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Broadband quasi-end-fire microstrip yagi antenna

A Yagi antenna and end-fire technology, which is applied in the field of broadband quasi-end-fire microstrip Yagi antenna, can solve the problems of large influence of antenna beam size and narrow bandwidth, and achieve the effect of improving adaptability and expanding bandwidth

Active Publication Date: 2020-10-16
NANTONG UNIVERSITY +1
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Problems solved by technology

[0004] Purpose of the invention: Aiming at the problem that the current quasi-end-fire microstrip Yagi antenna has a narrow bandwidth and the antenna beam pointing is greatly affected by the size of the metal carrier, a wide-band quasi-end-fire microstrip Yagi antenna is proposed, and the antenna beam pointing is affected by the size of the metal carrier greatly reduced the impact of

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Embodiment Construction

[0020] The present invention will be further explained below in conjunction with the accompanying drawings.

[0021] A wideband quasi-endfire microstrip Yagi antenna, such as figure 1 As shown, it includes a top metal structure 1 , a second metal structure 2 , a third metal structure 3 , a bottom metal structure 4 , a first dielectric substrate 13 , a second dielectric substrate 16 and a coaxial cable 17 .

[0022] like figure 2 As shown, the top metal structure 1 is located on the upper surface of the first dielectric substrate 13, including the first strip-shaped metal patch 5, the first rectangular metal patch 6, the double rectangular metal patch 7 with spacing, the second strip metal patch Belt type metal patch 8. like image 3 As shown, the second-layer metal structure 2 is composed of a second rectangular metal patch 9, which is located on the lower surface of the first-layer dielectric substrate 13, and passes through the metallized through-hole 14 located at the m...

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Abstract

The invention discloses a broadband quasi-end-fire microstrip yagi antenna which comprises a top metal structure, a second metal structure, a third metal structure, a bottom metal structure, a first dielectric substrate, a second dielectric substrate and a coaxial line. The top metal structure comprises a first strip-shaped metal patch, a first rectangular metal patch, a double-rectangular metal patch and a second strip-shaped metal patch. The double-rectangular metal patch and the double-layer metal patch structure composed of the first rectangular metal patch and the second metal patch whichare connected through a metallized through hole form a driving unit. The first strip-shaped metal patch on the left side of the driving unit forms a guiding unit. The second strip-shaped metal patchon the right side of the driving unit forms a reflection unit. The third strip-shaped metal patch, the second layer of dielectric substrate and the metal ground form a microstrip line serving as a feed structure. The antenna is wide in bandwidth, the influence of the size of the metal carrier on the beam pointing of the antenna can be greatly reduced, and the adaptive capacity of the antenna on the metal carrier is improved.

Description

technical field [0001] The invention relates to various microwave communication fields, in particular to a broadband quasi-end-fire microstrip Yagi antenna. Background technique [0002] Microstrip Yagi antennas are widely used in wireless communication systems because of their strong directivity, high gain, high front-to-back ratio, and strong anti-interference ability. In order to obtain standard end-fire radiation, the microstrip Yagi antenna usually uses a defective metal ground, and its end-fire characteristics and bandwidth can be effectively guaranteed. However, the environmental adaptability of this type of antenna is weak, especially when the antenna is attached to a metal carrier, its end-fire characteristics and bandwidth will be greatly affected, and due to the different sizes of the metal carrier, the impact will also change. The microstrip Yagi antenna with a complete metal ground is designed considering the influence of the metal background. The antenna can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/30H01Q1/38H01Q1/50H01Q19/10
CPCH01Q1/38H01Q1/50H01Q19/10H01Q19/30
Inventor 施金吴昊陈燕云徐凯张凌燕王磊张艳秋
Owner NANTONG UNIVERSITY
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