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Novel ultra wide band notch antenna based on rectangular grooves on coupling patches

A technology for coupling patch and patch antennas, which is applied in the field of ultra-wideband notch antennas and can solve problems such as imperfect impedance matching.

Inactive Publication Date: 2017-06-20
HARBIN FEIYU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the internal design of the ultra-wideband antenna has conflicting elements, including impedance can not be perfectly matched, and the size of the radiation stability ultra-wideband antenna, etc., so the ultra-wideband antenna is also subject to certain restrictions in the development process

Method used

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  • Novel ultra wide band notch antenna based on rectangular grooves on coupling patches
  • Novel ultra wide band notch antenna based on rectangular grooves on coupling patches

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Embodiment Construction

[0018] Since the UWB antenna works in the microwave frequency band, its radiation principle will be analyzed here with the help of microwave transmission line theory. Assume that the radius of the triangular radiating element of the patch antenna is half wavelength λ / 2, and the thickness of the dielectric substrate is L 3 . In this way, the triangular radiating element, the dielectric substrate and the grounding plate can be regarded as a low-impedance microstrip transmission line with a length of λ / 2, and an open circuit is formed at the edge of the radiating element. And because the thickness of the dielectric substrate is much smaller than the wavelength λ, the component of the electric field along the normal direction of the patch plane basically does not change. In the case of only considering the excitation of the main mode, the electromagnetic wave radiation can basically be considered to be caused by the edge of the open circuit part of the radiation unit. The electr...

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Abstract

The present invention relates to a novel ultra wide band notch antenna based on rectangular grooves on coupling patches. The antenna comprises a dielectric substrate (1), a patch antenna (2) comprising a pentagonal radiation unit and feeder lines, the rectangular grooves (3) and (5) forming notches on the coupling patches, and the coupling patches (4) and (6), and is characterized in that a dual-notch function is realized by grooving the rectangular grooves which are distributed symmetrically on the coupling patches, and the antenna radiation unit adopts a pentagonal patch structure. The antenna realizes the ultra wide band transmission characteristic from 3.1 GHz to 10.6 GHz (a standing-wave coefficient is less than 2), and has two narrow-band frequency bands to carry out the notch function, thereby effectively reducing the interference between the two frequency bands.

Description

technical field [0001] The invention relates to a novel ultra-wideband notch antenna based on rectangular slots on a coupling patch. Two symmetrically distributed rectangular slots are engraved on the coupling patch antenna (4) (6) to realize a double notch function. The antenna radiation unit adopts a pentagonal patch structure. The antenna realizes ultra-wideband transmission characteristics from 3.1GHz to 10.6GHz (the standing wave coefficient is less than 2), and performs trapping in two narrowband frequency bands of 5.6~6.4GHz and 8.8~9.4GHz respectively, which effectively reduces the interference with the two frequency bands. Interference between. [0002] Ultra-wideband communication technology is widely used in the fields of radar, positioning, electronic countermeasures, and secure communication. It has long been regarded as a cutting-edge military technology and closely guarded by various countries. It has not been gradually used by civilians until recent years. Th...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/52H01Q1/50
Inventor 焦天奇郝术苗孟祥余
Owner HARBIN FEIYU TECH
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