Design and Development of Amplitude and phase measurement of RF signal with Digital I-Q Demodulator

Autor:	Hriday Patel, Sriprakash Verma, Kumar Rajnish, Rajesh Trivedi, Aparajita Mukherjee, Dipal Soni
Rok vydání:	2017
Předmět:	Physics History Intermediate frequency Amplifier RF power amplifier Electronic engineering Demodulation Power dividers and directional couplers Digital signal Radio frequency Signal Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 823:012058
ISSN:	1742-6596 1742-6588
Popis:	ITER-India, working as a nodal agency from India for ITER project [1], is responsible to deliver one of the packages, called Ion Cyclotron Heating & Current Drive (ICH&CD) - Radio Frequency Power Sources (RFPS). RFPS is having two cascaded amplifier chains (10 kW, 130 kW & 1.5 MW) combined to get 2.5 MW RF power output. Directional couplers are inserted at the output of each stage to extract forward power and reflected power as samples for measurement of amplitude and phase. Using passive mixer, forward power and reflected power are down converted to 1MHz Intermediate frequency (IF). This IF signal is used as an input to the Digital IQ Demodulator (DIQDM). DIQDM is realized using National Instruments make PXI hardware & LabVIEW software tool. In this paper, Amplitude and Phase measurement of RF signal with DIQDM technique is described. Also test results with dummy signals and signal generated from low power RF systems is discussed here.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aa9862e69c1a842b12db56444eb33cbd https://doi.org/10.1088/1742-6596/823/1/012058 Zobrazit plný text záznamu