Local oscillator leak cancellation circuit

专利名称：Local oscillator leak cancellation circuit发明人：George Kenneth Kannell,Robert Evan

Myer,Krishnamurthy Sreenath

申请号：US09/115656申请日：19980715公开号：US06167247A公开日：20001226

摘要：A method for reducing the level of an undesired signal, generated through afrequency converter device, by implementing a local oscillator (hereinafter \"LO\") leakcancellation circuit. A feedback correction loop, for a radio frequency (RF) transmitter orreceiver, reduces an undesired local oscillator leak generated through a single inputfrequency converter device, such as a mixer, by a unique detection circuit. A unique nullingcircuit is also implemented for a multiple input frequency converter device, such as aquadrature modulator.

申请人：LUCENT TECHNOLOGIES, INC.

代理机构：Mayer, Fortkort & Williams

代理人：Karin L. Williams

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