Design of Stereo Frequency Modulation Exciter Controlled by Microcontroller

Jian Bin Zhang; Ming Fang Zhu; Yan Ling Ren; Jian Lu

doi:10.4028/www.scientific.net/AMM.29-32.796

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 29-32Design of Stereo Frequency Modulation Exciter...

Design of Stereo Frequency Modulation Exciter Controlled by Microcontroller

Abstract:

A new stereo Frequency Modulation exciter scheme for short-distance wireless communication is proposed. It adopts a stereo FM IC BH1415 to transmit audio FM signals, and its transmitting frequency is controlled by microcontroller. The basic principle of phase-locked loop for FM is analyzed, and the audio FM circuit based on BH1415 and the controlling method based on AT89C51 are introduced. Test results indicated that, the audio FM Exciter had simple structure and higher reliability, each parameter can meet the demands of FM broadcasting system, and it has some scalability.

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Periodical:

Applied Mechanics and Materials (Volumes 29-32)

Pages:

796-801

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.29-32.796

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Online since:

August 2010

Authors:

Jian Bin Zhang, Ming Fang Zhu, Yan Ling Ren, Jian Lu

Keywords:

AT89C51, BH1415, Frequency Modulation Exciter, Phase-Locked Loop, Stereo

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References

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[2] Zhang Juesheng, Zheng Jiyu, Wan Xinping, Phase-locked loop technology, Xidian University Press, China 2003, pp.134-139.

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[3] BH1415 datasheet on http: /www. rohm. com.

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[4] Zhang Youde, Zhao Zhiying, Microcontroller principle and application, Fudan University Press, China 2000 pp.141-169.

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[5] The State Administration of Radio Film and Television, GY/T154-2000 Technical specificaton for FM soundsync-broadcasting system, The State Adminis-tration of Radio Film and Television, China (2000).

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