发明名称 |
VARIABLE GAIN LOW-NOISE AMPLIFIER FOR A WIRELESS TERMINAL |
摘要 |
A variable gain, low noise amplifier is described, which is suitable as the input amplifier for a wireless terminal, or as the pre-amplifier stage of a wireless terminal transmitter. The amplifier (MN1) may achieve variable gain by deploying a network of transistors (MP1-MPn) in a parallel array, each independently selectable by a PMOS switch (220), and providing the variable resistance for the resonant circuit (Rp, Lp). Power dissipation can also be mitigated by using a network of driving transistors, each independently selectable by a PMOS switch (220). The resonant frequency of the amplifier may be made tunable by providing a selection of optional pull-up capacitors (Cp'1- Cp'n).
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申请公布号 |
CA2442332(A1) |
申请公布日期 |
2002.10.10 |
申请号 |
CA20022442332 |
申请日期 |
2002.03.28 |
申请人 |
GCT SEMICONDUCTOR, INC. |
发明人 |
JEONG, HOE-SAM;LEE, WON-SEOK;LEE, SEUNG-WOOK;PARK, JOONBAE;LEE, KYEONGHO |
分类号 |
H03F3/16;H03G1/00;H03G3/10;H03G3/18;(IPC1-7):H03G3/10 |
主分类号 |
H03F3/16 |
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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