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。

公开(公告)号：US5173671A

公开(公告)日：1992-12-22

申请号：US629318

申请日：1990-12-18

申请人： John P. Wendler ,  Alan Palevsky

发明人： John P. Wendler ,  Alan Palevsky

IPC分类号： H01F17/00 ,  H01F27/34 ,  H01F27/36 ,  H01L27/08 ,  H03H1/00 ,  H03H7/00 ,  H03H7/01

CPC分类号： H03H7/0123 ,  H01F17/0006 ,  H01L27/08 ,  H03H1/00 ,  H01F27/34 ,  H01F27/362

摘要： An RF circuit which may be for example a high pass filter, low pass filter, phase shifter, bandpass filter, termination network, bias network, or series or parallel resonance circuit includes at least one strip conductor coiled about a region and an outer or ring strip conductor disposed about a periphery of the at least one coiled strip conductor and coupled to said at least one coiled strip conductor through a dielectric. Parasitic capacitance between the coiled conductor and outer or ring conductor provide capacitor elements for the circuit.

摘要翻译： 可以是例如高通滤波器，低通滤波器，移相器，带通滤波器，终端网络，偏置网络或串联或并联谐振电路的RF电路包括围绕区域和外部或环形线圈化的至少一个条状导体 所述带状导体围绕所述至少一个线圈状带状导体的周边布置，并且通过电介质耦合到所述至少一个卷绕带状导体。 线圈导体与外圈或环形导体之间的寄生电容为电路提供电容元件。

公开(公告)号：US08600325B2

公开(公告)日：2013-12-03

申请号：US12757353

申请日：2010-04-09

申请人： Robert Jastram ,  John P. Wendler

发明人： Robert Jastram ,  John P. Wendler

IPC分类号： H04B17/00

CPC分类号： H04B1/1027 ,  H04B17/23

摘要： Embodiments of the present invention provide a system, apparatus and method for an audible indicator of a quality of a received digital radio transmission. After receiving a digital radio transmission in a digital radio receiver, the quality of the received digital radio transmission is detected. Then an audible communication from the received digital radio transmission is decoded. Then an audible indicator is superimposed onto the audible communication, to form a composite audible signal. Finally, an amplitude of the audible indicator is dynamically adjusted relative to an amplitude of the audible communication, responsive to a quality of the received digital radio transmission.

摘要翻译： 本发明的实施例提供了一种用于可接收数字无线电传输质量的可听指示符的系统，装置和方法。 在数字无线电接收机中接收数字无线电传输之后，检测到所接收的数字无线电传输的质量。 然后解码来自接收的数字无线电传输的可听通信。 然后将可听见的指示符叠加在可听见的通信上，形成复合的声音信号。 最后，响应于所接收的数字无线电传输的质量，相对于可听通信的幅度来动态地调整可听指示器的幅度。

公开(公告)号：US20110250851A1

公开(公告)日：2011-10-13

申请号：US12757353

申请日：2010-04-09

申请人： John P. Wendler ,  Robert Jastram

发明人： John P. Wendler ,  Robert Jastram

IPC分类号： H04B17/00

CPC分类号： H04B1/1027 ,  H04B17/23

摘要： Embodiments of the present invention provide a system, apparatus and method for an audible indicator of a quality of a received digital radio transmission. After receiving a digital radio transmission in a digital radio receiver, the quality of the received digital radio transmission is detected. Then an audible communication from the received digital radio transmission is decoded. Then an audible indicator is superimposed onto the audible communication, to form a composite audible signal. Finally, an amplitude of the audible indicator is dynamically adjusted relative to an amplitude of the audible communication, responsive to a quality of the received digital radio transmission.

摘要翻译： 本发明的实施例提供了一种用于可接收数字无线电传输质量的可听指示符的系统，装置和方法。 在数字无线电接收机中接收数字无线电传输之后，检测到所接收的数字无线电传输的质量。 然后解码来自接收的数字无线电传输的可听通信。 然后将可听见的指示符叠加在可听见的通信上，形成复合的声音信号。 最后，响应于所接收的数字无线电传输的质量，相对于可听通信的幅度来动态地调整可听指示器的幅度。

公开(公告)号：US4961062A

公开(公告)日：1990-10-02

申请号：US364414

申请日：1989-06-12

申请人： John P. Wendler

发明人： John P. Wendler

IPC分类号： H01Q3/36 ,  H03H7/20

CPC分类号： H03H7/20

摘要： An analog phase shifter is provided by cascading T high pass filter and .pi. low pass filter sections. The low pass filter network is selected to have a cut-off frequency above the highest frequency in a predetermined frequency range of the phase shifter and includes a fixed inductor element as a series element of the network and a pair of variable capacitor elements disposed in shunt between said inductor element and ground. The high pass filter network has a cut-off frequency below the lowest frequency of the predetermined frequency band. The network includes a fixed inductor element disposed as a shunt element of said network and a pair of variable capacitor elements disposed in series. The inductor element is coupled between a common connection of said pair of variable capacitor elements and the reference potential. The .pi. network and the T network are cascaded connected between the pair of terminals of the network. The voltage level is fed to each one of the variable capacitor elements and provides a variable capacitance in response thereto and thus imparts to said network a variable phase shift over the operating frequency range of the phase shifter.