Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

112results about How to "Simple control mechanism" patented technology

Electric control scanning waveguide leaky-wave antenna based on liquid crystal

The invention provides an electric control scanning waveguide leaky-wave antenna based on liquid crystal, belongs to the technical field of microwave antenna engineering, and aims at solving problems that a conventional electric control scanning leaky-wave antenna based on a varactor and other conventional electrically controlled elements is difficult to work at a microwave high-frequency band, and existing liquid crystal electric control scanning leaky-wave antennas require the special design of a bias circuit. The electric control scanning waveguide leaky-wave antenna comprises a top part dielectric plate layer, a metal layer, an insulation paste layer, a liquid crystal layer and a bottom part waveguide slot. The metal layer is arranged at the lower surface of the top part dielectric plate layer. The metal layer has a leaky-wave structure with etching of periodic transverse seams. Equivalent series inductance of electromagnetic wave is enabled to be increased by the periodic transverse seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer. The metal layer is provided with N periodic seam units. Seam unit spacing distance p is from lambdag / 2 to lambdag. The seams of the middle part are main radiation units. Seam length l of the main radiation unit is from lambdag / 4 to lambdag / 2. The former four and the latter four seams are auxiliary radiation units.
Owner:北京超材信息科技有限公司

Liquid crystal electrical control zero-crossing scanning leaky wave antenna based on comb-line waveguide

The invention discloses a liquid crystal electrical control zero-crossing scanning leaky wave antenna based on comb-line waveguide, which belongs to the technical field of microwave antenna construction. The problems that a conventional electrical control scanning leaky wave antenna based on a varactor and other traditional electric tuning elements difficultly works in a microwave high frequency band and the existing liquid crystal electrical control fixed-frequency scanning leaky wave antenna is difficult to realize zero-crossing scanning and requires a bias circuit which is specially designed are solved. The antenna provided by the invention comprises a top dielectric plate layer, a metal layer, a liquid crystal layer and a bottom waveguide groove. The metal layer is arranged between the top dielectric plate layer and the bottom waveguide groove. A longitudinal groove structure is arranged on the upper surface of a rectangular plate to form the bottom waveguide groove. The metal layer is in a comb-line structure. N periodic slit units are arranged between two columns of comb teeth on the comb-line structure. N periodic slit units comprise two groups of vertical slit columns and a group of transverse slit column. Through periodic transverse slits, the equivalent series inductance of electromagnetic waves spreading between the bottom waveguide groove and the metal layer is increased. Through periodic vertical slits, the equivalent parallel capacitance is increased.
Owner:北京超材信息科技有限公司

Processor and method for performing a fast fourier transform and/or an inverse fast fourier transform of a complex input signal

A processor for performing a Fast Fourier Transform and / or an Inverse Fast Fourier Transform of a complex input signal comprises a first stage for passing the input signal to a second stage when a Fast Fourier Transform procedure is to be performed and for swapping the real and imaginary components of the complex input signal before passing the signal to the second stage if an Inverse Fast Fourier Transform procedure is to be performed. The second stage has first and second radix-4 butterfly elements. A third stage is arranged to switch between first and second operating modes, the second operating mode being for processing a complex conjugate symmetrical input signal. A fourth stage has a plurality of processing units, one or more of the processing units comprising a radix-2 pipelined Fast Fourier Transform processor. The first and second radix-4 butterfly elements are arranged to perform a butterfly operation on the complex input signal to generate and deliver one or more components of a processed signal to the fourth stage. The fourth stage is arranged to process the processed signal received from the first stage according to a Fast Fourier Transform processing procedure to produce an output signal. There is also disclosed a method for performing a Fast Fourier Transform and / or Inverse Fast Fourier Transform of a complex input signal.
Owner:WIPRO LTD

Electric control zero crossing scanning waveguide leaky-wave antenna based on liquid crystal

The invention provides an electric control zero crossing scanning waveguide leaky-wave antenna based on liquid crystal, belongs to the technical field of microwave antenna engineering, and aims at solving problems that a conventional electric control scanning leaky-wave antenna based on a varactor and other conventional electrically controlled elements is difficult to work at a microwave high-frequency band, and zero crossing scanning of existing liquid crystal electric control fixed-frequency scanning leaky-wave antennas is not easy to realize and the special design of a bias circuit is required. The electric control zero crossing scanning waveguide leaky-wave antenna comprises a top part dielectric plate layer, a metal layer, an insulation paste layer, a liquid crystal layer and a bottom part waveguide slot. The metal layer is arranged at the lower surface of the top part dielectric plate layer. The metal layer has a leaky-wave structure with etching of periodic transverse seams and longitudinal seams. Equivalent series inductance of electromagnetic wave is enabled to be increased by the periodic transverse seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer. Equivalent parallel induction of electromagnetic wave is enabled to be increased by the periodic longitudinal seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer. The metal layer is provided with N periodic seam units and two conduction bands. The N periodic seam units include two groups of longitudinal seam columns and a group of transverse seam columns.
Owner:北京超材信息科技有限公司

Liquid crystal electric control zero crossing scanning leaky-wave antenna based on half-mode pectinate line waveguide

The invention provides a liquid crystal electric control zero crossing scanning leaky-wave antenna based on half-mode pectinate line waveguide, belongs to the technical field of microwave antenna engineering, and solves problems that an electric control scanning leaky-wave antenna of conventional electrically controlled elements is difficult to work at a microwave high-frequency band. The liquid crystal electric control zero crossing scanning leaky-wave antenna comprises a top part dielectric plate layer, a metal layer, a liquid crystal layer and a bottom part waveguide slot. The metal layer is arranged between the top part dielectric plate layer and the bottom part waveguide slot. The bottom part waveguide slot has a longitudinal slot structure arranged at the upper surface of a rectangular plate. The liquid crystal layer is arranged in the longitudinal slot. The metal layer has a half-mode pectinate line waveguide structure. N periodic seam units are arranged between the column of pectinate teeth and the longitudinal edge of the opposite side of a rectangular waveguide frame in a rectangular waveguide frame area. The N periodic seam units include a group s longitudinal seam columns and a group of transverse seam columns. The transverse seam columns are arranged between the longitudinal seam columns and the pectinate teeth. Equivalent series inductance of electromagnetic wave is enabled to be increased by the periodic transverse seams and equivalent parallel induction is enabled to be increased by the periodic longitudinal seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer.
Owner:北京超材信息科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products