专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06731694B2 Isolator eliminator for a linear transmitter 失效
标题翻译：用于线性变送器的隔离器消除器
公开(公告)号：US06731694B2
公开(公告)日：2004-05-04
申请号：US09924051
申请日：2001-08-07
申请人： John Janos Bozeki , Michael Howard Baker , Paul Howe Gailus , David H. Minasi
发明人： John Janos Bozeki , Michael Howard Baker , Paul Howe Gailus , David H. Minasi
IPC分类号： H04L2549
CPC分类号： H04L27/368
摘要： An isolator eliminator for a linear transmitter receives a plurality of digital samples of an information signal and a drive signal sampled from a feedback loop at periodic time intervals and, responsive to processing the digital samples, provides high accuracy phase and level correction signals to the feedback loop. The phase and level correction signals maintain stable, linear operation of the feedback loop and limit splatter. In a preferred embodiment, the isolator eliminator includes a digital signal processor such that multiple communication protocols may be accommodated by changing software code executed by the processor.
摘要翻译：用于线性发射器的隔离器消除器以周期性时间间隔接收信号信号和从反馈回路采样的驱动信号的多个数字样本，并且响应于处理数字样本，向反馈提供高精度的相位和电平校正信号循环。相位和电平校正信号保持反馈回路的稳定，线性运行并限制飞溅。在优选实施例中，隔离器消除器包括数字信号处理器，使得可以通过改变由处理器执行的软件代码来容纳多个通信协议。

2. 发明授权

US5789995A Low loss electronic radio frequency switch 失效
标题翻译：低损耗电子射频开关
公开(公告)号：US5789995A
公开(公告)日：1998-08-04
申请号：US717025
申请日：1996-09-20
申请人： David H. Minasi
发明人： David H. Minasi
IPC分类号： H03H7/46 , H04B1/48 , H01P1/15 , H03H11/34 , H04B1/44
CPC分类号： H04B1/48 , H03H7/46
摘要： A low loss electronic radio frequency (RF) switch (100) for switching RF energy between an antenna port (115), a receiver port (113) and a transmit port (101) used in a two-way radio transceiver. The RF switch includes a first diode (105) connected between the transmit port (101) and the antenna port (115). A first capacitor (103) is connected between the transmit port (101) and a ground potential while an inductor (107) and second capacitor (111) are serially connected between the antenna port (115) and a receive port (113). A second diode (109) is connected between the inductor (107) and the second capacitor (111) and the ground potential. The antenna port (115) is normally connected with the receive port (113) when idle. When direct current is applied to the transmit port (101) the first diode (105) and second diode (109) are biased into a low impedance state connecting the antenna port (115) to the transmit port (101) and isolating the receive port (113) from the antenna port (115).
摘要翻译：一种用于在双向无线电收发器中使用的天线端口（115），接收器端口（113）和发射端口（101）之间切换RF能量的低损耗电子射频（RF）开关（100）。 RF开关包括连接在发送端口（101）和天线端口（115）之间的第一二极管（105）。第一电容器（103）连接在发送端口（101）和接地电位之间，而电感器（107）和第二电容器（111）串联连接在天线端口（115）和接收端口（113）之间。电感器（107）和第二电容器（111）之间连接有第二二极管（109）和地电位。天线端口（115）在空闲时通常与接收端口（113）连接。当直流电流施加到发射端口（101）时，第一二极管（105）和第二二极管（109）被偏置成将天线端口（115）连接到发射端口（101）的低阻抗状态，并隔离接收端口（113）从天线端口（115）发送。

3. 发明授权

US5596487A Apparatus for RF shielding radio circuitry 失效
标题翻译：射频屏蔽无线电电路设备
公开(公告)号：US5596487A
公开(公告)日：1997-01-21
申请号：US509147
申请日：1995-07-31
申请人： Julio C. Castaneda , David H. Minasi , Kok H. Chong , Roger D. Gamble
发明人： Julio C. Castaneda , David H. Minasi , Kok H. Chong , Roger D. Gamble
IPC分类号： H04B1/38 , H05K9/00 , H04B1/03
CPC分类号： H05K9/0033 , H04B1/3833 , Y10S174/35
摘要： First and second shielding portions (110, 112) formed of electroless plated plastic enclose a radio frequency (RF) board (108). Bosses (148) extend from inner surfaces (130, 142) of the first and second shielding portions (110, 112) to make contact with compressible ground clip members (126) located on the RF board (108).
摘要翻译：由化学镀塑料形成的第一和第二屏蔽部分（110,112）包围射频（RF）板（108）。凸起（148）从第一和第二屏蔽部分（110,112）的内表面（130,142）延伸以与位于RF板（108）上的可压缩接地夹构件（126）接触。

4. 发明授权

US5335133A Dual output battery with fault detect 失效
标题翻译：双输出电池，具有故障检测功能
公开(公告)号：US5335133A
公开(公告)日：1994-08-02
申请号：US799811
申请日：1991-11-29
申请人： Michael R. Bishop , David H. Minasi
发明人： Michael R. Bishop , David H. Minasi
IPC分类号： G01R31/36 , H02H9/00 , H02H3/28
CPC分类号： G01R31/3648 , H02H9/008 , Y10T307/383
摘要： Battery (300) includes a first redundant limiting circuit (302) for limiting the voltage and current levels which are outputted by the first limited battery output (308). A second redundant limiting circuit (304) provides for a second limited battery output (310). Connected to both the first (308) and second (310) battery outputs is a fault monitoring circuit (306), which monitors for any faults such as electrical shorts, occurring at any of the two battery outputs (308 or 310). The fault monitoring circuit (306) interrupts the appropriate output, if a fault, or a current limiting condition occurs. Battery (300) allows for radios which would otherwise not be able to achieve intrinsic safe level approvals to attain such approvals.
摘要翻译：电池（300）包括用于限制由第一有限电池输出（308）输出的电压和电流电平的第一冗余限制电路（302）。第二冗余限制电路（304）提供第二有限电池输出（310）。连接到第一（308）和第二（310）电池输出的是故障监测电路（306），其监测在两个电池输出（308或310）中的任一个处发生的任何故障，例如电短路。如果发生故障或电流限制条件，则故障监视电路（306）中断适当的输出。电池（300）允许无线电，否则将无法实现本质安全等级认证，以获得此类认证。

5. 发明授权

US5276912A Radio frequency power amplifier having variable output power 失效
标题翻译：具有可变输出功率的射频功率放大器
公开(公告)号：US5276912A
公开(公告)日：1994-01-04
申请号：US41525
申请日：1993-04-01
申请人： Kazimierz Siwiak , David H. Minasi
发明人： Kazimierz Siwiak , David H. Minasi
IPC分类号： H04B1/04 , H04B1/38
CPC分类号： H03F1/56 , H04B1/0458 , H04B2001/0416
摘要： A radio-frequency amplifier (50) has an impedance transformation network (66) with a control input (70) for controlling the transformation characteristic of the transformation network (66). The radio-frequency amplifier (50) amplifies an input signal to produce an amplified radio-frequency output signal to a load (68). The control circuit selects a power level for the output signal, in response to a control signal, by transforming the impedance of the load to a transformed impedance at the output of the radio-frequency amplifier, so that the efficiency of the radio-frequency amplifier is not substantially degraded as the power level for the output signal is changed.
摘要翻译：射频放大器（50）具有阻抗变换网络（66），其具有用于控制变换网络（66）的变换特性的控制输入（70）。射频放大器（50）放大输入信号以产生对负载（68）的放大的射频输出信号。控制电路响应于控制信号，通过将负载的阻抗变换为在射频放大器的输出处的变换阻抗来选择输出信号的功率电平，使得射频放大器的效率随着输出信号的功率电平发生变化，基本上不会劣化。

6. 发明授权

US06278333B1 Phase lock loop with dual state charge pump and method of operating the same 有权
标题翻译：具有双态电荷泵的锁相环及其操作方法
公开(公告)号：US06278333B1
公开(公告)日：2001-08-21
申请号：US09514802
申请日：2000-02-29
申请人： Quang C. Le , Ronald H. Deck , Richard B. Meador , David H. Minasi
发明人： Quang C. Le , Ronald H. Deck , Richard B. Meador , David H. Minasi
IPC分类号： H03L708
CPC分类号： H03L7/107 , H03L7/0893 , H03L7/0898 , H03L7/1976
摘要： A phase lock loop (100) includes a dual-state charge pump (120) having a first current source (220), a second current source (230) coupled in series to the first current source, a third current source (240), a fourth current source (250) coupled in series to the third current source, and control circuitry (210) coupled to the first, second, third, and fourth current sources. The charge pump can be programmed to be in an adapt mode with large up and down currents or in a normal mode with small up and down currents. The duration of the adapt mode can be programmed by a timer. The phase lock loop has a wide loop bandwidth and a faster lock time during the adapt mode and a narrow loop bandwidth and less phase noise during the normal mode.
摘要翻译：锁相环（100）包括具有第一电流源（220），与第一电流源串联耦合的第二电流源（230）的双态电荷泵（120），第三电流源（240）耦合到第三电流源的第四电流源（250）和耦合到第一，第二，第三和第四电流源的控制电路（210）。电荷泵可以编程为具有较大上下电流的适应模式，或者在正常模式下，具有较小的上下电流。适配模式的持续时间可以由定时器编程。在正常模式期间，锁相环具有较宽的环路带宽和适应模式下较快的锁定时间以及较窄的环路带宽和较小的相位噪声。

7. 发明授权

US06175724B1 Band switchable injection oscillator and communication device using same 失效
标题翻译：带式可切换注射振荡器和使用其的通信装置
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。

8. 发明授权

US5854578A Active circuit having a temperature stable bias 失效
标题翻译：有源电路具有温度稳定的偏置
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。

9. 发明授权

US5668561A Antenna coupler 失效
标题翻译：天线耦合器
公开(公告)号：US5668561A
公开(公告)日：1997-09-16
申请号：US556696
申请日：1995-11-13
申请人： Alessandro Perrotta , David H. Minasi
发明人： Alessandro Perrotta , David H. Minasi
IPC分类号： H01Q1/24
CPC分类号： H01Q1/242
摘要： An antenna coupler (100) for use in a mobile adaptor (102, 300) transfers radio frequency (RF) energy between a portable radio antenna system (204) and an external antenna (124) with minimal coupling losses. The antenna coupler (100) includes a resonator patch (110) and an electromagnetic tuning element (112) forming side walls on a substrate for receiving the portable antenna system (204). The electromagnetic tuning element (112) controls the impedance between the resonator patch (110) and the portable antenna system (204) while the resonator patch transfers the RF energy between the portable radio antenna and the external antenna (124).
摘要翻译：用于移动适配器（102,300）中的天线耦合器（100）以最小的耦合损耗在便携式无线电天线系统（204）和外部天线（124）之间传送射频（RF）能量。天线耦合器（100）包括谐振器片（110）和形成用于接收便携式天线系统（204）的衬底上的侧壁的电磁调谐元件（112）。电磁调谐元件（112）控制谐振器贴片（110）和便携式天线系统（204）之间的阻抗，同时谐振器贴片在便携式无线电天线和外部天线（124）之间传送RF能量。

10. 发明授权

US5133676A Impedance matched RF spring contact 失效
标题翻译：阻抗匹配RF弹簧触点
公开(公告)号：US5133676A
公开(公告)日：1992-07-28
申请号：US710628
申请日：1991-06-05
申请人： Stephen J. Hutchison , David H. Karl , David H. Minasi
发明人： Stephen J. Hutchison , David H. Karl , David H. Minasi
IPC分类号： H01R24/44 , H01R24/50
CPC分类号： H01R24/50 , H01R24/44 , H01R2103/00 , Y10S439/916
摘要： An RF interconnect assembly includes a ground plane (124) and a radio circuit (109), and an RF connector (126) having a signal conductor (127) and a ground conductor (130) where the ground conductor (130) is coupled to the ground plane (124). Located a predetermined distance (d) above the ground plane (124), a spring contact (140) provides a constant impedance transmission line connection between the RF connector (126) and the radio circuit (109).
摘要翻译： RF互连组件包括接地平面（124）和无线电电路（109），以及具有信号导体（127）和接地导体（130）的RF连接器（126），其中接地导体（130）耦合到接地平面（124）。位于接地平面（124）上方的预定距离（d）处，弹簧触点（140）在RF连接器（126）和无线电路（109）之间提供恒定阻抗的传输线连接。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式