Ultra-wideband millimeter-wave linearly-polarized waveguide aperture array antenna

A waveguide slot and array antenna technology, applied in slot antennas, antenna arrays, antennas, etc., can solve the problems of narrow frequency band, complex antenna structure, and difficult processing, and achieve low side lobes, simplified workload, and small processing errors. Effect

Inactive Publication Date: 2014-05-21
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex structure, difficult processing and narrow frequency band of the existing waveguide slot array antenna, and propose an ultra-wideband millimeter wave linearly polarized

Method used

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  • Ultra-wideband millimeter-wave linearly-polarized waveguide aperture array antenna
  • Ultra-wideband millimeter-wave linearly-polarized waveguide aperture array antenna
  • Ultra-wideband millimeter-wave linearly-polarized waveguide aperture array antenna

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Embodiment

[0035] Ultra-wideband mmWave linearly polarized waveguide slot array antennas, such as Figure 8 As shown, includes the first sub-antenna, the metal wall connector and the second sub-antenna. The structure of the first sub-antenna and the second sub-antenna are exactly the same, and both have receiving and transmitting functions. The two are connected by a metal wall connector to form mutual coupling isolation, and the structures of the two are symmetrical about the metal wall connector.

[0036] Each sub-antenna includes a base plate 1, a waveguide feed network layer 2 and a slot radiation front layer 3, such as Figure 4 shown.

[0037] The base plate 1 is made of aluminum material, and its lower surface is integrally processed to produce a flange plate 4, a waveguide conversion device 5 and a mechanical installation hole 13, such as figure 1 shown. The flange plate 4 and the mechanical installation hole 13 are located at the bottom of the base plate 1 , and the waveguide...

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Abstract

The invention relates to an ultra-wideband millimeter-wave linearly-polarized waveguide aperture array antenna, belonging to the technical field of microwave detection. In the waveguide aperture array antenna, a multi-power-dividing feed network is combined with a waveguide aperture radiation array, and an antenna is simulated and designed by applying the thought of integral design of an antenna feeder system. By changing the amplitude of each port of an HT power divider network, the characteristics of low standing wave, high grain, low minor lobe and wide wave beam are realized, an ultra-large frequency bandwidth is realized, and the ratio of the frequency bandwidth to the central frequency is up to 6.6 percent. On the aspect of structure, the entire antenna comprises a bottom plate, a feed network and a radiation portion, thereby greatly reducing the workload of simulation and machining, reducing the processing error to the maximum extend, reducing the size and weight of the antenna, and achieving adaptation to various occasions and experiments. The antenna is capable of receiving/transmitting signals at the same time, is suitable for Ka waveband communication and detection, and is suitable to be applied to communication systems, navigation systems and radar systems of various fixed and movable platforms.

Description

technical field [0001] The invention relates to an ultra-wideband millimeter-wave linearly polarized waveguide slot array antenna, which belongs to the technical field of microwave detection. Background technique [0002] Waveguide slot array antennas have been widely used in narrow-beam or shaped-beam microwave communication and radar systems. The traditional waveguide slot array antenna design achieves high gain and low sidelobes by adjusting the arrangement and size of the slot array, which makes the antenna structure complex and cumbersome, difficult to process, and prone to errors. Contents of the invention [0003] The purpose of the present invention is to solve the problems of complex structure, difficult processing and narrow frequency band of the existing waveguide slot array antenna, and propose an ultra-wideband millimeter wave linearly polarized waveguide slot array antenna, by using HT unequal power splitter network as the feeder The electrical network and t...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q23/00H01Q13/10
Inventor 刘埇吴昱明赵鹏飞卢宏达刘嘉琳李庆
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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