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Zeroth-order resonator and low-profile zeroth-order resonator omnidirectional circularly polarized antenna

A technology of circularly polarized antenna and zero-order resonator, applied in resonator, antenna grounding switch structure connection, waveguide type device and other directions, can solve the problem of large space, omnidirectional circularly polarized antenna cannot be parallel to the antenna, etc. Low, save system resources and design efficiency, optimize the effect of improving efficiency

Inactive Publication Date: 2015-12-30
GUILIN UNIV OF ELECTRONIC TECH
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  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the design scheme of the existing omnidirectional circularly polarized antenna cannot allow the antenna radiation direction to be parallel to the antenna structure plane, but needs to occupy a large space, and provides a zero-order resonator and a low-profile zero-order Resonator omnidirectional circularly polarized antenna

Method used

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  • Zeroth-order resonator and low-profile zeroth-order resonator omnidirectional circularly polarized antenna
  • Zeroth-order resonator and low-profile zeroth-order resonator omnidirectional circularly polarized antenna

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Embodiment 1

[0055] Embodiment 1 is a low-profile zero-order resonator omnidirectional circularly polarized antenna when the number of zero-order resonators is N=4. see Figure 7 and Figure 8 .

[0056] Arrange 4 identical zero-order resonators in a circle. Since the four zero-order resonators form a circle, the directions of the horizontal polarization vectors between them are different and cancel each other in the z-axis direction; and the horizontally polarized wave has both x-polarized components and y-polarized component (and the magnitudes of x-polarization and y-polarization are equal). Therefore, horizontally polarized waves radiate omnidirectionally, which can be equivalent to the radiation of a magnetic dipole. The vertical polarization vectors of the four zero-order resonators are all in the same direction, so they are superimposed and enhanced, so the vertically polarized wave is also omnidirectional radiation, which can be equivalent to the radiation of an electric dipole...

Embodiment 2

[0060] Embodiment 2 is a low-profile zero-order resonator omnidirectional circularly polarized antenna when the number of zero-order resonators is N=3. see Figure 12 and Figure 13 .

[0061] Arrange three identical zero-order resonators in a circle. Same as the embodiment when N=4, these 3 resonators form a circle when N=3, so the directions of the horizontal polarization vectors between them are different, and also cancel each other in the z-axis direction; and the horizontal polar The chemical wave has both x-polarized and y-polarized components (and the amplitudes of x-polarized and y-polarized are equal). Therefore, horizontally polarized waves radiate omnidirectionally, which can also be equivalent to the radiation of magnetic dipoles. The vertical polarization vectors of these several resonators are all in the same direction, so they are superimposed and enhanced with each other, so the vertically polarized wave is also omnidirectional radiation, which can also be ...

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Abstract

The invention discloses a zeroth-order resonator and a low-profile zeroth-order resonator omnidirectional circularly polarized antenna. The zero-order resonator is composed of a dielectric substrate, a metal patch, a metal floor and a short-circuit pin. The metal patch and the metal floor are respectively adhered on the two relatively parallel surfaces of the dielectric substrate. One end of the short-circuit pin is connected with the metal patch, and the other end is connected with the metal floor. The zeroth-order resonators are arranged at the external side of the radiation type feed network of the antenna in a surrounding way. Phase difference between two polarizations is enabled to be fixed at 90 degrees by the zeroth-order resonators, electric dipoles and magnetic dipoles are constructed by using a mode of circular ring group arrays, and the design of the zeroth-order resonator units and optimization of the circular ring array circularly polarized antenna are separated without considering the phase problem of two mutually perpendicular linear polarization components so that optimization efficiency can be enhanced, system resources can be saved and design efficiency can be enhanced. Besides, the designed omnidirectional circularly polarized antenna has the low-profile characteristic and can be applied to systems with the requirement for the antenna profile.

Description

technical field [0001] The invention relates to the technical field of circularly polarized antennas, in particular to zero-order resonators and low-profile zero-order resonator omnidirectional circularly polarized antennas. Background technique [0002] Omnidirectional circularly polarized antennas with omnidirectional radiation characteristics can achieve omnidirectional coverage or receive arbitrary polarization incoming waves in any direction, so they are used in land mobile communication systems, mobile satellite communications, broadcast television communications, and aviation communications (such as aircraft and spacecraft, etc.) have a wide range of applications. [0003] At present, the omnidirectional circularly polarized antenna design methods mainly include: helical dipole antenna technology, cylindrical conformal antenna array technology, back-to-back antenna technology, monopole antenna technology and dielectric resonator antenna technology. However, the omnid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P7/00H01Q1/50
Inventor 彭麟姜兴李晓峰仇玉杰廖欣唐绍宇谢继扬
Owner GUILIN UNIV OF ELECTRONIC TECH
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