发明名称 |
APPARATUS FOR CONTROLLING FREQUENCY CHARACTERISTIC OF RECEIVING LOW-NOISE AMPLIFIER |
摘要 |
PURPOSE: An apparatus for controlling a frequency characteristic of a receiving low-noise amplifier is provided to perform a gain evenness of a receiving frequency band and improve a characteristic of a CDMA intermodulation by adjusting a gain of a wireless frequency low-noise amplifier. CONSTITUTION: A duplexer(100) receives a wireless frequency signal received through an antenna(100) and transmits the received wireless frequency signal to the outside. A low-noise amplifier(200) receives the wireless frequency signal transmitted from the duplexer(100) to removes a noise and amplifies the wireless frequency signal as a predetermined amplifying level. A filter unit(400) receives the signal amplified in the low-noise amplifier(200) and filters the received signal as a desired band signal. A mixer(500) receives a signal transmitted through the filter unit(400) and converts the wireless frequency into an intermediate frequency. A current control unit(300) adjusts a providing amount of a driving current provided to the low-noise amplifier(200) to adjust a frequency characteristic for performing an evenness of the frequency characteristic of a gain amplified in the low-noise amplifier(200).
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申请公布号 |
KR20000061855(A) |
申请公布日期 |
2000.10.25 |
申请号 |
KR19990011235 |
申请日期 |
1999.03.31 |
申请人 |
HYUNDAI ELECTRONICS IND. CO.,LTD |
发明人 |
JUNG, SEONG HO |
分类号 |
H04B1/40;(IPC1-7):H04B1/40 |
主分类号 |
H04B1/40 |
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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