12 results about "Transceiver design" patented technology

The technology described herein is directed towards a transceiver with beam scanning capability based on leaky wave antenna technology, which facilitates a compact transceiver design. The leaky wave antenna can be incorporated into a substrate integrated waveguide design, and can include different respective groups of slot pairs having different respective periodicities, corresponding to different respective beam steering directions. The transceiver can thus steer signals to a wearable or portable device that includes a passive metasurface while mitigating null regions; the transceiver transmits a wireless radio frequency signal towards the metasurface integrated into the wearable device, whereby the metasurface reflects an (e.g., metasurface-altered) instance of the incoming signal back to the transceiver. The receipt of the reflected signal can, for example, facilitate proximity detection of the user. The slot pairs can be asymmetrical reflection-canceling slot pairs, to achieve broadside radiation while avoiding band-stop effects.

The application discloses a kind of for speed fuzzy target robust detection under clutter background transceiver design method, comprising the following steps: S1, intra-pulse inter-pulse parameter agile waveform component analysis;S2, intra-pulse inter-pulse waveform dependent airborne radar echo modeling;S3, the modeling of speed fuzzy target robust detection problem based on cognitive information;S4, transmission and Doppler filter bank robust joint design problem solution.The application proposes a kind of for speed fuzzy target robust detection under clutter background transceiver joint design method, based on block enhancement, principal component minimization and sequence convex approximation etc. Non-convex optimization method, efficient configuration intra-pulse inter-pulse waveform amplitude, phase and timing etc. Parameters and Doppler filter bank coefficient, maximize the worst signal-to-interference-and-noise ratio of speed fuzzy target, realize the robust detection of speed fuzzy target under clutter background.

This invention discloses a two-dimensional and three-dimensional co-simulation method for the design of scattering near-field scanning imaging transceivers. The method includes: establishing a three-dimensional model based on the mirror dipole theory model, and establishing a two-dimensional model based on the cross-section; simulating the high-frequency periodic motion of the needle tip by changing the distance between the needle tip and the sample in both the two-dimensional and three-dimensional models, obtaining the near-field electric field intensity and scattering power intensity with and without a sample; when the needle tip curvature radius is greater than a set threshold, changing the side length of the three-dimensional model in the three-dimensional model to obtain the scattering power intensity under different spot sizes; changing the needle tip curvature radius in the two-dimensional model to obtain the near-field electric field intensity under different needle tip curvature radii; step s5) when the needle tip curvature radius is greater than the set threshold, establishing the relationship between the obtained scattering power intensity and near-field electric field intensity to obtain the scattering power intensity when the needle tip curvature radius is less than the threshold.

Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for wireless communications using energy harvesting. One aspect provides a method for wireless communications at a user equipment (UE). The method includes receiving a configuration for communication of at least one of continuous wave (CW) and forward link (FL) signals or a back link (BL) signal, wherein the at least one of the CW and FL signals or the BL signal are communicated via frequency-division duplexing (FDD) carriers or one or more time-division duplexing (TDD) carriers; and communicating, with a wireless device, the at least one of the CW and FL signals or the BL signal in accordance with the configuration.

The invention discloses a different-rate serial circuit design method based on a QUAD transceiver. The method comprises the following steps: inputting any mode; the first transmission mode is that three transmitting and receiving channels of the QUAD transceiver transmit and receive first preset rate signals, one transmitting and receiving channel transmits and receives second preset rate signals, and the second transmission mode is that two transmitting and receiving channels of the QUAD transceiver transmit and receive third preset rate signals, one transmitting and receiving channel transmits and receives fourth preset rate signals, and one channel transmits and receives fifth preset rate signals. The third transmission mode is that the QUAD transceiver supports two channels to transmit and receive a sixth preset rate signal and two channels to transmit and receive a seventh preset rate signal, and the fourth transmission mode is that the QUAD transceiver supports four channels to transmit and receive an eighth preset rate signal, a ninth preset rate signal, a tenth preset rate signal and an eleventh preset rate signal respectively; designing a mode circuit based on an input mode and the QUAD transceiver; parameters are configured based on the mode circuit.

The application discloses a robust nonlinear transceiver design method based on a multicarrier MIMO SWIPT system. The method comprises the following steps: considering the case that there is a channel estimation error in the multicarrier MIMO SWIPT system, a receiving signal model of the transceiver is established; based on the receiving signal model of the transceiver, an optimization problem of joint precoding matrix, equalization matrix, feedback matrix and power splitting ratio is established with the total mean square error of the receiving signal being minimized as the target; the optimization problem is transformed, a preset algorithm is used to solve the transformed optimization problem, and the optimal precoding matrix, the optimal equalization matrix, the optimal feedback matrix and the optimal power splitting ratio of the subcarrier corresponding to the minimum total mean square error of the receiving signal are obtained. The method can realize the design of the nonlinear transceiver suitable for the multicarrier MIMO SWIPT system.

Multi-Gigabit Ethernet communication over shielded cables have challenging electromagnetic compatibility (EMC) and electromagnetic interference (EMI) problems. Circuitry on-board Ethernet physical layer (PHY) transceivers cannot adequately address these problems. In some cases, some circuitry may pose constraints on the transceiver design, making these problems more difficult to address. To improve EMC and increase tolerance to EMI, an improved shielded cable can be used to connect Ethernet PHY transceivers. In particular, a microwave-absorbing material is added to wrap one or more segments of the shielded cable. The microwave-absorbing material can be applied at or near the cable connectors attached to the ends of the shielded cable. One or more parameters of the microwave-absorbing material can be chosen or optimized for a particular type of shielded cable and sensitivity of the Ethernet PHY transceiver to EMC and EMI problems.

The invention discloses a robust transmit-receive design method based on a bifunctional radar communication system. The method comprises the following steps: establishing a signal model when an MIMO DFRC system has an error; the signal model comprises a radar SINR in the presence of an array amplitude-phase error and a communication signal model in the presence of a CSI estimation error; building a joint design problem of transmitted waveform and received beam forming based on a signal model; the joint design problem takes maximization of radar SINR in a worst error scene as a target function, and takes communication constraint, radar waveform constraint and energy constraint as constraint conditions; an AM-SCA algorithm is used for solving the joint design problem in an alternating iteration mode until the target function converges or the number of iterations reaches the preset maximum number of iterations, and a transmitted waveform and a received beam forming vector are obtained, so that the channel state information of the dual-function radar communication system is estimated under the condition that array amplitude phase errors and CSI estimation errors exist in the dual-function radar communication system. And target detection and multi-user communication can be realized at the same time.

This invention provides a novel transceiver design to control / compensate for the spatial-wideband effect in wideband massive multiple-input multiple-output (MIMO) systems for both sensing and communication networks. The proposed design aims to divide the ultra-wideband signal into narrow band beams and control them with a simplified exhaustive search-based precoding to align the beam angle to the target direction.

A novel radar signal processing system based on transmit-receive end design and electromagnetic original domain processing integrates transmit-receive end optimization design and electromagnetic original domain processing technology, and comprises a radar transmitting end module, a radar receiving end module and an electromagnetic original domain processing module. Through the design of a radar receiving and transmitting end, the information entropy contained in a radar echo signal set is increased, an electromagnetic original domain processing algorithm is utilized, the echo signal set received by a radar is directly processed in an electromagnetic original domain, and the radar function is achieved. According to the method, the current typical radar signal processing flow is simplified, the hardware complexity and the processing time delay can be reduced, and the method has universality and can realize multiple radar functions in a complex scene. Based on the novel radar signal processing normal form provided by the invention, the current radar system can be renovated, and the method has important significance for improving the performance of an electronic information system and maintaining the national safety.

This invention discloses a single-ended broadband variable gain amplifier and an optical transceiver system, relating to the field of optical transceiver design technology. The single-ended broadband variable gain amplifier includes a power supply terminal, an input port, an output port, multiple transconductance circuits, and multiple source degradation networks. The input port receives a single-ended input voltage signal. By setting multiple parallel-connected transconductance circuits and source degradation networks corresponding one-to-one with each transconductance circuit, each source degradation network can independently control the electrical connection state between the source of its corresponding transconductance circuit and the power supply and ground terminals, thereby adjusting the magnitude of the output current of each transconductance circuit. This, in turn, changes the total current superimposed on the output port by multiple transconductance circuits, achieving variable gain adjustment. The technical solution provided by this invention can solve the technical problems of existing single-ended broadband variable gain amplifiers, such as poor bandwidth consistency during gain adjustment, severe bandwidth limitation due to high-frequency parasitic capacitance, and high power consumption of differential structures, which is detrimental to single-ended signal reception.

The invention provides a valve-based electronic equipment board card based on an integrated optical module and a single-mode optical fiber. The valve-based electronic equipment board card comprises a PCB substrate, and a core processing module, an optical interface array and a backboard connector which are arranged on the PCB substrate, the core processing module is used for data processing and logic control of the valve-based electronic equipment; the optical interface array is welded with a plurality of receiving and transmitting integrated single-fiber bidirectional optical modules, and each single-fiber bidirectional optical module is used for connecting a single-mode optical fiber; and the backboard connector is electrically connected with a case of the valve-based electronic equipment, and is used for obtaining electric power from the case to supply power to the core processing module and the optical interface array, and realizing electric connection between the valve-based electronic equipment and the thyristor trigger monitoring unit. A traditional independent optical transceiver interface is replaced by an integrated transceiver design, so that the number of board card optical interfaces is remarkably reduced, and the failure rate of connection points is reduced; and the system complexity and the operation and maintenance difficulty are reduced through the connection design with the single-mode optical fiber.