Wideband planar antenna

A planar antenna, broadband technology, applied in the field of antenna design, can solve the problems of difficulty in realizing broadband antenna, size reduction, narrow operating bandwidth, etc., and achieve the effects of low processing cost, impedance bandwidth expansion, and radiation gain improvement.

Inactive Publication Date: 2015-02-11
36TH RES INST OF CETC
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Problems solved by technology

[0003] In terms of the design of the zero-order resonant antenna, since the zero-order resonant antenna has an infinite wavelength, and its resonant frequency has nothing to do with the physical length, this characteristic makes the size of the zero-order resonant antenna greatly reduced compared with the traditional half-wavelength antenna , it is very easy t

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[0033] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] figure 1 Is a front view of an embodiment of the present invention, figure 2 Is a rear view of an embodiment of the present invention, image 3 Is the left view of the embodiment of the present invention, such as Figure 1-3 As shown, the embodiment of the present invention discloses a broadband planar antenna, including: a dielectric substrate 11, a metal ground plate 12, a microstrip feeder, a coaxial connector 14, and 5 radiation units.

[0035] The 5 radiating elements and the microstrip feeder of the broadband planar antenna are printed on the upper surface of the dielectric substrate, and the first radiating element to the fifth radiating element are arranged on both sides of the microstrip feeder in a logarithmic period. The dist...

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Abstract

The invention relates to the technical field of antenna design, in particular to a wideband planar antenna. The wideband planar antenna comprises a dielectric base plate, a metal grounding plate, a micro-strip feeder, a coaxial connector and N radiating units, wherein the N is greater than or equal to 5; the N radiating units and the micro-strip feeder are printed on the upper surface of the dielectric base plate, the first radiating unit to the Nth radiating unit are sequentially arranged at both sides of the micro-strip feeder in a mutually-staggered way according to a log-periodic mode, the sizes of the N radiating units are increased according to certain scaling factors, and a first gap is arranged between each radiating unit and the micro-strip feeder; the metal grounding plate is printed on the lower surface of the dielectric base plate; an outer conductor of the coaxial connector is connected with the metal grounding plate, and an inner conductor of the coaxial connector is connected with the micro-strip feeder. The wideband planar antenna provided by the invention has a simple and effective structure, and a wideband antenna with the relative bandwidth of more than 66.7 percent is realized.

Description

technical field [0001] The invention relates to the technical field of antenna design, in particular to a broadband planar antenna. Background technique [0002] In recent years, wireless communication technology has developed rapidly, and the demand for broadband communication equipment is increasing, especially in the fields of ultra-wideband communication and direction finding. This undoubtedly increases the demand for broadband antennas, so the design of broadband antennas has become a research hotspot in the field of antennas. [0003] In terms of the design of the zero-order resonant antenna, since the zero-order resonant antenna has an infinite wavelength, and its resonant frequency has nothing to do with the physical length, this characteristic makes the size of the zero-order resonant antenna greatly reduced compared with the traditional half-wavelength antenna , it is very easy to realize the miniaturization design of the antenna, but the disadvantage of the zero-...

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50
Inventor 常雷张明芳
Owner 36TH RES INST OF CETC
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