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公开(公告)号：US3911369A
公开(公告)日：1975-10-07
申请号：US50272774
申请日：1974-09-03
Applicant: BELL TELEPHONE LABOR INC
Inventor： SEIDEL HAROLD
CPC classification number: H03D7/165
Abstract: Undesirable higher order modulation components produced by a frequency converter are reduced by means of a second, weakly excited frequency converter. The latter, connected in parallel with the former, generates higher order terms which are injected into a common output wavepath out of time phase with the higher order terms produced by the principle frequency converter. By controlling the relative amplitudes of the local oscillator signals coupled to the two converters, the higher order components can be made to cancel whereas the desired linear signal components generated by the principle converter are substantially unaffected.
Abstract translation: 由频率转换器产生的不期望的较高阶调制分量通过第二弱励磁变频器而减小。 后者与前者并联连接，产生较高阶项，它们与主要变频器产生的较高阶项相比较，注入到与时间相位相差的公共输出波形路径中。 通过控制耦合到两个转换器的本地振荡器信号的相对振幅，可以使较高阶分量消除，而由原理转换器产生的期望线性信号分量基本上不受影响。
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公开(公告)号：US3906401A
公开(公告)日：1975-09-16
申请号：US50245374
申请日：1974-09-03
Applicant: BELL TELEPHONE LABOR INC
Inventor： SEIDEL HAROLD
CPC classification number: H03F1/0294 , H03C1/06 , H03C1/50 , H03F2200/198
Abstract: Modulation distortion due to phase modulation error in an interferometer type modulator is minimized by extracting a portion of the phase modulated carrier frequency signals in the two branches of the interferometer and sensing the resulting amplitude modulation in an auxiliary interferometer circuit. The modulation signal is compared with the input modulation signal and a weighted error signal is formed. The latter is then used to impress an error correcting phase modulation on the carrier frequency signals.
Abstract translation: 通过在干涉仪的两个分支中提取相位调制的载波频率信号的一部分并且在辅助干涉仪电路中感测所得到的幅度调制来最小化由干涉仪型调制器中的相位调制误差引起的调制失真。 将调制信号与输入调制信号进行比较，形成加权误差信号。 然后，后者用于对载波频率信号施加纠错相位调制。
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公开(公告)号：US3701950A
公开(公告)日：1972-10-31
申请号：US3701950D
申请日：1971-04-14
Applicant: BELL TELEPHONE LABOR INC
Inventor： SEIDEL HAROLD
CPC classification number: H03H19/00
Abstract: An extremely narrow-band filter, having a passband of less than one hertz in the megahertz range, comprises two parallel, signal processing wavepaths, each of which includes, in cascade, a downconverter, a low-frequency narrow-band filter, and an upconverter. A local oscillator signal, derived from a common local signal source, is coupled to each of the converters in such phase that the output signal from each converter in one wavepath is in time quadrature with the output signal from the corresponding converter in the other wavepath. An input power divider couples the input of each down-converter to a common input circuit. A hybrid coupler connects the outputs from the two up-converters to a common output circuit. In one embodiment, automatic frequency control is applied to the local oscillator along with means for controlling the bandwidth of the low-frequency filters. In another embodiment, the filter output signal is shifted in frequency and then used as the local oscillator.
Abstract translation: 在兆赫兹范围内具有小于1赫兹的通带的极窄带滤波器包括两个平行的信号处理波形路径，每个信号处理波形串联包括一个下变频器，一个低频窄带滤波器， 和升压转换器。 从公共本地信号源导出的本地振荡器信号以这样的相位耦合到每个转换器，使得来自一个波导路径中的每个转换器的输出信号与来自另一波形路径中的相应转换器的输出信号处于时间正交状态。 输入功率分配器将每个下变频器的输入端耦合到公共输入电路。 混合耦合器将两个上变频器的输出连接到公共输出电路。
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公开(公告)号：US3667065A
公开(公告)日：1972-05-30
申请号：US3667065D
申请日：1970-09-04
Applicant: BELL TELEPHONE LABOR INC
Inventor： BEURRIER HENRY RICHARD , SEIDEL HAROLD
CPC classification number: H03F1/3229 , H03H11/1217 , H04B3/06 , H04J1/12
Abstract: Frequency-shaping of the gain characteristic of a feed-forward, error-corrected amplifier using main and error amplifiers having essentially flat, or frequency-independent gain characteristics, is achieved by tapering the power division characteristics of: the input coupler, which extracts a reference signal component from the input signal; the sampling coupler, which compares the output from the main amplifier with the reference signal to form an error signal; and the error injection coupler, which injects the error signal into the main signal path. In a second embodiment of the invention, the band-shaping burden is shared between the amplifiers and the couplers.
Abstract translation: 通过使以下功率分配特性逐渐减小，使得使用具有基本上平坦或频率独立的增益特性的主和误差放大器的前馈误差校正放大器的增益特性的频率整形实现：输入耦合器，其提取 来自输入信号的参考信号分量; 采样耦合器，将主放大器的输出与参考信号进行比较，形成误差信号; 以及将误差信号注入主信号路径的误差注入耦合器。 在本发明的第二实施例中，频带整形负担在放大器和耦合器之间共享。
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公开(公告)号：US3637288A
公开(公告)日：1972-01-25
申请号：US3637288D
申请日：1970-02-05
Applicant: BELL TELEPHONE LABOR INC
Inventor： SEIDEL HAROLD
CPC classification number: G02F1/332
Abstract: An optical beam deflector is described in which a portion of the incident beam is deflected through a variable angle whose magnitude is determined by the direction of propagation of a substantially constant frequency acoustic beam.
Abstract translation: 描述了一种光束偏转器，其中入射光束的一部分通过可变角度偏转，其大小由基本上恒定的频率声束的传播方向确定。
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Patent Agency Ranking
公开(公告)号：US3586871A
公开(公告)日：1971-06-22
申请号：US3586871D
申请日：1969-05-23
Applicant: BELL TELEPHONE LABOR INC
Inventor： SEIDEL HAROLD
CPC classification number: H01P1/213 , Y10T307/735 , Y10T307/839
Abstract: The power derived from N identical power amplifiers are combined in any one of N different output ports by controlling the relative phases of the signals propagating along N different transmission lines energized, respectively, by the N amplifiers. In particular, the N output ports are longitudinally distributed along said lines, and are coupled thereto through networks that are responsive to a different mode of excitation, where each mode is a different arrangement of input signal phases. It is an advantage of such a system that all the switching is done in the amplfiiers'' relatively low-power input circuits rather than in the high-power output circuits.
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公开(公告)号：US3541467A
公开(公告)日：1970-11-17
申请号：US3541467D
申请日：1969-04-25
Applicant: BELL TELEPHONE LABOR INC
Inventor： SEIDEL HAROLD
CPC classification number: H03F1/50 , H03F1/26 , H03F1/3223 , H03F2200/198 , H03F2200/372 , H04B3/06
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公开(公告)号：US3914554A
公开(公告)日：1975-10-21
申请号：US36156973
申请日：1973-05-18
Applicant: BELL TELEPHONE LABOR INC
Inventor： SEIDEL HAROLD
Abstract: This application discloses an arrangement for transmitting, over an existing communication facility, a signal whose spectrum only partially overlaps the passband of the facility. This is accomplished by a technique called ''''spectrum folding'''' wherein the input signal spectrum is divided into two subbands, one of which includes the out-of-band frequency components, and the other of which includes only those frequency components that fall within the system passband. The former subband is then frequencyshifted to a portion of the passband not occupied by the in-band subband, following which the two subbands are multiplexed for transmission along a common wavepath. At the receiver, the subbands are again separated, and the frequency-shifted subband translated back to its original position in the spectrum. The subbands are then combined to reproduce the original input signal.
Abstract translation: 本申请公开了一种用于在现有通信设施上传输其频谱仅部分地与设施的通带重叠的信号的装置。 这通过称为“频谱折叠”的技术来实现，其中输入信号频谱被分成两个子带，其中一个包括带外频率分量，另一个包括落在系统内的那些频率分量 通带。 然后，先前的子带被频移到未被带内子带占用的通带的一部分，随后两个子带被复用以沿着公共波路传输。 在接收机处，子带再次被分离，并且频移子带被转换回其在频谱中的原始位置。 然后将子带组合以再现原始输入信号。
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公开(公告)号：US3612780A
公开(公告)日：1971-10-12
申请号：US3612780D
申请日：1969-10-08
Applicant: BELL TELEPHONE LABOR INC
Inventor： BEURRIER HENRY R , SEIDEL HAROLD
Abstract: This application describes an active four-port having directional transmission properties. The four-port comprises two active members whose respective emitting, control and collecting electrodes are connected by means of separate networks characterized in that the symmetric mode transfer gain and the antisymmetric mode transfer gain, as measured between the control and collecting electrodes, are equal.
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公开(公告)号：US3588727A
公开(公告)日：1971-06-28
申请号：US3588727D
申请日：1968-12-13
Applicant: BELL TELEPHONE LABOR INC
Inventor： SEIDEL HAROLD
CPC classification number: H03D9/06 , H03F7/04 , H03F2200/198
Abstract: THIS APPLICATION DESCRIBES THE MANNER IN WHICH A FREQUENCY CONVERTER CAN BE USED AS A BRIDGE BETWEEN DIFFERENT FREQUENCY DOMAINS. IN PARTICULAR, A FREQUENCY CONVERTER IS USED TO IMAGE LOW FREQUENCY CIRCUIT COMPONENTS AT A HIGHER FREQUENCY, THEREBY PRODUCING CIRCUIT RESPONSES AT THE HIGHER FREQUENCY THAT COULD NOT ORDINARILY BE PRODUCED DIRECTLY. FOR EXAMPLE, A RELATIVELY MODERATE Q RESONANT CIRCUIT IS IMAGED AT A HIGHER FREQUENCY WITH A Q THAT IS INCREASED BY THE FREQUENCY TRANSFORMATION RATIO. A NEGATIVE RESISTANCE DIODE IS IMAGED AT A HIGHER FREQUENCY THEREBY PRODUCING AMPLIFICATION AT A FREQUENCY AT WHICH SUCH A DIODE COULD NOT NORMALLY OPERATE.
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