发明名称 |
MOBILE COMMUNICATION SYSTEM FOR EFFICIENTLY COVERING SHADOWY AREA OF BASE STATION AND EASILY ABLE TO EXPAND AREA GIVEN SERVICE |
摘要 |
PURPOSE: A mobile communication system is provided to efficiently cover the shadowy area inside and outside a base station and to easily expand the area given service of the base station. CONSTITUTION: The remote sending and receiving device(30) installed within the service area of the base station(10) comprises the steps of: inputting a RF signal into a low noise amplifier, received through the receiving unit(34) of an antenna(32) and a duplexer(34) from the base station(10); amplifying the received RF signal, suppressing the amplifying degree of the noise included in the received RF signal; obtaining the difference between the output of the low noise amplifier and a standard frequency at a frequency downward transformer(42) and removing the unwanted wave included in the output of the frequency downward transformer at a band passing filter(44).
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申请公布号 |
KR20000008295(A) |
申请公布日期 |
2000.02.07 |
申请号 |
KR19980028038 |
申请日期 |
1998.07.11 |
申请人 |
YOUNGWOO T&G CORP.;PARK, SI WOO;LEE, DONG HO;PARK, BYUNG KI |
发明人 |
PARK, SI WOO;LEE, DONG HO;PARK, BYUNG KI |
分类号 |
H04W16/26;H04B7/15;H04B7/216;H04B7/26;H04B10/00;H04B10/112;H04B10/548;(IPC1-7):H04B7/216;H04J13/00 |
主分类号 |
H04W16/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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