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Inverted-trapezoidal power feed ultra-broadband U-shaped medium resonator antenna

A dielectric resonator and inverted trapezoidal technology, applied in the direction of antennas, electrical components, etc., can solve problems such as the inability to meet bandwidth requirements, and achieve the effects of simple structure, convenient processing, and easy integration

Inactive Publication Date: 2010-05-19
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is still unable to meet the bandwidth requirements of modern ultra-wideband communications

Method used

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  • Inverted-trapezoidal power feed ultra-broadband U-shaped medium resonator antenna
  • Inverted-trapezoidal power feed ultra-broadband U-shaped medium resonator antenna
  • Inverted-trapezoidal power feed ultra-broadband U-shaped medium resonator antenna

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment one: see figure 1 , figure 2 and image 3 , the ultra-broadband U-shaped dielectric resonator antenna of the inverted trapezoidal feed, the above-mentioned dielectric substrate 1, the metal floor 2, the straight microstrip feeder 5 and the feed source on the dielectric substrate 1, is characterized in that a The feed source of the U-shaped dielectric resonator 3 is an inverted trapezoidal metal feed source 4 placed on the outer wall of the U-shaped dielectric resonator 3 and connected to the straight microstrip feeder 5, and the straight microstrip feeder 5 terminal is connected to the SMA A coaxial joint, wherein the inner conductor of the SMA coaxial joint is connected to the terminal of the straight microstrip feeder 5 , and the outer conductor of the coaxial line is connected to the metal floor 2 .

Embodiment 2

[0029] Embodiment two: see figure 1 , figure 2 and image 3 , this embodiment is the same as Embodiment 1, the special feature is that the dielectric constant ε of the above-mentioned dielectric substrate 1 r =10.2, the thickness is 1.524mm, and the dielectric constant used by the U-shaped dielectric resonator antenna is ε rdr =9.8, the height is h 1 =19mm, the parameters are l 1 , l 2 ,w 1 ,w 2 : The dimensions of the rectangular metal floor and the rectangular dielectric plate are both W×L; the upper and lower bases of the inverted trapezoidal metal feed are respectively a and b, and the height is h 2 .

[0030]The specific size is finally determined by using the three-dimensional electromagnetic field simulation software Ansoft HFSS 11 for optimization and debugging. After calculation, simulation and optimization, the specific dimensions of the antenna are finally determined as follows: a=1.4mm±0.4mm, b=16mm±2mm, h 1 =19mm±2mm, h 2 =8mm±1mm, l 1 =18mm±2mm, l 2...

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Abstract

The invention relates to an inverted-trapezoidal power feed ultra-broadband U-shaped medium resonator antenna which comprises a medium substrate, a floor, a straight micro-strip feed line and a feeder source on the medium substrate, wherein a U-shaped medium resonator is arranged on the medium substrate, and the feed source is an inverted-trapezoidal metal feed source arranged on an external side wall behind the U-shaped medium resonator and connected with the straight micro-strip feed line. The terminal of the straight micro-strip feed line is connected with a SMA coaxial joint, wherein an internal conductor of the SMA coaxial joint is connected with the terminal of the straight micro-strip feed line, and an external conductor of a coaxial line is connected with the metal floor. For the antenna, the bandwidth of a terminal port with reflection loss VSWR not greater than 2 is 2.96 GHz-8.32GHz, and the resistance bandwidth is 95%. With simple structure, the antenna can realize 95% of resistance bandwidth and is much suitable for the applications of modern broadband and ultra-broadband wireless communications.

Description

technical field [0001] The invention relates to an ultra-wideband U-shaped dielectric resonator antenna fed by an inverted trapezoidal feed, in particular to an antenna that realizes ultra-wideband by combining a U-shaped dielectric resonator and an inverted trapezoidal metal patch. The antenna can be used as a broadband and ultra-wideband wireless communication terminal antenna. Background technique [0002] Since the dielectric resonator has been used as an antenna as a radiator, the dielectric resonator antenna has the advantages of small size, light weight, low cost, easy integration, no surface wave loss and metal loss, high radiation efficiency, and flexible feeding methods. It is widely used in modern wireless communication. However, due to its high Q value and relatively narrow bandwidth, the dielectric resonator uses the dielectric constant ε r In the case of ≈10, the relative impedance bandwidth is about 10%. In the recent research on the broadband of dielectric...

Claims

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Application Information

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IPC IPC(8): H01Q13/08
Inventor 钟顺时张丽娜
Owner SHANGHAI UNIV
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