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Low-frequency ultra-wideband compact feed

A compact field feed, ultra-broadband technology, which is applied to the mid-position feed between antenna endpoints, waveguide-type devices, electrical components, etc., can solve problems such as very high processing accuracy requirements, difficulty in smooth docking, and excessive electrical dimensions. , to achieve the effect of light weight, low cost and wide impedance bandwidth

Inactive Publication Date: 2007-08-08
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the ultra-wideband antenna is applied in the low frequency band, it has the characteristics of light weight and good electrical performance, but the Y-Y transitional balun structure used in this antenna requires very high processing accuracy of the slot line and microstrip line, and the width of the slot line is only 0.035mm , while the balun structure is very sensitive to the size, especially the Y-Y joint part
In addition, it is very difficult to smoothly connect the bow-tie antenna with the 0.035mm wide slot line, and the electrical size of the antenna is still too large when it is applied to the low frequency band

Method used

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  • Low-frequency ultra-wideband compact feed
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Embodiment Construction

[0026] A preferred embodiment of the present invention: see Fig. 1. 1 in the figure is the butterfly antenna, 2 in the figure is the feeding structure of the butterfly antenna, 3 in the figure is the metal plates on both sides, and 4 in the figure is the rear metal plate. The entire compact field feed consists of these four parts.

[0027] The butterfly antenna is bent from a flat metal plate as shown in Figure 2, and it is determined by the parameter l 1 , l 2 , l 3 , l 4 , l 5 It is determined jointly, where l1 is the total length of the flat metal plate of the entire bowed antenna before bending, l2 is the length of the arc transition section from the index line to the side plate, and l5 is the width of the entire bowed antenna. The selection of the index portion of the butterfly antenna determines the radiation performance of the entire antenna. Proper selection of the exponential curve equation can greatly reduce the electrical size of the antenna, improve the radiat...

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Abstract

The invention relates to one low frequency super wide band contract field source, which comprises one butterfly antenna, feedback part, two side fix metal boards and back metal board, wherein, feedback source emission part relies on butterfly antenna and the feedback part is composed of SMA joint band wire and band tank wire structure by use of variable butterfly antenna wide band property and feedback part to realize whole feedback wide band property.

Description

technical field [0001] The invention relates to an ultra-broadband compact field feed source, which can be used for both receiving and transmitting radio waves. It is mainly used for tight field testing. On the one hand, it can be used as a feed source for tight field quiet zone detection, and on the other hand, it can be used for ordinary antenna and RCS measurement. In addition, the feed can also be used as a terminal antenna for ultra-wideband radio equipment such as electronic reconnaissance, electronic jamming, and ground-penetrating radar, as well as a base station antenna for ultra-wideband communication. Background technique [0002] The compact field feed is closely related to the generation and development of the compact field technology. The compact field is used to test the far-field characteristics of the target, such as the antenna pattern, the radar cross section of the target, etc. The compact field is an excellent indoor test site. Advanced countries spare ...

Claims

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Application Information

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IPC IPC(8): H01Q9/16H01Q13/08H01P3/08
Inventor 王正鹏李鹏程何国瑜李凤先
Owner BEIHANG UNIV
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