S.L.

The authors have studied a new way to design an instantaneous frequency measurement subsystem (IFMS). The method is based on bandstop filters. The device uses rectangular open-loop resonators instead of delay lines. The resonance frequency is adjusted by a resonator perimeter that must be approximately a half-wavelength long, and also by coupling distance between the resonators and the main transmission line. Simulated and experimental results are presented for a 5-bit IFMS.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:57 ,  Issue: 9 )