公开(公告)号：US06175724B1

公开(公告)日：2001-01-16

申请号：US09127924

申请日：1998-07-31

申请人： David H. Minasi ,  Gustavo D. Leizerovich ,  Peter J. Yeh

发明人： David H. Minasi ,  Gustavo D. Leizerovich ,  Peter J. Yeh

IPC分类号： H04B100

CPC分类号： H04B1/406 ,  H04B1/00 ,  H04B1/28

摘要： The RF section of a communication device (100) includes a receiver (106), a transmitter (108), first injection frequency generation circuit (120), and an intermediate frequency (IF) generation circuit (124). The IF generation circuit has a shared output coupled to both the receiver and transmitter, as well as a control circuit (118) for feedback control purposes. The IF generation circuit is used to generate IF for both the receiver and transmitter, thus using fewer components that two separate IF generation circuits. It includes two differently tuned voltage controlled oscillators (202, 204) which are selectively and exclusively powered by first and second power switches (234, 236), respectively. The control circuit provides a single control voltage corresponding to a desired frequency pair to both VCOs at a common control input, then selects the appropriate VCO depending on whether the communication device is receiving or transmitting.

摘要翻译： 通信设备（100）的RF部分包括接收机（106），发射机（108），第一喷射频率产生电路（120）和中频（IF）生成电路（124）。 IF产生电路具有耦合到接收器和发射器的共享输出以及用于反馈控制目的的控制电路（118）。 IF发生电路用于为接收机和发射机两者产生IF，因此使用两个独立的IF发生电路的较少组件。 它包括两个不同调谐的电压控制振荡器（202,204），它们分别由第一和第二功率开关（234,236）选择性地和排他地供电。 控制电路在公共控制输入端向两个VCO提供对应于期望频率对的单个控制电压，然后根据通信设备是正在接收还是发送来选择合适的VCO。

公开(公告)号：US5986514A

公开(公告)日：1999-11-16

申请号：US13281

申请日：1998-01-26

申请人： Raul Salvi ,  Gustavo D. Leizerovich ,  Peter J. Yeh

发明人： Raul Salvi ,  Gustavo D. Leizerovich ,  Peter J. Yeh

IPC分类号： H03L7/099 ,  H03L7/08 ,  H03L7/085

CPC分类号： H03L7/099 ,  H03L2207/06

摘要： A method and apparatus for biasing the voltage controlled oscillator (VCO) (110) of a Phase Locked Loop (PLL) (100) includes a bias circuit (114) providing a peak minimum/maximum voltage detector (202) tied to the control line (116) of the PLL (100). During operation, the detector (202) detects a minimum or maximum voltage on the VCO control line (116) as the bias control voltage (118) applied to the VCO (110) is varied. Detection of such a minimum or maximum voltage is equivalent to the detection of a minimum or a maximum frequency, which in turn equates to the detection of an optimal bias condition for noise.

摘要翻译： 用于偏置锁相环（PLL）（100）的压控振荡器（VCO）（110）的方法和装置包括偏置电路（114），该偏置电路提供与控制线相连的峰值最小/最大电压检测器（202） （100）的（116）。 在操作期间，当施加到VCO（110）的偏置控制电压（118）改变时，检测器（202）检测VCO控制线（116）上的最小或最大电压。 检测这样的最小或最大电压等于最小或最大频率的检测，这反过来等于噪声的最佳偏置条件的检测。

公开(公告)号：US5854578A

公开(公告)日：1998-12-29

申请号：US929480

申请日：1997-09-15

申请人： David H. Minasi ,  Peter J. Yeh ,  Roger A. Davenport ,  Gustavo V. Leizerovich

发明人： David H. Minasi ,  Peter J. Yeh ,  Roger A. Davenport ,  Gustavo V. Leizerovich

IPC分类号： H03B5/04 ,  H03B5/12 ,  H03F1/30 ,  H03L1/02

CPC分类号： H03F1/302 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2200/0008 ,  H03B2200/0062 ,  H03B2200/0082 ,  H03B2200/0088 ,  H03B5/04 ,  H03F2200/372 ,  H03L1/02

摘要： An active circuit includes an amplifying transistor (102), a voltage reference (208), and an active bias circuit. The active bias circuit controls the operating point of the amplifying transistor, and includes a bias transistor (224) which is controlled by the voltage reference and the collector current of the amplifying transistor. As the temperature of the amplifying transistor changes, the tendency of the collector current to change is counter-acted by the bias transistor and the voltage reference.

摘要翻译： 有源电路包括放大晶体管（102），电压基准（208）和有源偏置电路。 有源偏置电路控制放大晶体管的工作点，并且包括由放大晶体管的参考电压和集电极电流控制的偏置晶体管（224）。 随着放大晶体管的温度变化，集电极电流变化的趋势与偏置晶体管和参考电压相反。

公开(公告)号：US5512862A

公开(公告)日：1996-04-30

申请号：US376615

申请日：1995-01-23

申请人： Branko Avanic ,  Peter J. Yeh ,  Leng H. Ooi

发明人： Branko Avanic ,  Peter J. Yeh ,  Leng H. Ooi

IPC分类号： H03B1/00 ,  H03B1/04 ,  H03B5/18

CPC分类号： H03B5/1847 ,  H03B2200/0024 ,  H03B2200/004 ,  H03B2200/0086 ,  H03B2200/0088 ,  H03B2201/0208 ,  H03B2202/025 ,  H03B2202/05

摘要： An oscillator (200) with improved sideband noise is disclosed. This improvement is accomplished without affecting the Q or the output power of the oscillator (200). The improvement is realized by increasing the rate of change of reactance over frequency. The increase in the rate of change is realized by placing two transmission lines (208, 210) in close proximity of each other. This increase assures oscillation while minimizing the sideband noise, and providing maximum bandwidth.

摘要翻译： 公开了具有改进的边带噪声的振荡器（200）。 这种改进是在不影响振荡器（200）的Q或输出功率的情况下完成的。 通过提高频率上的电抗变化率来实现改进。 通过将两个传输线（208,210）彼此靠近放置来实现变化率的增加。 这种增加确保振荡，同时最小化边带噪声，并提供最大带宽。

公开(公告)号：US5313662A

公开(公告)日：1994-05-17

申请号：US861360

申请日：1992-03-30

申请人： Leng H. Ooi ,  Peter J. Yeh ,  Branko Avanic

发明人： Leng H. Ooi ,  Peter J. Yeh ,  Branko Avanic

IPC分类号： H01P1/203 ,  H04B1/18 ,  H04B1/16

CPC分类号： H01P1/20381 ,  H04B1/18

摘要： A bandpass filter, having an input port and an output port, comprises a first microstrip split-ring resonator coupled to input port, and a second microstrip split-ring resonator coupled to the first microstrip split-ring resonator, and coupled to the output port. A lumped or distributed capacitance is disposed between the first microstrip split-ring resonator and the second microstrip split-ring resonator.

摘要翻译： 具有输入端口和输出端口的带通滤波器包括耦合到输入端口的第一微带分离环谐振器和耦合到第一微带分离环谐振器的第二微带分离环谐振器，并耦合到输出端口 。 集中或分布电容设置在第一微带分离环谐振器和第二微带分裂环谐振器之间。

公开(公告)号：US5164690A

公开(公告)日：1992-11-17

申请号：US719449

申请日：1991-06-24

申请人： Peter J. Yeh ,  Branko Avanic ,  Leng H. Ooi

发明人： Peter J. Yeh ,  Branko Avanic ,  Leng H. Ooi

IPC分类号： H01P1/203

CPC分类号： H01P1/20381

摘要： A multipole bandpass filter (40) comprises a first microstrip split-ring resonator (12), having at least a first edge and a second edge, the first edge having a gap (20) therein, and an input. The bandpass filter (40) also comprises a second microstrip split-ring resonator (14), having at least a first edge and a second edge, the second edge of the second microstrip split-ring resonator comprising a gap (26) therein and a balanced output (30, 32). The bandpass filter also includes at least one straight line quasi-combline resonator (22), disposed between the first microstrip split-ring resonator, and the second microstrip split-ring resonator.

摘要翻译： 多极带通滤波器（40）包括第一微带分裂环谐振器（12），其具有至少第一边缘和第二边缘，第一边缘在其中具有间隙（20）和输入。 带通滤波器（40）还包括具有至少第一边缘和第二边缘的第二微带分裂环谐振器（14），第二微带分裂环谐振器的第二边缘包括其中的间隙（26）和 平衡输出（30,32）。 带通滤波器还包括设置在第一微带分裂环谐振器和第二微带分离环谐振器之间的至少一个直线准梳状谐振器（22）。

公开(公告)号：US5621362A

公开(公告)日：1997-04-15

申请号：US597081

申请日：1996-02-05

申请人： John K. McKinney ,  Peter J. Yeh ,  Branko Avanic

发明人： John K. McKinney ,  Peter J. Yeh ,  Branko Avanic

IPC分类号： H03B5/12 ,  H03B5/18

CPC分类号： H03B5/1847 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243

摘要： An oscillator (100) includes a tank circuit (102) coupled to a an active circuit (108). The feedback (104) provides the necessary feedback between the tank and the active circuit necessary for oscillation. The active circuit (108) is biased via a biasing circuit (106) and coupled out to a load via an external coupling (110). The active circuit (108) includes two transistors (124, 126) coupled to each other in a cascode configuration. Transistor (126) provides the collector current for transistor (124) while preventing it from entering saturation prematurely. The biasing circuit (106) provides sufficient current drain for the transistor (126) in order to provide for optimum phase noise and bandwidth performance of the oscillator 100.

摘要翻译： 振荡器（100）包括耦合到有源电路（108）的振荡电路（102）。 反馈（104）在油箱和振荡所需的有源电路之间提供必要的反馈。 有源电路（108）经由偏置电路（106）偏置，并通过外部耦合（110）耦合到负载。 有源电路（108）包括以共源共享配置彼此耦合的两个晶体管（124,126）。 晶体管（126）为晶体管（124）提供集电极电流，同时防止其过早进入饱和。 偏置电路（106）为晶体管（126）提供足够的电流漏极，以便提供振荡器100的最佳相位噪声和带宽性能。

公开(公告)号：US5057803A

公开(公告)日：1991-10-15

申请号：US561117

申请日：1990-08-01

申请人： Leng H. Ooi ,  Peter J. Yeh ,  Branko Avanic

发明人： Leng H. Ooi ,  Peter J. Yeh ,  Branko Avanic

IPC分类号： H01P1/203

CPC分类号： H01P1/20363 ,  H01P1/20381

摘要： A stripline split-ring resonator bandpass filter comprises first and second conducting layers and first and second substrates connected to each other between the conducting layers. A first stripline ring resonator is located on the top side of the second nonconducting substrate and is coupled to the input port of the BPF. The first stripline ring resonator has a gap located therein. A second stripline ring resonator is also located on the top side of the second nonconducting substrate between the first stripline ring resonator and the output port of the BPF. The second stripline ring resonator has a gap located therein. The first substrate has at least two slots therein to allow lumped capacitors to be placed in the gaps in the first and second ring resonators.

摘要翻译： 带状线分离环谐振器带通滤波器包括第一和第二导电层以及在导电层之间彼此连接的第一和第二基板。 第一带状线环谐振器位于第二非导电衬底的顶侧，并且耦合到BPF的输入端口。 第一带状线环谐振器具有位于其中的间隙。 第二带状线环谐振器也位于第二非导体衬底的顶侧，位于第一带状线环谐振器和BPF的输出端口之间。 第二带状线环谐振器在其中具有间隙。 第一衬底在其中具有至少两个槽，以允许集中的电容器放置在第一和第二环形谐振器的间隙中。

公开(公告)号：US06728525B1

公开(公告)日：2004-04-27

申请号：US09654538

申请日：2000-09-01

申请人： Gustavo V. Leizerovich ,  Peter J. Yeh

发明人： Gustavo V. Leizerovich ,  Peter J. Yeh

IPC分类号： H04B700

CPC分类号： H04B1/006 ,  H04B1/005 ,  H04B1/406

摘要： A system and method is provided for generating a second LO signal to a second mixer of a plurality of receivers employed in a multimode communication device. A single PLO and VCO provides a high frequency second LO signal that is divided by divider components to provide a number of lower frequency second LO signals. The different high frequency second LO signal and the number of lower frequency second LO signals may be utilized for providing second LO signals for component employed in receiving communications from radio devices employing different communication standards and/or frequency ranges.

摘要翻译： 提供了一种系统和方法，用于产生第二LO信号到多模通信设备中采用的多个接收机的第二混频器。 单个PLO和VCO提供高频第二LO信号，由分频器分量分频以提供多个较低频率的第二LO信号。 可以利用不同的高频第二LO信号和较低频率的第二LO信号的数量来提供用于从采用不同通信标准和/或频率范围的无线电设备接收通信中的组件的第二LO信号。

公开(公告)号：US06194975B1

公开(公告)日：2001-02-27

申请号：US09460058

申请日：1999-12-13

申请人： Gustavo D. Leizerovich ,  Peter J. Yeh

发明人： Gustavo D. Leizerovich ,  Peter J. Yeh

IPC分类号： H03B512

CPC分类号： H03B5/1231 ,  H03B5/1203 ,  H03B5/1243

摘要： A dual band VCO selects between the oscillator output frequencies by switching the resonant circuit elements in the active circuit. For each output frequency selected, the oscillator produces a single frequency signal and additional energy in the form of phase noise. This phase noise may be from sideband noise produced by modulation of the single frequency or produced by the active device in the oscillator as flicker noise, or the noise figure of the active device under large signal conditions or the filtering effect or the resonant circuit. Phase noise is reduced by shifting the bias point for the active device to the level where phase noise is minimum for each output frequency. At the time the output frequency is selectively switched, the bias to the active device is selectively switched to an optimum bias level for minimum phase noise for each respective selected frequency.

摘要翻译： 双频带VCO通过切换有源电路中的谐振电路元件在振荡器输出频率之间进行选择。 对于所选择的每个输出频率，振荡器以相位噪声的形式产生单个频率信号和附加能量。 该相位噪声可以来自由单个频率的调制产生的边带噪声或由振荡器中的有源器件产生的边带噪声，作为闪烁噪声，或者在大信号条件下的有源器件的噪声系数或滤波效应或谐振电路。 通过将有源器件的偏置点移动到每个输出频率的相位噪声最小的电平来减小相位噪声。 在选择性地切换输出频率时，对于每个相应的选定频率，有源器件的偏置被选择性地切换到用于最小相位噪声的最佳偏置电平。