Title :
A Novel LSB Discriminator for a 5 bit IFM Subsystem Based on Microstrip Band-Stop Filter
Author :
De Souza, M. F A ; Silva, F. R L e ; de Melo, M.T.
Author_Institution :
Dept. de Eletrenica e Sist., Univ. Fed. de Pernambuco, Recife
Abstract :
The authors have studied a new way to design IFM (Instantaneous Frequency Measurement) subsystem. The method is based on band-stop filters. The IFM uses rectangular open loop resonators instead of delay lines. The resonance frequency is adjusted by resonator perimeter, that must be half guided wavelength, and also by coupling distance between the resonators and the main transmission line. A LSB (least significant bit) discriminator of an IFM subsystem with resolution of 62.5 MHz is designed. The device has been fabricated on RT6010.2 substrate of thickness h=1.27 mm. A full wave EM simulator is used to obtain the frequency response.
Keywords :
band-stop filters; discriminators; microstrip filters; open loop systems; resonator filters; IFM subsystem; RT6010.2 substrate; frequency 62.5 MHz; instantaneous frequency measurement; least significant bit discriminator; main transmission line; microstrip band-stop filter; rectangular open loop resonators; size 1.27 mm; storage capacity 5 bit; Band pass filters; Binary codes; Delay effects; Delay lines; Frequency measurement; Frequency response; Microstrip filters; Microwave filters; Resonator filters; Signal resolution;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751380
