Title :
Discriminators for Instantaneous Frequency Measurement Subsystem Based on Open-Loop Resonators
Author :
De Souza, Marcio F A ; Silva, Fabio R L e ; De Melo, Marcos T. ; Novo, Lauro R G S L
Author_Institution :
Dept. de Eletron. e Sist., Univ. Fed. de Pernambuco (UFPE), Recife, Brazil
Abstract :
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.
Keywords :
band-stop filters; delay lines; frequency measurement; measurement systems; microstrip filters; microwave measurement; resonator filters; transmission lines; bandstop filter; delay lines; instantaneous frequency measurement subsystem; microstrip filter; rectangular open-loop resonator; resonance frequency; resonator filter; transmission line; Bandstop filters; microstrip filters; radio spectrum management; resonator filters;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2009.2027179
