43 results about "Hybrid coupler" patented technology

Wireless communication circuitry may include active phase shifter circuitry. The active phase shifter circuitry may include a quadrature hybrid coupler and amplifiers coupled to the outputs of the quadrature hybrid coupler. An additional quadrature hybrid coupler may be coupled to the amplifiers.

An antenna assembly includes a patch antenna, a metal layer, and a feed-in signal layer. The metal layer is disposed on a side of the patch antenna and includes a first slot and a second slot. The feed-in signal layer is disposed on a side of the metal layer opposite the second antenna and includes a transmitting port, a receiving port, a hybrid coupler, and two microstrips. The transmitting port and the receiving port are connected to the hybrid coupler, and the two microstrips are extended in the direction away from the hybrid coupler. Projections of two ends of the two microstrips onto the metal layer are overlapped with the first slot and the second slot. An antenna array is also mentioned.

The technology described herein is directed towards a wide-bandwidth, high-frequency (e.g., millimeter wave) hybrid coupler. One implementation of the hybrid coupler is passive and compact, is designed with a single top metallization layer, and does not require any interconnecting layer. The planar design can include four ports coupled to the four sides of a rectangular (e.g., square) metal plane portion, with cross-shaped slots that intersect in the center of the metal plane portion, and two back-to-back connected slanted bracket slots for efficiently routing E- and H-fields to other ports. Design tweaks can change the radio frequency (RF) characteristics of the hybrid coupler, including, for example, scaling the hybrid coupler dimensions to establish the center frequency, while retaining constant bandwidth. Other tweaks can be made to the dimensions of the cross-shaped slots. The design facilitates integration with other planar RF technologies.

A transmit / receive switch for magnetic resonance imaging (MRI) of a 1H atomic nucleus at 3T (tesla) and 7T magnetic field strengths includes a first and second dielectric substrate and a first and a second microstripline hybrid coupler formed on the first and second dielectric substrates respectively. A first port and a second port are connected to a first junction and a second junction respectively of the first microstripline hybrid coupler, a third port and a fourth port are connected to a third junction and a fourth junction of the second microstripline hybrid coupler respectively. Each port is connected by a matching network embodied by a microstripline wire to a pair of parallel resonant circuits. The transmit / receive switch is configured to operate at a fundamental frequency of about 127.8 MHz at 3T and at a third harmonic frequency of about 298 MHz at 7T.

One example includes a superconducting readout system. The system includes an RF hybrid coupler configured to receive an RF input signal and to generate at least one RF tuning signal and an RF output signal based on the RF input signal. The system also includes at least one tunable resonator system comprising a tunable resonator configured to receive the respective RF tuning signal(s). Each of the tunable resonator(s) can have a resonant frequency that is set by a superconducting input signal, such that the RF tuning signal(s) is reflected back to the RF hybrid coupler to provide a variable phase-shift of the RF output signal relative to the RF input signal that is based on the superconducting input signal. The system further includes a phase monitor configured to measure a phase difference between the RF input signal and the RF output signal to determine the superconducting input signal.

The invention relates to the field of electromagnetic radiation and antenna arrays, in particular to an electromagnetic radiation array applied to emergency rescue, which comprises a Butler matrix of a substrate integrated waveguide, and is characterized in that the Butler matrix is formed by cascading a plurality of hybrid couplers, fixed phase shifters and cross couplers; and the input port and the output port of the Butler matrix are interconnected through a non-crossed waveguide transmission line. According to the invention, based on the optimized substrate integrated waveguide Butler matrix, the insertion loss and crosstalk of the feed network are significantly reduced through port rearrangement and non-cross wiring, and the core problems of weak anti-interference capability, short communication distance and limited network capacity in a traditional emergency communication system are effectively solved. The method is suitable for reliable communication and detection tasks of an unmanned aerial vehicle or a ground mobile platform in a complex rescue environment.

A measurement system is provided. Said measurement system comprises a first measurement chain, a second measurement chain, a radio frequency hybrid coupler, a first radio frequency port connected to the first measurement chain via the radio frequency hybrid coupler, a second radio frequency port connected to the second measurement chain via the radio frequency hybrid coupler, a first attenuator or a first radio frequency switch for the first radio frequency port, and a second attenuator or a second radio frequency switch for the second radio frequency port. In this context, a first transmission coefficient of the first attenuator or the first radio frequency switch is controllable. In addition to this, a second transmission coefficient of the second attenuator or the second radio frequency switch is controllable.

The invention relates to a base station antenna. The base station antenna comprises an antenna housing; the X antenna arrays are configured to be annularly distributed along the inner wall of the antenna housing, and X is larger than or equal to 2; and a feed network configured to have N radio frequency (RF) ports and X feed ports connected to the X antenna arrays, and N < = X. Wherein the feed network comprises a plurality of power dividers and at least one 90-degree hybrid coupler connected to the N RF ports. Wherein the phase difference among the X antenna arrays is set by arranging the connection relationship between the X antenna arrays and the feed network, so as to realize the quasi-omnidirectional antenna pattern.

A base station antenna comprises: a radome; X antenna arrays configured to be distributed annularly along the inner wall of the radome, wherein X ≥ 2; a feed network configured to have N RF ports and X feed ports connected to the X antenna arrays, with N ≤ X. The feed network comprises one or more 90-degree hybrid couplers that are connected to the N RF ports. The phase difference between the X antenna arrays is set by arranging the connection relationship between the X antenna arrays and the feed network to achieve quasi-omnidirectional antenna patterns.

Wireless circuitry can be provided with a first amplifier and a hybrid coupler having a first port configured to receive a vertically polarized signal from an antenna, a second port configured to receive a horizontally polarized signal the antenna, and a third port coupled to an input of the first amplifier. The wireless circuitry can further include a second amplifier having an input coupled to a fourth port of the hybrid coupler, wherein the hybrid coupler comprises a quadrature hybrid coupler. The wireless circuitry can further include first circuits coupled to an output of the first amplifier and configured to produce first and second baseband signals, second circuits coupled to an output of the second amplifier and configured to produce third and fourth baseband signals, and processing circuitry configured to selectively combine the first and third baseband signals and selectively combine the second and fourth baseband signals.

This application provides a power amplification system comprising a hybrid coupler, a first amplifier, a second amplifier, a first impedance conversion line, and a second impedance conversion line. An output port of the first amplifier is coupled to the hybrid coupler via the first impedance conversion line. An output port of the second amplifier is coupled to the hybrid coupler via the second impedance conversion line. The first amplifier and the second amplifier are configured to output radio frequency signals. The hybrid coupler is configured to: perform impedance conversion with the first impedance conversion line and / or the second impedance conversion line; and output a combined radio frequency signal from a fourth port of the hybrid coupler. The combined radio frequency signal is obtained by combining the plurality of radio frequency signals.

The application discloses a six-port single-ended differential switching quadrature hybrid coupler, which is used for realizing mutual conversion of single-ended signals and quadrature differential signals and mutual conversion of differential signals and quadrature single-ended signals as a single device; when used for mutual conversion of single-ended signals and quadrature differential signals, a first port is a single-ended input port, a sixth port is a single-ended isolation port, a second port and a third port are I-path differential output ports, and a fourth port and a fifth port are Q-path differential output ports; when used for mutual conversion of differential signals and quadrature single-ended signals, the second port and the third port are differential input ports, the first port and the sixth port are I-path and Q-path outputs respectively, and the fourth port and the fifth port are differential isolation ports. Compared with a traditional quadrature hybrid coupler, the application reduces circuit area and cost, preferably adopts an on-chip transformer and a capacitor to form a lumped circuit, has a good common-mode rejection ratio, and is suitable for applications such as a Doherty power amplifier and a vector modulation phase shifter.

The application provides an optical full-connection device and a communication device, and relates to the technical field of communication. The optical full-connection device comprises a hybrid coupler and a first type of delay unit. The hybrid coupler comprises a first type of coupler, a second type of delay unit and a second type of coupler. The number of input ports of the first type of coupler is less than or equal to the number of output ports of the first type of coupler. The number of input ports of the second type of coupler is the same as the number of output ports of the second type of coupler. In the application, the number of input ports of the second type of coupler in the hybrid coupler is equal to the number of output ports of the second type of coupler. There is no light signal combination in the hybrid coupler, so there is no loss. The optical full-connection device constructed by using the hybrid coupler and the first delay unit can reduce cascade loss, and is more suitable for the demand of large-scale antennas in the HBF architecture.

The utility model discloses an unmanned aerial vehicle high-precision positioning module based on a printed quadrifilar helix antenna, relates to the technical field of satellite navigation and unmanned aerial vehicle positioning, and aims to provide an unmanned aerial vehicle positioning module with high positioning precision. According to the module, the multi-frequency four-arm helical antenna, the multi-stage radio frequency signal processing circuit and the redundant power supply system are integrated, so that the positioning precision and the anti-interference capability are remarkably improved. The antenna specifically comprises a double-frequency four-arm helical antenna adopting a gold-plated copper radiator, and a broadband impedance matching network constructed by combining a hybrid coupler; the low-noise signal processing link consists of an amplifier, a two-stage filter and a post-stage amplifier; the method is based on a high-precision satellite positioning calculation unit. The module realizes rapid integration through a multi-pin plug-in, has centimeter-level positioning precision, multipath interference resistance and power-off emergency cruising ability, and is suitable for accurate navigation and position return of an unmanned aerial vehicle in a complex electromagnetic environment.

A magnetic resonance imaging (MRI) apparatus that includes a multi-resonance transmit / receive (T / R) switch, one switch design having a top side and a bottom side of a microstripline based hybrid coupler, a first pin diode, a second pin diode, four vertical transmission lines and six horizontal transmission lines arranged in a bended manner on the microstripline. The top side is associated with a first port and a second port, and electrically connected to the first pin diode and the second pin diode. The bottom side is associated with a third port and a fourth port, and electrically connected with the first pin diode and the second pin diode. The switch receives radio frequency (RF) pulses of different frequencies transmitted to and received from an MRI RF coil where the different frequencies are received concurrently and without tuning by the multi-resonance T / R switch from the MRI RF coil.

In a composite filter, first to third filters are connected to any ports of a first hybrid including a 90° hybrid coupler. The first filter has a first passband. The second filter and the third filter have a second passband that does not overlap the first passband. An electrical section from the first filter to the first hybrid is referred to as a first part. A combination of an electrical section from the second filter to the first hybrid and an electrical section from the third filter to the first hybrid is referred to as a second part. At least one of the first part or the second part does not include a matching network containing an inductor including a conductor of a multilayer substrate.

A power amplifier based on output matching network fusion comprises a quadrature hybrid coupler, an input equalizer, a self-adaptive bias circuit, a common source driver, an interstage transformer, a stacked power amplifier and an output matching network which are connected in sequence, a second-order C-L-C structure is adopted as output matching, the power amplifier can be applied to a 5G millimeter wave Doherty power amplifier, and the output matching network can be applied to the 5G millimeter wave Doherty power amplifier. The Doherty power amplifier has the advantages of being large in bandwidth and compact in integration, and the problems that in the 5G millimeter wave communication scene, the Doherty power amplifier matching network bandwidth is limited, and the chip occupied area is too large can be solved.

The present application relates to the technical field of communications, and provides an optical domain full-connection apparatus and a communication apparatus. The optical domain full-connection apparatus comprises a hybrid coupler and a first-type delay unit. The hybrid coupler comprises a first-type coupler, a second-type delay unit, and a second-type coupler. The number of input ports of the first-type coupler is less than or equal to the number of output ports of the first-type coupler. The number of input ports of the second-type coupler is the same as the number of output ports of the second-type coupler. In the present application, in the hybrid coupler, the number of input ports of the second-type coupler is equal to the number of output ports of the second-type coupler, there is no optical signal combining in the hybrid coupler. Therefore, there is no loss. The optical domain full-connection apparatus constructed using the hybrid coupler and the first delay unit can reduce cascading loss, and is more suitable for the requirements of large-scale antennas in an HBF architecture.

An antenna module includes antenna groups, hybrid couplers, dividers, and an RFIC. The antenna group includes radiating elements. The antenna group includes radiating elements. Each hybrid coupler has input terminals and output terminals. The RFIC supplies a high frequency signal to each radiating element. Each divider splits the high frequency signal from the RFIC in two directions. The divider splits a first signal from the RFIC to the input terminal of each hybrid coupler. The divider splits a second signal from the RFIC to the input terminal of each hybrid coupler. The output terminals of the hybrid coupler are respectively connected to the radiating elements. The output terminals of the hybrid coupler are respectively connected to the radiating elements. In each hybrid coupler, a phase difference between the high frequency signals supplied to the input terminals is set to 90°.

An apparatus including a body and a wireless communication system. The wireless communication system is integrated within or coupled to the body. The wireless communication system includes a wireless communication circuit and a hybrid coupler. The wireless communication circuit is configured to transmit or receive wireless signals. The hybrid coupler includes: a single ended port coupled to the wireless communication circuit; a first port coupled to a first connection; a second differential port coupled to second connection; inductive elements; and capacitors located between the inductive elements.

A four-port RF hybrid coupler includes a substrate having first and second primary traces and first and second coupled traces on a first surface thereof. The first coupled trace has: (i) a first end configured to provide a first degree of RF coupling to a first end of the first primary trace when the RF hybrid coupler is active, and (ii) a second end configured to provide a third degree of RF coupling to a second end of the second primary trace when the RF hybrid coupler is active. The second coupled trace has: (i) a first end configured to provide a fourth degree of RF coupling to the first end of the second primary trace when the RF hybrid coupler is active, and (ii) a second end configured to provide a second degree of RF coupling to the second end of the first primary trace when the RF hybrid coupler is active. First and second energy cancellation circuits are also provided. The first energy cancellation circuit includes a first termination coupler having an input port electrically coupled to an end of the second coupled trace, and the second energy cancellation circuit includes a second termination coupler having an input port electrically coupled to an end of the first coupled trace.

An antenna array feed network includes two or more antenna elements, a 180° hybrid coupler, one or more combiners, two or more transceiver systems including a secondary transceiver system with a transceiver, a diplexer, and amplifier with each remaining transceiver system including a transceiver, a diplexer, a directional coupler, a RF switch, a preamplifier, a network circulator, a programmable attenuator, and an amplifier. The two or more antenna elements form an antenna array. The 180° hybrid coupler provides amplitude controlled null steering and two separate RF signals for an individual port of the antenna array. The programmable attenuator provides automated null steering algorithms for the antenna array feed network. The analog phase shifter equalizes magnitudes of a phase of the two more antenna elements. The one or more combiners feed two or more transceiver systems into the 180° hybrid coupler or the antenna elements into the 180° hybrid coupler.

Disclosed in the present application is a millimetre wave up-down conversion module, comprising an intermediate-frequency transceiving change-over switch and a radio frequency transceiving change-over switch, wherein there are two links, i.e., an up-conversion link and a down-conversion link, between the two switches, the up-conversion link sequentially comprises an intermediate-frequency amplifier, a hybrid coupler and a quadrature up-converter, and the down-conversion link comprises a down-converter. Additionally, a local oscillator circuit provides a local oscillator signal to the quadrature up-converter and the down-converter. Additionally, a radio frequency Balun transformer II is connected to the radio frequency transceiving change-over switch. The millimetre wave up-down conversion module has two operating modes, i.e., a transmitting mode and a receiving mode, wherein in the transmitting mode, a signal travels through the up-conversion link, and in the receiving mode, the signal travels through the down-conversion link. In the present application, the up-down conversion module has excellent image rejection ratio, low local oscillator leakage, excellent broadband matching, small area and low design complexity.

The invention discloses an ultra-wideband 3-dB orthogonal hybrid coupler based on lumped elements, and belongs to the technical field of microwave integrated circuits. The coupler comprises an input port P1, two output ports P2 and P3, an isolation port P4, four basic coupler units LC Baluns and an LC four-port coupling network. Through the combination of an unbalanced-balanced LC balun structure and an LC four-port coupling network, an orthogonal hybrid coupling function with 3-dB power distribution and 90-degree phase difference is realized in an ultra-wideband frequency range. Compared with a traditional orthogonal coupling structure, the broadband orthogonal coupling structure has the advantages that design parameters are few, the structure is compact, excellent amplitude balance, port isolation and phase consistency are shown in a broadband, and the broadband orthogonal coupling structure is suitable for a broadband radio frequency front-end system with high performance and high integration level.

This invention discloses a miniaturized balanced-single-ended 180° hybrid coupler, belonging to the field of radio frequency and microwave technology. It includes: a stacked dielectric substrate, and a differential-end balanced feed unit, a symmetrical short-circuit stepped impedance ring, a center-loaded short-circuit stub, a sum-end balanced feed group, a first single-port, and a second single-port, all disposed within the dielectric substrate. The differential-end balanced feed unit and the symmetrical short-circuit stepped impedance ring are connected by a short circuit at one half to form two sets of wide-side coupled striplines, creating an anti-phase coupled transmission path. The sum-end balanced feed group and the center-loaded short-circuit stub at the symmetrical midpoint of the symmetrical short-circuit stepped impedance ring form a three-wire coupling, creating an in-phase coupled transmission path. The first and second single-ports are connected to two impedance transformation nodes of the symmetrical short-circuit stepped impedance ring for input / output of equal-amplitude in-phase or equal-amplitude out-of-phase single-ended signals. This invention integrates balanced-single-ended conversion, broadband filtering, high common-mode rejection, and compact packaging into a single unit.

A filter device includes a multilayer substrate, a chip mounted on the multilayer substrate, a first filter at least partially included in the chip, and a first hybrid coupler connected to the first filter. A part of the first hybrid coupler is included in the multilayer substrate, and another part of the first hybrid coupler is included in the chip.

The device (20) for wireless communication includes a first antenna (12), a second antenna (22), and a hybrid coupler (11), wherein the hybrid coupler (11) is used to connect the first antenna (12) and the second antenna (22) to opposite transmission paths (TX), thereby potentially doubling the TX coverage area in space. The first antenna (12) is connected to a first port (2) of the hybrid coupler (11), and the second antenna (22) is connected to a second port (3) of the hybrid coupler (11). The first antenna (12) and the second antenna (22) are isolated from each other and arranged in a back-to-back configuration.

The invention relates to a wireless circuit with a hybrid coupler. A wireless circuit may be provided with a first amplifier and a hybrid coupler having a first port configured to receive a vertically polarized signal from an antenna, a second port configured to receive a horizontally polarized signal from the antenna, and a third port coupled to an input of the first amplifier. The wireless circuitry may also include a second amplifier having an input coupled to a fourth port of the hybrid coupler, where the hybrid coupler includes a quadrature hybrid coupler. The wireless circuitry may also include a first circuit coupled to an output of the first amplifier and configured to generate a first baseband signal and a second baseband signal; a second circuit coupled to an output of the second amplifier and configured to generate a third baseband signal and a fourth baseband signal; and a processing circuit configured to selectively combine the first baseband signal and the third baseband signal and selectively combine the second baseband signal and the fourth baseband signal.

An amplifier circuit arrangement for amplifying at least one input signal to an output signal for delivery to a load. The amplifier circuit arrangement includes at least one four-port hybrid coupler, a main amplifier having an input terminal for receiving a first input signal and coupled to a first port of the hybrid coupler, an auxiliary amplifier having an input terminal for receiving a second input signal and coupled to the second port of the hybrid coupler, a negative resistance amplifier circuit coupled to the third port of the hybrid coupler. The negative resistance amplifier circuit receives a signal from the hybrid coupler via the third port and returns an amplified signal back to the third port of the hybrid coupler. At least one of the auxiliary amplifier and negative resistance amplifier circuit selectively operates in combination with the main amplifier circuit.

Microwave detection unit (205) which features: a non-destructive quantum microwave photon detector (100); a quadrature microwave hybrid coupler (210) connected to the non-destructive quantum microwave photon detector; a dispersive nonlinear element connected to the quadrature microwave hybrid coupler; and a measuring unit (255) configured to detect a microwave photon by measuring a non-zero voltage across the dispersive nonlinear element.