5results about How to "Reduce plane size" patented technology

This invention belongs to the field of microwave communication technology, specifically relating to a PIFA antenna for 5G dual-band coverage. The invention includes a rectangular metal patch on a top surface, a substrate, and a metal ground plane stacked from top to bottom. A row of grounding vias is disposed through the substrate, and this array of grounding vias is located at the lower end of one side of the rectangular metal patch on the top surface. A coaxial feeding structure is disposed below the rectangular metal patch on the top surface. The antenna excites its fundamental mode TM through the coaxial feeding structure. 0.5,0 Mode and three higher-order modes TM 0.5,1 Pattern, TM 0.5,2 Pattern, and TM 0.5,3 The pattern includes a rectangular metal patch on the upper surface with a first slot along its vertical center line; the first slot has an opening on the side furthest from the grounding via for adjusting the TM. 0.5,1 Pattern and TM 0.5,3 The resonant frequency of the mode; a pair of second slits are orthogonally arranged on both sides of the first slit; the second slits are used to modulate the TM. 0.5,0 Pattern and TM 0.5,2 The resonant frequency of the mode. The antenna design proposed in this invention has advantages such as simple structure, relatively wide dual-band coverage, small size, and low profile.

This invention provides a highly integrated underground pressure regulating device, belonging to the field of gas pressure regulating boxes, comprising a ventilation venting signal tower and an underground pressure regulating box. The ventilation venting signal tower is connected to the underground pressure regulating box via a pipeline assembly. The underground pressure regulating box includes a box body and two integrated pressure regulating devices. The box body has two receiving cavities, each containing one integrated pressure regulating device. One side of the box body is connected to a main inlet pipe and a secondary inlet pipe, and the other side of the box body is connected to a main outlet pipe and a secondary outlet pipe. The main inlet pipe, one of the receiving cavities, and the main outlet pipe are connected; the secondary inlet pipe, the other receiving cavity, and the secondary outlet pipe are connected. An inlet valve is installed on each of the main and secondary inlet pipes, and an outlet valve is installed on each of the main and secondary outlet pipes. The purpose is to solve the problem of the large footprint of underground pressure regulating devices. The achieved technical effect is a reduction in the footprint.

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.

This utility model relates to the field of electromagnetic wave conduction technology, and in particular to a conductor, a strip wire, and a power combining device. The conductor includes a branch conductor connected to a main conductor. The main conductor has a height of H1 and a width of W1. The branch conductor has a height of H2 and a width of W2, where H1 > W1 and H2 > W2. This provides a conductor with a smaller planar size, which is beneficial for device miniaturization. The strip wire uses the conductor, and the power combining device uses the strip wire.

The utility model discloses an improved floating plate upper -placed formula slab shear hinge, this shear hinge includes the embedded sleeve pipe in the floating plate, installs the stud in this embedded sleeve pipe, the upper surface of low side's floating plate places the height -adjusting base plate, and the height -adjusting base plate or the floating plate is provided with the buffer pad and the shear plate, and the shear plate, buffer pad, height -adjusting base plate realize the fixed through the double -layer single -cut groove self -locking nut and flat washer of stud top. Wherein, be provided with stiffened plate on shear plate, and through the optimization shear hinge stud's layout position solved the uneven problem of existing shear hinge stud stress. Through the optimization shear plate shape, reduced the thickness of shear plate, saved the use of material, embedded steel sleeve pipe bottom 2 layer bottom plate for increasing the pullout resistance of embedded steel sleeve pipe. The stud only sets up the screw thread in the lower part, is used for the axial force that the stud received is transmitted to the inside of floating plate, reduces the stress level of floating plate surface concrete to reduce or avoid the damage of the board body.