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Series fed microstrip array antenna design method

A technology of a microstrip antenna and a design method, which is applied to antennas, antenna arrays, and devices for manufacturing antenna arrays, etc., can solve problems such as complex design methods, and achieve the effects of simple design methods, easy design, and easy design.

Active Publication Date: 2016-11-02
BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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Problems solved by technology

The equivalent circuit method is commonly used, the design method is more complicated, and it is only a general approximation method

Method used

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  • Series fed microstrip array antenna design method
  • Series fed microstrip array antenna design method
  • Series fed microstrip array antenna design method

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Embodiment Construction

[0028] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Technical scheme of the present invention is as follows:

[0030] A method for designing a serial-fed microstrip antenna, the method comprising the steps of:

[0031] Step 1, first determine the equivalent wavelength of the electromagnetic wave in the dielectric plate;

[0032] Step 2. Determine the number of antenna elements according to the antenna size and equivalent wavelength;

[0033] The number of antenna elements is the antenna size divided by the equivalent wavelength and rounded up.

[0034] Step 3. Design the excitation current of each antenna element according to the pre-designed sidelobe level and the number of antenna elements in step 2;

[0035] The excitation current can be calculated by substituting the sidelobe level and the number of antenna elements into the sidelobe weighting formula. ...

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Abstract

The invention discloses a series fed microstrip array antenna design method. The method includes the following steps that: the equivalent wavelength of electromagnetic waves in a dielectric plate is determined; the number of units is determined according to antenna size and the equivalent wavelength; the excitation current of each antenna unit is designed according to designed sidelobe electric level; the power of each unit is determined according to the excitation current, and the impedance of each unit is determined according to a situation that resistance be inversely proportional to power; and antenna patch size is designed according to the determined impedance of the units. According to the series fed microstrip array antenna design method, the impedance of a main feeder line and patches are adjusted to be real impedance through triangular sheets, and the main feeder line and the patches are adjusted and matched at an outlet; and plated-through holes are formed between two antennas, so that the degree of isolation between the antennas can be increased. With the method adopted, a series fed microstrip array antenna can be designed simply and intuitively.

Description

technical field [0001] The invention belongs to the field of antennas, in particular to a method for designing a series-fed microstrip array antenna. Background technique [0002] Due to the advantages of small size, light weight, low profile, conformal, and easy processing, microstrip antennas have been widely used in radar and communication fields. Generally, there are two feeding methods of microstrip array antennas: series feeding and parallel feeding. The main advantages of microstrip series feeding are: the feeder line is relatively short, which can effectively reduce the radiation and scattering loss caused by the feeder line, and improve the antenna efficiency; Each microstrip patch unit is arranged compactly, the space utilization rate of the antenna is high, and the area of ​​the antenna array is reduced, which is more conducive to the miniaturization design and realization of the antenna. [0003] Although there are many methods that can be used to analyze micros...

Claims

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Application Information

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IPC IPC(8): H01Q21/00
CPCH01Q21/0087
Inventor 王辉赵海明王汝征林莉刘国栋
Owner BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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