发明名称 |
Wideband precision current sensor |
摘要 |
A wideband precision current sensor employs DC-coupled and AC-coupled sensing circuits to generate lower and higher frequency sense signals; which are combined to form a wideband output signal that is proportional to a wideband current of interest. The frequency response of the wideband output signal is substantially flat across a wideband frequency range, 0 to 30 MHz for example, based on matching the frequency response of the DC- and AC-coupled sensing circuits. In an exemplary application, the current sensor provides feedback to a supply voltage (Vdd) amplifier used in RF envelope elimination and restoration (EER) applications.
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申请公布号 |
US6661217(B2) |
申请公布日期 |
2003.12.09 |
申请号 |
US20010036650 |
申请日期 |
2001.12.21 |
申请人 |
TELEFONAKTIEBOLAGET L.M. ERICSSON |
发明人 |
KIMBALL DONALD FELT;ARCHAMBAULT JOSEPH L.;HALEY WALTER;MATHE LENNART |
分类号 |
G01R19/00;(IPC1-7):G01R31/00;G01R27/14 |
主分类号 |
G01R19/00 |
代理机构 |
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