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1. 发明授权

US3445790A Ferrite waveguide device having magnetic return path within the waveguide 失效
标题翻译：在波形中具有磁性返回路径的铁氧体波导装置
公开(公告)号：US3445790A
公开(公告)日：1969-05-20
申请号：US3445790D
申请日：1966-07-15
申请人： E & M LAB
发明人： SCHNEIDER CYRIL B
IPC分类号： H01P1/19 , H03H5/06 , H03H7/38
CPC分类号： H01P1/19

2. 发明授权

US3593217A Subminiature tunable circuits in modular form and method for making same 失效
标题翻译：模块化形式的辅助电路及其制造方法
公开(公告)号：US3593217A
公开(公告)日：1971-07-13
申请号：US3593217D
申请日：1967-10-27
申请人： TEXAS INSTRUMENTS INC
发明人： WEBER ROGER L
IPC分类号： H01F17/04 , H01F21/02 , H01F27/02 , H03H1/00 , H03H3/00 , H01J15/02 , H03H5/06
CPC分类号： H01F21/02 , H01F17/045 , H01F27/027 , H03H1/00
摘要： Disclosed is a subminiature tunable circuit in modular form and the method of making the modular circuit. A capacitor is mounted on an inductor to form a modular tunable circuit. By appropriate connections, either series or parallel reactive circuits are formed with intermediate tap connections, when desired. The circuit is tuned by changing the value of the capacitor by air abrasion techniques.

3. 发明授权

US3555464A Compact lcr component and method of making 失效
标题翻译： COMPACT LCR组件及其制作方法
公开(公告)号：US3555464A
公开(公告)日：1971-01-12
申请号：US3555464D
申请日：1969-08-07
申请人： TDK ELECTRONICS CO LTD
发明人： MAEDA TSUTOMU , WATANABE KIYOSHI , AKINO TADAHARU , OSADA HISASHI
IPC分类号： H03H5/02 , H03H5/06
CPC分类号： H03H5/02
摘要： AN ELECTRIC COMPOSITE COMPONENT COMPRISING A DIELECTRIC BASE PLATE HAVING A CUT-OFF PART AT AN EDGE AD AT LEAST A PAIR OF PROJECCTIONS AT THE OTHER EDGE, AN INDUCTANCE ELEMENT OF ADRUM-SHAPED MAGNETIC CORE WITH A COIL IN ITS INTERMEDIATE GROOVE AND MOUNTED TO THE PLATE AT THE CUT-OFF SO AS TO RECEIVE PLATE EDGES IN THE GROOVE, AND A CONDENSER ELEMENT OF ELECTRODE PLATES RESPECTIVELY ON EACH SURFACE OF THE PLATE BETWEEN THE CUT-OFF AND PROJECTIONS. EACH OF LEAD WIRES OF THE COIL IS LED OVER EACH CONDENSER ELECTRODE ON EACH PLATE SURFACE TO EACH OF THE PROJECTIONS AND WOUND UP THERETO. A METHOD OF PRODUCING THE COMPONENT INCLUDES STEPS OF APPLYING A SOLDER LAYER TO THE LEAD WIRES WHERE CONTACTING ELE CTRODES AFTER REMOVING INSULATION COATING, PREHEATING ELEMENTS, AND DIPPING THE WHOLE IN A MELTED SOLDER BATH SO AS TO SIMULTANEOUSLY SOLDER THE CONTACTING POINTS OF LEAD WIRES AND ELECTRODES.

4. 发明授权

US3500259A Filter circuits using alternate openand short-circuited 3 db quadrature hybrids 失效
标题翻译：使用替代OPENAND短路电路的滤波电路3 DB QUADRATURE HYBRIDS
公开(公告)号：US3500259A
公开(公告)日：1970-03-10
申请号：US3500259D
申请日：1967-09-29
申请人： BELL TELEPHONE LABOR INC
发明人： SEIDEL HAROLD
IPC分类号： H01P1/209 , H01P5/16 , H03H5/06 , H03H7/10
CPC分类号： H01P5/16 , H01P1/209

5. 发明授权

US3944755A Composite filter circuit 失效
标题翻译：复合滤波电路
公开(公告)号：US3944755A
公开(公告)日：1976-03-16
申请号：US550376
申请日：1975-02-18
申请人： Nobuaki Takahashi , Masao Kasuga , Yasuo Itoh
发明人： Nobuaki Takahashi , Masao Kasuga , Yasuo Itoh
IPC分类号： G11B3/00 , H03H7/01 , H03H7/46 , H04S3/00 , G11B3/74 , H03H5/06
CPC分类号： H03H7/06 , H03H7/1766 , H03H7/463 , H04S3/006 , H03H7/075
摘要： A composite filter circuit comprises a first series resonant circuit connected to a single common resistor, resonating at a first frequency, and exhibiting a low-pass filtering characteristic. A parallel resonant circuit includes one circuit element of the first series resonant circuit and resonates at a second frequency. A second series resonant circuit is connected to the single common resistor, resonating at the second frequency, and exhibiting a highpass filtering characteristic. The first series resonant circuit and the parallel resonant circuit constitute a low-pass filter circuit section. This low-pass filtering characteristic results from the total effects of the low-pass filtering characteristic of the first series resonant circuit, a dip characteristic of the parallel resonant circuit, and, in addition, a decreasing characteristic at the second frequency, due to the second series resonant circuit. The second series resonant circuit constitutes a high-pass or band-pass filter circuit section having a high-pass filtering characteristic resulting from the total effect of the high-pass filtering characteristic of the second series resonant circuit and, in addition, the decreasing characteristic at the first frequency due to the first series resonant circuit.
摘要翻译：复合滤波器电路包括连接到单个公共电阻器的第一串联谐振电路，以第一频率谐振并呈现低通滤波特性。并联谐振电路包括第一串联谐振电路的一个电路元件并以第二频率谐振。第二串联谐振电路连接到单个公共电阻器，在第二频率处谐振并呈现高通滤波特性。第一串联谐振电路和并联谐振电路构成低通滤波电路部分。该低通滤波特性是由于第一串联谐振电路的低通滤波特性，并联谐振电路的下降特性以及第二频率的降低特性的总效应，由于第二串联谐振电路。第二串联谐振电路构成由第二串联谐振电路的高通滤波特性的总效应导致的具有高通滤波特性的高通或带通滤波器电路部分，此外，降低特性由于第一串联谐振电路在第一频率。

6. 发明授权

US3568109A Variable or low pass filter 失效
标题翻译：可变或低通滤波器
公开(公告)号：US3568109A
公开(公告)日：1971-03-02
申请号：US3568109D
申请日：1968-05-02
申请人： ALLEN BRADLEY CO
发明人： NEUENS RICHARD F
IPC分类号： H03H1/00 , H03H5/06
CPC分类号： H03H1/0007
摘要： A low pass filter for insertion between two circuits, such as a power supply and a load circuit, that blocks the passage from one circuit to the other of radio frequencies above a given pass band, and which continues to function as a satisfactory filter under the condition of reactive components in the power supply and load circuits being close to resonant values with reactive elements in the filter. The filter comprises a pi network having a series line extending between the network input and output ends that includes an inductive circuit element, and shunt lines branching from the series line that include capacitive elements with resistance to establish resistance-capacitance elements that introduce circuit losses which reduce the Q of the shunt lines to inhibit resonances that might otherwise impair the filtering function of the device.

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