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Vivaldi antenna with notched characteristics

A technology of notch characteristics and antennas, applied in antennas, resonant antennas, electrical short antennas, etc., can solve the complex structure of Vivaldi antennas, low passband gain of non-notched frequencies, and poor frequency selectivity at notches, etc. problems, to achieve the effects of easy processing and integration, good frequency selectivity at the notch, and good antenna directivity

Inactive Publication Date: 2017-09-19
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In summary, the existing problems in the prior art are: the Vivaldi antenna with notch characteristics has a complex structure, which is not easy to process and integrate, and the gain of the non-notch frequency passband is not high, and the frequency selectivity at the notch is not high. Well, not for modern wireless communication systems

Method used

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  • Vivaldi antenna with notched characteristics
  • Vivaldi antenna with notched characteristics
  • Vivaldi antenna with notched characteristics

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Embodiment Construction

[0027] Such as figure 1 As shown, the present invention has a Vivaldi antenna with notch characteristics, including a rectangular dielectric substrate 5 and a metal ground plate 4 attached to the lower surface of the dielectric substrate 5, and a grooved line structure 3 is opened on the metal ground plate 4, and the The slot line structure 3 is located on the long axis of the dielectric substrate 5 and is symmetrical with respect to the long axis of the dielectric substrate 5;

[0028] It also includes an input port feeder 1 and a stepped impedance resonator 2 located on the upper surface of the dielectric substrate 5. The stepped impedance resonator 2 is axisymmetric with respect to the slot line structure 3 on the metal ground plate 4. The two ends of the stepped impedance resonator 2 are connected to the The metal ground plate 4 is electrically connected;

[0029] Both the input port feeder 1 and the stepped impedance resonator 2 are parallel to the short axis of the diel...

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Abstract

The invention discloses a Vivaldi antenna with notched characteristics, which comprises a rectangular dielectric substrate (5) a metal grounding plate (4) attached to the lower surface of the dielectric substrate (5), and is characterized in that the metal grounding plate (4) is provided with a slot line structure (3), and the slot line structure (3) is located at a long axis of the dielectric substrate (5) and symmetric relative to the long axis of the dielectric substrate (5). The Vivaldi antenna further comprises an input port feeder (1) and a stepped impedance resonator (2) which are located at the upper surface of the dielectric substrate (5), wherein the stepped impedance resonator (2) is axisymmetric relative to the slot line structure (3) on the metal grounding plate (4), and two ends of the stepped impedance resonator (2) are electrically connected with the metal grounding plate (4); and the input port feeder (1) and the stepped impedance resonator (2) are parallel to a short axis of the dielectric substrate (5). The Vivaldi antenna with notched characteristics is simple in structure, high in radiation gain and good in directivity.

Description

technical field [0001] The invention belongs to the technical field of filter antennas, in particular to a Vivaldi antenna with notch characteristics, simple structure, high radiation gain and good directivity. Background technique [0002] In recent years, with the competition in the wireless communication market, communication is developing towards high speed and broadband, and spectrum resources are extremely limited. It is required that mobile communication equipment should be able to work under multiple frequency bands and multiple standards. [0003] Filter antennas include antenna and filter components, which are usually independently designed and optimized according to standard impedance units and then directly connected together. However, due to the mutual influence between devices, the impedance mismatch after cascading often occurs and the overall performance deteriorates. As an improvement, an additional matching circuit is added between the antenna and the filt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q9/04
CPCH01Q1/38H01Q1/50H01Q9/0442
Inventor 徐艳卉徐海艳裴天齐陈全刚王建朋
Owner NANJING UNIV OF SCI & TECH
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