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1. 发明授权

US08559905B2 Systems, devices, and methods for suppressing frequency spurs in mixers 有权
标题翻译：用于抑制混频器频率杂散的系统，设备和方法
公开(公告)号：US08559905B2
公开(公告)日：2013-10-15
申请号：US11950831
申请日：2007-12-05
申请人： Kenneth V. Buer , Gaurav Menon , Ramanamurthy V. Darapu , Dean Muellenberg
发明人： Kenneth V. Buer , Gaurav Menon , Ramanamurthy V. Darapu , Dean Muellenberg
IPC分类号： H04B1/10 , H04K3/00
CPC分类号： H03D7/02
摘要： Systems, devices and methods are disclosed for suppressing the 2LO frequency spur, output from a mixer. In various exemplary embodiments, a DC bias circuit is electrically connected to provide DC bias to one or more non-linear elements of the mixer. The biasing voltage is used to cause the current-voltage characteristics and/or junction capacitances between non-linear elements to be more symmetric and/or to suppress 2LO leakage currents that form 2LO frequency spurs at the output of the mixer. The non-linear elements may comprise one of: BJT's, diodes, and FET's. The mixer may be one of: a subharmonic mixer; a fundamental resistive mixer; a fundamental subharmonic transconductance mixer; and a fundamental transconductance mixer comprising an anti-parallel diode pair. The system may further be configured to automatically determine an appropriate DC bias voltage level that will improve one of the LO-IF isolation and the LO-RF isolation.
摘要翻译：公开了用于抑制从混频器输出的2LO频率支线的系统，装置和方法。在各种示例性实施例中，DC偏置电路电连接以向混频器的一个或多个非线性元件提供DC偏置。偏置电压用于使非线性元件之间的电流 - 电压特性和/或结电容更为对称和/或抑制在混频器输出端形成2LO频率杂散的2LO漏电流。非线性元件可以包括以下之一：BJT，二极管和FET。混合器可以是以下之一：次谐波混合器; 基本电阻混频器; 一种基本的次谐波跨导混频器; 以及包括反并联二极管对的基本跨导混频器。该系统还可以被配置为自动确定将改善LO-IF隔离和LO-RF隔离之一的适当DC偏置电压电平。

2. 发明申请

US20090149150A1 SYSTEMS, DEVICES, AND METHODS FOR SUPPRESSING FREQUENCY SPURS IN MIXERS 有权
标题翻译：用于抑制混合器中频率冲击的系统，装置和方法
公开(公告)号：US20090149150A1
公开(公告)日：2009-06-11
申请号：US11950831
申请日：2007-12-05
申请人： Kenneth V. Buer , Gaurav Menon , Ramanamurthy V. Darapu , Dean Muellenberg
发明人： Kenneth V. Buer , Gaurav Menon , Ramanamurthy V. Darapu , Dean Muellenberg
IPC分类号： H04B1/26
CPC分类号： H03D7/02
摘要： Systems, devices and methods are disclosed for suppressing the 2LO frequency spur, output from a mixer. In various exemplary embodiments, a DC bias circuit is electrically connected to provide DC bias to one or more non-linear elements of the mixer. The biasing voltage is used to cause the current-voltage characteristics and/or junction capacitances between non-linear elements to be more symmetric and/or to suppress 2LO leakage currents that form 2LO frequency spurs at the output of the mixer. The non-linear elements may comprise one of: BJT's, diodes, and FET's. The mixer may be one of: a subharmonic mixer; a fundamental resistive mixer; a fundamental subharmonic transconductance mixer; and a fundamental transconductance mixer comprising an anti-parallel diode pair. The system may further be configured to automatically determine an appropriate DC bias voltage level that will improve one of the LO-IF isolation and the LO-RF isolation.
摘要翻译：公开了用于抑制从混频器输出的2LO频率支线的系统，装置和方法。在各种示例性实施例中，DC偏置电路电连接以向混频器的一个或多个非线性元件提供DC偏置。偏置电压用于使非线性元件之间的电流 - 电压特性和/或结电容更为对称和/或抑制在混频器输出端形成2LO频率杂散的2LO漏电流。非线性元件可以包括以下之一：BJT，二极管和FET。混合器可以是以下之一：次谐波混合器; 基本电阻混频器; 一种基本的次谐波跨导混频器; 以及包括反并联二极管对的基本跨导混频器。该系统还可以被配置为自动确定将改善LO-IF隔离和LO-RF隔离之一的适当DC偏置电压电平。

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