Fractal ultra-wideband trap antenna with C band suppression function
A notch antenna and C-band technology, applied in the field of fractal ultra-wideband notch antennas, can solve the problems of inability to accurately suppress frequency bands, very little research on band-stop performance, blindness of antenna notch frequency bands, etc., achieving simple structure and low cost. The effect of integrating and suppressing interference frequency bands
Inactive Publication Date: 2015-05-13
XIAMEN UNIV
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Problems solved by technology
[0004] The research on ultra-wideband antennas has achieved many results, and its technology is relatively mature, but there is still room for further improvement in the research on the band-stop performance and structure of ultra-wide-band antennas. In the C-band communication system (3.7-4.2GHz) band-stop There are very few performance studies, and the notch frequency band of the antenna is relatively blind, and it cannot accurately suppress unnecessary frequency bands, which affects the use of other frequency bands
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[0026] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.
[0027] see figure 1 and 2 , figure 1 Mark 1 in the center is a dielectric substrate with a dielectric constant of 3.2 and a tangent loss of 0.002, which has a length of 40 mm, a width of 29 mm, and a height of 1.5 mm. The upper and lower sides of the dielectric substrate are covered with copper layers, and the upper surface is a T-shaped patch composed of a straight patch and two square patches and a copper clad layer 2 of the third-order improved Sierpinski array structure patch, in which the T-shaped patch is The horizontal width and vertical width of the patch are 0.8±0.2mm and 3.6±0.6mm respectively, the horizontal length and vertical length are 14±2mm and 8±1mm respectively, and the side length of the symmetrical square patch at both ends of the T-shaped patch is 0.8 ±0.2mm, the side length of the third-order improved Sierpinski array structure ...
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The invention discloses a fractal ultra-wideband trap antenna with a C band suppression function, and relates to an ultra-wideband antenna. The fractal ultra-wideband trap antenna is provided with a substrate and an SMA (Sub-Miniature-A) joint, wherein an upper surface conductor layer is coated on the upper surface of the substrate; a lower surface conductor layer is coated on the lower surface of the substrate; a planar dipole array which is arranged on the upper surface conductor layer is provided with a high-order improved Sierpinski array structure; a micro-strip line feed part which is arranged on the upper surface conductor layer is used for providing main radiation feed for the planar dipole array; an undercut gap which is arranged on the lower surface conductor layer produces electromagnetic coupling with the planar dipole array to increase the bandwidth; a band suppression gap which is arranged on the lower surface conductor layer is symmetric Z-shaped for intercepting electric wave of a specific frequency radiated by the upper surface conductor layer to form a trap band required by a user; and the SMA joint is connected with the upper surface conductor layer and the lower surface conductor layer on the substrate. The fractal ultra-wideband trap antenna has the advantages of moderate size, large impedance bandwidth, low return loss, high gain, capability of effectively suppressing C band and simple structure and can be used inan ultra-wideband communication system.
Description
technical field [0001] The invention relates to an ultra-wideband antenna, in particular to a fractal ultra-wideband trap antenna with a C-band suppression function suitable for a C-band ultra-wideband communication system that must be suppressed. Background technique [0002] As a transmission technology widely used in remote sensing and radar, in recent years, ultra-wideband (Ultra-wideband, UWB) technology has received great attention from the wireless communication industry. The ultra-wideband antenna has a bandwidth of GHz order, and voice and data communication may bring a new way. The main advantages of UWB are extremely wide bandwidth, high transmission rate, good confidentiality, strong anti-interference ability, low energy consumption, etc. It has important theoretical value and broad application prospects in many fields such as military field, communication field and radar system. . It will become a technical means to solve the contradiction between the high-spe...
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IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q21/00
Inventor 游佰强迟语寒黄天赠周建华
Owner XIAMEN UNIV