B1/L1 broadband satellite antenna based on T-shaped balance load of L-shaped slot

A satellite antenna and slot technology, applied in the field of B1/L1 broadband satellite antenna, can solve the problem of small antenna gain gain, achieve a wide 3dB axial ratio bandwidth, solve the defect of gain, and achieve good gain effect

Active Publication Date: 2017-02-01
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the defects in the antenna gain and the problem that the gain is small at low elevation angles

Method used

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  • B1/L1 broadband satellite antenna based on T-shaped balance load of L-shaped slot
  • B1/L1 broadband satellite antenna based on T-shaped balance load of L-shaped slot
  • B1/L1 broadband satellite antenna based on T-shaped balance load of L-shaped slot

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0027] see figure 1 , the radius of the circular radiation patch is 19 ± 0.1 mm. The distance between the two radiation patches is 17±0.1mm, the width G1 of the L gap is 1±0.1mm, and the width G2 is 1.5±0.1mm. The length of the T-shaped arc is 7.5±0.1mm, the width is G3, and the width of G3 is 1±0.1mm. For each angle of the L gap, Deg1 is 10±0.1deg, Deg2 is 6±0.1deg, and Deg3 is 3±0.1deg.

[0028] see figure 2 , Wikinson power divider feed binary structure, microstrip line width W1, W3 is 3.6 ± 0.1mm, W2 is 1 ± 0.1mm. Feeder width D1 is 2±0.1mm, feeder length L2 is 9.5±0.1mm, L3 is 8.5±0.1mm, L5 is 36±0.1mm, L6 is 23±0.1mm, L7 is 23.5±0.1mm, L8 is 13.5±0.1mm 0.1mm.

[0029] see image 3 , image 3 Mark 1 is a circular radiation patch. image 3 The middle mark 2 is the dielectric substrate. image 3 Mark 3 in the middle is a reflective floor with vi...

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Abstract

The invention provides a B1 / L1 broadband satellite antenna based on T-shaped balance load of an L-shaped slot, and relates to a broadband satellite antenna. The broadband satellite antenna is provided with a dielectric substrate; good conductor layers are laid on the upper surface and the lower surface of the dielectric substrate respectively; the good conductor layer on the upper surface is provided with two L-shaped slot-loaded circular radiation patches; a feed structure is arranged on the good conductor layer on the lower surface and is a split power division network; and the lengths of microstrip lines of a power divider are 3-4.5mm, the quarter impedance conversion length is L2+L3+pi*D1 / 2 and a difference of a quarter wavelength exists in the length of a feeder to achieve a 90-degree phase shift by an output end, wherein L2 and L3 are the lengths of the microstrip lines and D1 is the width of the feeder. The good conductor layer on the upper surface is a metal ground plane. According to the B1 / L1 broadband satellite antenna based on T-shaped balance load of the L-shaped slot, the miniaturization characteristic can be achieved, the gain performance is relatively good and horizontal omnidirectional radiation can be achieved.

Description

technical field [0001] The invention relates to a broadband satellite antenna, in particular to a T-shaped balanced loading B1 / L1 broadband satellite antenna based on an L slot. Background technique [0002] The rapid development of information technology has comprehensively promoted the wide application of satellite navigation systems in military, communication, remote sensing and telemetry, trajectory measurement and other fields. As an important part of the satellite navigation system, the antenna converts electromagnetic wave energy during the transmission and reception of communication signals, which directly affects the integrity, effectiveness and accuracy of the satellite navigation system. [0003] Satellite navigation systems provide people with all-weather, high-precision and real-time navigation, positioning and timing information. Antenna performance is critical to the effectiveness, accuracy and integrity of a satellite navigation system. At present, the rese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q15/24H01Q21/00
CPCH01Q1/38H01Q1/50H01Q15/24H01Q21/00
Inventor 游佰强徐琥李文卓周建华李杰
Owner XIAMEN UNIV
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