Deformed opening resonant ring-based multi-mode and wideband printed loop antenna
A split resonant ring, multi-mode technology, applied in the direction of antenna, antenna coupling, antenna grounding device, etc., can solve the problems of low efficiency, limited use, occupying a lot of space, etc.
Inactive Publication Date: 2018-01-26
HANGZHOU DIANZI UNIV
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Problems solved by technology
As we all know, electrically small antennas are favored by designers due to their simple structure and small size. However, their inherent shortcomings such as narrow band and low efficiency also limit their use in ultra-wideband communications.
According to electromagnetic theory, classical loop antennas are typical narrowband resonators and occupy a lot of space, so they do not meet today's requirements
Method used
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[0018] The present invention will be further described below in conjunction with accompanying drawing.
[0019] Such as figure 1 As shown, two coupled metal split rings (2) (3) are nested and printed on the top of the dielectric substrate (1), and their openings are located in opposite directions. The inner ring is used as a feeding ring, and the outer ring is used as a coupling ring. . In addition, in order to cooperate with the inner and outer rings, a metal strip (4) is introduced and placed close to the feed point of the inner feed ring. The opening of the inner feed loop (3) serves as a feed point, from which the excitation signal (5) is fed into the excitation.
[0020] The antenna adopts the coaxial feeding form, the inner conductor of the SMA RF connector is connected to one end of the opening of the inner feeding ring, and the outer conductor is connected to the other end of the opening.
[0021] The antenna design of the present invention is carried out in the thr...
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The invention discloses a deformed opening resonant ring-based multi-mode and wideband printed loop antenna. The deformed opening resonant ring-based multi-mode and wideband printed loop antenna comprises a dielectric substrate, an external opening rectangular ring, an internal opening feeding ring and a parasitic metal strap, wherein multiple modes and multi-frequency resonance are generated by magnetoelectric coupling between the internal opening rectangular ring and the external opening rectangular ring. In order to coordinate working of the internal opening ring and the external opening ring, the parasitic metal strap is introduced and placed at a position near to a feeding point of the internal feeding ring, a new resonant frequency point can be induced at a high frequency by the introduction of the parasitic metal strap, the impedance matching of the whole high-frequency band is greatly improved, so that a first deformation opening resonant ring mode working 816MHz is covered, and the wideband characteristic of full coverage from 2.3GHz to 4.6GHz is expressed. The antenna has the characteristics of miniaturization, low profile and wideband, and thus, the antenna can be widelyapplied to modern wireless communication.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a low profile, multi-mode resonance and wide bandwidth printed loop antenna based on a deformed split resonant ring. Background technique [0002] In recent years, with the rapid development of wireless communication systems, the requirements for antennas have become higher and higher. It is imminent to design an antenna with low cost, low profile, miniaturization, wide bandwidth and directional radiation, such as in point-to-point communication , radio frequency identification system, microwave imaging, Internet of things and other applications. However, achieving one or both of the above indicators may seem simple, but designing an antenna that combines all of the above characteristics is a challenge for antenna engineers. [0003] The planar printed antenna is very suitable for small device communication due to its low profile, easy integration and processing, an...
Claims
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Login to View More IPC IPC(8): H01Q1/38H01Q1/48H01Q1/52H01Q5/20
Inventor 徐魁文刘飞段江波陈世昌彭亮王高峰
Owner HANGZHOU DIANZI UNIV