(A) study on the threshold extention capability of the phase locked loop FM demodulator over the conventional discriminator

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This paper presents a simplified approach to the problem of the threshold extention capability of phase locked loop FM demodulator over the conventional FM discriminator. For the unmodulated carrier signal each FM demodulator is analyzed to get the description of the output SNR in terms of the input CNR(or SNR) and the system parameters, namely, modulation index β, the loop natural frequency $ω_n$ and the test tone frequency $ω_m$. Experimental results are then compared with the theoretical results. It is found that the PLL FM demodulator has a lower threshold point than the conventional discriminator by about 20dB for modulation index β = 75.
Advisors
Kim, Jae-Kyoon김재균
Description
한국과학기술원 : 전기 및 전자공학과,
Publisher
한국과학기술원
Issue Date
1976
Identifier
62004/325007 / 000731079
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기 및 전자공학과, 1976.2, [ iv, 58 p. ]

URI
http://hdl.handle.net/10203/39421
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=62004&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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