• Title/Summary/Keyword: 회선

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A Design of the Voltage-Controlled Oscillator for Wireless Subscriber Network (무선가입자회선망용 전압제어발진기 설계)

  • Hur, Chang-Wu;Choi, Jun-Su
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.11 no.12
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    • pp.2205-2209
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    • 2007

  • In this paper, a voltage controlled oscillator(VCO) of core components for wireless subscriber network is designed. The type of oscillator is colpits method and the oscillator device uses a LC resonator. The product is made on FR-4 substrate with dielectric constant of 4.6. The designed VCO is operated at 3.2V, 10mA and has output value of 0.67dB. The VCO's phase noise property is -102DBc/Hz at offset frequence of 100kHz. The fabricated VCO is the same as target value and can be used for wireless subscriber network.

  • https://doi.org/10.6109/jkiice.2007.11.12.2205 인용 PDF KSCI

A Study on Algorithm of the Integrated Communication System in Radio Station (무선국의 통합 시스템에 대한 알고리즘의 연구)

  • 조학현;최조천;김기문
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.2 no.4
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    • pp.545-551
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    • 1998

  • The Radio communication by existing SSB, VHF, etc. in a coast station and a base station for military affairs is still used to a very important the device of information delivery or transmitting and receiving by the remote controller to using to the exclusive cable for a equipment established at a long distance. When a number of consumer to connected and operated by a number of transceiver is essential for a circuit controller of ICS, in KOREA, is devoted by import to considerable quantity because of to be delayed development of this field. This Paper has been realized to optimal algorithm and designing of a circuit connection controller by multi-processor to pre-stage for the development of ICS. The H/W is composed able to remote control to circuit connector with the several slave processor and a processor for master, and this has taken possible through without any obstacle to communication circuits of a control signal by FSK system. The S/W make possible monitoring for communication condition of other circuits by means of a serial communication system by the multi-processing. This paper has been studied for connecting to a circuits wished to rapidly and precisely by the full application to a interrupt technique. A technique to control by remote to a number of transceiver is a way increasing to application for a frequency resource of the limited MF/SF, VHF and the existing radio communication technique. According to, this paper will achieve to be the reduction of energy & equipment and multiplicity of information delivery in the general communication and disposal to rapid and exact for the important communication as distress, urgency and safety on the sea.

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