Angle Modulation Indices Measurement in the Presence of Amplitude Modulation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F08%3A03147164" target="_blank" >RIV/68407700:21230/08:03147164 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Angle Modulation Indices Measurement in the Presence of Amplitude Modulation

Original language description

This paper presents an automated measurement of the phase/frequency indices of angle modulation in the frequency domain on condition that a signal source is simultaneously angle and amplitude modulated by the same phase shifted harmonic signals. In the first part of this paper, we propose mathematical model of such modulated signals. Then we investigate the spectrum of signal and discuss some basic properties of such modulated signals, where we restrict ourselves only to a weak amplitude modulation withmodulation depth smaller than 100 %. The final section is devoted to the signal parameters derivation techniques based on the power spectrum measurement and non-linear least squares iteration method. The effect of power spectrum measurement errors is also pointed out and a comparison between Bessel null method and proposed technique is presented.

Czech name

Měření indexu úhlové modulace za přítomnosti amplitudové modulace

Czech description

This paper presents an automated measurement of the phase/frequency indices of angle modulation in the frequency domain on condition that a signal source is simultaneously angle and amplitude modulated by the same phase shifted harmonic signals. In the first part of this paper, we propose mathematical model of such modulated signals. Then we investigate the spectrum of signal and discuss some basic properties of such modulated signals, where we restrict ourselves only to a weak amplitude modulation withmodulation depth smaller than 100 %. The final section is devoted to the signal parameters derivation techniques based on the power spectrum measurement and non-linear least squares iteration method. The effect of power spectrum measurement errors is also pointed out and a comparison between Bessel null method and proposed technique is presented.

Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2008

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 18 th International Conference Radioelektronika 2008

ISBN

978-1-4244-2087-2

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

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Publisher name

Československá sekce IEEE

Place of publication

Praha

Event location

Praha

Event date

Apr 23, 2008

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

000257567200040