-
公开(公告)号：US4539681A
公开(公告)日：1985-09-03
申请号：US469870
申请日：1983-02-25
摘要： A modulator system for converting a three-channel input microwave signal to a single-channel output microwave signal is formed of two microwave sections which are joined together at both their inputs and their outputs by hybrid circuits, one of which serves as a power divider and the other which serves as a power combiner. Each of the microwave sections includes a pair of couplers which are joined by a Faraday rotator. First and second microwave input signals are applied to a first port of an input coupler in each of these sections. A third microwave signal is connected by the hybrid divider to a second input port in the input couplers of each of the microwave sections. Polarization of the third signal is vertical and is maintained through the two sections. Polarization of the first and second signals is horizontal and is maintained through the two sections. With activation of the rotator, a shift in polarization occurs resulting in appearance of the signals in both the horizontal and vertical components of an output coupler in each of the sections. The vertical component of the output couplers in each of the sections is combined by the hybrid combiner to produce the single-channel microwave signal. Synchronous detectors are utilized for subsequent extraction of the first and second input signals, the synchronous detectors and the Faraday rotators being driven by common sources of modulation signals wherein the rotator in one section in modulated at a rate different from the rotator in the second section.
摘要翻译： 用于将三通道输入微波信号转换为单通道输出微波信号的调制器系统由两个微波部分组成，两个微波部分通过混合电路在其输入端和它们的输出端连接在一起，其中一个用作功率分配器， 另一个用作功率组合器。 每个微波部分包括由法拉第旋转器连接的一对耦合器。 第一和第二微波输入信号被施加到这些部分中的每一个中的输入耦合器的第一端口。 第三微波信号通过混合分频器连接到每个微波部分的输入耦合器中的第二输入端口。 第三个信号的极化是垂直的，并且通过两个部分维持。 第一和第二信号的极化是水平的并且通过两个部分来维持。 通过旋转器的激活，偏振发生变化，导致在每个部分中输出耦合器的水平和垂直分量中的信号出现。 每个部分的输出耦合器的垂直分量由混合组合器组合以产生单通道微波信号。 同步检测器用于随后提取第一和第二输入信号，同步检测器和法拉第旋转器由公共调制信号源驱动，其中一个部分中的旋转体以与第二部分中的旋转体不同的速率被调制。
-
公开(公告)号：US4831334A
公开(公告)日：1989-05-16
申请号：US59709
申请日：1987-06-08
CPC分类号： H03F1/0244 , H03F3/2178
摘要： A high efficiency envelope amplifier is disclosed. The invention includes a power supply, a comparator and several switches. The power supply is capable of providing multiple outputs. The comparator measures the amplitude of an input signal against one of several threshold levels. When the input signal is within a predetermined range, a selected power supply output is switched incrementally switches small amounts of power, switching losses are substantially mitigated.
摘要翻译： 公开了一种高效率包络放大器。 本发明包括电源，比较器和多个开关。 电源能够提供多个输出。 比较器针对几个阈值电平之一测量输入信号的幅度。 当输入信号在预定范围内时，选择的电源输出逐渐切换切换少量的功率，从而显着地减轻了开关损耗。
-
3.发明授权
公开(公告)号：US5770909A
公开(公告)日：1998-06-23
申请号：US764589
申请日：1996-12-13
CPC分类号： H02K11/042 , H02K19/12 , H02K19/26 , H02P25/024 , H02P9/38 , H02P2101/30
摘要： A field control system for a wound rotor synchronous motor-generator used in electrically powered automobiles is capable of optimizing the performance of the motor-generator for all driving conditions. Using a rotary transformer to transmit power across the rotational boundary, it has no wearing parts and is silent. Preferably, the field control system has common elements with the controller which generates the stator currents of the synchronous motor-generator.
摘要翻译： 用于电动汽车的绕组转子同步电动发电机的现场控制系统能够在所有驾驶条件下优化电动发电机的性能。 使用旋转变压器在整个旋转边界传输动力，没有易损件并且无声。 优选地，现场控制系统具有与产生同步电动发电机的定子电流的控制器的公共元件。
-
公开(公告)号：US4117426A
公开(公告)日：1978-09-26
申请号：US755701
申请日：1976-12-30
申请人： Thomas Hudspeth , Harold A. Rosen
发明人： Thomas Hudspeth , Harold A. Rosen
摘要： A multiple channel microwave rotary joint is disclosed which is a toroidal cavity having first and second halves each with a bearing surface for rotation about the axis of the toroid. A plurality of input ports are mounted about the external cylindrical surface of the first half for generating a plurality of modes within the toroidal cavity. A first hybrid network is coupled to the inut ports for providing the proper phase input signals for generating the various modes. A second hybrid network is connected to a plurality of output probes mounted to the second half of the toroidal cavity. The rotary joint has a passageway which is axially aligned for allowing a plurality of multichannel rotary joints to be "stacked" and the interconnecting microwave cables or waveguides to pass through the passageways.
-
公开(公告)号：US4890118A
公开(公告)日：1989-12-26
申请号：US289881
申请日：1988-12-27
申请人： Thomas Hudspeth , Fritz Steinberg
发明人： Thomas Hudspeth , Fritz Steinberg
CPC分类号： H01Q13/0241
摘要： A feed horn employing a novel compensator design which substantially reduces off-axis cross polarized components of circularly polarized energy over a wide range of angular directions. The compensator comprises a plurality of L-shaped compensating conductors disposed in a generally symmetrical fashion about a longitudinal axis of the feed horn. The conductors extend inwardly from the output aperture of the feed horn and then radially outwards a predetermined distance away from the axis toward the horn sidewall. The conductors are disposed at an angle relative to the axis, which angle is generally defined by an cone whose apex is the same as the apex of the feed horn. A nonconducting support structure supports the conductors within the feed horn. A dielectric matching member is disposed in the feed horn to eliminate unwanted energy reflections.
-
公开(公告)号：US4968957A
公开(公告)日：1990-11-06
申请号：US359242
申请日：1989-05-31
申请人： Thomas Hudspeth , Fritz Steinberg
发明人： Thomas Hudspeth , Fritz Steinberg
摘要： A diplexer for processing polarized energy at separate transmit and receive frequencies. The nature of the polarization may be circular, linear or elliptical depending upon the phasing associated therewith. The diplexer comprises a waveguide having first and second ports disposed at opposite ends thereof. A symmetrical bandpass resonator arrangement is disposed around the periphery of the waveguide and couples energy at the receive frequency out of the waveguide. A symmetrical bandstop resonator arrangement is also disposed around the periphery of the waveguide and filters energy at the receive frequency to prevent coupling of received energy to the second port. The bandpass resonators of each of the resonator arrangements generally include tuning members that control the amount of energy coupled from the waveguide and that adjust and balance the polarization components of the energy to maintain the polarization state thereof. A plurality of tuning rings may be diposed adjacent to the first port that compensate for the impedance mismatch caused by external components coupled to the waveguide. A tuning ring may also be provided at the second port that compensates for impedance mismatch caused by the resonator arrangements. The diplexer is generally an overmoded structure that permits the propagation of higher order modes in the received energy. The symmetry provided in the bandpass resonator arrangement inhibits or prevents the excitation of these higher order modes and hence received energy not coupled out of the diplexer through the second port. Similarly, the symmetrical nature of the bandstop resonator arrangement also inhibits scattering of higher order modes and hence improves the performance of the diplexer.
-
公开(公告)号：US5471177A
公开(公告)日：1995-11-28
申请号：US286034
申请日：1994-07-29
申请人： Thomas Hudspeth , Fritz Steinberg
发明人： Thomas Hudspeth , Fritz Steinberg
IPC分类号： H01P1/213
CPC分类号： H01P1/2138
摘要： A diplexer (14) has a first rectangular waveguide (38) extending from a front port (16) to a back wall (70), the back wall having a rectangular opening (72) therein constituting a section of a second rectangular waveguide (20) and serving as a back port (18) of the diplexer. A first spectral region of electromagnetic power communicates between the front port and a side port (28), and a second spectral region of electromagnetic power communicates between the front port and the back port. A center frequency of the second spectral region is greater than a center frequency of the first spectral region by a factor greater than or equal approximately to two. The side port includes an aperture (126) disposed in a sidewall (42) of the first waveguide, a third waveguide (32), and a coupling element (128) extending from the third waveguide through the aperture into the first waveguide for coupling electromagnetic power at the first spectral region between the first and the third waveguides. Coupled resonators (112, 124) disposed within the third waveguide provide a bandpass filter characteristic at the first spectral region, and inhibit propagation of electromagnetic power at the second spectral region between the first and the second waveguides. Within the inner conductor are two spaced apart cylindrical elements (100, 112) constituting plates of a capacitor (102).
摘要翻译： 双工器（14）具有从前端口（16）延伸到后壁（70）的第一矩形波导（38），后壁具有矩形开口（72），其构成第二矩形波导（20 ）并且用作双工器的后端口（18）。 电磁功率的第一光谱区域在前端口和侧端口（28）之间连通，电磁功率的第二光谱区域在前端口和后端口之间连通。 第二光谱区域的中心频率大于第一光谱区域的中心频率大于或等于大约二倍的因子。 侧端口包括设置在第一波导的侧壁（42）中的孔（126），第三波导（32）和从第三波导穿过孔延伸到第一波导中的耦合元件（128），用于耦合电磁 在第一和第三波导之间的第一光谱区域处的功率。 设置在第三波导内的耦合谐振器（112,124）在第一光谱区域提供带通滤波器特性，并且抑制在第一和第二波导之间的第二光谱区域处的电磁功率的传播。 在内部导体内是构成电容器（102）的板的两个间隔开的圆柱形元件（100,112）。
-
8.发明授权
公开(公告)号：US4783639A
公开(公告)日：1988-11-08
申请号：US800241
申请日：1985-11-21
申请人： Thomas Hudspeth , Fritz Steinberg
发明人： Thomas Hudspeth , Fritz Steinberg
CPC分类号： H01P1/2138
摘要： A wideband microwave diplexer is provided which includes a waveguide section characterized by a longitudinal dimension, and defining first and second longitudinally spaced ports, for propagating microwave power substantially within a first lower frequency band between said first port and said second port; coupling resonator means for coupling microwave power substantially within a second higher frequency band between said waveguide section and a coaxial transmission line; and band stop filter means for substantially preventing microwave power substantially within the second frequency band from propagating to said second port.
摘要翻译： 提供一种宽带微波双工器，其包括波导部分，其特征在于纵向尺寸，并且限定第一和第二纵向间隔的端口，用于基本上在所述第一端口和所述第二端口之间的第一较低频带内传播微波功率; 耦合谐振器装置，用于将微波功率基本上在所述波导部分和同轴传输线之间的第二较高频带内耦合; 以及带阻滤波器装置，用于基本上防止基本上在第二频带内的微波功率传播到所述第二端口。
-
公开(公告)号：US4119931A
公开(公告)日：1978-10-10
申请号：US702795
申请日：1976-07-06
申请人： Thomas Hudspeth , Harmon H. Keeling
发明人： Thomas Hudspeth , Harmon H. Keeling
摘要： A TEM-mode transmission line switch coupling essentially all input power at a first port to a fourth port when in its uncoupled position and coupling a predetermined significant fraction of the input power to a second port with the remainder coupled to the fourth port when in its coupled position, the switch including a relatively wide spaced parallel transmission line section with a rotatable conductive vane disposed between the parallel lines to allow coupling of power between the lines in the coupled position and inhibit such coupling in the uncoupled position.
摘要翻译： TEM模式传输线路开关在处于其非耦合位置时基本上将第一端口处的所有输入功率耦合到第四端口，并且将预定的大部分输入功率耦合到第二端口，其余耦合到第四端口 该开关包括相对较宽的间隔开的并行传输线段，其中可转动的导电叶片设置在平行线之间，以允许在联接位置的线之间耦合功率并且阻止在非耦合位置的这种耦合。
-
公开(公告)号：US4539534A
公开(公告)日：1985-09-03
申请号：US468826
申请日：1983-02-23
IPC分类号： H01P5/18
CPC分类号： H01P5/183
摘要： A hybrid coupler is of the type known as a transverse electromagnetic mode, coupled transmission line coupler. The hybrid coupler is formed within a plate of metal by milling out channels of square cross-sections therein. The walls of the channels serve as outer conductors of coaxial lines, there being inner conductors of square cross-section positioned within the channel. A diagonally disposed window crosses the intersection of the ports and includes a separator. The central conductors of the respective coaxial lines are joined by diagonally disposed segments of inner conductor such that each pair of coaxial lines is so joined. Each pair of lines provides a pair of ports. The line segments are spaced apart by a spring-loaded separator for rigidly maintaining a coupling distance.
摘要翻译： 混合耦合器是称为横向电磁模式的类型，耦合传输线耦合器。 混合耦合器通过在其中铣削正方形横截面的通道而形成在金属板内。 通道的壁用作同轴线的外导体，存在位于通道内的正方形横截面的内导体。 对角布置的窗口穿过端口的交叉点并且包括隔板。 各个同轴线的中心导体通过内部导体的对角设置的段连接，使得每对同轴线如此连接。 每对线路提供一对端口。 线段由弹簧加载的分离器间隔开，用于刚性地保持联接距离。
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.021 秒)
