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1.发明授权Hybrid t-junction constructed in waveguide having a cut-off frequency above the operating frequency 失效在具有高于运行频率的切断频率的波形中构造的混合T形结构
公开(公告)号：US3657668A
公开(公告)日：1972-04-18
申请号：US3657668D
申请日：1970-05-25
Applicant: INT STANDARD ELECTRIC CORP
Inventor： CRAVEN GEORGE FREDERICK , THOMAS RAYMOND RICHARD
Abstract: A hybrid T-junction constructed in waveguide for operation below its cut-off frequency. The series arm of the hybrid provides a parallel resonant circuit in series with the symmetrical arms of the hybrid. The shunt arm provides a series resonant circuit at the midpoint of the series arm. The equivalent circuit is a lumped circuit bridged-T, which exhibits the properties of balance and isolation associated with bridge networks.
Abstract translation: 在波导中构造的混合T形结线，用于低于其截止频率。 混合动力的串联臂提供与混合动力的对称臂串联的并联谐振电路。 分流臂在串联臂的中点提供串联谐振电路。 等效电路是集成电路桥接器T，其具有与桥接网络相关联的平衡和隔离的特性。
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公开(公告)号：US3859600A
公开(公告)日：1975-01-07
申请号：US40948773
申请日：1973-10-25
Applicant: INT STANDARD ELECTRIC CORP
CPC classification number: H03D9/0616
Abstract: There is disclosed an evanescent mode waveguide mixer. A first length of evanescent mode waveguide is provided having one end coupled to a signal source and the other end coupled to a local oscillator. A resonant slot, either a longitudinal or a transverse resonant slot, is provided intermediate the two ends of the first length of waveguide so that the first length of waveguide between the resonant slot and the signal source constitutes an evanescent mode filter for coupling the signal of the signal source to the resonant slot and so that the first length of waveguide between the resonant slot and the local oscillator constitutes an evanescent mode filter for coupling the signal of the local oscillator to the resonant slot. A second length of waveguide is disposed at right angles to the first length of waveguide and disposed to receive energy through the resonant slot. A mixer diode is disposed in the second length of waveguide closely adjacent the resonant slot. The second length of waveguide is dimensioned to be evanescent at the mixer generated frequency and propagating at the mixer generated sum frequency. Reactance components are provided in the second length of waveguide beyond the mixer diode to provide independent adjustment to terminate the image and sum frequencies.
Abstract translation: 公开了一种ev逝模式波导混频器。 提供第一长度的消逝模式波导，其一端耦合到信号源，另一端耦合到本地振荡器。 谐振槽（纵向或横向谐振槽）设置在第一长度波导的两端之间的中间，使得谐振槽和信号源之间的波导的第一长度构成消逝模式滤波器，用于将 信号源到谐振槽，并且使得谐振槽和本地振荡器之间的波导的第一长度构成湮灭模式滤波器，用于将本地振荡器的信号耦合到谐振槽。 波导的第二长度设置成与波导的第一长度成直角并且设置成通过谐振槽接收能量。 混频器二极管设置在紧邻谐振槽的波导的第二长度中。 波导的第二长度的尺寸设定为在混频器产生的频率处消逝，并在混频器产生的和频率下传播。 在波导的第二长度超过混频二极管提供电抗分量以提供独立调整以终止图像和和频率。
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公开(公告)号：US3621483A
公开(公告)日：1971-11-16
申请号：US3621483D
申请日：1967-06-02
Applicant: INT STANDARD ELECTRIC CORP
Inventor： CRAVEN GEORGE FREDERICK
Abstract: Waveguide band-pass filters operated such that only evanescent H waves exist at the operating frequency of the system are terminated in a capacitive reactance which at the center frequency of the desired pass band is the conjugate of the positive imaginary characteristic impedance of the length of evanescent waveguide. The capacitive termination is the only obstacle required in the guide.
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公开(公告)号：US3601719A
公开(公告)日：1971-08-24
申请号：US3601719D
申请日：1969-10-09
Applicant: INT STANDARD ELECTRIC CORP
CPC classification number: H01P1/219
Abstract: An evanescent H-mode rectangular waveguide resonator having a tuning screw mounted on one broad wall is temperature compensated by having said screw physically penetrate close to the opposite broad wall of said waveguide. Said penetration provides significant end-loading capacitance. In one preferred embodiment, said screw is offset from the longitudinal centerline of said waveguide to achieve both the required tuning capacitance and the required penetration. In another preferred embodiment, to further improve temperature compensation, a silver-plated Swedish iron screw having a lower coefficient of expansion than the material of the waveguide, (i.e., copper) penetrates close to the opposite broad wall.
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Patent Agency Ranking5.发明授权Waveguide filter utilizing evanescent waveguide, with tunable ferrite loading 失效波导过滤器使用永久性波导，带有可变载荷
公开(公告)号：US3639862A
公开(公告)日：1972-02-01
申请号：US3639862D
申请日：1967-11-09
Applicant: INT STANDARD ELECTRIC CORP
Inventor： CRAVEN GEORGE FREDERICK , SKEDD RICHARD FINNIE , STORTFORD BISHOP S
CPC classification number: H01P1/219
Abstract: A waveguide filter wherein transversely magnetized ferriteloading strips are mounted within a waveguide section to produce cutoff at a higher frequency than in an empty waveguide, thereby providing evanescent-mode operation at the operating frequencies. The waveguide section is then terminated in a capacitive reactance which at the center frequency of the desired passband is the conjugate of the positive imaginary characteristic impedance of the length of evanescent waveguide. Means for varying the magnetic field applied to the ferrite-loading strips is provided for tuning the filter over a predetermined range of passband frequencies.
Abstract translation: 一种波导滤波器，其中横向磁化铁素体加载带安装在波导部分内以产生比在空波导中更高的频率的截止，从而在工作频率处提供渐逝模式操作。 波导部分然后以电容性电抗端接，在电容电抗中，期望通带的中心频率为ev逝波导长度的正虚特征阻抗的共轭。 用于改变施加到铁氧体加载条的磁场的装置被提供用于在预定范围的通带频率上调谐滤波器。
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公开(公告)号：US3611213A
公开(公告)日：1971-10-05
申请号：US3611213D
申请日：1969-12-19
Applicant: INT STANDARD ELECTRIC CORP
Inventor： CRAVEN GEORGE FREDERICK , SKEDD RICHARD FINNIE
CPC classification number: H01P1/219
Abstract: A microwave filter of the type wherein an H-plane bifurcation provides a first and second channel within a length of rectangular waveguide for the separate propagation of incident energy. In a preferred embodiment, the width of said first channel is reduced and two screws are inserted therein to convert said first channel into a 180* phase shift evanescent filter. Said evanescent filter is coupled to the rectangular waveguide by inserting in said waveguide a screw at each longitudinal end of said bifurcation. The combined outputs of said first and second channel cancel, thereby providing a rejection filter. In a modification of said preferred embodiment, a ferrite is positioned along the sidewalls of said evanescent filter and is subjected to a magnetic field. The strength of said magnetic field controls the phase shift of said evanescent filter and consequently the amount of cancellation achieved, and enables use as a switch.
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公开(公告)号：US3634788A
公开(公告)日：1972-01-11
申请号：US3634788D
申请日：1967-09-27
Applicant: INT STANDARD ELECTRIC CORP
Inventor： CRAVEN GEORGE FREDERICK
CPC classification number: H01P1/219
Abstract: This invention relates to waveguide filters wherein waveguide sections functioning in the evanescent mode for frequencies in the desired passband are utilized to couple conventional cavity filter sections together. The evanescent sections operate in their normal modes at frequencies higher than the passband frequencies. Suppression devices are then coupled to one or more of the evanescent sections (instead of to the cavity filter sections) to suppress the parasitic harmonic waves while having negligible effect on the evanescent mode passband frequencies.
Abstract translation: 波导滤波器本发明涉及波导滤波器，其中波导部分以对于期望通带中的频率的消逝模式起作用，用于将常规空腔滤波器部分耦合在一起。 消逝部分在高于通带频率的频率下以其正常模式工作。 然后将抑制装置耦合到一个或多个ev逝部分（而不是到腔滤波器部分），以抑制寄生谐波，同时对ev逝模式通带频率具有可忽略的影响。
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公开(公告)号：US3500387A
公开(公告)日：1970-03-10
申请号：US3500387D
申请日：1964-12-07
Applicant: INT STANDARD ELECTRIC CORP
Inventor： CRAVEN GEORGE FREDERICK , KARBOWIAK ANTONI EMIL
CPC classification number: H03M1/00 , H03M1/1009
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公开(公告)号：US3422364A
公开(公告)日：1969-01-14
申请号：US3422364D
申请日：1965-05-06
Applicant: INT STANDARD ELECTRIC CORP
Inventor： CRAVEN GEORGE FREDERICK , HEEKS JOHN STUART , WOODE ALAN DAVID
CPC classification number: H03K7/08 , H03K3/33 , H04B14/026
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