公开(公告)号：US5528204A

公开(公告)日：1996-06-18

申请号：US235581

申请日：1994-04-29

Applicant: Truc Hoang ,  Reddy R. Vangala

Inventor： Truc Hoang ,  Reddy R. Vangala

IPC: H01P1/213 ,  H01P1/205

CPC classification number: H01P1/2136

Abstract: A method of tuning a duplex filter (500). First, the center frequency of at least one filter of a duplex filter (10) is measured (502). Next, the difference between the measured center frequency and a desired center frequency is determined (504). And, third the duplex filter is tuned (506) by selectively removing a substantially planar layer of dielectric material for a top surface (14) of the filter (10), whereby the frequency characteristics are modified.

Abstract translation: 一种调整双工滤波器（500）的方法。 首先，测量双相滤波器（10）的至少一个滤波器的中心频率（502）。 接下来，确定测量的中心频率与期望中心频率之间的差异（504）。 并且，通过选择性地去除滤波器（10）的顶表面（14）的基本上平坦的电介质材料层，来调谐（506）第二双工滤波器，从而修改频率特性。

公开(公告)号：US06559735B1

公开(公告)日：2003-05-06

申请号：US09702420

申请日：2000-10-31

Applicant: Truc Hoang ,  Reddy Vangala

Inventor： Truc Hoang ,  Reddy Vangala

IPC: H01P1213

CPC classification number: H01P1/2136

Abstract: The present invention is a preferred monoblock ceramic bandpass duplexer filter. The preferred filter has at least three I/O pads. One of the pads is coupled to an antenna, another is connected to a transmission circuit and the last pad is connected to a receive circuit. The filter is comprised of two sections: a transmission section and a receive section. The transmission and receive sections include resonators disposed on respective sides of the antenna pad. A first alternative signal path is disposed adjacent the ends of the transmission resonators. A second alternative signal path is disposed adjacent to the ends of the receive resonators. Each alternative signal path couples adjacent and non-adjacent resonators. A further feature of the filter of the present invention includes a shunt zero resonator for the transmission section. To the contrary, the present invention allows the elimination of a shunt zero resonator for the receive section of the filter.

Abstract translation: 本发明是一种优选的单块陶瓷带通双工器滤波器。 优选的滤波器具有至少三个I / O焊盘。 一个焊盘耦合到天线，另一个连接到传输电路，最后一个焊盘连接到接收电路。 滤波器由两部分组成：传输部分和接收部分。 传输和接收部分包括设置在天线焊盘的相应侧上的谐振器。 第一替代信号路径邻近传输谐振器的端部设置。 第二替代信号路径被布置成与接收谐振器的端部相邻。 每个替代信号路径耦合相邻和不相邻的谐振器。 本发明的滤波器的另一特征包括用于传输部分的分流零谐振器。 相反，本发明允许消除用于滤波器的接收部分的分流零谐振器。

公开(公告)号：US5512866A

公开(公告)日：1996-04-30

申请号：US235588

申请日：1994-04-29

Applicant: Reddy R. Vangala ,  Truc Hoang

Inventor： Reddy R. Vangala ,  Truc Hoang

IPC: H01G2/06 ,  H01G4/40 ,  H01P1/205 ,  H01P1/213 ,  H03H9/46 ,  H03H9/70 ,  H01P1/201

CPC classification number: H01P1/2136

Abstract: A ceramic duplex filter is provided. The duplex filter (10) has a filter body (12) of a dielectric material, and has a top (14), bottom (16) and side surfaces (18, 20, 22, and 24) with through-holes extending from the top (14) to the bottom surface (16). Receptacles are positioned adjacent to the top surface (14) with a conductive material therein. The surfaces (16, 18, 20, 22 and 24) are substantially covered with a conductive material defining a metallized layer (25), with the exception that the top surface (14) is substantially unmetallized. The receptacles include a conductive layer of material to define a certain capacitance. And, coupling devices (94, 96 and 98) for coupling signals into and out of the duplex filter (10) are provided. Shunt, series and coupling capacitors are strategically positioned adjacent to the top surface (14), which help to facilitate tuning of the filter.

Abstract translation: 提供陶瓷双工滤波器。 双相滤波器（10）具有电介质材料的过滤体（12），并具有顶部（14），底部（16）和侧表面（18,20,22和24），其中通孔从 顶部（14）到底部表面（16）。 插座被定位成与顶表面（14）相邻，导电材料在其中。 除了顶表面（14）基本上未金属化之外，表面（16,18,20,22和24）基本上被限定金属化层（25）的导电材料覆盖。 插座包括用于限定一定电容的材料的导电层。 并且，提供用于将信号耦合到和从双向滤波器（10）输出的耦合装置（94,96和98）。 分流器，串联和耦合电容器在顶部表面（14）附近有策略地定位，这有助于过滤器的调谐。

公开(公告)号：US5952900A

公开(公告)日：1999-09-14

申请号：US982545

申请日：1997-12-02

Applicant: Truc Hoang ,  Reddy Vangala ,  Antonije Djordjevic

Inventor： Truc Hoang ,  Reddy Vangala ,  Antonije Djordjevic

IPC: H01P1/205 ,  H01P5/12

CPC classification number: H01P1/2056

Abstract: A ceramic transverse-electromagnetic-mode filter having a resistive paste base and resistive paste layer and method of tuning same is provided. The ceramic filter includes a filter body (200) comprising a block of dielectric material and having top (202), bottom (204) and four side surfaces (206, 208, 210, 212) including vertical edges (214). The filter also has metallized through-holes providing transverse-electromagnetic-mode resonators (210). At least one vertical portion in proximity to the vertical edges (214) of the block on at least one of the side surfaces is unmetallized providing a resistive paste base (218). A resistive paste layer (219) of predetermined resistivity is deposited thereon. The resistive paste layer attenuates a set of parasitic spurious responses in the filter frequency response curve while simultaneously maintaining a desired transverse-electromagnetic-mode passband.

Abstract translation: 提供了具有电阻浆料基底和电阻膏层的陶瓷横向电磁模式滤波器及其调谐方法。 陶瓷过滤器包括过滤体（200），该过滤器主体（200）包括电介质材料块，并具有包括垂直边缘（214）的顶部（202），底部（204）和四个侧表面（206,208,210,212）。 滤波器还具有提供横向电磁模式谐振器（210）的金属化通孔。 靠近至少一个侧表面上的块的垂直边缘（214）的至少一个垂直部分是未金属化的，提供电阻浆料基底（218）。 在其上沉积预定电阻率的电阻浆料层（219）。 电阻浆料层在滤波器频率响应曲线中衰减一组寄生寄生响应，同时保持期望的横向电磁模式通带。

公开(公告)号：US5850168A

公开(公告)日：1998-12-15

申请号：US844126

申请日：1997-04-18

Applicant: Thomas McVeety ,  Truc Hoang ,  Antonije Djordjevic

Inventor： Thomas McVeety ,  Truc Hoang ,  Antonije Djordjevic

IPC: H01P1/205 ,  H01P5/12

CPC classification number: H01P1/2056

Abstract: A ceramic transverse-electromagnetic-mode filter having a waveguide cavity mode frequency shifting void and method of tuning same is provided. The ceramic filter includes a filter body (200) comprising a block of dielectric material and having top (202), bottom (204) and four side surfaces (206, 208, 210, 212) including vertical edges (214). The filter also has metallized through-holes providing transverse-electromagnetic-mode resonators (216). At least one vertical portion in proximity to the vertical edges (214) of the block on at least one of the side surfaces is unmetallized providing a waveguide cavity mode frequency shifting void (218). The waveguide cavity mode frequency shifting void (218) shifts a set of parasitic spurious responses in the filter frequency response curve to a lower frequency while simultaneously maintaining a desired transverse-electromagnetic-mode passband.

Abstract translation: 提供了具有波导腔模变频空隙的陶瓷横向电磁模式滤波器及其调谐方法。 陶瓷过滤器包括过滤体（200），该过滤器主体（200）包括电介质材料块，并具有包括垂直边缘（214）的顶部（202），底部（204）和四个侧表面（206,208,210,212）。 滤波器还具有提供横向电磁模式谐振器（216）的金属化通孔。 在至少一个侧表面上的块的垂直边缘（214）附近的至少一个垂直部分未金属化，提供波导腔模式频移空隙（218）。 波导腔模式频移空隙（218）将滤波器频率响应曲线中的一组寄生寄生响应移位到较低频率，同时保持期望的横向电磁模式通带。