Evaluation method for performance of broadband antenna

An evaluation method and broadband antenna technology, which is applied to antennas, devices that enable antennas to work in different bands at the same time, electrical components, etc., can solve the problem that the size specifications cannot meet the development requirements of equipment miniaturization, and the evaluation method is simple and easy , the effect of small amount of calculation

Active Publication Date: 2015-08-19
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Although the traditional dipole antenna has good transmission characteristics, its size specification can no longer meet the development requirements of equipment miniaturization

Method used

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  • Evaluation method for performance of broadband antenna
  • Evaluation method for performance of broadband antenna
  • Evaluation method for performance of broadband antenna

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0020] Theoretically speaking, the impedance bandwidth of biconical / monoconical antennas tends to be infinite, and most broadband antennas can be regarded as deformations of biconical / monoconical antennas. Therefore, the biconical / monoconical antenna can be selected as the reference "template antenna", and then the impedance frequency response characteristics of the "broadband antenna to be evaluated" with different structures are measured in the same frequency band, and compared with the impedance frequency response of the "template antenna" By performing correlation calculations on the antenna characteristics, the changes in broadband characteristics brought about by changes in the antenna structure can be intuitively and quantitatively evaluated.

[0021] first reference image 3 Shown, method flow process of the present invention is as follows...

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Abstract

The invention discloses an evaluation method for the performance of a broadband antenna, and belongs to the technical field of microwave. According to the evaluation method, in a frequency band same with a to-be-compared antenna, an ideal "broadband antenna" is designed as a template antenna, correlation operation of the impedance frequency response characteristic of the to-be-compared antenna and the impedance frequency response characteristic of the template antenna is performed, correlation coefficients of input resistance and input reactance characteristics are respectively compared, and the broadband performance of the to-be-compared antenna is explained in a quantitative manner. The closer the correlation coefficient of the impedance is to 1, the smaller the performance difference is from the ideal broadband antenna, and the better the broadband performance is; otherwise, the larger the performance difference is from the ideal broadband antenna, the poorer the broadband performance is. According to the evaluation method, a reference effect on the explanation of the work principle of the antenna, the development of antenna teaching software, and the development of novel broadband antennas is achieved.

Description

technical field [0001] The invention relates to a performance evaluation method of a broadband antenna, which belongs to the field of microwave technology. Background technique [0002] With the development of wireless communication technology, UWB communication technology has attracted much attention due to its high data transmission rate, low transmission power, strong anti-interference performance, good confidentiality, and low cost. It has broad application prospects in many fields such as identification. For UWB wireless communication, not only the UWB antenna is required to have good impedance matching characteristics, stable radiation directivity, relatively flat gain characteristics and polarization characteristics within its operating frequency band, but also the antenna is expected to be small enough, low in cost, and easy to process and install. [0003] It is generally considered that an antenna with a relative bandwidth exceeding 25% is an ultra-wideband anten...

Claims

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Application Information

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IPC IPC(8): H01Q5/50
Inventor 吕文俊章丹阳张庆年陈英朱洪波
Owner NANJING UNIV OF POSTS & TELECOMM
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