Orthogonal FM demodulation circuit with CA3098

Published:2011/7/17 22:26:00 Author:zj | Keyword: Orthogonal, FM demodulation circuit | From:SeekIC

As shown in the figure thecircuit is 10.7MHz LC FM orthogonal demodulation circuit. Integrated circuit CA3089E in the diagram contains positive frequency amplifying circuit. If access ceramic filter ( lumped parameter filter)in the first level, it consists entirely FMdischarge circuit. Limiterworks whenthe input is greater than 12μV. AM differential ratio is 55dB. The output endRC is a de-emphasis circuit.



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