Feed horn of electrical magnetic tape gap structure
An electromagnetic bandgap structure and horn antenna technology, which is applied to waveguide horns, circuits, etc., can solve problems such as reducing horn antennas, and achieve the effects of reducing edge diffraction, easy design, and light weight
Active Publication Date: 2008-06-18
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The technical problem to be solved in the present invention is: aiming at the deficiencies of the above wrinkle horn or diaphragm horn, a horn antenna with an electromagnetic bandgap structure is proposed. The surface current bypasses the edge to solve the problem of reducing the edge diffraction of the horn antenna
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the following examples, but should include all content in the claims.
[0022] By the method of the present invention, make the horn antenna of an electromagnetic bandgap structure, its specific process is as follows:
[0023] (1) Confirm that the working frequency of the manufactured horn antenna is 12.5GHz, the return loss is less than 1.5, the gain is greater than 12dB, and the lobe pattern is less than 30 degrees;
[0024] (2) Select an ordinary horn antenna with a rectangular cross-section, and weld two metal flanges of appropriate size symmetrically in the direction of the E plane of the feed source of the rectangular cross-section horn antenna. The direction of the flange face is parallel to the end face of the horn mouth, and The flange is seamlessly combined with th...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a horn antenna of electromagnetic band gap structure. The invention is characterized in that parameters of the horn antenna to be made such as working frequency, return loss, gains, lobe patterns, etc., are first determined; two metal flange discs with suitable size which are taken as supporting structures are welded symmetrically in the direction of E-surface of a feed source of an existing normal horn antenna; according to existing parameters, all parameters of the electromagnetic band gap structure with consistent size to the flange disc are designed by an FDTD software; furthermore, the electromagnetic band gap structure is made by virtue of the prior art; the electromagnetic band gap structure is glued on the surface of the flange disc and solidified by conductive adhesion with high performance, thus implementing the design of the horn antenna design of the electromagnetic band gap structure. By designing the flange disc and the electromagnetic band gap structure on port surface of the horn, the invention reduces edge diffraction, and improves the directivity and the greatest gain of the antenna; meanwhile, the horn antenna designed by the invention has the advantages of light weight, small volume, stable performance, simple structure, etc. The invention can be widely applied to national defence and civil field.
Description
technical field [0001] The invention relates to a horn antenna, in particular to a horn antenna with an electromagnetic bandgap structure with high gain and high directivity. technical background [0002] The horn antenna is a microwave antenna with a circular or rectangular cross-section that gradually expands at the end of the waveguide, which are called conical horns and pyramidal horns, respectively. The function of the horn antenna is to generate a uniform phase wavefront on a larger aperture than the waveguide, thereby obtaining high directivity. The structure of the horn antenna is simple, and the direction is easy to control. Its radiation field can be accurately calculated according to the Huygens principle, and the calculation results are in good agreement with the actual situation. The horn antenna is widely used in astronomy, communication, military and other fields. [0003] In order to reduce the edge diffraction of electromagnetic waves in the horn antenna, r...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H01Q13/02
Inventor 罗先刚赵泽宇杜春雷
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI