10results about How to "Reduce physical size" patented technology

This invention discloses an integrated pump source and system. The integrated pump source includes: a pump source for generating pump light; multiple collimating lens groups, each corresponding to a light source module, for collimating the pump light emitted by the corresponding light source module; a beam splitter disposed in the output light path of at least one of the collimating lens group, focusing lens, and reflector, for splitting at least one of the output light to form a first-level pump light and a second-level pump light; a reflector disposed in the output light path of the collimating lens group and / or the beam splitter, for deflecting and guiding at least a portion of the output light; a focusing lens disposed in the output light path of the reflector and / or the beam splitter, for focusing the output light; a first output pigtail for receiving the focused first-level pump light and outputting it outward; and a second output pigtail for receiving the focused second-level pump light and outputting it outward.

The application discloses a miniaturized multilayer capacitive coupling LTCC dual-frequency antenna, which comprises an LTCC substrate, four metal layers embedded in the LTCC substrate, and a feeding electrode, a rear auxiliary electrode, a left ground electrode and a right ground electrode packaged on the surface of the LTCC substrate. The LTCC substrate comprises five dielectric layers, and the four metal layers are sequentially stacked in the vertical direction and are separated by the dielectric layers between adjacent metal layers. The four metal layers comprise a first coupling patch and a second coupling patch, a third coupling patch, a first radiation plate and a second radiation plate. The first coupling patch and the third coupling patch are coupled with the first radiation plate through interlayer coupling to generate a first resonant frequency; and the second coupling patch and the second radiation plate are coupled through interlayer coupling to generate a second resonant frequency which is higher than the first resonant frequency. The application realizes dual-frequency operation in a small size by optimizing the antenna structure, and has the characteristics of simple structure, easy processing and stable performance.

The application relates to the technical field of laser gas detection, and provides a micro laser gas detection module and a gas detection method, which comprise a shell, a gas chamber cavity, a laser emission assembly, a mirror group and a laser receiving assembly. The gas chamber cavity is formed in the shell, the laser emission assembly, the mirror group and the laser receiving assembly are arranged in the gas chamber cavity, the optical axis of the laser emission assembly and the optical axis of the laser receiving assembly are vertically arranged in space, the mirror group comprises a first mirror group and a second mirror group which are oppositely arranged along the depth direction of the gas chamber cavity, the first mirror group is composed of two first plane mirrors which intersect at an angle of 90 DEG, the second mirror group is composed of two second plane mirrors which intersect at an angle of 90 DEG, the vertical distance between the axis line where the two first plane mirrors in the first mirror group intersect and the axis line where the two second plane mirrors in the second mirror group intersect is a first distance. The application can eliminate interference caused by stray light.

The application belongs to the technical field of analog integrated circuits, and particularly relates to a band gap reference circuit controlled by a digital control module. The application adopts a relatively simple digital control module, controls the state of the band gap reference through PDN and PDP signals generated by the digital control module, controls the power-on and power-off of the band gap reference, reduces static power consumption, reduces the number of physical circuit components, greatly simplifies the working state control process of the whole BGR, and significantly reduces the design and maintenance cost of the circuit. The application guarantees the rapid and stable start of the circuit, simplifies the design, and reduces the power consumption. The application avoids the problems caused by the introduction of complex control logic and multiple circuit components for realizing the stable work of the traditional analog circuit design, reduces the physical size of the circuit, and reduces the design difficulty and cost.

This invention proposes a high-performance LC high-pass filter, comprising a signal input terminal, a signal output terminal, and a common ground terminal, and further comprising a first resonant unit, a second resonant unit, a third resonant unit, a fourth resonant unit, and a fifth resonant unit connected in sequence. This invention can be used in carrier aggregation scenarios to suppress blocking interference caused by low-frequency transmitted signals to high-frequency receivers, while allowing high-frequency signals to pass through without distortion. Its steep stopband characteristics ensure extremely high suppression even at frequencies very close to the passband, effectively protecting sensitive receiving circuitry. By employing a Π-type capacitor network structure, the bandwidth of the high-pass filter is extended by 6%. Furthermore, the integrated design reduces its physical size by approximately 10%, making it highly suitable for space-constrained system applications.

The invention provides a compact broadband band-pass filter adopting a parallel coupling line structure, which belongs to the technical field of microwave filters, and comprises a parallel coupling part and a loading microstrip part, on the premise of keeping the equivalent total electrical length as a quarter wavelength corresponding to the central working frequency, a plurality of resonance modes are excited, a plurality of transmission poles are formed in a passband, the broadband band-pass characteristic is realized, and the physical size is reduced; the loading microstrip part is composed of a plurality of microstrip lines, is arranged in a plane adjacent area of the parallel coupling part, and forms bypass loading in an out-of-band frequency band, so that main transmission signals and signals reflected by bypasses are subjected to destructive interference at a specific frequency, a plurality of transmission zero points are formed out of a band, the stop-band suppression range is expanded, and higher harmonics are suppressed. The filter adopts a single-layer planar microstrip structure, and has the advantages of compact structure, wide stop band, strong harmonic suppression capability and good adjustability of passband and stop band performance.

The invention provides a low-RCS (radar cross section) dual-polarized antenna compact unit based on secondary interference cancellation. The low-RCS dual-polarized antenna compact unit comprises a first dielectric plate, a second dielectric plate, a radiation patch, a metal floor and a dual-polarized feed network. The radiation patch is composed of four metal patches which are symmetrically distributed in a 90-degree rotation mode, each patch comprises a triangular part, the first edge of the triangular part faces outwards, and the opposite angles of the triangular part face the center. The metal floor is located on the lower surface of the first dielectric plate, an isolation hole is formed in the metal floor, a preset vertical distance is kept between the metal floor and the radiation patch, and the preset vertical distance is configured to enable scattered waves generated by the radiation patch and scattered waves generated by the metal floor to have a phase difference of 180 degrees + / -37 degrees in a preset frequency band; and the first side of each patch is connected with the floor through a plurality of short-circuit metal through holes which are distributed at equal intervals. And the dual-polarization feed network is positioned on the lower surface of the second dielectric plate, comprises two paths of orthogonal polarization networks, and is connected with the patch through a feed metal through hole penetrating through the isolation hole.

The invention relates to the technical field of antennas, in particular to a marginal inductive loading-based radio frequency identification miniaturized narrow-beam antenna, which comprises a top dielectric substrate and a bottom dielectric substrate, the lower surface of the bottom dielectric plate is provided with a reflection copper-clad grounding plate, and the upper surface is provided with a feed network. The upper surface of the top layer dielectric substrate is provided with a rhombus metal patch with two feeding points, and four corners of the rhombus metal patch are respectively located at the midpoint positions of four edges of the top layer dielectric substrate; the four corners of the top layer dielectric substrate are respectively provided with a triangular parasitic patch, and each triangular parasitic patch is connected with the reflection copper-clad grounding plate on the lower surface of the bottom layer dielectric substrate through a short circuit screw. The top layer dielectric substrate and the bottom layer dielectric substrate are kept at an interval of a specific height through the short circuit screws, so that an air layer is formed; and two feed points of the rhombic metal patch are respectively connected with a feed network on the upper surface of the bottom dielectric substrate through a metal probe which vertically penetrates through the air layer.

The invention discloses a surgical power handle system and an identification method thereof, and belongs to the technical field of medical equipment. The system comprises an operation power handle and an operation power system host, and non-contact handle identification and data access are achieved in a radio frequency identification mode. An RFID electronic tag is arranged in the plug of the handle, a radio frequency identification module and a radio frequency identification coil are arranged in the host, and when the handle is inserted into the host through the pin, the radio frequency identification module reads or writes data in the RFID electronic tag in a non-contact manner through the radio frequency identification coil. A data storage area of the RFID electronic tag comprises a fixed data area and a changeable data area which are respectively used for storing identity information and dynamic use data of the handle. Handle recognition and data interaction can be achieved without additional physical wiring, the reliability of the system is improved, the service life of the system is prolonged, meanwhile, the using state of the handle can be monitored in real time, and maintenance and management are convenient.

The invention relates to a time domain interleaving SAR ADC capacitor mismatch calibration method, which belongs to the technical field of electronic circuits, is executed by a digital calibration module, and comprises the following steps: alternately sampling and holding an input signal through a time domain interleaving sampling network, and respectively distributing the input signal to a first analog-to-digital conversion branch and a second analog-to-digital conversion branch, a positive Dither disturbance signal and a negative Dither disturbance signal are respectively applied, a first digital code and a second digital code are respectively output, and weight estimation values of capacitor arrays in the first analog-to-digital conversion branch and the second analog-to-digital conversion branch are iteratively updated based on a minimum mean square algorithm; and a weighted difference value output by the first analog-to-digital conversion branch and the second analog-to-digital conversion branch approaches to zero. According to the method, the problem that deviation exists between the actual weight and the expected weight of the SAR ADC due to relative mismatch of the capacitor array in the manufacturing process of the SAR ADC is solved.