发明名称 |
Transconductance amplifier, filter using the transconductance amplifier and tuning circuitry for transconductance amplifier in the filter |
摘要 |
An input stage for adjusting the gain or conductance Gm depending upon a control voltage applied and an output stage for securing a sufficiently high output impedance and a sufficiently wide output dynamic range are connected between the voltage source and the ground in parallel with each other.
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申请公布号 |
US6549074(B2) |
申请公布日期 |
2003.04.15 |
申请号 |
US20010998645 |
申请日期 |
2001.12.03 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
UGAJIN MAMORU;TSUKAHARA TSUNEO |
分类号 |
H03F3/45;(IPC1-7):H03F3/45 |
主分类号 |
H03F3/45 |
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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