Low-cost high-gain broadband frequency sweep antenna

A high-gain, low-cost technology, applied in the microwave field, can solve the problems of low efficiency, narrow bandwidth, and high cost, and achieve the effects of low loss, reduced system cost, and high radiation efficiency

Pending Publication Date: 2021-10-29
珠海中科慧智科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: how to solve the problems of high cost, low efficiency an

Method used

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  • Low-cost high-gain broadband frequency sweep antenna
  • Low-cost high-gain broadband frequency sweep antenna
  • Low-cost high-gain broadband frequency sweep antenna

Examples

Experimental program
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Example Embodiment

[0019] Example one

[0020] This embodiment provides a technical solution: a low-cost high gain broadband frequency sweeping antenna, including a waveguide slow-wave wire feed network and a column line source radiation portion, the waveguide slow-wave wire feed network includes a coupling structure. The waveguide slow wave is disposed above the antenna radiating unit consisting of the column wire source.

[0021] One end of the waveguide slow wave is a signal input, and the other end is a matching load absorbing end, and electromagnetic waves are coupled to the column source in the coupling structure in the propagation process.

[0022] The coupling structure is a convex structure in which the convex height of the waveguide is controlled by controlling the position of the projection height of the coupling structure and the position of the relative column line, thereby achieving the amplitude weight of the column line source.

[0023] The line source is part of the horn antenna div...

Example Embodiment

[0027] Example 2

[0028] like figure 1 , 2 As shown, the frequency sweep array antenna of the present embodiment consists of two parts, from top to bottom, respectively, the column line source 1 and the waveguide slow wave wire feed network 2.

[0029] The slow wave line 2 is a waveguide structure with coupling structure (coupled projections and slits), and the strip cable is bent to form a "serpent" trace, the purpose of "serpentine" traces is to determine the spacing of the line source Thereafter, in a limited space, the strip line can be arranged, and the scanning range of the frequency sweep antenna can be enlarged. In the frequency sweep array antenna, the phase difference between the angle of beam scan is satisfied between the adjacent lines of the adjacent lines in the array:

[0030]

[0031] It can be seen that when L is fixed, change λ g However, the working frequency of the radar, the phase difference of the adjacent two units changes, and the beam pointer of the ant...

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Abstract

The invention discloses a low-cost high-gain broadband frequency sweep antenna, and belongs to the technical field of microwaves, the low-cost high-gain broadband frequency sweep antenna comprises a feed network and an antenna array plane, the feed network comprises a waveguide slow wave line and a coupling structure, and the antenna array plane comprises an opening horn antenna, a metal grid and a coupling slot. The coupling structures of the feed network are in one-to-one correspondence with the coupling gaps of the antenna array plane, and the feed network feeds the coupling gaps of the antenna array plane through the coupling structures. According to the feed network provided by the invention, the antenna array surface adopts an all-metal structure form, and the integrated compact design is realized; integrated machining is achieved, the tolerance capacity is high, and the machining cost of the whole system is greatly reduced; by adopting the design of the horn antenna and the metal grid, the high gain of the whole antenna is realized, the cost is reduced, the system performance is improved, and the antenna is worthy of popularization and application.

Description

technical field [0001] The invention relates to the field of microwave technology, in particular to a low-cost high-gain broadband frequency-scanning antenna. Background technique [0002] Due to its beam pointing and rapid beam shape change capabilities, phased array antennas are widely used in military fields such as radar, communication, and countermeasures, and civilian scenarios such as monitoring equipment. At present, there are mainly four implementation methods for phased array antennas: phase scanning, frequency scanning, delay scanning and electronic feed switch scanning. Among them, the beam steering of phased array antennas is most widely used through phase scanning and frequency scanning. Beam scanning by changing the phase of the input signal of the array element is phase scanning; by changing the frequency of the signal to change the "intra-array phase difference" between antenna elements, the scanning of the beam is frequency scanning. [0003] The existing...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50H01Q13/02H01Q13/10
CPCH01Q1/36H01Q1/50H01Q13/02H01Q13/10
Inventor 唐惠琼姜胜林
Owner 珠海中科慧智科技有限公司
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