High-gain low-side lobe half-height waveguide wide side slot antenna and design method thereof

A technology of half-height waveguide and slot antenna, which is applied in the direction of slot antenna, antenna coupling, circuit, etc., which can solve the problems of needing improvement in precision, long design cycle, complex method, etc., to shorten the design and processing cycle, reduce volume and weight, Effect of low sidelobe design

Inactive Publication Date: 2015-03-11
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology

However, due to the complexity of the method, the accuracy of dealing with mutual coupling problems needs to be...

Method used

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  • High-gain low-side lobe half-height waveguide wide side slot antenna and design method thereof
  • High-gain low-side lobe half-height waveguide wide side slot antenna and design method thereof
  • High-gain low-side lobe half-height waveguide wide side slot antenna and design method thereof

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example 1

[0068] Example 1: A high-gain low-sidelobe half-height waveguide broadside slot antenna operating in the X-band. All configurations of this antenna are compatible with figure 1 , figure 2 Exactly the same, using offset slots on the wide side of the waveguide, using the excitation method of the traveling wave array, the waveguide uses the half-height form of the BJ-100 standard waveguide, the wide side a=22.86mm, the narrow side b=5.08mm, the total length L= 2529mm, crack width w=1.56mm, waveguide wall thickness t=1mm.

[0069] image 3 Antenna standing wave curve for example 1, it can be seen that the active standing waves in the working frequency band are all less than 1.1, which satisfies the index requirements well.

[0070] Figure 4 It is the antenna transmission coefficient (S21) curve of Example 1, it can be seen that its radiation efficiency is above 90%.

[0071] Figure 5 is the three-dimensional pattern of the antenna in Example 1.

[0072] Figure 6 It is ...

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Abstract

The invention relates to a high-gain low-side lobe half-height waveguide wide side slot antenna. The antenna comprises the following parts: a shielding plate and a half-height waveguide wide side bias slot. The antenna is designed through a method of the combination of classical electromagnetic theory of waveguide slot and electromagnetic simulation software. The mathematic relation between radiation slot parameters at ideal state and line source aperture distribution is given out according to an Elliot theory, the slot parameters of an antenna are subjected to simulation through the electromagnetic simulation software, and the relation between the radiation slot conductivity and the slot position length is obtained according to simulation data fitting, so that all parameters of the slot are worked out, and a step of experimental debugging is canceled. Finally the shielding plate is designed for the antenna according to the requirements of gain indexes. The array antenna has the characteristics of high gain, low side lobe and low weight, and is applicable to occasions where high-power and high-definition radar antennas are required for ship-navigation radars and sea detection radars.

Description

technical field [0001] The invention relates to a half-height waveguide wide-side slot antenna, which is composed of several waveguide slots, has high gain, low sidelobe radiation characteristics and small volume and light weight structural characteristics, so it is widely used in sea-going ship traffic management, etc. in the detection system. Background technique [0002] The waveguide slot antenna array has compact structure, small size and light weight, and is widely used in radar and communication fields. Among them, the waveguide wide-side slot traveling wave array antenna is more and more popular because it is easy to achieve low sidelobe or even ultra-low sidelobe performance. attention to engineering applications. [0003] The basic principle of the waveguide slot antenna is to use the cracks on the wide or narrow walls of the waveguide to cut off the current on the waveguide wall to generate radiation. The radiation intensity and phase of waveguide slots can be c...

Claims

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Application Information

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IPC IPC(8): H01Q13/12H01Q1/52
Inventor 石磊
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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