40results about How to "Improve the effect of receiving signals" patented technology

The invention discloses a communication system and a holographic waveguide antenna based on matrix illumination. The LED divergent light is modulated into parallel light by using a lens array; the direction of the light is controlled at the same time, and the incident angle relationship between the light source and the target plane corresponding to each partition is established; The incident angles of the parallel rays in the regions are all different, and the partition security communication effect can be achieved through the corresponding holographic waveguide antenna. At the same time, the holographic waveguide antenna proposed by the present invention can integrate the optical signal received in the large-area receiving end Rx into the output end Ox through the modulation signal end Mx through a holographic waveguide structure, thereby realizing the effect of enhancing the received signal.

The embodiment of the application discloses a control method and apparatus of an antenna tuning switch, a terminal device and a storage medium. The method comprises: an application scene in which a terminal device is located is obtained; according to the application scene, a target antenna tuning switch state is determined; and an antenna tuning switch state is switched to the target antenna tuning switch state by controlling a modem. According to the control method provided by the embodiment of the application, the antenna adjusting switching state is switched based on the current applicationscene of the terminal device and thus the performance of the antenna in the terminal device is optimized in the current application scene, so that the signal receiving capability of the antenna in the terminal device is enhanced.

The invention relates to the adapter technical field, and provides an adapter and a vehicle-mounted diagnosis system; the adapter comprises a casing; a male joint used for connecting a diagnosis socket of the vehicle-mounted diagnosis system and a female joint used for connecting with a vehicle-mounted diagnosis system terminal are arranged in the casing; the male joint comprises at least two pins; the female joint comprises at least two pin holes; the pins are matched with the pin holes one by one; the adapter also comprises an electric connecting structure used for electrically connecting the pins with the corresponding pin holes; the position of each pin on the casing and the position of the corresponding pin hole on the casing are matched to form a 180-rotation manner. Compared with the prior art, the male and female joints are arranged in the casing of the adapter; the male joint inserts the diagnosis socket of the vehicle-mounted diagnosis system, and the vehicle-mounted diagnosis system terminal inserts the female joint, thus changing the direction of the antenna in the vehicle-mounted diagnosis system terminal, and improving the capacity of the vehicle-mounted diagnosis system terminal receiving signals.

The invention relates to the technical field of ultrasonic probes, in particular to an ultrasonic array probe signal acquisition component and a preparation method thereof, and a probe. The acquisition component provided by the invention comprises two or more probe array elements, each probe array element comprises a backing and a piezoelectric layer composed of two or more piezoelectric crystal plates; flangings of positive electrodes and negative electrodes of the two piezoelectric crystal plates are butted; the piezoelectric layer is divided into a lead region, a heat conduction region and a signal region; a backing is connected to the signal region, and the bottom of the backing is connected with the bottom of the backing of an adjacent probe array element; a heat dissipating piece is connected to the heat conduction region, and the heat dissipating piece is connected with the ground electrode of an outer cable; and a flexible circuit board is connected with the lead region, and the flexible circuit board is connected with the outer cable through the probe circuit board. According to the ultrasonic array probe signal acquisition component and the probe provided by invention, the problem of probe temperature rising is effectively solved, the send-receive capacity of signals is improved, probe functions of testing image resolution ratio and sharpness are improved, and the impact of the probe array element signal crosstalk to imaging sharpness is decreased.

The invention discloses a method for sending the broadcast information in a single frequency network, which is characterized in that the method comprises the steps that: A. the sectors of the single frequency network are set in groups and the sectors of the same base station are specified in different groups; B. the scrambling codes and the channel estimation codes which are different from each other are allocated for various groups of sectors; and C. the various sectors send the signal containing the channel estimation codes and the broadcast information after going through the scrambling processing adopting the scrambling codes into the coverage area. The problem that the performance of receiving the signal by UE at the sector margin of the same base station in the single frequency network is obviously lowered is solved by the invention. The invention also discloses a single frequency network.