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Indirect feed type omnidirectional printed antenna with radiant load

A printed antenna, radiation type technology, applied in the antenna grounding device, radiating element structure form, antenna grounding switch structure connection and other directions, can solve the problems of high gain, wide bandwidth, and the antenna cannot satisfy the omnidirectional good at the same time, and achieves low cost. , improve stability, light weight effect

Active Publication Date: 2014-07-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an indirect-fed omnidirectional printed antenna with a radiating load to solve the problem that the current antenna cannot satisfy the requirements of omnidirectionality, wide bandwidth and high gain at the same time.

Method used

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  • Indirect feed type omnidirectional printed antenna with radiant load
  • Indirect feed type omnidirectional printed antenna with radiant load
  • Indirect feed type omnidirectional printed antenna with radiant load

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Experimental program
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specific Embodiment approach 1

[0012] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, the antenna of this embodiment includes a dielectric plate 1, a radial terminal load 2, a cross center feeder 3, a coplanar waveguide center feeder 4, a first ground plate 9, a second ground plate 10, a plurality of first common A planar waveguide feeding unit 5, a plurality of second coplanar waveguide feeding units 6, a plurality of third coplanar waveguide feeding units 7 and a plurality of fourth coplanar waveguide feeding units 8, and the dielectric board 1 is printed with radiation Type terminal load 2, cross center feeder 3, coplanar waveguide center feeder 4, multiple first coplanar waveguide feeding units 5, multiple second coplanar waveguide feeding units 6, multiple third coplanar waveguide feeding units unit 7 and a plurality of fourth coplanar waveguide feeding units 8, the upper end of the coplanar waveguide center feeder 4 is connected to the radial terminal load 2...

specific Embodiment approach 2

[0017] Specific implementation mode two: combination Figure 1-Figure 4 To illustrate this embodiment, the radial terminal load 2 of this embodiment is isosceles trapezoidal, combined or circular, wherein the combined shape is composed of a rectangle and a bow, the long side of the rectangle is equal to the length of the chord of the bow, and the upper part of the isosceles trapezoid is The length of the bottom is d=5mm, and the length of the bottom is equal to the width of the coplanar waveguide central feeder 4, which is w 1 , the height of the isosceles trapezoid is l 1 The length of the long side of the combined rectangle is d=17.5mm, the length of the short side is 9.0mm, and the height of the arch is 4.0mm; the diameter of the circle is d=16mm, and its top is close to the edge of the medium plate. Other implementation manners are the same as the specific implementation manner 1.

specific Embodiment approach 3

[0018] Specific implementation mode three: combination Figure 5 - FIG. 7 illustrates this embodiment. In this embodiment, a coplanar waveguide is used for feeding power, and the radial terminal load 2 is an isosceles trapezoid. The coplanar waveguide cross-coupling feeding printed antenna is placed on a dielectric board, and the dielectric constant of the dielectric board material ε r =4.4; the width of the upper side of the radial terminal load 2 is d, the width of the lower side is the same as the width of the coplanar waveguide central feeder 4, and the size of the antenna is: h=0.5mm, t=0.1mm, l 1 = 15mm, l 2 =17.25mm, l 3 = 3mm, l 4 = 17.25mm, g = 0.4mm, w 1 = 0.8mm, w 2 =5.8mm, L=133.5mm.

[0019]According to the size required above, the actual antenna was made and tested. The results show that the reflection coefficient of the antenna is lower than -10dB in the frequency band of 4.3GHz-5.1GHz, and the relative bandwidth is 17%. The designed antenna is similar t...

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Abstract

The invention discloses an indirect feed type omnidirectional printed antenna with a radiant load, and relates to a printed antenna. The antenna can solve a problem that a present omnidirectional antenna cannot have good omnidirectional radiativity, relatively wide bandwidth, and relatively high gain at the same time. A radiant-type terminal load, a cross central feeder line, a coplanar waveguide central feeder line, a plurality of first coplanar waveguide feed units, a plurality of second coplanar waveguide feed units, a plurality of third coplanar waveguide feed units, and a plurality of fourth coplanar waveguide feed units are printed on a dielectric slab. An upper end of the coplanar waveguide central feeder line is connected with the radiant-type terminal load. The coplanar waveguide central feeder line is arranged in parallel with the cross central feeder line. An outer side wall of the coplanar waveguide central feeder line is provided with the plurality of first coplanar waveguide feed units at intervals and a first earth plate. An outer side wall of the cross central feeder line is provided with the plurality of second coplanar waveguide feed units at intervals and a second earth plate. The indirect feed type omnidirectional printed antenna is used in a C-band point-to-multipoint communication field.

Description

technical field [0001] The invention relates to a printing antenna, in particular to an indirect feeding omnidirectional printing antenna with a radiation load. Background technique [0002] The printed antenna is an antenna made with modern printed circuit board technology. The omnidirectional antenna is an antenna that has basically no difference in radiation characteristics in the horizontal plane, but has directional radiation in the vertical plane, that is, on the horizontal pattern. It is manifested as 360° uniform radiation, which is commonly referred to as non-directional. Since the development of omnidirectional antennas, there have been various changes in structural forms, from the initial monopole, dipole, biconical, and helical antennas to microstrip, smart antennas, etc., and the implementation methods mainly include parallel feed and series antennas. Feed two ways. It is widely used in some special communication systems such as point-to-multipoint base statio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50
Inventor 林澍刘梦芊刘曦林怡琛陆加马欣茹田雨
Owner HARBIN INST OF TECH