5 results about "Plasmon waveguide" patented technology

The embodiment of the invention provides a plasmon waveguide structure and a refractive index sensor, and the plasmon waveguide structure comprises a metal substrate layer; a multi-period composite metal grating layer; the dielectric layer is arranged between the metal substrate layer and the multi-period composite metal grating layer; wherein the multi-period composite metal grating layer is composed of nano-metal supercell structures which are periodically arranged in the direction, and each nano-metal supercell structure is formed by periodically arranging at least two metal structures with different grating periods in the direction according to a preset grating interval; and the structures are alternately arranged in the direction at preset periodic intervals. According to the invention, decoupling and flexible regulation and control of resonance position and intensity can be realized based on a plurality of independent resonant cavities with spatial separation provided by the multi-period composite metal grating layer.

The invention discloses a phase shifter and an antenna, and relates to the technical field of phase shifters. The phase shifter comprises an artificial surface plasmon circuit structure, wherein the artificial surface plasmon circuit structure comprises an artificial surface plasmon waveguide; the medium disturbance element and the artificial surface plasmon waveguide are opposite to each other and are arranged at an interval; and the MEMS actuator is connected with the medium disturbance element, and the MEMS actuator is configured to drive the medium disturbance element to move relative to the artificial surface plasmon waveguide, so that the medium disturbance element interacts with the local electromagnetic field of the artificial surface plasmon waveguide. Through the characteristics of high-precision driving and low power consumption of the MEMS technology, the provided phase shifter has low insertion loss and a wide phase adjustment range.

The application discloses a true time delay line based on a misaligned symmetric artificial surface plasmon structure and belongs to the field of novel microwave devices, comprising a metal ground, a dielectric substrate arranged above and below the metal ground, a true time delay line structure arranged on the dielectric substrate above the metal ground, the true time delay line structure comprising an artificial surface plasmon waveguide periodically arranged by a plurality of misaligned symmetric artificial surface plasmon unit structures loaded with varactor diodes, a microstrip line for feeding the artificial surface plasmon waveguide, and a varactor diode bias circuit composed of a metal patch and the microstrip line. The true time delay line based on the misaligned symmetric artificial surface plasmon structure has the characteristics of approximately constant time delay value in a wideband range, real-time regulation of the time delay value through the varactor diode, low insertion loss and easy processing, and has a wide application prospect in a wideband phased array system.

The invention provides a sliding symmetric unit structure and a circularly polarized frequency scanning antenna thereof. The sliding symmetric unit structure is provided with a first strip-shaped structure, a second strip-shaped structure and a third strip-shaped structure, one end of the first strip-shaped structure is connected with one end of the second strip-shaped structure, and a first included angle is formed between the first strip-shaped structure and the second strip-shaped structure; the other end of the second strip-shaped structure is connected with one end of the third strip-shaped structure, and a second included angle is formed between the second strip-shaped structure and the third strip-shaped structure. Through the structural characteristics, the artificial surface plasmon guided wave structure is adopted to realize frequency scanning, and the symmetry of an electric field is destroyed by loading a periodic circular patch and an arc groove, so that the technical problems of circular polarization and wide-angle scanning characteristics in a relatively wide frequency band range are solved.

The application discloses a kind of harmonic amplitude frequency modulators based on artificial surface plasmon, belong to novel microwave device field, by metal backplate, upper layer metal structure and separate dielectric layer constitute, upper layer metal structure is by the periodic arrangement of artificial surface plasmon unit structure loaded with PIN tube into time domain coding artificial surface plasmon waveguide, transition structure being arranged at the two ends of the time domain coding artificial surface plasmon waveguide, and high-frequency isolation structure of connection control signal composition, by controlling the period and duty cycle of the square wave signal, the frequency and amplitude adjustment of output harmonic signal are carried out, and 0 order harmonic is filtered out, the application has the amplitude frequency of output harmonic signal adjustable, can filter out 0 order harmonic, with the advantages of easy processing, small size and low cost.