Title :
High resolution IFMs
Author :
Coupez, J.P. ; Gruchala, H. ; Slowik, A. ; Recko, Czeslaw ; Rutkowski, A.
Author_Institution :
Ecole Nat. Superieure des Telecommun. de Bretagne, Brest, France
Abstract :
In this paper, three type of IFM (instantaneous frequency measurement) systems are presented. Classical IFM, consisting of directional couplers and power dividers, has been modified by applying phase shifters. Two other IFMs are also described. A diode ring was used in one IFM and only power dividers in another. Output signal conversion techniques are detailed. These IFMs, which can reach a frequency resolution better than 1 MHz, were examined practically.
Keywords :
directional couplers; frequency measurement; microwave measurement; microwave phase shifters; power dividers; semiconductor diodes; diode rings; directional couplers; high resolution instantaneous frequency measurement systems; measurement frequency resolution; microwave circuits; output signal conversion techniques; phase shifters; power dividers; Circuits; Couplers; Delay lines; Detectors; Diodes; Frequency measurement; Phase detection; Phase shifters; Power dividers; Signal resolution;
Conference_Titel :
Microwaves, Radar and Wireless Communications, 2002. MIKON-2002. 14th International Conference on
Print_ISBN :
83-906662-5-1
DOI :
10.1109/MIKON.2002.1017893
