38results about "Delay lines" patented technology

A high-speed switching N-bit path selection type silicon-based integrated microwave photon delay line comprises a wavelength tunable external cavity laser, an electro-optical modulator, an N-bit wavelength selection delay line and a photoelectric detector, and the wavelength selection delay line is composed of N + 1 2 * 2 wavelength interleavers and N groups of delay and reference waveguide pairs. After being modulated by a microwave signal, light output by the external cavity laser is input into the N-bit wavelength selection delay line and finally converted into a microwave signal through the photoelectric detector to be output. By switching the wavelength of the laser, high-speed switching of a delay light path can be realized, and then high-speed phase shifting of a microwave signal is realized. According to the scheme, the wavelength selection type delay line adopts a passive device design, and compared with a traditional optical switch type delay line, the wavelength selection type delay line is easy to realize low loss, does not need voltage regulation and control, and is low in overall system power consumption.

An inductor for use as a passive electronic component. The inductor has a hollow ceramic tube, a metal target rod located inside the hollow ceramic tube, a coil wound on the outside of the hollow ceramic tube and including a first end and a second end, and a first terminal engaging the first end of the coil and a second terminal engaging the second end of the coil. The metal target rod is fixed relative to the coil at a position so that the inductor has a zero temperature coefficient. Also provided is an LC resonant circuit including the inductor.

A system for efficiently generating or originating a tailored electromagnetic (EM) wave having a lower velocity than the speed of electromagnetic waves in free space includes a coaxial waveguide which extends linearly and a sinewave current generator. The coaxial waveguide includes a tubular outer body and a tailored emitting antenna disposed coaxially within the tubular outer body. The tubular outer body is formed of a first conductive material and defines a space therein which may be maintained as vacuum. The tailored emitting antenna is constructed physically and electrically by at least three phase-shifted sub-antennas connected in series, each of the sub-antennas being formed of a second conductive material which is less conductive than the first conductive material. The sinewave current generator generates multiple phase-shifted sinewave currents which are respectively input to the sub-antennas.

The present invention relates to a phase shifter having low loss in broadband, and a wireless communication device comprising same. The wireless communication device according to one embodiment comprises: a wireless communication module; a first antenna; a first transmission line for allowing the transmission of a signal between the wireless communication module and the first antenna; and a phase shifting element arranged in series on the first transmission line, wherein the phase shifting element is stacked in the vertical direction and can include a plurality of resonant unit elements electrically connected in parallel to one another.

An example apparatus includes: a first metal layer including: a first delay line having a surface area; and a second metal layer including: a second delay line having a surface area overlapping the surface area of the first delay line; and an insulating layer coupled between the first metal layer and the second metal layer.

To provide a phase shifter having a compact configuration capable of realizing continuous phase shift change.SOLUTION: A phase shifter includes an input line, a variable phase-shift circuit connected to the input line and having a line-forming layer made of vanadium dioxide, and an output line connected to the variable phase-shift circuit. The variable phase-shift circuit includes a plurality of heating elements arranged in an array along one surface of the line-forming layer, and a heating drive circuit arranged corresponding to each of the plurality of heating elements. Each of the plurality of heating elements is thermally connected to the line-forming layer.SELECTED DRAWING: Figure 1

The application discloses a kind of transmission circuit of negative group delay SSPP suitable for X waveband and control method thereof, belong to microwave engineering technical field, the transmission circuit includes: SSPP transmission line and nested double-ring resonator being arranged in the same side of dielectric substrate;SSPP transmission line is used to provide the slow-wave dispersion characteristic of passband edge;Nested double-ring resonator is laterally coupled with SSPP transmission line, including outer ring resonator and inner ring resonator, for resonant coupling;First coupling gap is formed between the outer ring resonator and SSPP transmission line;The inner ring resonator is nested in the inside of outer ring resonator, and second coupling gap is formed between the inner ring resonator and outer ring resonator;Wherein, the size parameters of the outer ring resonator, inner ring resonator, first coupling gap and second coupling gap are set according to the generation requirement of X waveband negative group delay response and impedance matching requirement, can generate negative group delay effect in high frequency band while still maintaining good impedance matching.

A slow-wave structure, a traveling-wave tube, and a communication apparatus are provided. The slow-wave structure includes a tube housing, a slow-wave line, and a plurality of support portions. The slow-wave line and the plurality of support portions are all located inside the tube housing, and the tube housing, the slow-wave line, and the plurality of support portions are integrally connected. The plurality of support portions are sequentially spaced apart along the slow-wave line. One end of each support portion is connected to the tube housing, and the other end is connected to the slow-wave line. This application can address processing and assembly errors caused by a discrete design, and simplifies assembly, thereby shortening an overall production cycle of the traveling-wave tube, and improving yields and consistency of the traveling-wave tube.

A slow wave structure, a traveling wave tube and a communication device, the slow wave structure comprises a tube shell, a slow wave line and a plurality of support parts, the slow wave line and the plurality of support parts are located in the tube shell, and the tube shell, the slow wave line and the plurality of support parts are connected into a whole; the plurality of supporting parts are sequentially distributed at intervals along the slow wave line; one end of each supporting part is connected with the tube shell, and the other end is connected with the slow-wave line. According to the invention, processing and assembling errors caused by a split type design can be improved, and assembling is simplified, so that the overall production period of the traveling wave tube is shortened, and the yield and consistency of the traveling wave tube are improved.

The invention discloses a narrow-band large-delay delayer which comprises a microstrip line and a half-mode substrate integrated waveguide, the microstrip line and the half-mode substrate integrated waveguide are connected after impedance conversion, the half-mode substrate integrated waveguide forms an ENZ channel, and when the thickness of a substrate of the microstrip line is equal to that of a substrate of the substrate integrated waveguide, the ENZ channel is connected with the microstrip line. As the thickness of the substrate integrated waveguide is relatively thin, the width of the microstrip line is too thin, and at the moment, the substrate thickness of the microstrip line is set to be greater than the substrate thickness of the half-mode substrate integrated waveguide so as to increase the width of the microstrip line. The microstrip line and the half-mode substrate integrated waveguide are integrated, and when the substrate thickness of the microstrip line is larger than the substrate thickness of the half-mode substrate integrated waveguide, a metalized blind hole is formed. The narrow-band large-delay delayer is good in impedance matching, good in standing wave and insertion loss, small in area, large in delay amount, small in insertion loss, unlimited in working frequency, capable of working in millimeter waves or even higher frequency bands, high in integration level and capable of being interconnected with various passive and active devices.

The invention relates to the technical field of terahertz transmission, and discloses a high-phase-based flat grid zigzag waveguide design method, a waveguide and application, and the method comprises the steps: obtaining first dispersion characteristic data of a low-phase flat grid zigzag waveguide in a Brillouin diagram form, the first dispersion characteristic data comprises a first low-phase working dispersion curve and a first high-phase non-working dispersion curve; acquiring a working frequency range of terahertz waves of a set frequency band transmitted by the low-phase flat grid zigzag waveguide, wherein the working frequency range intersects with the first low-phase working dispersion curve; and adjusting the size of the low-phase flat grid zigzag waveguide to obtain a high-phase flat grid zigzag waveguide, so that the working frequency range is intersected with a high-phase working dispersion curve in a Brillouin diagram form of the high-phase flat grid zigzag waveguide. According to the invention, a fundamental mode high-phase region working strategy is adopted, and the high-frequency characteristic advantage of the flat grid zigzag waveguide is fully exerted while the structural size is obviously increased.

A slow-wave structure, a traveling-wave tube, and a communication apparatus are provided. The slow-wave structure includes a tube housing, a slow-wave line, and a plurality of support portions. The slow-wave line and the plurality of support portions are all located inside the tube housing, and the tube housing, the slow-wave line, and the plurality of support portions are integrally connected. The plurality of support portions are sequentially spaced apart along the slow-wave line. One end of each support portion is connected to the tube housing, and the other end is connected to the slow-wave line.

In one embodiment, an electromagnetic (EM) energy containment device includes a spherically symmetric resonant dielectric structure having a radial dimension R0 defined as R0=3 / π·λ0 / 2 and having first and second regions with different indices of refraction. The spherically symmetric resonant dielectric structure is configured to receive and to contain, for a selectable duration of time, an electromagnetic wave of a wavelength λ0, and can find applications in delay circuits for beam steering for example.

The invention relates to a tunable phase-shifting device (1) for a radio wave signal, comprising a first electrode structure (2) and a second electrode structure (5), each arranged on dielectric substrate layers (4, 6). The first electrode structure (2) and the second electrode structure (5) form a signal line for the radio wave signal extending in a signal transmission direction (8). A tuning layer (9) made of a tunable dielectric material (10) is arranged between the first electrode structure (2) and the second electrode structure. The first electrode structure (2) has several resonator strip elements (11), each with a strip element length measured in the signal transmission direction (8), which form a bandpass filter for the radio wave signal. The second electrode structure (5) is configured as a defective ground structure.The invention relates to a phased array antenna and a plate-shaped surface element with one or two phased array antennas.

An apparatus, including: a simulator configured to estimate signal propagation delays for a plurality of conductive trace structures, wherein the conductive trace structures include at least one tabbed routing structure; a compensator configured to determine trace-specific delay compensation values based on measured actual signal propagation delays obtained from PCB test coupons that include the tabbed routing structure and calculate compensated physical trace lengths using the trace-specific delay compensation values to achieve signal timing alignment; and a correlator configured to correlate estimated signal propagation delays with the measured actual signal propagation delays.

A slow-wave structure, a traveling-wave tube, and a communication apparatus are provided. The slow-wave structure includes a tube housing, a slow-wave line, and a plurality of support portions. The slow-wave line and the plurality of support portions are all located inside the tube housing, and the tube housing, the slow-wave line, and the plurality of support portions are integrally connected. The plurality of support portions are sequentially spaced apart along the slow-wave line. One end of each support portion is connected to the tube housing, and the other end is connected to the slow-wave line. This application can address processing and assembly errors caused by a discrete design, and simplifies assembly, thereby shortening an overall production cycle of the traveling-wave tube, and improving yields and consistency of the traveling-wave tube.

The present disclosure provides a device for signal delay. The device comprises: a frame of insulation material; multiple signal electrodes provided in the frame and electrically connected to each other in series; an input terminal electrically connected to a first of the multiple signal electrodes and configured to receive an input signal; and an output terminal electrically connected to a second of the multiple signal electrodes and configured to output an output signal that is delayed by the multiple signal electrodes with respect to the input signal, wherein at least one of the multiple signal electrodes is located at a different height than those of other signal electrodes with respect to a surface on which the device is to be mounted.

The invention discloses a negative group delay SSPP transmission circuit suitable for an X wave band and a control method thereof, and belongs to the technical field of microwave engineering. The transmission circuit comprises an SSPP transmission line and a nested double-ring resonator which are arranged on the same side of a dielectric substrate; the SSPP transmission line is used for providing a slow wave dispersion characteristic of a passband edge; the nested double-ring resonator is laterally coupled with the SSPP transmission line, comprises an outer ring resonator and an inner ring resonator, and is used for resonant coupling; a first coupling gap is formed between the outer ring resonator and the SSPP transmission line; the inner ring resonator is nested in the outer ring resonator, and a second coupling gap is formed between the inner ring resonator and the outer ring resonator; wherein the size parameters of the outer ring resonator, the inner ring resonator, the first coupling gap and the second coupling gap are set according to the generation requirement of the X-band negative group delay response and the impedance matching requirement, and good impedance matching can still be kept while the negative group delay effect is generated at the high frequency band.

An antenna array is electronically controlled by controlling the speed of transmission of RF signals in the feed lines of each radiator in the array. The speed of transmission is controlled using phase shifters that include a variable dielectric constant (VDC) material that causes the speed of transmission to vary. A control signal applied to the VDC material generates the required phase shift. The control signal is calculated in real time for each phase shifter for each control period to enable the main beam to track a target such as a satellite. The control signals are square wave signals and each control signal has a duty cycle or frequency that is specifically calculated to generate the required phase shift.

Phase delaying device configured to provide a frequency dependent phase delay within a frequency range, the phase delaying device comprising at least two consecutive inner conductors (102-104) and an outer conductor (105), the inner conductors being arranged to co-act with the outer conductor to form a transmission line. First and second inner conductors (102-103) are arranged with a longitudinal overlap between a connecting portion (102a) of the first inner conductor and a corresponding connecting portion (103a) of the second inner conductor to electrically couple the inner conductors. The connecting portions are spaced apart with separating material (103d) therebetween. The separating material selected from air, dielectric material, or a combination of air and dielectric material. The longitudinal overlap has a length of approximately λe / 4, where λe is a wavelength in said separating material at a frequency within said frequency range. A radio communication antenna and an antenna arrangement comprising such a phase delaying device are also provided.

The invention discloses a three-dimensional slow wave structure, an on-chip transmission line structure, an antenna structure and an antenna array, and relates to the technical field of signal transmission. The three-dimensional slow wave structure comprises a plurality of metal through holes and a plurality of metal layers which are parallel to one another. The uppermost metal layer serves as a back wire, the lowermost metal layer serves as a ground wire, and the other metal layers in the middle serve as filling metal layers. And grouping the filling metal layers, communicating the filling metal layers in each group through the metal through holes to form a plurality of groups of comb tooth units with the same shape, and periodically arranging the comb tooth units in a preset direction of a horizontal plane to form a comb tooth structure. In the vertical direction, the comb tooth structure is electrically connected with one of the back wire and the ground wire through the metal through holes to form a comb-shaped structure. The metal density in the comb-shaped structure is kept uniform, meanwhile, large equivalent capacitance is formed in the reserved gaps corresponding to the comb tooth units, interference at the back line is effectively reduced, and the comb-shaped structure has excellent mechanical properties and electromagnetic properties.

Provided are a phase-shifting unit, an antenna unit, a phased array unit, and a phased array. The phase-shifting unit includes a common port, a switch, and two connection ports. A transmission line between the two connection ports is provided with at least two branch ports. Positions of the at least two branch ports on the transmission line are different. The transmission line between every two adjacent branch ports includes a delay line. The switch is configured to switch to a target branch port and establish the connection between the target branch port and the common port so that the common port is connected to the two connection ports to form two paths. Each path is configured to establish the communication connection between the connection port corresponding to each path and the common port to transmit a signal.

This slow wave transmission line comprises a signal conductor (2) and a ground conductor (3) that are disposed with an insulator (1) therebetween. The ground conductor (3) includes a plurality of slits (3a) that intersect the extension direction of the signal conductor (2). The distance of a contour line OL from one end to the other end in an intersecting direction intersecting the extension direction of the signal conductor (2) of the slits (3a) in the ground conductor (3) in which the slits (3a) are formed is longer than the distance of a straight line connecting one end and the other end in the intersecting direction.

A high-speed switching N-bit path selection silicon-based integrated microwave photonic delay line includes a wavelength-tunable external cavity laser, an electro-optical modulator, an N-bit wavelength selective delay line, and a photodetector. The wavelength selective delay line consists of N+1 2×2 wavelength interleavers and N groups of delay and reference waveguide pairs. The output light of the external cavity laser is modulated by a microwave signal and input into the N-bit wavelength selective delay line. Finally, it is converted into a microwave signal output by a photodetector. By switching the laser wavelength, high-speed switching of the delay light path can be achieved, thereby achieving high-speed phase shifting of the microwave signal. In this solution, the wavelength selective delay line adopts a passive device design. Compared with traditional optical switching delay lines, it is easy to achieve low loss and does not require voltage regulation, and the overall system power consumption is low.

The invention relates to a method and apparatus to construct a waveguide for delay. An example apparatus includes: a first metal layer (520, 715, 910) including a first delay line (305, 615, 810) having a surface region; and a second metal layer (560, 725, 930) comprising a second delay line (320, 640, 820) having a surface region overlapping the surface region of the first delay line; and an insulating layer (540, 720, 920) coupled between the first metal layer and the second metal layer.

A transmission line. The transmission line includes a reference electrode. The transmission line also includes a stripline. The stripline meanders within a plane. The stripline has a nonplanar profile when viewed along a direction parallel to the plane.

In some examples, a variable inductor device includes a first planar loop comprising a first planar face and a material that supports electromagnetic coupling and a second planar loop comprising a second planar face and a material that supports electromagnetic coupling. The first planar loop is separable from the second planar loop to vary the inductance of the variable inductance device. In some examples, the first and second planar faces overlapping each other in a closed configuration of the device.

A high-frequency semiconductor device comprising a high-frequency semiconductor chip, including a high-frequency connector for transmitting or receiving high-frequency signals, and a chip package covering at least a portion of the high-frequency semiconductor chip. The chip package includes a high-frequency connector area for transmitting or receiving high-frequency signals located outside the high-frequency semiconductor device. The chip package includes a coplanar delay waveguide coupled between the high-frequency connector and the high-frequency connector area.

The application relates to a long-delay low-loss wideband delay line of a lack of ground open-circuit branch coupling strip, and belongs to the field of microwave systems. The long-delay low-loss wideband delay line comprises a metal microstrip line layer, a dielectric layer and a metal ground layer which are sequentially connected from top to bottom; the metal microstrip line layer comprises a fork structure composed of a U-shaped main microstrip line, a first U-shaped open-circuit branch and a second U-shaped open-circuit branch; a coupling strip is added in the fork structure, the coupling strip is grounded through a metallized via, and a complementary defect ground of the open-circuit branch is designed at a non-coplanar metal ground. Two or more long-delay low-loss wideband delay lines are connected in series to form a cascade delay line. The application works in a sub-6 frequency band range, has a relative bandwidth of 31.6%, a maximum delay time of 1.3 ns and an average transmission loss of 0.5 dB; a cascade delay line formed by connecting four long-delay low-loss wideband delay lines in series has a maximum delay time of 7.4 ns and an average transmission loss of less than 2.6 dB. The application effectively solves the mutual coupling eddy current effect between adjacent transmission lines.

The utility model provides a low-temperature co-fired ceramic delay line. The low-temperature co-fired ceramic delay line comprises a ceramic substrate, a time delay structure, an input electrode, an output electrode and a grounding electrode, the time delay structure is packaged in the ceramic substrate, the time delay structure comprises grounding layers and a time delay unit, the grounding layers are arranged on the upper side and the lower side of the time delay unit, a complete shielding environment is formed, external electromagnetic interference can be reduced, and time delay stability is improved. And the time delay unit is responsible for introducing required signal delay to ensure that the signal can be propagated in a low-loss manner according to a predetermined path. The input electrode and the output electrode are responsible for signal input and output respectively, one end of the input electrode is connected to the input end of the time delay unit, and the other end of the input electrode extends to the outer side of the ceramic substrate so as to be electrically connected with an external circuit conveniently. One end of the output electrode is connected to the output end of the time delay unit, and the other end extends out of the ceramic substrate. One end of the grounding electrode is connected to the grounding layer, and the other end extends out of the ceramic substrate so as to be electrically connected with an external circuit.