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1. 发明授权

US5140286A Oscillator with bias and buffer circuits formed in a die mounted with distributed elements on ceramic substrate 失效
标题翻译：具有偏置和缓冲电路的振荡器形成在安装有陶瓷衬底上的分布元件的管芯中
公开(公告)号：US5140286A
公开(公告)日：1992-08-18
申请号：US739573
申请日：1991-08-02
申请人： Gregory R. Black , Alexander W. Hietala , Darioush Agahi-Kesheh
发明人： Gregory R. Black , Alexander W. Hietala , Darioush Agahi-Kesheh
IPC分类号： H03B1/00 , H03B5/04 , H03B5/12 , H03B5/18 , H03L7/099 , H04B7/26
CPC分类号： H03B5/1231 , H03B5/1209 , H03B5/1243 , H03B2200/002 , H03B2200/0022 , H03B2200/0034 , H03B2200/0036 , H03B2200/0062 , H03B2200/0098 , H03B2201/0208 , H03B5/04
摘要： A voltage controlled oscillator and buffer amplifier circuit (211) is disclosed. The circuit is in a stacked configuration, whereby, the current from the power supply (361) is used by the buffer amplifier circuit and reused by the VCO circuit. The VCO circuit includes two transistors (333, 325). The transistors are set-up in a mirrored configuration, so that one of the transistors (325) controls the bias current in the other transistor (333). Both of the transistors are integrated into a semiconductor circuit die (365), thus, matching the thermal characteristics of the transistors (333, 325) and improving control of the bias current. The die (365) is bonded to a ceramic substrate (601). The substrate (601) has connectivity paths for connecting components in the circuit die to components external to the circuit die. Some of the connectivity paths are made of a material and length to form passive circuit elements.
摘要翻译：公开了压控振荡器和缓冲放大器电路（211）。电路处于堆叠结构，由此来自电源（361）的电流由缓冲放大器电路使用并由VCO电路重新使用。 VCO电路包括两个晶体管（333,325）。晶体管被设置成镜像配置，使得晶体管（325）中的一个控制另一个晶体管（333）中的偏置电流。两个晶体管都集成到半导体电路管芯（365）中，从而匹配晶体管（333,325）的热特性并改善偏流的控制。模具（365）结合到陶瓷基板（601）上。基板（601）具有用于将电路管芯中的部件连接到电路管芯外部的连接路径。一些连接路径由材料和长度构成以形成无源电路元件。

2. 发明授权

US06529712B1 System and method for amplifying a cellular radio signal 有权
标题翻译：用于放大蜂窝无线电信号的系统和方法
公开(公告)号：US06529712B1
公开(公告)日：2003-03-04
申请号：US09383122
申请日：1999-08-25
申请人： William J. Domino , Darioush Agahi-Kesheh , Dmitriy Rozenblit , Mark Oskowsky
发明人： William J. Domino , Darioush Agahi-Kesheh , Dmitriy Rozenblit , Mark Oskowsky
IPC分类号： H04Q720
CPC分类号： H04W88/04 , H04W84/042
摘要： A system for amplifying a transmitted signal is provided. The system includes a receiver that receives the transmitted signal and generates a conducted signal from the transmitted signal. A non-linear oscillator, such as a synchronous oscillator that is operating in a borderline stable condition, is connected to the receiver. The non-linear oscillator receives the transmitted signal from the receiver and amplifies the transmitted signal without modifying the frequency of the transmitted signal, or its relative phase. The amplification by a non-linear oscillator causes the signal to be amplified relative to the noise, thus improving the signal-to-noise ratio.
摘要翻译：提供一种放大发送信号的系统。该系统包括接收发射信号并从所发射的信号产生传导信号的接收机。非线性振荡器，例如在边界线稳定状态下工作的同步振荡器，被连接到接收器。非线性振荡器接收来自接收机的发送信号，并放大发送信号，而不修改发送信号的频率或其相对相位。非线性振荡器的放大使信号相对于噪声放大，从而提高了信噪比。

3. 发明授权

US5278527A Dielectric filter and shield therefor 失效
标题翻译：介质滤波器及其屏蔽
公开(公告)号：US5278527A
公开(公告)日：1994-01-11
申请号：US916048
申请日：1992-07-17
申请人： Robert Kenoun , Darioush Agahi-Kesheh
发明人： Robert Kenoun , Darioush Agahi-Kesheh
IPC分类号： H01P1/205 , H05K9/00 , H01P1/20
CPC分类号： H01P1/2056
摘要： A filter assembly comprised of a dielectric filter and a shield positioned about the dielectric filter. The dielectric filter may be surface-mounted upon a circuit board and includes at least one notch formed to extend along a side face surface thereof. The shield is integrally formed of two sheets of an electromagnetic wave-absorptive material interconnected by a shoulder forming a right angle to fit about two sides of the dielectric filter. At least one projecting prong, corresponding in number and position with the at least one notch of the dielectric filter, extends beyond an end surface of one of the sheets of the shield to interfittingly engage with a corresponding notch formed on the filter. The shield is positioned about the dielectric filter prior to tuning of the filter, and openings are formed to extend through the shield to permit access to the dielectric filter to permit tuning thereof once the shield is positioned thereabout.
摘要翻译：由介质滤波器和围绕介质滤波器定位的屏蔽件组成的滤波器组件。介质滤波器可以表面安装在电路板上，并且包括形成为沿其侧面表面延伸的至少一个凹口。屏蔽件由两片电磁波吸收材料整体形成，电磁波吸收材料通过形成直角的肩部相互连接，以适应介质滤波器的两侧。在介质过滤器的至少一个凹口处的数量和位置对应的至少一个突出尖端延伸超过屏蔽件的一个片材的端表面，以与形成在过滤器上的相应凹口相互配合地接合。在调谐过滤器之前，屏蔽件围绕介电滤波器定位，并且形成开口以延伸穿过屏蔽件，以允许接触介质滤波器，以便一旦屏蔽件位于其周围就能调谐它们。

4. 发明授权

US06192228B1 Method and apparatus for improving the sensitivity of an RF receiver at certain frequencies 失效
标题翻译：用于提高RF接收机在某些频率下的灵敏度的方法和装置
公开(公告)号：US06192228B1
公开(公告)日：2001-02-20
申请号：US09153008
申请日：1998-09-11
申请人： Darioush Agahi-Kesheh , William J. Domino , Mark Oskowsky , Dmitriy Rozenblit
发明人： Darioush Agahi-Kesheh , William J. Domino , Mark Oskowsky , Dmitriy Rozenblit
IPC分类号： H04Q732
CPC分类号： H04B1/1027 , H04B15/04 , H04B2215/064 , H04B2215/065
摘要： A method and apparatus for improving the sensitivity of a radio frequency (RF) receiver at certain frequencies suffering from co-channel interference. In the preferred embodiment, when a reference frequency, FREF, generates significant harmonics for a received RF signal in a selected channel, the reference frequency is varied or offset by a small amount, &Dgr;F. The harmonics of the offset reference frequency, F′REF=FREF±&Dgr;F, are thereby shifted away from the frequency of the received RF signal, thus reducing co-channel interference. The offset amount &Dgr;F is chosen such that the same injection frequency synthesized from FREF can still be synthesized from FREF±&Dgr;F by shifting N by an integer amount, preferably to N+1 or N−1. However, the invention encompasses shifting N by other integer amounts.
摘要翻译：一种在同频干扰的某些频率下改善射频（RF）接收机的灵敏度的方法和装置。在优选实施例中，当参考频率FREF在所选择的信道中产生接收的RF信号的显着谐波时，参考频率被改变或偏移少量DELTAF。因此，偏移参考频率F'REF = FREF±DELTAF的谐波从接收的RF信号的频率偏移，从而减少同信道干扰。选择偏移量DELTAF，使得从FREF合成的相同注入频率仍然可以通过将N移位整数，优选为N + 1或N-1，从FREF±DELTAF合成。然而，本发明包括将N移位其他整数。

5. 发明授权

US5488335A Multi-passband dielectric filter construction having a filter portion including at least a pair of dissimilarly-sized resonators 失效
标题翻译：多通带介质滤波器结构具有包括至少一对不同尺寸的谐振器的滤波器部分
公开(公告)号：US5488335A
公开(公告)日：1996-01-30
申请号：US322118
申请日：1994-10-12
申请人： Darioush Agahi-Kesheh , Zdravko M. Zakman , Robert Kenoun
发明人： Darioush Agahi-Kesheh , Zdravko M. Zakman , Robert Kenoun
IPC分类号： H01P1/205 , H01P1/213 , H01P1/20
CPC分类号： H01P1/2136 , H01P1/2056
摘要： A filter duplexer, such as a filter duplexer for a radio transceiver, of minimum dimensions is disclosed. First and second filter portions of the duplexer each include a plurality of transmission lines. Cross sections of the plurality of transmission lines of each filter portion are of at least two different geometries. The amount of coupling between adjacent ones of the resonators, as well as the loading capacitances of such resonators, is controlled by the relative geometric configuration of the adjacent ones of the resonators. Because the amount of coupling between the resonators and the loading capacitances of the resonators is determinative of the filter characteristics of the filter duplexer, desired filter characteristics may be effectuated by careful selection of the geometric configurations of the resonators of each filter portion.
摘要翻译：公开了一种具有最小尺寸的滤波器双工器，例如用于无线电收发器的滤波器双工器。双工器的第一和第二滤波器部分各自包括多条传输线。每个过滤器部分的多个传输线的横截面具有至少两个不同的几何形状。谐振器的相邻谐振器之间的耦合量以及这些谐振器的负载电容由相邻谐振器的相对几何构型来控制。由于谐振器之间的耦合量和谐振器的负载电容量决定了滤波器双工器的滤波器特性，因此可以通过仔细选择每个滤波器部分的谐振器的几何结构来实现所期望的滤波器特性。

6. 发明授权

US5130683A Half wave resonator dielectric filter construction having self-shielding top and bottom surfaces 失效
标题翻译：半波谐振器介质滤波器结构具有自屏蔽顶面和底面
公开(公告)号：US5130683A
公开(公告)日：1992-07-14
申请号：US678419
申请日：1991-04-01
申请人： Darioush Agahi-Kesheh , Raymond L. Sokola , Frederick L. Sassin
发明人： Darioush Agahi-Kesheh , Raymond L. Sokola , Frederick L. Sassin
IPC分类号： H01P1/205 , H01P5/08 , H01P11/00
CPC分类号： H01P1/2056
摘要： A dielectric block filter construction having resonating cavities formed therein to form one half wave-wavelength resonators thereby. The resonating cavities span opposing side surfaces of the dielectric block forming the dielectric block filter to define openings at the opposing side surfaces. Outer surfaces of the dielectric block, including the opposing side surfaces having the openings defined thereat, are coated with an electrically-conductive material except for portions of one side surface of the dielectric block about peripheral surfaces of input and output couplers formed on the one surface. Because the opposing outer surfaces are coated with the electrically-conductive material, the opposing outer surfaces of the dielectric block are self-shielding to prevent propagation of electromagnetic radiation through openings defined by the resonating cavities of the dielectric block.
摘要翻译：具有形成在其中形成一个半波长波长谐振器的谐振腔的介质阻挡滤波器结构。谐振腔跨越形成介质块过滤器的介电块的相对侧表面，以在相对的侧表面处限定开口。介质块的外表面包括具有限定在其上的开口的相对的侧表面，除了形成在一个表面上的输入和输出耦合器的周边表面之外，还包括导电材料，除了介质块的一个侧表面的部分。由于相对的外表面被导电材料涂覆，介电块的相对的外表面是自屏蔽的，以防止电磁辐射通过由介质块的谐振腔限定的开口的传播。

7. 发明授权

US4823098A Monolithic ceramic filter with bandstop function 失效
标题翻译：具有带阻功能的单片陶瓷滤波器
公开(公告)号：US4823098A
公开(公告)日：1989-04-18
申请号：US206384
申请日：1988-06-14
申请人： David M. DeMuro , Darioush Agahi-Kesheh
发明人： David M. DeMuro , Darioush Agahi-Kesheh
IPC分类号： H01P1/205 , H01P1/213 , H04B1/48 , H01P1/202
CPC分类号： H01P1/2136 , H01P1/2056
摘要： A ceramic filter includes a multiple zero bandstop filter function. The ceramic filter has a dielectric block with top and bottom surfaces and at least two holes, including a first hole and a second hole, extending from the top surface toward the bottom surface of the block. The block is selectively covered with a conductive material to provide a transmission line resonator for each of the two holes. The filter also includes an input electrode coupled to the dielectric means at a predetermined distance from the first hole, and an output electrode coupled to the dielectric means at a predetermined distance from the second hole. Finally, conductive plating, in the form of a transmission line, is contiguously disposed on the dielectric means adjacent the two holes and coupled thereto to provide a bandstop filter function with a zero represented at each hole.

8. 发明授权

US06697613B1 System for canceling internal interference in a receiver 有权
标题翻译：用于消除接收机内部干扰的系统
公开(公告)号：US06697613B1
公开(公告)日：2004-02-24
申请号：US09634081
申请日：2000-08-08
申请人： William J. Domino , Morten Damgaard , Darioush Agahi-Kesheh , Arvind Arora
发明人： William J. Domino , Morten Damgaard , Darioush Agahi-Kesheh , Arvind Arora
IPC分类号： H04B110
CPC分类号： H04B1/1036
摘要： A system for reducing internal interference in a radio-frequency (RF) receiver includes providing a plurality of time slots within a frame where the receiver is configured to receive external RF signals during a receive time slot within the frame. Data is collected during a receive time slot of a frame, and a receive data value is calculated corresponding to the collected data. A predetermined portion of the data collected is inspected, and a bias data value is calculated. The bias value is attributable to interference signals caused by the internal interference. The bias data value is added to an accumulator, and over time, a running average of the bias data values is determined. A portion of the running average is subtracted from the sample stream of data to provide output data corresponding to the external RF signals absent the internal interference.
摘要翻译：用于减少射频（RF）接收机内部干扰的系统包括在帧内提供多个时隙，其中接收机被配置为在帧内的接收时隙期间接收外部RF信号。在帧的接收时隙期间收集数据，并且对应于所收集的数据计算接收数据值。检查收集的数据的预定部分，并计算偏差数据值。偏置值归因于由内部干扰引起的干扰信号。偏置数据值被添加到累加器，并且随着时间的推移，确定偏置数据值的运行平均值。从采样数据流中减去运行平均值的一部分，以提供对应于不存在内部干扰的外部RF信号的输出数据。

9. 发明授权

US06430402B1 Power amplifier saturation prevention method, apparatus, and communication system incorporating the same 有权
标题翻译：功率放大器饱和预防方法，装置以及包含该功能的通信系统
公开(公告)号：US06430402B1
公开(公告)日：2002-08-06
申请号：US09152439
申请日：1998-09-14
申请人： Darioush Agahi-Kesheh
发明人： Darioush Agahi-Kesheh
IPC分类号： H03C162
CPC分类号： H03G3/3047 , H03F1/34 , H03F1/345
摘要： An apparatus for controlling the power level of an output signal from the output of an electronic amplifier. The electronic amplifier has a control signal input for receiving an amplifier control signal and has a power input for receiving current from a power supply. The apparatus comprises an amplifier output power detector, coupled to the output of the amplifier, used for generating a power measurement signal representing the output power of the amplifier. The apparatus contains a current detector arranged to detect the current received by the amplifier from the power supply and to provide a current measurement signal dependent on the amount of current received from the power supply. The apparatus contains a digital signal processor which receives the current measurement signal and provides a reference signal dependant on the current measurement signal. The apparatus also contains a comparator coupled to receive the reference signal and the power measurement signal which is used for generating the control signal to prevent saturation of the amplifier.
摘要翻译：一种用于控制来自电子放大器的输出的输出信号的功率电平的装置。电子放大器具有用于接收放大器控制信号的控制信号输入，并且具有用于从电源接收电流的电力输入。该装置包括耦合到放大器的输出的放大器输出功率检测器，用于产生表示放大器的输出功率的功率测量信号。该装置包括电流检测器，其布置成检测由放大器从电源接收的电流，并提供取决于从电源接收的电流量的电流测量信号。该装置包含接收当前测量信号并提供取决于当前测量信号的参考信号的数字信号处理器。该装置还包括比较器，其耦合以接收参考信号和用于产生控制信号以防止放大器饱和的功率测量信号。

10. 发明授权

US06377117B2 Method and system for efficiently transmitting energy from an RF device 有权
标题翻译：用于从RF设备有效地传输能量的方法和系统
公开(公告)号：US06377117B2
公开(公告)日：2002-04-23
申请号：US09361865
申请日：1999-07-27
申请人： Mark Oskowsky , Darioush Agahi-Kesheh
发明人： Mark Oskowsky , Darioush Agahi-Kesheh
IPC分类号： H03F114
CPC分类号： H03F1/0277
摘要： A method and system for efficiently transmitting RF energy from a RF device is disclosed. The method and system comprises a multi-stage power amplifier having a plurality of power amplifier stages arranged in parallel with associated switches for selectively switching on or off the plurality of power amplifier stages to produce a desired power level. By selectively switching on or off each individual power amplifier's associated switches at predetermined operating point's produces the desired power level for maximum efficiency. Additionally, more than one connected multi-stage power amplifiers each having a plurality of power amplifier stages arranged in parallel with associated switches for selectively switching on or off the plurality of power amplifier stages may be used to produce a desired power level.
摘要翻译：公开了一种用于从RF设备有效地发送RF能量的方法和系统。该方法和系统包括多级功率放大器，该多级功率放大器具有与相关开关并联布置的多个功率放大器级，用于选择性地接通或关闭多个功率放大器级以产生期望的功率电平。通过在预定的工作点选择性地打开或关闭每个单独的功率放大器相关联的开关，产生期望的功率电平以获得最大的效率。此外，可以使用多于一个的连接的多级功率放大器，每个功率放大器具有与相关开关并联布置的多个功率放大器级，用于选择性地接通或关闭多个功率放大器级，以产生期望的功率电平。

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