公开(公告)号：US06665528B2

公开(公告)日：2003-12-16

申请号：US09876258

申请日：2001-06-06

申请人： Brian J. McNamara ,  Heinz Banzer ,  Ludger Verweyen

发明人： Brian J. McNamara ,  Heinz Banzer ,  Ludger Verweyen

IPC分类号： H04B126

CPC分类号： H03D7/125

摘要： A dual band mixer has a common node for at least one radio frequency input and an intermediate frequency output. The dual band mixer also has a first transistor with a gate coupled to a first local oscillator input and a drain coupled to the common node, and a second transistor with a gate coupled to a second local oscillator input and a drain coupled to the common node. Interconnection circuitry turns off the second transistor when the first local oscillator input signal is applied to the first transistor, and turns off the first transistor when the second local oscillator input signal is applied to the second transistor.

公开(公告)号：US06369641B1

公开(公告)日：2002-04-09

申请号：US09668439

申请日：2000-09-22

申请人： Brian J. McNamara ,  Heinz Banzer ,  Ludger Verweyen

发明人： Brian J. McNamara ,  Heinz Banzer ,  Ludger Verweyen

IPC分类号： H01J1982

CPC分类号： H03K17/145 ,  G05F3/205 ,  H03K17/302 ,  H03K17/687 ,  H03K17/693

摘要： In one aspect, a bias circuit includes a rectifier, a negative bias level setter, and a negative bias extractor. The rectifier has a rectifier input and a rectifier output. The rectifier is configured to produce at the rectifier output a negative rectified voltage signal from an alternating input signal applied at the rectifier input. The negative bias level setter couples to the rectifier output and provides a path for current establishing the negative rectified voltage signal produced at the rectifier output. The negative bias extractor has an extractor output and an extractor input coupled to the rectifier output. The negative bias extractor is configured to produce at the extractor output a substantially constant negative bias signal from the negative rectified voltage signal produced at the rectifier output. In another aspect, a bias circuit includes a biasing output coupled between a positive voltage source and a negative voltage source, and a switching circuit coupled between the positive voltage source and the biasing output. The switching circuit is configured to define two or more different current paths through the switching circuit and thereby produce two or more respective biasing states at the biasing output.

摘要翻译： 一方面，偏置电路包括整流器，负偏置电平设定器和负偏压提取器。 整流器具有整流器输入和整流器输出。 整流器被配置为在整流器输出端产生来自在整流器输入端施加的交流输入信号的负整流电压信号。 负偏置电平设置器耦合到整流器输出，并提供用于建立在整流器输出处产生的负整流电压信号的电流的路径。 负偏压提取器具有抽出器输出和耦合到整流器输出的提取器输入。 负偏压提取器被配置为在提取器处产生来自在整流器输出端产生的负整流电压信号的基本恒定的负偏置信号。 在另一方面，偏置电路包括耦合在正电压源和负电压源之间的偏置输出以及耦合在正电压源和偏置输出之间的开关电路。 开关电路被配置为限定通过开关电路的两个或更多个不同的电流路径，从而在偏置输出处产生两个或更多个相应的偏置状态。

公开(公告)号：US5837589A

公开(公告)日：1998-11-17

申请号：US774237

申请日：1996-12-27

申请人： Brian J. McNamara ,  John P. Wendler ,  Kamal Tabatabaie-Alavi

发明人： Brian J. McNamara ,  John P. Wendler ,  Kamal Tabatabaie-Alavi

IPC分类号： H01L27/06 ,  H03D7/02 ,  H01L21/331

CPC分类号： H03D7/02 ,  H01L27/0605

摘要： Mixer circuitry having a semiconductor body formed therein mixer circuitry having an oscillator having a heterojunction bipolar transistor and a mixer having a Schottky diode. The heterojunction transistor has a collector region formed in one portion of doped layer of the semiconductor body and the diode has a metal electrode is Schottky contact with another portion of such doped layer. The mixer is includes a diode and a DC biasing circuit, comprising a constant current, for biasing such diode to predetermined operating point substantially invariant with power of an input signal fed to such mixer.

摘要翻译： 具有形成在其中的混合器电路的混合器电路具有具有异质结双极晶体管的振荡器和具有肖特基二极管的混频器。 异质结晶体管具有形成在半导体本体的掺杂层的一部分中的集电极区域，并且二极管具有金属电极与该掺杂层的另一部分肖特基接触。 混频器包括二极管和直流偏置电路，其包括恒定电流，用于将馈电到这种混频器的输入信号的功率基本上不变地偏置到预定工作点。

公开(公告)号：US6072352A

公开(公告)日：2000-06-06

申请号：US138581

申请日：1998-08-21

申请人： Brian J. McNamara ,  John P. Wendler ,  Kamal Tabatabaje-Alavi

发明人： Brian J. McNamara ,  John P. Wendler ,  Kamal Tabatabaje-Alavi

IPC分类号： H01L27/06 ,  H03D7/02 ,  G06G7/12

CPC分类号： H03D7/02 ,  H01L27/0605

摘要： Mixer circuitry having a semiconductor body formed therein mixer circuitry having an oscillator having a heterojunction bipolar transistor and a mixer having a Schottky diode. The heterojunction transistor has a collector region formed in one portion of doped layer of the semiconductor body and the diode has a metal electrode is Schottky contact with another portion of such doped layer. The mixer is includes a diode and a DC biasing circuit, comprising a constant current, for biasing such diode to predetermined operating point substantially invariant with power of an input signal fed to such mixer.

摘要翻译： 具有形成在其中的混合器电路的混合器电路具有具有异质结双极晶体管的振荡器和具有肖特基二极管的混频器。 异质结晶体管具有形成在半导体本体的掺杂层的一部分中的集电极区域，并且二极管具有金属电极与该掺杂层的另一部分肖特基接触。 混频器包括二极管和直流偏置电路，其包括恒定电流，用于将馈电到这种混频器的输入信号的功率基本上不变地偏置到预定工作点。

公开(公告)号：US6046486A

公开(公告)日：2000-04-04

申请号：US138582

申请日：1998-08-21

申请人： Brian J. McNamara ,  John P. Wendler ,  Kamal Tabatabaje-Alavi

发明人： Brian J. McNamara ,  John P. Wendler ,  Kamal Tabatabaje-Alavi

IPC分类号： H01L27/06 ,  H03D7/02 ,  H01L27/02

CPC分类号： H03D7/02 ,  H01L27/0605

摘要： Mixer circuitry having a semiconductor body formed therein mixer circuitry having an oscillator having a heterojunction bipolar transistor and a mixer having a Schottky diode. The heterojunction transistor has a collector region formed in one portion of doped layer of the semiconductor body and the diode has a metal electrode is Schottky contact with another portion of such doped layer. The mixer is includes a diode and a DC biasing circuit, comprising a constant current, for biasing such diode to predetermined operating point substantially invariant with power of an input signal fed to such mixer.

摘要翻译： 具有形成在其中的混合器电路的混合器电路具有具有异质结双极晶体管的振荡器和具有肖特基二极管的混频器。 异质结晶体管具有形成在半导体本体的掺杂层的一部分中的集电极区域，并且二极管具有金属电极与该掺杂层的另一部分肖特基接触。 混频器包括二极管和直流偏置电路，其包括恒定电流，用于将馈电到这种混频器的输入信号的功率基本上不变地偏置到预定工作点。