37results about How to "Achieving Directed Radiation" patented technology

The invention discloses a unipolar high-gain microstrip vibrator; it includes two vibrator pieces arranged symmetrically in the center, each vibrator piece is provided with a plurality of hollow isolation slots side by side, and each isolation slot is provided with a plurality of Loading hole; through such a reasonable structural design, the distributed loading technology is used on the radiation element, and through the comprehensive optimization of a series of technologies, the further miniaturization of the antenna is realized, which can well meet the requirements of the current communication system. Due to the adoption of the above structure, the control of the radiation pattern of the antenna is realized, which has the characteristics of directional radiation and obtains a higher gain. Therefore, the present invention has excellent comprehensive characteristics such as high symmetry, high integration, miniaturization, good radiation characteristics, high gain, etc., and is low in cost and easy to integrate.

The invention provides an ultra-wideband high-gain antenna based on a radial disk impedance converter. According to the ultra-wideband high-gain antenna, the radial disk technology is introduced into the ultra-wideband antenna design for the first time, the design of the radial disk impedance converter is added to a feeding position of the antenna, the ultra-wideband operation problem of different transmission line converters in a feeding system can be solved, and the effect that an antenna radiator can achieve effective conversion and directed radiation of electromagnetic energy under the condition of wideband feeding can be guaranteed. Meanwhile, a ridge waveguide structure with electric field and magnetic field centralizing effects is adopted, and two side surfaces of a ridge waveguide cavity used for energy exchange adopt a triangular ridge structure with an ultra-wideband property, thereby guaranteeing the effect that electromagnetic waves of different frequencies have well matched electromagnetic energy conversion cavities. The ultra-wideband high-gain antenna based on the radial disk impedance converter adopts the large-diameter gradually changing and ridge directional horn radiator design technologies, can achieve high gain and directed radiation of the antenna within ultra-wideband, and can control polarization characteristic and directional diagram sidelobes of the antenna.

The invention discloses a high-power microwave ring-focus double-reflector antenna, which includes a TEM-circular waveguide TM coaxially connected with a microwave source 01 mode converter, sub-reflector, main reflector and horn antenna, the sub-reflector is set opposite to the main reflector; the output end of the mode converter is connected to the horn antenna, and the inner and outer radii of the input port of the mode converter are in line with the microwave source Consistent; the sub-reflector is an ellipsoid, and the ellipse ET section rotates around the OT axis for one circle. The sub-reflector includes focus O and focus C. The phase center of the horn antenna is located at the focus O of the sub-reflector. The main reflector is a parabolic ring The surface is rotated around the OT axis by the parabola PQ section, and the focal point of the main reflector coincides with the focus C of the secondary reflector. The ring-focus double-reflector antenna is directly connected to the microwave source to achieve high gain. A coaxial mode converter is designed between the horn antenna and the microwave source to make full use of the axial space to make the structure compact, and finally realize the directional radiation concentrated in the axial direction.

The invention discloses an RFID high-frequency antenna based on a transparent flexible substrate and a preparation process, which belongs to the technical field of electronic tags, and solves the problems of low transparency, poor directional radiation, complicated process and low product quality of the RFID antenna in the prior art. It includes an insulating transparent substrate layer and an antenna radiation structure. The antenna radiation structure is arranged on the surface of the substrate layer. The antenna radiation structure includes a conductive pattern unit, a circuit connection unit and a positioning arm. The conductive pattern unit includes a first substructure, a second substructure and third substructure. In the present invention, the line width of the conductive pattern unit is small, and the transparent and soft base material is used to make the antenna transparent as a whole. The ends of the first substructure and the second substructure are disconnected to realize directional radiation and reduce mutual coupling interference. The unique way of connecting with the circuit connection unit on the same plane, combined with the single-side printing and single-side etching process to prepare the antenna, simplifies the preparation of the antenna and reduces the material consumption.

The invention discloses a bipolar microstrip oscillator with isolating rods. An oscillator circuit structure comprises four oscillator sheets. Each oscillator sheet is provided with a plurality of hollow isolating slots parallelly, and each isolating slot is provided with a plurality of loading holes in two sides. Through such a reasonable structural design, distributed load technology is used on a radiation unit. Through comprehensive optimization of a series of technologies, an antenna is further miniaturized, thereby satisfying the requirements of a communication system in the prior art. With the above structure, the oscillator realizes antenna radiation directional diagram control characterized by directional radiation with a high gain. Thus the oscillator is characterized by high symmetry, high integrated level, miniaturization, good radiation features, high gain, low costs and easy integration.

The invention discloses a method for realizing near-field focusing in a microwave wireless energy transmission system, relates to microwave wireless energy transmission directional radiation technology, and belongs to the technical field of basic electrical components. This method firstly determines the near-field position of the focal point in the microwave wireless energy transmission, and deduces the spatial phase difference of adjacent array elements in the focused state, the distance between the focal point and the array, and the direction of the array element focusing The phase difference of the excitation current of adjacent array elements is calculated from the relationship between the point radiation beam direction, and the influence of the distance difference between the array element and the focus point on the orientation accuracy is considered, which can realize the directional radiation when focusing in the near field, which is a great support for future high-power The high-efficiency microwave wireless energy transmission system lays the foundation for directional radiation.

The invention proposes a directional high-gain microstrip antenna, and mainly solves the problems of small gain and poor directivity in the prior art. A radiation unit consists of three rectangular patches, and is printed on the upper surface of an upper layer dielectric substrate, the rectangular patches of left and right sides are connected with the floor through first metalized via holes, the floor is printed on the support surface of a lower layer dielectric substrate, the central position is provided with a rectangular gap used for exciting the radiation unit, a T-shaped microstrip line is printed on the lower surface of the lower layer dielectric substrate and is connected with a feed unit, thereby realizing signal transmission, the floor is connected with a first metal bonding pad and a second metal bonding pad through second metalized via holes, the upper layer and lower layer dielectric substrates form a laminated structure, a reflecting plate is arranged under the laminated structure and is supported by the feed unit and a parasitic unit, thereby suppressing backward radiation, the feed unit is connected with the first metal bonding pad to transmit a radio frequency signal, and the parasitic unit is connected with the second metal bonding pad, thereby suppressing cross polarization. The antenna provided by the invention is high in gain and good in directivity, and can be used for a satellite communication and radar system.