公开(公告)号：US06600388B2

公开(公告)日：2003-07-29

申请号：US10112031

申请日：2002-04-01

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H01P900

CPC classification number: H01P1/205 ,  H01P5/16 ,  H03F1/3229 ,  H03F2200/198

Abstract: A delay circuit for the secondary path of a feed-forward high power amplifier is disclosed. A first 3 dB quadrature hybrid coupler is coupled to first and second resonator circuits that each includes a varactor circuit and are resonant at a first resonant frequency. The output of the first hybrid coupler is coupled to the input of a second 3 dB quadrature hybrid coupler. The second hybrid coupler is coupled to third and fourth resonator circuits that each includes a varactor circuit and are resonant at a second resonant frequency that is greater than the first resonant frequency. The overall combined delay response of the first hybrid coupler and the second hybrid coupler appearing at the fourth node of the second hybrid coupler is substantially constant between the first resonant frequency and the second resonant frequency.

公开(公告)号：US06342825B2

公开(公告)日：2002-01-29

申请号：US09740006

申请日：2000-12-20

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H01P1208

CPC classification number: H01P1/2084

Abstract: A bandpass filter having three waveguide cavities probelessly coupled in a tri-section for producing an asymmetric response about a passband. In another aspect, the bandpass filter also includes first and second waveguide tri-sections coupled in series via a common waveguide cavity, providing a bandpass waveguide filter having transmission zeros on only one side a filter passband.

Abstract translation: 具有三个波导腔的带通滤波器，其三维部分无意地耦合，用于产生关于通带的不对称响应。 另一方面，带通滤波器还包括通过公共波导腔串联耦合的第一和第二波导三段，提供带通波导滤波器，其仅在一侧具有滤波器通带的传输零点。

公开(公告)号：US20110234336A1

公开(公告)日：2011-09-29

申请号：US13049343

申请日：2011-03-16

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H03H7/01 ,  H01G4/002 ,  H01G7/00

CPC classification number: H03H7/46 ,  H01G4/00 ,  H01G4/02 ,  H01G7/00 ,  H03H7/0115 ,  H03H2001/0014 ,  H05K1/181 ,  Y10T29/417 ,  Y10T29/43

Abstract: A high power, low passive inter-modulation capacitor is presented, which is formed using metal clad substrates, which are broad-side coupled through a thin air gap. Each substrate may include metal layers affixed on both sides which are electrical coupled together to form a single capacitor plate, or each substrate may have only a single metal layer on the surface adjacent to the air gap. The capacitor has particular application in low cost RF and microwave filters, which may be used in communication equipment and communication test equipment such a diplexers, for low PIM applications.

Abstract translation: 提出了一种高功率，低无源互调电容器，其使用金属覆层基板形成，其通过薄的气隙广泛耦合。 每个基板可以包括固定在两侧的金属层，其电耦合在一起以形成单个电容器板，或者每个基板可以在邻近气隙的表面上仅具有单个金属层。 该电容器在低成本RF和微波滤波器中具有特殊应用，可用于通信设备和通信测试设备（如双工器），用于低PIM应用。

公开(公告)号：US06317013B1

公开(公告)日：2001-11-13

申请号：US09593501

申请日：2000-06-14

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H01P512

CPC classification number: H01P5/12 ,  H01P1/205 ,  H03F1/3229 ,  H03F2200/198

Abstract: A filter, for use with a delay compensating circuit in a delay line filter, formed from co-located capacitors. The capacitors may be formed as traces disposed on a circuit card and co-located to provide capacitive coupling to each other and ground. Proximity coupling wires are connected at one end to capacitive traces, and at the other end hang in mid-air above the next adjacent capacitive trace. The distance between each proximity coupling wire and the neighboring capacitive trace can be varied to control the capacitance coupling between neighboring capacitive traces. The filter is thus tuned by controlling the distances between the proximity coupling wires, and by squeezing or stretching the inductors. The shunt coils control the frequency of the filter, while the series of capacitive traces control the bandwidth.

Abstract translation: 用于与同位置电容器形成的延迟线滤波器中的延迟补偿电路一起使用的滤波器。 电容器可以形成为布置在电路卡上并且位于相互位置以提供彼此电容耦合并接地的迹线。 接近耦合线在一端连接到电容迹线，另一端连接在下一个相邻电容迹线上方的空中。 可以改变每个邻近耦合线和相邻电容迹线之间的距离，以控制相邻电容迹线之间的电容耦合。 因此，通过控制接近耦合线之间的距离以及通过挤压或拉伸电感来调节滤波器。 分流线圈控制滤波器的频率，而一系列电容迹线控制带宽。

公开(公告)号：US06236292B1

公开(公告)日：2001-05-22

申请号：US09343258

申请日：1999-06-30

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H01P120

CPC classification number: H01P1/2084

Abstract: A bandpass filter having three waveguide cavities probelessly coupled in a tri-section for producing an asymmetric response about a passband. In another aspect, the bandpass filter also includes first and second waveguide tri-sections coupled in series via a common waveguide cavity, providing a bandpass waveguide filter having transmission zeroes on only one side a filter passband.

Abstract translation: 具有三个波导腔的带通滤波器，其三维部分无意地耦合，用于产生关于通带的不对称响应。 在另一方面，带通滤波器还包括通过公共波导腔串联耦合的第一和第二波导三段，提供带通波导滤波器，其仅在一侧具有滤波器通带的传输零点。

公开(公告)号：US5936490A

公开(公告)日：1999-08-10

申请号：US902359

申请日：1997-07-29

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H01P1/208 ,  H01P7/10

CPC classification number: H01P1/2084

Abstract: A bandpass filter having three waveguide cavities probelessly coupled in a tri-section for producing an asymmetric response about a passband. In another aspect, the bandpass filter also includes first and second waveguide tri-sections coupled in series via a common waveguide cavity, providing a bandpass waveguide filter having transmission zeroes on only one side a filter passband.

Abstract translation: 具有三个波导腔的带通滤波器，其三维部分无意地耦合，用于产生关于通带的不对称响应。 在另一方面，带通滤波器还包括通过公共波导腔串联耦合的第一和第二波导三段，提供带通波导滤波器，其仅在一侧具有滤波器通带的传输零点。

公开(公告)号：US09136570B2

公开(公告)日：2015-09-15

申请号：US12329098

申请日：2008-12-05

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H01P1/202 ,  H01P5/107 ,  H01P7/04 ,  H01P1/208

CPC classification number: H01P1/208 ,  H01P5/107 ,  H01P7/04

Abstract: A cavity filter device includes a micro-strip structure comprising a low dielectric organic material forming a printed wiring board. The printed wiring board may be soldered, welded, or adhered to the base of one or more cavity filters. The cavity filter may include a coupling pin such as a RF pin positioned at the base of the filter. The micro-strip structure may be configured to carry a RF signal from the input, across the micro-strip structure to the RF pin positioned at the base of the filter.

Abstract translation: 空腔滤波器装置包括微带结构，其包括形成印刷线路板的低介电有机材料。 印刷线路板可以焊接，焊接或粘附到一个或多个空腔滤波器的基座。 空腔滤波器可以包括耦合销，例如位于滤波器底部的RF引脚。 微带结构可以被配置为将RF信号从输入端穿过微带结构传送到位于滤波器底部的RF引脚。

公开(公告)号：US08742869B2

公开(公告)日：2014-06-03

申请号：US13049343

申请日：2011-03-16

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H03H7/46 ,  H01G4/00 ,  H03H7/01

CPC classification number: H03H7/46 ,  H01G4/00 ,  H01G4/02 ,  H01G7/00 ,  H03H7/0115 ,  H03H2001/0014 ,  H05K1/181 ,  Y10T29/417 ,  Y10T29/43

Abstract: A high power, low passive inter-modulation capacitor is presented, which is formed using metal clad substrates, which are broad-side coupled through a thin air gap. Each substrate may include metal layers affixed on both sides which are electrical coupled together to form a single capacitor plate, or each substrate may have only a single metal layer on the surface adjacent to the air gap. The capacitor has particular application in low cost RF and microwave filters, which may be used in communication equipment and communication test equipment such a diplexers, for low PIM applications.

Abstract translation: 提出了一种高功率，低无源互调电容器，其使用金属覆层基板形成，其通过薄的气隙广泛耦合。 每个基板可以包括固定在两侧的金属层，其电耦合在一起以形成单个电容器板，或者每个基板可以在邻近气隙的表面上仅具有单个金属层。 该电容器在低成本RF和微波滤波器中具有特殊应用，可用于通信设备和通信测试设备（如双工器），用于低PIM应用。

公开(公告)号：US20090146763A1

公开(公告)日：2009-06-11

申请号：US12329098

申请日：2008-12-05

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H01P1/20

CPC classification number: H01P1/208 ,  H01P5/107 ,  H01P7/04

Abstract: A cavity filter device includes a micro-strip structure comprising a low dielectric organic material forming a printed wiring board. The printed wiring board may be soldered, welded, or adhered to the base of one or more cavity filters. The cavity filter may include a coupling pin such as a RF pin positioned at the base of the filter. The micro-strip structure may be configured to carry a RF signal from the input, across the micro-strip structure to the RF pin positioned at the base of the filter.

Abstract translation: 空腔滤波器装置包括微带结构，其包括形成印刷线路板的低介电有机材料。 印刷线路板可以焊接，焊接或粘附到一个或多个空腔滤波器的基座。 空腔滤波器可以包括耦合销，例如位于滤波器底部的RF引脚。 微带结构可以被配置为将RF信号从输入端穿过微带结构传送到位于滤波器底部的RF引脚。

公开(公告)号：US06664869B2

公开(公告)日：2003-12-16

申请号：US10112030

申请日：2002-04-01

Applicant: Rafi Hershtig

Inventor： Rafi Hershtig

IPC: H01P900

CPC classification number: H01P5/16 ,  H01P1/205 ,  H01P9/00 ,  H03F1/3229 ,  H03F2200/198

Abstract: A delay circuit for the secondary path of a feed-forward high power amplifier is disclosed. A first 3 dB quadrature hybrid coupler is coupled to first and second resonator circuits that are resonant at a first resonant frequency. The output of the first hybrid coupler is coupled to the input of a second 3 dB quadrature hybrid coupler. The second hybrid coupler is coupled to third and fourth resonator circuits that are resonant at a second resonant frequency that is greater than the first resonant frequency. The overall combined delay response of the first hybrid coupler and the second hybrid coupler appearing at the fourth node of the second hybrid coupler is substantially constant between the first resonant frequency and the second resonant frequency.