Ultra-wideband limiting filter based on left-handed material

A left-handed material and ultra-broadband technology, applied in the field of communication, can solve problems such as excessive size and unsuitable for technological progress, and achieve the effects of improved electrical performance, compact structure, and small size

Inactive Publication Date: 2017-02-22
LUSHAN COLLEGE OF GUANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in the ultra-wideband communication system, the traditional planar coupling filter has become less and less suitable for the needs of technological progress due to its large size.

Method used

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  • Ultra-wideband limiting filter based on left-handed material
  • Ultra-wideband limiting filter based on left-handed material
  • Ultra-wideband limiting filter based on left-handed material

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Embodiment Construction

[0015] Such as figure 1 , figure 2 As shown, the present invention is based on the left-handed ultra-wideband wave-limiting filter (referred to as "filter"), which is formed by etching different metal structures from a rectangular double-sided copper-clad microwave dielectric substrate. The length of the microwave dielectric substrate is L , with a width of W， The thickness of the microwave dielectric substrate is 0.8 mm, the relative permittivity εr = 2.55, and the dielectric loss tangent tanδ = 0.019.

[0016] The metal structure includes a metal slit structure etched on the front of the microwave dielectric substrate and a metal strip structure etched on the back of the dielectric substrate. The metal gap structure includes an I-shaped metal strip and two rectangular metal plates 4. The I-shaped metal strip includes a metal arm I1 and a metal arm II2 which are arranged on the opposite side edges of the microwave dielectric substrate in the longitudinal direction and are...

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Abstract

The invention relates to an ultra-wideband limiting filter based on the left-handed material, which relates to the technical field of communication. The ultra-wideband limiting filter is formed by different metal structures that are etched by a rectangular double-sided copper-plated microwave medium substrate. The metal structure comprises a metal slit structure etched on the front surface of the microwave dielectric substrate and a metal strip structure etched on the back surface of the dielectric substrate; the metal slit structure comprises an H-shaped metal strip structure and two rectangular metal plates, wherein the metal strip structure is elongated and H-shaped metal structure on the microwave medium substrate and comprises three metal arms arranged in parallel with each other, the metal arm IV, the metal arm V And the metal arm VI, and the metal arm VII in the vertical direction, the metal arm V is located between the metal arm IV and the metal arm VI and forms a cross-coupling structure with two rectangular metal plates on the front side, and the middle portions of the metal arm IV, the metal arm VI, and the metal arm VII are provided with grooves without metal cover. The ultra-wideband limiting filter has the advantages of compact structure and small size, and can meet the requirements of miniaturization of ultra-wideband wireless communication system well.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an ultra-wideband filter. Background technique [0002] Ultra Wideband (UWB) technology is a new type of wireless communication technology. It directly modulates the impulse pulse with a very steep rise and fall time, so that the signal has a bandwidth of GHz order. The UWB communication system does not use a carrier, but uses nanosecond to picosecond-level non-sinusoidal narrow pulses to transmit data. Therefore, it occupies a wide spectrum and is suitable for high-speed, short-distance wireless personal communication. The U.S. Federal Communications Commission (FCC) stipulates that the operating frequency range of UWB is from 3.1GHz to 10.6GHz, and the minimum operating bandwidth is 500MHz. Due to its technical characteristics and advantages, ultra-wideband (UWB) technology has been widely used in military and civilian communication fields, and has wider application pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 曾文波李顺利
Owner LUSHAN COLLEGE OF GUANGXI UNIV OF SCI & TECH
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