Low-profile broadband microstrip antenna based on differential feed technology

A microstrip antenna, differential feeding technology, applied in the field of antenna design, low profile broadband microstrip antenna, can solve the problem of increasing the antenna profile and so on

Active Publication Date: 2019-08-30
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the existing bandwidth widening technology, the method of increasing the height of the air layer or the method of stacking multi-layer patches is mostly used, but these methods increase the cross-section of the antenna

Method used

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  • Low-profile broadband microstrip antenna based on differential feed technology
  • Low-profile broadband microstrip antenna based on differential feed technology
  • Low-profile broadband microstrip antenna based on differential feed technology

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Embodiment Construction

[0029] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation on the invention.

[0030] Such as Figure 1-4 Shown is a schematic structural diagram of the low-profile broadband microstrip antenna based on the differential feeding technology of the present invention. The antenna includes upper and lower dielectric boards 301, 101 on which metal structures are printed, and the upper and lower dielectric boards are connected by four identical short-circuit grounding posts and two coaxial inner cores for power feeding. The metal structure printed on the upper dielectric board 301 includes a "king"-shaped metal patch 302 printed on the upper surface of the upper dielectric board 301 and two "concave"-shaped metal stickers 303, 304, and a metal patch printed un...

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Abstract

The invention discloses a low-profile broadband microstrip antenna based on a differential feed technology. The low-profile broadband microstrip antenna comprises an upper dielectric plate, a lower dielectric plate and metal patches printed on the surfaces of the upper dielectric plate and the lower dielectric plate, wherein the upper dielectric plate and the lower dielectric plate are connected through four short-circuit grounding columns and two coaxial inner cores for feeding; the upper layer metal patch comprises a metal patch which is printed at the upper surface of the upper dielectric plate and is shaped like a Chinese character 'wang' and two concave-shaped metal patches which are printed on the upper surface of the upper dielectric plate, the lower surface of the upper dielectricplate is provided with two circular metal patches; and the metal patch on the lower dielectric plate is a metal floor. The two coaxial inner cores pass through an air gap between the lower dielectricplate and the two layers of dielectric plates, are respectively in contact with the two circular metal patches printed on the upper dielectric plate and are combined with the metal floor of the lowerdielectric plate to form two feed ports. The antenna adopts differential feed, has the advantages of a wide frequency band, a low section, a high gain, a simple structure and the like, and is suitablefor the wireless communication fields of base station communication, wireless local area networks and the like.

Description

technical field [0001] The invention relates to antenna design technology in the field of wireless communication, in particular to a low-profile broadband microstrip antenna based on differential feeding technology. Background technique [0002] With the development of modern wireless communication technology, the antenna plays an increasingly important role as the front-end device of the wireless communication system. Due to the development of microwave integration technology and the urgent need for low-profile antennas in space technology, low-profile, wide-band, high-gain microstrip antennas have been studied by many designers. In the existing technologies for widening the bandwidth, methods of increasing the height of the air layer or stacking of multi-layer patches are mostly adopted, but these methods all increase the cross-section of the antenna. Using the multi-mode microstrip patch antenna combined with differential feeding technology, the microstrip patch antenna ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/50
Inventor 胡伟刘学康董健身钱龙冯天喜蔡元铭
Owner XIDIAN UNIV
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