Broadband capacitive feed miniature microstrip paster antenna

A microstrip patch antenna, capacitive feeding technology, which is applied to antenna grounding device, antenna support/installation device, antenna grounding switch structure connection, etc. Good impedance matching, realizing operating bandwidth, reducing the effect of equivalent quality factor

Inactive Publication Date: 2016-01-13
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the maximum bandwidth and gain of the microstrip patch antenna depend on its size, redu

Method used

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  • Broadband capacitive feed miniature microstrip paster antenna
  • Broadband capacitive feed miniature microstrip paster antenna
  • Broadband capacitive feed miniature microstrip paster antenna

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Embodiment Construction

[0026] The present invention will be described in further detail below with reference to a specific implementation and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0027] figure 2 and image 3 It is a specific implementation structure diagram of the present invention, a miniaturized microstrip patch antenna with broadband capacitive feeding, including a rectangular radiation patch 1, a circular capacitive coupling feeding patch 2, a grounding plate 3, and a metal short-circuit surface 4, Radiation patch U-shaped slot 5, microstrip dielectric substrate 6, foam dielectric substrate 7, coaxial hole 8. Radiation patch and capacitive coupling feed patch can be designed into any other regular shape as required, such as triangle, ellipse, etc. Radiation patch slots can also choose other forms, such as cross, E, ring and so on. In order to reduce the size of the antenna, a metal short-circuit surface 4 is loaded on the edge of ...

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Abstract

The invention discloses a broadband capacitive feed miniature microstrip paster antenna. A foam dielectric substrate is arranged between a microstrip dielectric substrate and an earth plate and thus the thicknesses of the dielectric substrates are increased; and an equivalent dielectric constant is reduced and a working band width of the antenna is extended. A metal short-circuit surface is loaded at an edge of one side of a radiation paster to form a standing wave structure from an open circuit to a short circuit; and the length of the antenna at the direction perpendicular to the short-circuit surface is a quarter of a wavelength. Slotting is carried out on the radiation paster and the path of an excitation current of the surface of the antenna paster is bent, thereby increasing the effective length of the antenna paster and thus reducing the resonant frequency and realizing miniaturization of the antenna at the another-dimensional dimension. Coupling and feeding are carried out by using a capacitive paster to realize good impedance matching, thereby reducing equivalent quality factors of the antenna and realizing increasing of the operating bandwidth of the antenna. According to the invention, a defect that the existing microstrip paster antenna can not consider the wide frequency band and miniaturization simultaneously can be overcome. The provided antenna has advantages of wide frequency band, low profile, small dimension, light weight, and easy processing.

Description

technical field [0001] The invention relates to a miniaturized microstrip patch antenna with broadband capacitive feeding, which has the characteristics of wide frequency band and miniaturization, and can be widely used in military communication and mobile electronic equipment. Background technique [0002] The rapid development of microwave integrated circuit technology and the wide application of new materials and new processes have promoted the application requirements and technological development of multifunctional and miniaturized electronic equipment. Therefore, the research on broadband and miniaturization of antennas for electronic equipment has become an important branch in the field of antenna research. [0003] Microstrip patch antenna has many advantages, such as low profile, convenient processing and easy conformal structure design, etc. Miniaturized microstrip patch antenna has received more and more attention and research. With the rapid development of mobil...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q1/48H01Q1/12
Inventor 袁洪祁峥东肖鸿
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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